Merge pull request 'Feat/enakgame' (#46) from feat/enakgame into staging

Reviewed-on: #46

docs/integration-backoffice.md

@@ -29,9 +29,10 @@ data organisasi lain dijawab `404`.
 Sembunyikan tombol ubah untuk role yang tidak boleh; server tetap menolaknya (`403`).
 
 **Format response.** Sukses `{ "success": true, "data": … }`; gagal
-`{ "success": false, "errors": [{ "code", "entity", "cause" }] }`. Daftar berhalaman
-memakai `{ "data": [ … ], "pagination": { "page", "limit", "total_count", "total_pages" } }`
-dengan `limit` maks. 100 (default 20).
+`{ "success": false, "errors": [{ "code", "entity", "cause" }] }`. Contoh response di
+dokumen ini adalah isi `data`. Daftar berhalaman isinya
+`{ "data": [ … ], "pagination": { "page", "limit", "total_count", "total_pages" } }`,
+jadi pada response mentah array-nya ada di `data.data`; `limit` maks. 100 (default 20).
 
 **Istilah di layar.** EnakPoint (`POINT`) adalah saldo yang hanya bisa ditukar ke
 voucher, bukan alat bayar; EnakCoin (`COIN`) untuk main game dan bisa ditukar ke

docs/integration-enakgame.md

@@ -1,6 +1,6 @@
 # Integrasi EnakGame: Game Client (Phaser)
 
-**Untuk:** tim game EnakGame (client Phaser) · **Base URL:** `/api/v1` · **Per:** 8 Okt 2026
+**Untuk:** tim game EnakGame (client Phaser) · **Base URL:** `/api/v1` · **Per:** 9 Okt 2026
 
 Kamu mengerjakan **game EnakGame**: game web (Phaser) yang dibuka aplikasi customer di
 dalam webview dari `game_url` sebuah game. Game inilah yang menjalankan satu kali main
@@ -12,7 +12,7 @@ Pembagian tugas dengan aplikasi customer:
 
 | Aplikasi customer ([`integration-mobile-customer.md`](./integration-mobile-customer.md)) | Game EnakGame (dokumen ini) |
 |---|---|
-| Login customer, menyimpan token | Menerima token dari aplikasi lewat bridge (§2) |
+| Login customer, menyimpan token | Menerima token dari aplikasi lewat bridge (§4); bila tidak ada, meminta customer login (§5) |
 | Daftar game, membuka `game_url` di webview | Start session, main, complete, tampilkan hadiah |
 | Saldo, riwayat, voucher, PIN | Memberi tahu aplikasi saat saldo berubah atau game ditutup |
 
@@ -29,15 +29,90 @@ Alasan di balik aturannya ada di [`rfc-enakgame.md`](./rfc-enakgame.md) dan
 2. **Tampilkan hadiah dari response, bukan dari hitungan sendiri.** Angka di layar akhir
    selalu `reward_total` dari backend.
 3. **Satu tap "Main" = satu `Idempotency-Key`.** Retry memakai key yang sama.
-4. **Token customer adalah rahasia.** Hanya diterima lewat bridge, disimpan di memori,
-   tidak pernah ditaruh di URL, `localStorage`, `sessionStorage`, cookie, log, atau
-   analytics. (`session_id` boleh disimpan di `sessionStorage`, §4.4.)
-5. **Semua jumlah bilangan bulat.** Tidak ada pecahan EnakCoin.
-6. **Main game tidak butuh PIN.**
+4. **Token customer adalah rahasia.** Hanya didapat dari bridge atau dari login di
+   game, disimpan di memori, tidak pernah ditaruh di URL, `localStorage`,
+   `sessionStorage`, cookie, log, atau analytics. Begitu juga password customer.
+   (`session_id` boleh disimpan di `sessionStorage`, §6.4.)
+5. **Tanpa token, jangan panggil API customer.** Tampilkan layar login akun customer
+   (§5.2).
+6. **Semua jumlah bilangan bulat.** Tidak ada pecahan EnakCoin.
+7. **Main game tidak butuh PIN.**
 
 ---
 
-## 2. Bridge dengan aplikasi customer
+## 2. Daftar game
+
+Game bukan daftar tetap di kode. Setiap game adalah data yang dibuat admin di
+backoffice per organisasi (nama, `slug`, `game_url`, biaya main, aturan hadiah) dan
+dibaca game lewat `GET /customer/enakgame/games` (§6.1). Satu `game_url` = satu game.
+
+### 2.1 Game yang ada sekarang
+
+| Game | `slug` | Jenis hadiah (`reward_type`) | Body complete | Status |
+|---|---|---|---|---|
+| Spin Harian | `spin` | `PROBABILITY`: server mengundi segmen roda | `{}` | Backend siap. Panduan: §9 |
+
+Runner, Memory, dan Puzzle hanya disebut sebagai contoh di PRD; belum ada spesifikasi,
+`slug`, atau aturan hadiahnya. Game baru harus didaftarkan dulu (§2.3) sebelum bisa
+dimainkan.
+
+### 2.2 Jenis hadiah menentukan apa yang dikirim game
+
+API customer tidak memberi tahu `reward_type`. Jenisnya disepakati saat game
+didaftarkan (§2.3), dan game dibangun untuk jenis itu.
+
+| `reward_type` | Hadiah dihitung dari | Body complete | Bila field-nya tidak dikirim |
+|---|---|---|---|
+| `FIXED` | Jumlah tetap per main | `{}` | – |
+| `SCORE_BASED` | Rentang skor yang diatur admin | `{ "score": 800 }` | Hadiah 0 |
+| `OUTCOME_BASED` | Hasil main, mis. `PERFECT`, `GOOD`, `FAIL` | `{ "outcome": "PERFECT" }` | Hadiah 0. `outcome` yang tidak terdaftar juga 0 |
+| `PROBABILITY` | Undian server; peluang tidak pernah dikirim ke game | `{}` | – |
+
+Admin bisa mengubah besar hadiah kapan saja tanpa build game baru. Supaya game tetap
+benar bila admin juga mengganti jenisnya, **kirim semua hasil yang dimiliki game**:
+game berbasis skor selalu mengirim `score`, game berbasis hasil selalu mengirim
+`outcome`. Field yang tidak dipakai jenis hadiah aktif diabaikan.
+
+### 2.3 Mendaftarkan game baru
+
+Sepakati dengan tim backoffice, lalu admin membuatnya
+([`integration-backoffice.md`](./integration-backoffice.md) §8):
+
+| Yang disepakati | Contoh | Catatan |
+|---|---|---|
+| `slug` | `runner` | Huruf kecil, angka, `-`; unik per organisasi. Game memakainya untuk memeriksa dirinya (§6.1) |
+| `game_url` | `https://…/runner/index.html` | URL build game; dibuka aplikasi di webview |
+| `version` | `1.0.0` | Versi build |
+| `reward_type` | `SCORE_BASED` | §2.2 |
+| Daftar `outcome` | `WIN`, `LOSE` | Hanya game `OUTCOME_BASED`; harus sama persis (huruf besar/kecil) |
+| `result_rules` | `max_score`, `min_duration_seconds`, `max_score_per_second` | Hasil di luar batas ini mendapat hadiah 0 tanpa pemberitahuan (§6.3). Isi dengan skor dan durasi wajar game-mu |
+| `session_ttl_seconds` | `600` | Batas waktu satu main. Harus lebih lama dari durasi main terpanjang, ditambah jeda jaringan |
+| `entry_cost` | `5` | Ditentukan bisnis, minimal 1 |
+
+---
+
+## 3. Daftar API
+
+Semua endpoint diawali `api_base_url` (dari `init`, §4, atau dari config build pada
+mode mandiri, §5.4), mis. `https://api.example.com/api/v1`. Selain login, semua wajib
+memakai header `Authorization: Bearer <token>`. Request ber-body memakai
+`Content-Type: application/json`.
+
+| # | Endpoint | Header tambahan | Body | Dipakai saat | Detail |
+|---|---|---|---|---|---|
+| 0 | `POST /customer-auth/login` | Tanpa `Authorization` | `{ "phone_number", "password" }` | Tidak ada token, atau token ditolak | §5.3 |
+| 1 | `GET /customer/enakgame/games` | – | – | Setelah ada token: biaya main, event, segmen roda | §6.1 |
+| 2 | `POST /customer/enakgame/sessions` | `Idempotency-Key` (wajib) | `{ "game_id" }` | Customer menekan Main; EnakCoin dipotong | §6.2 |
+| 3 | `POST /customer/enakgame/sessions/:id/complete` | – | `{ "score"?, "outcome"?, "data"? }` | Permainan selesai | §6.3 |
+| 4 | `GET /customer/enakgame/sessions/:id` | – | – | Pemulihan setelah reload, bila `session_id` tersimpan | §6.4 |
+| 5 | `GET /customer/enakgame/sessions?game_id=&status=&page=&limit=` | – | – | Pemulihan setelah reload, bila `session_id` tidak tersimpan | §6.4 |
+
+Game tidak memanggil endpoint lain. Registrasi, saldo, riwayat, voucher, dan PIN
+adalah tugas aplikasi customer.
+
+---
+
+## 4. Bridge dengan aplikasi customer
 
 > **Usulan.** Bentuk bridge di bawah belum diimplementasikan di sisi mana pun. Sepakati
 > dengan tim aplikasi customer sebelum mulai; aplikasi memakai kontrak yang sama
@@ -53,9 +128,7 @@ Semua pesan berupa JSON string dengan field `type`.
 | Arah | `type` | Isi | Kapan |
 |---|---|---|---|
 | game → app | `ready` | – | Halaman game selesai dimuat |
-| app → game | `init` | `api_base_url`, `token`, `game_id` | Jawaban atas `ready` |
-| game → app | `token_expired` | – | Backend menolak token (§3) |
-| app → game | `token` | `token` | Token baru setelah `token_expired` |
+| app → game | `init` | `api_base_url`, `token`, `game_id` | Jawaban atas `ready`. `token` boleh kosong bila customer belum login |
 | game → app | `balance_changed` | `coin_balance` | Setelah start dan complete berhasil |
 | game → app | `close` | – | Customer keluar dari game |
 
@@ -65,37 +138,216 @@ Contoh `init`:
 { "type": "init", "api_base_url": "https://api.example.com/api/v1", "token": "eyJ…", "game_id": "8a1f…" }
 ```
 
-Jangan memanggil API apa pun sebelum `init` diterima. Untuk development di browser
-tanpa aplikasi, sediakan mode dev yang mengisi `init` dari config lokal; mode itu tidak
-boleh ikut di build produksi.
+Di dalam aplikasi, jangan memanggil API apa pun sebelum `init` diterima. Token yang
+kosong atau ditolak tidak dikembalikan ke aplikasi: game sendiri yang meminta customer
+login (§5.2). Tanpa aplikasi (browser biasa), game berjalan dalam mode mandiri (§5.4).
 
 ---
 
-## 3. Koneksi ke API
+## 5. Koneksi ke API dan token
+
+### 5.1 Bentuk response dan error
 
-- Header: `Authorization: Bearer <token>` dari `init`.
 - Sukses: `{ "success": true, "data": { … }, "errors": null }`.
 - Gagal: `{ "success": false, "data": null, "errors": [{ "code", "entity", "cause" }] }`.
   `cause` berbahasa Inggris; jangan tampilkan mentah ke customer.
+- Contoh response di dokumen ini adalah isi `data`, kecuali yang menampilkan amplop
+  lengkap (§6.4).
 
 | `errors[0].code` | HTTP | Arti | Yang dilakukan game |
 |---|---|---|---|
-| `303`, `310` | 400 | Request salah format | Bug di game; pesan umum |
+| `304` dengan `entity` `auth_handler` | 400 | **Token tidak ada atau tidak berlaku** | Layar login (§5.2) |
 | `304` | 400 | Ditolak aturan bisnis | Lihat tabel per endpoint |
+| `303`, `310` | 400 | Request salah format | Bug di game; pesan umum |
 | `404` | 404 | Game/session tidak ada atau bukan milik customer | Pesan "tidak ditemukan", kembali ke aplikasi |
-| `900` | 500 | Error server | Retry (§6) |
+| `900` | 500 | Error server | Retry (§8) |
 
-**Token tidak berlaku** (kedaluwarsa, salah) dijawab HTTP 400 dengan code `304`, sama
-seperti penolakan bisnis. Bedakan lewat `entity`: `auth_handler` untuk token,
-`enakgame_service` untuk aturan EnakGame. Pada `auth_handler`, kirim `token_expired`,
-tunggu `token`, lalu ulangi request yang sama.
+Backend **tidak** memakai HTTP 401. Token yang ditolak dijawab HTTP 400 dengan code
+`304`, sama seperti penolakan bisnis; bedakan lewat `entity`: `auth_handler` untuk token,
+`enakgame_service` untuk aturan EnakGame.
+
+### 5.2 Token tidak ada atau ditolak: customer login di game
+
+Token didapat dari `init` (game dibuka dari aplikasi) atau dari login di game. Setiap
+kali tidak ada token yang berlaku, game menampilkan **layar login akun customer**
+(§5.3).
+
+| Keadaan | Cara mengenali | Yang dilakukan game |
+|---|---|---|
+| `init` datang dengan token | `token` terisi | Pakai token itu, tanpa layar login |
+| `init` datang tanpa token | `token` kosong, `null`, atau tidak ada | Layar login |
+| Dibuka tanpa aplikasi (browser biasa) | `window.EnakGameHost` tidak ada | Mode mandiri (§5.4), dimulai dari layar login |
+| `init` tidak datang | Tidak ada `init` 5 detik setelah `ready` | Kirim `ready` sekali lagi. Masih tidak datang dalam 5 detik: mode mandiri (§5.4) |
+| Token ditolak backend | HTTP 400, `code` `304`, `entity` `auth_handler` | Layar login dengan pesan "Sesi kamu berakhir, silakan login lagi". Setelah login berhasil, ulangi request yang sama **satu kali** (body dan `Idempotency-Key` sama) |
+| Token hasil login langsung ditolak lagi | Penolakan `auth_handler` kedua untuk request yang sama | Berhenti: "Login bermasalah, coba buka ulang game" dengan tombol Keluar. Jangan menampilkan login berulang-ulang |
+| Customer login dengan akun lain | `GET /sessions/:id` untuk session tersimpan menjawab `404` | Hapus `session_id` dari `sessionStorage`, tampilkan layar awal (§6.4) |
+
+Token ditolak sebelum apa pun diproses: start yang ditolak tidak memotong EnakCoin, dan
+complete yang ditolak tidak menyelesaikan session. Jadi aman mengulang request yang
+sama setelah login. Timer `expires_at` tetap berjalan selama customer login; complete
+setelah `expires_at` ditolak dan entry cost **tidak** dikembalikan (§7).
+
+Token hasil login di game tidak dikirim ke aplikasi; aplikasi mengurus tokennya
+sendiri.
+
+`cause` dari `auth_handler` hanya untuk debugging, jangan dicocokkan di kode:
+
+| `cause` | Penyebab |
+|---|---|
+| `Authorization header is required` | Header tidak dikirim. Bug di game: memanggil API sebelum ada token |
+| `Invalid authorization header format` | Header bukan `Bearer <token>` |
+| `Invalid token: …` | Token kedaluwarsa, rusak, atau dari environment lain (staging vs. produksi) |
+| `Invalid token type` | Yang dipakai refresh token, bukan access token |
+| `Token is not valid`, `Customer ID not found in token`, `Phone number not found in token` | Token bukan token customer yang sah |
+
+### 5.3 Layar login — `POST /customer-auth/login`
+
+Form berisi nomor HP dan password akun customer, sama dengan akun di aplikasi. Endpoint
+ini tidak memakai header `Authorization`.
+
+```json
+{ "phone_number": "6281234561234", "password": "rahasia123" }
+```
+
+Response lengkap, termasuk amplopnya. Token ada di **`data.data.access_token`**:
+
+```json
+{
+  "success": true,
+  "data": {
+    "status": "SUCCESS",
+    "message": "Login successful.",
+    "data": {
+      "access_token": "eyJ…",
+      "refresh_token": "eyJ…",
+      "user": { "id": "…", "name": "Budi", "phone_number": "6281234561234", "birth_date": "2000-01-31" }
+    }
+  },
+  "errors": null
+}
+```
+
+- Pakai `access_token` saja. `refresh_token` ditolak endpoint customer dan belum ada
+  endpoint refresh; abaikan dan jangan disimpan.
+- Token hanya di memori (§1). Halaman dimuat ulang berarti login lagi, kecuali di dalam
+  aplikasi yang mengirim token lewat `init`.
+- Password hanya dipegang selama request login: jangan disimpan, di-log, atau dikirim
+  ke analytics.
+- `user.name` boleh ditampilkan, mis. "Main sebagai Budi", dengan tombol "Ganti akun"
+  yang menghapus token dari memori lalu menampilkan login lagi.
+- Nomor HP boleh ditulis `0812…`, `+62 812…`, `62812…`, atau `812…` (spasi dan `-`
+  boleh). Backend mengubahnya menjadi format baku **`62812…`**, dan format itu juga yang
+  dikembalikan di `user.phone_number`. Hanya nomor HP Indonesia (`628…`) yang diterima;
+  selain itu ditolak `invalid phone number format`.
+- Registrasi tidak ada di game. Tampilkan "Belum punya akun atau pendaftaran belum
+  selesai? Lanjutkan di aplikasi."
+
+| `code` | `entity` | HTTP | Arti (`cause`) | Tampilan |
+|---|---|---|---|---|
+| `304` | `customer_auth_service` | 400 | Nomor HP tidak terdaftar atau password salah (`invalid phone number or password`), atau pendaftaran belum selesai (`customer not properly registered`) | **"Nomor HP atau password salah."** |
+| `304` | `request` | 400 | Format salah: `invalid phone number format`, `phone number is required`, `password is required` | "Periksa nomor HP dan password." Cek juga di game sebelum mengirim |
+| `303` | `request` | 400 | Body tidak lengkap | Bug di game |
+| `429` | `customer_auth_service` | 429 | Terlalu banyak percobaan login untuk nomor ini; `data.locked_until` (RFC3339 UTC) | "Terlalu banyak percobaan. Coba lagi pukul {jam}." Nonaktifkan tombol Masuk sampai `locked_until` |
+| `900` | – | 500 | Error server | "Gagal login, coba lagi." |
+
+Login yang gagal jangan diulang otomatis. Setiap nomor HP hanya boleh mencoba login
+5 kali dalam 15 menit, berhasil maupun gagal; login yang berhasil memulai hitungan
+dari nol. Percobaan ke-6 ditolak `429` sampai 15 menit itu habis, juga bila
+password-nya benar. Batas ini berlaku untuk nomor HP, bukan perangkat, dan sama untuk
+aplikasi customer.
+
+### 5.4 Mode mandiri (tanpa aplikasi)
+
+Dipakai saat game dibuka di browser biasa, atau saat aplikasi tidak mengirim `init`
+(§5.2). Juga dipakai untuk development dengan config staging.
+
+1. `api_base_url` diambil dari config build per environment (staging, produksi), bukan
+   dari URL atau input customer.
+2. Tampilkan layar login (§5.3).
+3. Panggil `GET /customer/enakgame/games` dan ambil game dengan `slug` milik build ini;
+   `id`-nya menjadi `game_id`. Tidak ada → "Game tidak tersedia untuk akun ini."
+4. Lanjutkan seperti biasa: pemulihan session (§6.4), lalu layar awal.
+
+Tanpa aplikasi tidak ada bridge: `balance_changed` dan `close` tidak dikirim, dan tombol
+Keluar kembali ke layar awal game.
+
+### 5.5 Contoh helper API
+
+Helper ini menangani token dari `init`, layar login, dan token yang ditolak:
+
+```js
+let apiBaseUrl = CONFIG.apiBaseUrl; // config build per environment; init menimpanya
+let gameId = null;                  // dari init; mode mandiri: dicari lewat slug (§5.4)
+let token = null;                   // hanya di memori
+let loginWaiters = [];              // request yang menunggu customer login
+
+const hasHost = () => typeof window.EnakGameHost !== 'undefined';
+const toHost = (msg) => hasHost() && window.EnakGameHost.postMessage(JSON.stringify(msg));
+
+window.enakGame = {
+  receive(raw) {
+    const msg = JSON.parse(raw);
+    if (msg.type !== 'init') return;
+    apiBaseUrl = msg.api_base_url;
+    gameId = msg.game_id;
+    token = msg.token || null;      // kosong → layar login saat request pertama
+    onInit();                       // pemulihan session (§6.4), lalu layar awal
+  },
+};
+
+// Menampilkan layar login; selesai setelah customer berhasil login.
+function waitForLogin(message) {
+  return new Promise((resolve) => {
+    if (loginWaiters.length === 0) showLoginScreen(message);
+    loginWaiters.push(resolve);
+  });
+}
+
+// Dipanggil tombol Masuk. Error dilempar ke layar login dan ditampilkan sesuai §5.3.
+async function login(phoneNumber, password) {
+  const res = await fetch(apiBaseUrl + '/customer-auth/login', {
+    method: 'POST',
+    headers: { 'Content-Type': 'application/json' },
+    body: JSON.stringify({ phone_number: phoneNumber, password }),
+  });
+  const json = await res.json().catch(() => null);
+  if (!json?.success) throw json?.errors?.[0] ?? { code: String(res.status) };
+  token = json.data.data.access_token;
+  hideLoginScreen();
+  loginWaiters.splice(0).forEach((resolve) => resolve());
+}
+
+// Mengembalikan isi `data`, atau melempar errors[0]. Error jaringan ikut dilempar,
+// lalu ditangani pemanggil sesuai §8.
+async function api(method, path, { body, idempotencyKey } = {}) {
+  for (let attempt = 0; ; attempt++) {
+    if (!token) await waitForLogin(attempt === 0 ? null : 'Sesi kamu berakhir, silakan login lagi.');
+    const headers = { Authorization: `Bearer ${token}` };
+    if (body !== undefined) headers['Content-Type'] = 'application/json';
+    if (idempotencyKey) headers['Idempotency-Key'] = idempotencyKey;
+    const res = await fetch(apiBaseUrl + path, {
+      method,
+      headers,
+      body: body === undefined ? undefined : JSON.stringify(body),
+    });
+    const json = await res.json().catch(() => null);
+    if (json?.success) return json.data;
+    const err = json?.errors?.[0] ?? { code: String(res.status) };
+    if (err.entity === 'auth_handler' && attempt === 0) {
+      token = null;                 // login lagi, lalu ulangi request yang sama sekali
+      continue;
+    }
+    throw err;
+  }
+}
+```
 
 ---
 
-## 4. Alur satu kali main
+## 6. Alur satu kali main
 
 ```
-init ─► cek session yang masih berjalan (§4.4)
+init ─► token ada? tidak: login (§5.2) ─► cek session yang masih berjalan (§6.4)
      ─► GET /customer/enakgame/games ─► tampilkan biaya (dan roda, untuk spin)
      ─► tap Main ─► POST /customer/enakgame/sessions      (EnakCoin dipotong)
      ─► permainan berjalan (batas waktu: expires_at)
@@ -103,10 +355,10 @@ init ─► cek session yang masih berjalan (§4.4)
      ─► tampilkan hadiah ─► main lagi atau close
 ```
 
-### 4.1 Data game — `GET /customer/enakgame/games`
+### 6.1 Data game — `GET /customer/enakgame/games`
 
 Mengembalikan semua game aktif organisasi customer. Ambil yang `id`-nya sama dengan
-`game_id` dari `init`.
+`game_id` dari `init`; pada mode mandiri, yang `slug`-nya milik build ini (§5.4).
 
 ```json
 [
@@ -140,11 +392,15 @@ Mengembalikan semua game aktif organisasi customer. Ambil yang `id`-nya sama den
 - `prizes`: hanya ada untuk game ber-reward `PROBABILITY` (spin). Urutan = urutan segmen
   roda. `label` bisa `null`. Bobot peluang tidak pernah dikirim.
 - Game tidak ada di daftar → game sudah dinonaktifkan; tampilkan pesan dan `close`.
+- `slug` bukan yang dibangun untuk build ini (mis. build spin menerima game `runner`)
+  → `game_url` salah dipasang admin. Tampilkan "Game sedang tidak tersedia", `close`,
+  dan laporkan ke tim backoffice.
 
-### 4.2 Mulai — `POST /customer/enakgame/sessions`
+### 6.2 Mulai — `POST /customer/enakgame/sessions`
 
 Header `Idempotency-Key` wajib (maks. 50 karakter, mis. UUID v4). Buat key baru saat
-customer menekan Main; pakai key yang sama bila request diulang karena jaringan.
+customer menekan Main; pakai key yang sama bila request diulang karena jaringan atau
+karena customer login ulang (§5.2).
 
 ```json
 { "game_id": "8a1f…" }
@@ -177,9 +433,10 @@ customer menekan Main; pakai key yang sama bila request diulang karena jaringan.
 | `this Idempotency-Key was already used to start another game` | Bug di game: key dipakai ulang untuk game lain |
 | `the Idempotency-Key header is required` / `… at most 50 characters` | Bug di game |
 
-### 4.3 Kirim hasil — `POST /customer/enakgame/sessions/:id/complete`
+### 6.3 Kirim hasil — `POST /customer/enakgame/sessions/:id/complete`
 
-Kirim sekali saat permainan selesai, sebelum `expires_at`. Body berisi hasil saja:
+Kirim sekali saat permainan selesai, sebelum `expires_at`. Body berisi hasil saja,
+sesuai jenis hadiah game (§2.2):
 
 | Field | Tipe | Untuk |
 |---|---|---|
@@ -188,8 +445,8 @@ Kirim sekali saat permainan selesai, sebelum `expires_at`. Body berisi hasil saj
 | `data` | objek JSON, opsional, maks. 16 KB | Data tambahan untuk audit (durasi per level, dsb.) |
 
 Spin cukup mengirim `{}`. Game skor: `{ "score": 800 }`. Game hasil:
-`{ "outcome": "WIN" }`. Nilai `outcome` yang diterima ditentukan admin per game;
-sepakati daftarnya dengan tim backoffice.
+`{ "outcome": "WIN" }`. Nilai `outcome` yang diterima ditentukan admin per game
+(§2.3).
 
 ```json
 {
@@ -216,20 +473,20 @@ sepakati daftarnya dengan tim backoffice.
   dikembalikan dan tidak ada hadiah. Tampilkan "Game sedang dihentikan, EnakCoin kamu
   dikembalikan."
 - **`reward_total` 0** bisa terjadi: hadiahnya memang 0 (mis. segmen Zonk), batas harian
-  sudah habis, atau hasilnya tidak lolos validasi server (skor di atas batas, terlalu
-  cepat selesai, `outcome` tidak dikenal). Server tidak memberi tahu alasan validasi;
-  tampilkan hasil apa adanya.
+  sudah habis, field yang dibutuhkan jenis hadiahnya tidak dikirim (§2.2), atau hasilnya
+  tidak lolos validasi server (skor di atas batas, terlalu cepat selesai, `outcome`
+  tidak dikenal). Server tidak memberi tahu alasan validasi; tampilkan hasil apa adanya.
 - **Mengirim ulang aman.** Complete untuk session yang sudah selesai mengembalikan
   jawaban yang sama, tanpa hadiah dua kali. Tidak perlu `Idempotency-Key`.
 
 | Penolakan | Arti | Tampilan |
 |---|---|---|
-| `304` `the session has expired` | Lewat `expires_at` | "Waktu bermain habis." (lihat §5) |
+| `304` `the session has expired` | Lewat `expires_at` | "Waktu bermain habis." (lihat §7) |
 | `304` `data must be …` | `data` bukan JSON atau lebih dari 16 KB | Bug di game |
 | `310` | `score` bukan bilangan bulat atau `outcome` bukan string | Bug di game |
 | `404` | Session tidak ada / milik customer lain | Pesan umum |
 
-### 4.4 Pemulihan setelah reload
+### 6.4 Pemulihan setelah reload
 
 Webview bisa memuat ulang halaman game (aplikasi ke background, memori habis, crash)
 saat customer sedang main. EnakCoin sudah terpotong, jadi game wajib menemukan lagi
@@ -249,9 +506,32 @@ session-nya. Dua endpoint dipakai:
 
 **Mencari session** — `GET /customer/enakgame/sessions?game_id=8a1f…&status=STARTED&limit=1`
 
-Bentuk item sama dengan di atas, dibungkus `data` + `pagination`, terbaru di atas.
-Semua query opsional: `game_id`, `status` (`STARTED`, `COMPLETED`, `REFUNDED`,
-`EXPIRED`), `page`, `limit`. `status` atau `game_id` yang tidak valid ditolak `304`.
+Response lengkap, termasuk amplopnya. Daftar session ada di **`data.data`**, terbaru di
+atas:
+
+```json
+{
+  "success": true,
+  "data": {
+    "data": [
+      {
+        "id": "c0d3…", "game_id": "8a1f…", "status": "STARTED", "entry_cost": 5, "reward_total": 0,
+        "started_at": "…", "expires_at": "…", "ended_at": null, "refund_reason": null
+      }
+    ],
+    "pagination": { "page": 1, "limit": 1, "total_count": 1, "total_pages": 1 }
+  },
+  "errors": null
+}
+```
+
+Tidak ada session yang cocok: `data.data` berupa array kosong `[]` (tidak pernah
+`null`). Bentuk lain berarti error, bukan "tidak ada session". Semua query opsional:
+`game_id`, `status` (`STARTED`, `COMPLETED`, `REFUNDED`, `EXPIRED`), `page`, `limit`.
+`status` atau `game_id` yang tidak valid ditolak `304`.
+
+Bila pengecekan ini gagal (jaringan, `5xx`), **jangan** menganggap tidak ada session:
+customer bisa terpotong EnakCoin dua kali. Tampilkan "Coba lagi" sampai berhasil.
 
 **Alurnya, setiap kali menerima `init`:**
 
@@ -265,23 +545,25 @@ Semua query opsional: `game_id`, `status` (`STARTED`, `COMPLETED`, `REFUNDED`,
 
 | Keadaan | Yang dilakukan game |
 |---|---|
-| `STARTED`, sekarang sebelum `expires_at` | **Lanjutkan** session itu: jangan start baru (EnakCoin akan terpotong lagi). Spin: langsung kirim complete `{}` dan tampilkan hasilnya. Game lain: progres main hilang, jadi mulai ulang permainan di session yang sama dengan timer sampai `expires_at`, lalu kirim complete |
+| `STARTED`, sekarang sebelum `expires_at` | **Lanjutkan** session itu: jangan start baru (EnakCoin akan terpotong lagi). Spin: langsung kirim complete `{}` dan tampilkan hasilnya. Game lain: progres main hilang, jadi mulai ulang permainan di session yang sama dengan timer sampai `expires_at`, lalu kirim complete. Complete setelah `expires_at` ditolak, jadi **akhiri ronde otomatis dan kirim skor saat itu** beberapa detik sebelum `expires_at` (mis. 5 detik, untuk jeda jaringan dan selisih jam perangkat) |
 | `STARTED`, `expires_at` sudah lewat | Anggap selesai. Server mengubahnya menjadi `EXPIRED` (atau merefund bila complete sebelumnya gagal karena error server) dalam ±1 menit. Tampilkan "Waktu bermain habis", lalu customer boleh start baru |
 | `COMPLETED` | Hasil sudah dihitung tapi mungkin belum ditampilkan. Kirim ulang `POST /sessions/:id/complete` dengan body apa saja (`{}`): server mengembalikan jawaban yang sama persis, termasuk `prize`, tanpa hadiah dobel. Tampilkan hasilnya |
 | `REFUNDED` | "EnakCoin kamu dikembalikan." |
 | `EXPIRED` | "Waktu bermain habis." |
+| `404` untuk `session_id` tersimpan | Session milik akun lain (customer berganti akun). Hapus `session_id`, lanjut seperti tidak ada session |
 | Tidak ada session | Tampilkan layar awal seperti biasa |
 
 Riwayat main lengkap (tanpa filter) dipakai aplikasi customer, bukan game.
 
 ---
 
-## 5. Batas waktu dan refund
+## 7. Batas waktu dan refund
 
 | Keadaan | Yang terjadi pada EnakCoin |
 |---|---|
 | Hasil dikirim sebelum `expires_at` | Entry cost terpakai, hadiah masuk |
 | Customer menutup game / game crash, hasil tidak pernah dikirim | Session menjadi `EXPIRED` setelah `expires_at`. **Entry cost tidak dikembalikan** |
+| Complete tertahan karena customer harus login ulang sampai `expires_at` lewat | Sama dengan di atas: `EXPIRED`, **entry cost tidak dikembalikan** |
 | Complete gagal karena error server (`5xx`) dan tidak berhasil sampai `expires_at` | Session direfund otomatis (`refund_reason: "SYSTEM_ERROR"`) dalam ±1 menit setelah `expires_at` |
 | Game dinonaktifkan admin saat dimainkan | Session direfund (`GAME_DEACTIVATED`) |
 
@@ -291,24 +573,25 @@ sudah dipakai tidak kembali".
 
 ---
 
-## 6. Retry dan jaringan
+## 8. Retry dan jaringan
 
 | Request | Gagal karena jaringan / `5xx` | Aturan |
 |---|---|---|
 | Start | Ulangi dengan **`Idempotency-Key` yang sama** | Key baru = potong EnakCoin lagi |
 | Complete | Ulangi dengan body yang sama sampai berhasil atau `expires_at` lewat | Aman diulang |
-| Token ditolak (`entity` `auth_handler`) | `token_expired` → tunggu `token` → ulangi | Jangan minta customer login dari dalam game |
+| Token ditolak (`entity` `auth_handler`) | Bukan error jaringan; layar login (§5.2) | Setelah login, ulangi sekali |
+| Login gagal | Tampilkan pesan (§5.3) | Jangan diulang otomatis |
 
 Gunakan backoff (mis. 1 s, 2 s, 4 s) dan tampilkan indikator "Menyimpan hasil…" selama
 complete diulang.
 
 ---
 
-## 7. Spin
+## 9. Spin
 
-1. Gambar roda dari `prizes` (§4.1): satu segmen per entri, urut, dengan `label`
+1. Gambar roda dari `prizes` (§6.1): satu segmen per entri, urut, dengan `label`
    (atau `amount` bila `label` `null`).
-2. Tap Putar → start session (§4.2).
+2. Tap Putar → start session (§6.2).
 3. Mulai animasi berputar, lalu langsung kirim complete dengan `{}`.
 4. Dari response, hentikan roda di segmen `prize.entry`, lalu tampilkan `reward_total`.
 
@@ -318,11 +601,16 @@ saja.
 
 ---
 
-## 8. Checklist
+## 10. Checklist
 
-- [ ] Bridge sesuai kontrak §2 yang sudah disepakati dengan tim aplikasi.
+- [ ] Game baru sudah didaftarkan bersama tim backoffice (§2.3); `slug` diperiksa saat `init` (§6.1).
+- [ ] Body complete sesuai jenis hadiah game (§2.2).
+- [ ] Bridge sesuai kontrak §4 yang sudah disepakati dengan tim aplikasi.
 - [ ] Token hanya di memori; tidak ada di URL, storage, log, atau analytics.
-- [ ] Pemulihan setelah reload (§4.4): session `STARTED` dilanjutkan, bukan start baru; `COMPLETED` ditampilkan lewat complete ulang.
+- [ ] Tanpa token tidak ada request; token kosong atau ditolak → layar login → ulangi request sekali (§5.2).
+- [ ] Login memakai `access_token`; password tidak disimpan; nomor HP/password salah tampil sebagai pesan yang jelas (§5.3).
+- [ ] Mode mandiri (§5.4): dibuka di browser atau `init` tidak datang → login, `game_id` dicari lewat `slug`.
+- [ ] Pemulihan setelah reload (§6.4): session `STARTED` dilanjutkan, bukan start baru; `COMPLETED` ditampilkan lewat complete ulang.
 - [ ] Biaya main dan label event tampil sebelum main.
 - [ ] Satu `Idempotency-Key` per tap Main, dipakai ulang saat retry.
 - [ ] Complete hanya mengirim `score` / `outcome` / `data`, tidak pernah hadiah.

docs/integration-mobile-customer.md

@@ -52,13 +52,19 @@ Tidak ada lagi "token". Semua yang dulu token sekarang EnakCoin.
 - Semua jumlah di request dan response berupa integer.
 - Belum ada endpoint refresh token: bila token ditolak (§2.2, `entity` `auth_handler`),
   customer login ulang.
+- **Nomor HP customer selalu disimpan dan dikembalikan dalam format `62…`** (mis.
+  `6281234561234`). Di request (registrasi, login, kirim ulang OTP, cek nomor, penerima
+  transfer) nomor boleh ditulis `0812…`, `+62 812…`, `62812…`, atau `812…`; backend
+  mengubahnya ke `62…`. Hanya nomor HP Indonesia (`628…`) yang diterima; selain itu
+  ditolak `304` `invalid phone number format`. Pengecualian: nomor penerima transfer
+  yang disamarkan tetap ditampilkan dalam format lokal, `08**-****-1234` (§7.2).
 
 ### 2.1 Registrasi customer
 
 `POST /api/v1/customer-auth/register/start` menerima `organization_id` (opsional):
 
 ```json
-{ "phone_number": "0812…", "name": "Budi", "birth_date": "2000-01-31", "organization_id": "648b96a0-1d1d-414e-baee-37e9d6317b4e" }
+{ "phone_number": "6281234561234", "name": "Budi", "birth_date": "2000-01-31", "organization_id": "648b96a0-1d1d-414e-baee-37e9d6317b4e" }
 ```
 
 - Customer terdaftar di satu organisasi, dan saldonya berlaku di semua outlet organisasi itu.
@@ -78,6 +84,10 @@ Sukses:
 { "success": true, "data": { … }, "errors": null }
 ```
 
+Semua contoh response di dokumen ini adalah isi `data`. Untuk daftar berhalaman, isi
+itu sendiri berbentuk `{ "data": [ … ], "pagination": { … } }`, jadi array-nya ada di
+`data.data` pada response mentah.
+
 Gagal:
 
 ```json
@@ -89,7 +99,7 @@ Gagal:
 | `303`, `310` | 400 | Request tidak lengkap / salah format | Bug di app; tampilkan pesan umum |
 | `304` | 400 | Ditolak aturan bisnis, **atau token tidak berlaku** bila `entity` = `auth_handler` | Pesan yang ramah per fitur; `cause` berbahasa Inggris, jangan tampilkan mentah. Token: login ulang |
 | `404` | 404 | Tidak ditemukan, juga untuk data milik customer lain | Tampilkan "tidak ditemukan" |
-| `429` | 429 | Minta OTP terlalu cepat | Hitung mundur sebelum boleh minta lagi |
+| `429` | 429 | Minta OTP terlalu cepat, atau terlalu banyak percobaan login (§2.4) | Hitung mundur sebelum boleh minta lagi |
 | `PIN_NOT_SET` | 403 | Belum punya PIN | Buka alur buat PIN (§6.2) |
 | `PIN_INVALID` | 400 | PIN salah | §6.5 |
 | `PIN_LOCKED` | 423 | PIN terkunci | §6.5 |
@@ -107,6 +117,25 @@ Endpoint **tukar**, **transfer**, dan **tukar voucher** wajib header `Idempotenc
   dua kali.
 - Jangan pakai ulang key untuk transaksi yang berbeda; server menolaknya (`304`).
 
+### 2.4 Login — `POST /api/v1/customer-auth/login`
+
+`{ "phone_number": "…", "password": "…" }` → token di `data.data.access_token`.
+
+| `errors[0].code` | HTTP | Arti | Tampilan |
+|---|---|---|---|
+| `304`, `entity` `customer_auth_service` | 400 | Nomor HP tidak terdaftar, password salah, atau pendaftaran belum selesai | "Nomor HP atau password salah." |
+| `304`, `entity` `request` | 400 | Format nomor HP salah, field kosong | "Periksa nomor HP dan password." |
+| `429` | 429 | Terlalu banyak percobaan; `data.locked_until` (RFC3339 UTC) | "Terlalu banyak percobaan. Coba lagi pukul {jam}." |
+| `900` | 500 | Error server | "Terjadi kesalahan, coba lagi" |
+
+> **Berubah per 9 Okt 2026.** Sebelumnya nomor HP atau password salah dijawab `900`
+> (HTTP 500) dengan `cause` `invalid password` / `customer not found`. Bila app
+> menangani login gagal dari HTTP 500 atau teks `cause` itu, ganti ke tabel di atas.
+
+Setiap nomor HP hanya boleh mencoba login 5 kali dalam 15 menit; login yang berhasil
+memulai hitungan dari nol. Percobaan ke-6 ditolak `429` sampai 15 menit itu habis, juga
+bila password-nya benar.
+
 ---
 
 ## 3. Layar yang perlu dibuat
@@ -495,7 +524,7 @@ Jumlah yang salah ditolak sebelum PIN dicek, jadi tidak memakan jatah percobaan
 1. Pilih mata uang (EnakPoint / EnakCoin), isi nomor HP penerima dan jumlah.
 2. Cek penerima:
 
-   `GET /api/v1/customer/wallet/transfer/recipient?phone=081234561234`
+   `GET /api/v1/customer/wallet/transfer/recipient?phone=6281234561234`
 
    ```json
    { "name": "Bu*** Sa***", "phone_number": "08**-****-1234" }
@@ -512,7 +541,7 @@ Jumlah yang salah ditolak sebelum PIN dicek, jadi tidak memakan jatah percobaan
    `POST /api/v1/customer/wallet/transfer` + header `Idempotency-Key`
 
    ```json
-   { "currency": "POINT", "amount": 120, "recipient_phone": "081234561234", "pin": "482913" }
+   { "currency": "POINT", "amount": 120, "recipient_phone": "6281234561234", "pin": "482913" }
    ```
 
    ```json
@@ -597,7 +626,7 @@ log server game dan riwayat webview.
 ### 8.3 Bridge (sisi aplikasi)
 
 > **Usulan.** Kontrak ini sama dengan [`integration-enakgame.md`](./integration-enakgame.md)
-> §2 dan belum diimplementasikan. Sepakati dengan tim EnakGame sebelum mulai.
+> §4 dan belum diimplementasikan. Sepakati dengan tim EnakGame sebelum mulai.
 
 - Game → aplikasi: JavaScript channel webview bernama **`EnakGameHost`**; setiap pesan
   berupa JSON string.
@@ -605,11 +634,14 @@ log server game dan riwayat webview.
 
 | Pesan masuk dari game | Yang dilakukan aplikasi |
 |---|---|
-| `{ "type": "ready" }` | Kirim `{ "type": "init", "api_base_url": "<base URL>/api/v1", "token": "<token customer>", "game_id": "<id game yang dibuka>" }` |
-| `{ "type": "token_expired" }` | Login ulang customer (tidak ada refresh token), lalu kirim `{ "type": "token", "token": "<token baru>" }` |
+| `{ "type": "ready" }` | Kirim `{ "type": "init", "api_base_url": "<base URL>/api/v1", "token": "<access token customer>", "game_id": "<id game yang dibuka>" }`. Jawab setiap `ready`, termasuk setelah halaman game dimuat ulang. Access token, bukan refresh token (ditolak backend) |
 | `{ "type": "balance_changed", "coin_balance": 15 }` | Perbarui saldo EnakCoin yang ditampilkan aplikasi |
 | `{ "type": "close" }` | Tutup webview, muat ulang beranda |
 
+Bila token kosong atau ditolak backend, game menampilkan layar login akun customer
+sendiri; aplikasi tidak perlu menangani apa pun, dan token hasil login di game tidak
+dikirim balik ke aplikasi.
+
 Abaikan pesan dengan `type` lain. Tombol back Android jangan langsung menutup webview:
 tampilkan konfirmasi "Keluar dari game? EnakCoin yang sudah dipakai untuk main tidak
 kembali", lalu tutup. Tidak perlu mengirim pesan ke game.
@@ -731,7 +763,9 @@ minta PIN → kirim dengan header `Idempotency-Key`:
 ### 9.3 Voucher saya — `GET /customer/vouchers/redemptions?page=1&limit=20`
 
 Daftar penukaran customer, terbaru di atas, dengan bentuk item sama seperti response
-§9.2 (tanpa `point_balance` dan `replayed`), dibungkus `data` + `pagination`.
+§9.2 (tanpa `point_balance` dan `replayed`). Seperti semua daftar berhalaman di dokumen
+ini, array-nya ada di `data.data` dan pagination di `data.pagination` di dalam amplop
+response (§2.2); daftar kosong berupa `[]`.
 
 | `status` | Tampilan |
 |---|---|

internal/app/app.go

@@ -307,6 +307,7 @@ type repositories struct {
 	campaignRepo                   repository.CampaignRepository
 	campaignRuleRepo               repository.CampaignRuleRepository
 	customerAuthRepo               repository.CustomerAuthRepository
+	customerLoginAttemptRepo       repository.CustomerLoginAttemptRepository
 	otpRepo                        repository.OtpRepository
 	sessionRepo                    repository.SessionRepository
 	txManager                      *repository.TxManager
@@ -359,6 +360,7 @@ func (a *App) initRepositories() *repositories {
 		campaignRepo:                   repository.NewCampaignRepository(a.db),
 		campaignRuleRepo:               repository.NewCampaignRuleRepository(a.db),
 		customerAuthRepo:               repository.NewCustomerAuthRepository(a.db),
+		customerLoginAttemptRepo:       repository.NewCustomerLoginAttemptRepository(a.redisClient),
 		otpRepo:                        repository.NewOtpRepository(a.db),
 		sessionRepo:                    repository.NewSessionRepository(a.redisClient),
 		txManager:                      repository.NewTxManager(a.db),
@@ -488,7 +490,7 @@ func (a *App) initProcessors(cfg *config.Config, repos *repositories) *processor
 		omsetTrackerProcessor:               processor.NewOmsetTrackerProcessor(repos.omsetTrackerRepo),
 		campaignProcessor:                   processor.NewCampaignProcessor(repos.campaignRepo),
 		campaignRuleProcessor:               processor.NewCampaignRuleProcessor(repos.campaignRuleRepo),
-		customerAuthProcessor:               processor.NewCustomerAuthProcessor(repos.customerAuthRepo, otpProcessor, repos.otpRepo, cfg.GetCustomerJWTSecret(), cfg.GetCustomerJWTExpiresTTL()),
+		customerAuthProcessor:               processor.NewCustomerAuthProcessor(repos.customerAuthRepo, repos.customerLoginAttemptRepo, otpProcessor, repos.otpRepo, cfg.GetCustomerJWTSecret(), cfg.GetCustomerJWTExpiresTTL()),
 		customerPointsProcessor:             processor.NewCustomerPointsProcessor(processor.NewWalletQueryProcessor(repos.walletQueryRepo, processor.NewLoyaltySettingsProcessor(repos.loyaltySettingsRepo, repos.txManager))),
 		otpProcessor:                        otpProcessor,
 		fileClient:                          fileClient,

internal/constants/error.go

@@ -67,6 +67,7 @@ const (
 	EnakGameServiceEntity           = "enakgame_service"
 	LoyaltySettingsServiceEntity    = "loyalty_settings_service"
 	CustomerPinServiceEntity        = "customer_pin_service"
+	CustomerAuthServiceEntity       = "customer_auth_service"
 )
 
 var HttpErrorMap = map[string]int{

internal/handler/customer_auth_handler.go

@@ -1,9 +1,12 @@
 package handler
 
 import (
+	"errors"
+
 	"apskel-pos-be/internal/constants"
 	"apskel-pos-be/internal/contract"
 	"apskel-pos-be/internal/logger"
+	"apskel-pos-be/internal/processor"
 	"apskel-pos-be/internal/service"
 	"apskel-pos-be/internal/util"
 	"apskel-pos-be/internal/validator"
@@ -161,13 +164,36 @@ func (h *CustomerAuthHandler) Login(c *gin.Context) {
 	response, err := h.customerAuthService.Login(ctx, &req)
 	if err != nil {
 		logger.FromContext(c.Request.Context()).WithError(err).Error("CustomerAuthHandler::Login -> service call failed")
-		util.HandleResponse(c.Writer, c.Request, contract.BuildErrorResponse([]*contract.ResponseError{contract.NewResponseError(constants.InternalServerErrorCode, constants.RequestEntity, err.Error())}), "CustomerAuthHandler::Login")
+		util.HandleResponse(c.Writer, c.Request, loginErrorResponse(err), "CustomerAuthHandler::Login")
 		return
 	}
 
 	util.HandleResponse(c.Writer, c.Request, contract.BuildSuccessResponse(response), "CustomerAuthHandler::Login")
 }
 
+// loginErrorResponse answers a phone number with too many attempts with 429 and when it
+// may try again, a refused login with 304 and its reason, and anything else with 900.
+func loginErrorResponse(err error) *contract.Response {
+	var locked *processor.CustomerLoginLockedError
+	if errors.As(err, &locked) {
+		return &contract.Response{
+			Success: false,
+			Data:    map[string]interface{}{"locked_until": locked.Until},
+			Errors:  []*contract.ResponseError{contract.NewResponseError(constants.TooManyRequestsErrorCode, constants.CustomerAuthServiceEntity, locked.Error())},
+		}
+	}
+	for _, refused := range []error{processor.ErrCustomerLoginInvalid, processor.ErrCustomerNotRegistered} {
+		if errors.Is(err, refused) {
+			return contract.BuildErrorResponse([]*contract.ResponseError{
+				contract.NewResponseError(constants.ValidationErrorCode, constants.CustomerAuthServiceEntity, refused.Error()),
+			})
+		}
+	}
+	return contract.BuildErrorResponse([]*contract.ResponseError{
+		contract.NewResponseError(constants.InternalServerErrorCode, constants.RequestEntity, err.Error()),
+	})
+}
+
 func (h *CustomerAuthHandler) ResendOtp(c *gin.Context) {
 	ctx := c.Request.Context()
 

internal/handler/customer_auth_handler_test.go

@@ -0,0 +1,245 @@
+package handler
+
+import (
+	"bytes"
+	"context"
+	"encoding/json"
+	"errors"
+	"net/http"
+	"net/http/httptest"
+	"testing"
+	"time"
+
+	"github.com/gin-gonic/gin"
+	"github.com/google/uuid"
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+	"golang.org/x/crypto/bcrypt"
+
+	"apskel-pos-be/internal/entities"
+	applogger "apskel-pos-be/internal/logger"
+	"apskel-pos-be/internal/processor"
+	"apskel-pos-be/internal/service"
+	"apskel-pos-be/internal/validator"
+)
+
+// customerAuthRepoFake holds customers by phone number. Only the login lookup is used.
+type customerAuthRepoFake struct {
+	customers map[string]*entities.Customer
+	err       error
+}
+
+func (f *customerAuthRepoFake) GetCustomerByPhoneNumber(_ context.Context, phone string) (*entities.Customer, error) {
+	if f.err != nil {
+		return nil, f.err
+	}
+	return f.customers[phone], nil
+}
+
+func (f *customerAuthRepoFake) GetCustomerByID(context.Context, string) (*entities.Customer, error) {
+	return nil, nil
+}
+func (f *customerAuthRepoFake) CreateCustomer(context.Context, *entities.Customer) error { return nil }
+func (f *customerAuthRepoFake) UpdateCustomer(context.Context, *entities.Customer) error { return nil }
+func (f *customerAuthRepoFake) CheckPhoneNumberExists(context.Context, string) (bool, error) {
+	return false, nil
+}
+func (f *customerAuthRepoFake) SetCustomerPassword(context.Context, string, string) error {
+	return nil
+}
+func (f *customerAuthRepoFake) OrganizationExists(context.Context, uuid.UUID) (bool, error) {
+	return false, nil
+}
+func (f *customerAuthRepoFake) OrganizationIDs(context.Context, int) ([]uuid.UUID, error) {
+	return nil, nil
+}
+
+// loginAttemptsFake counts attempts per phone number in one window that never ends.
+type loginAttemptsFake struct {
+	counts map[string]int64
+	err    error
+}
+
+func (f *loginAttemptsFake) Hit(_ context.Context, phone string, window time.Duration) (int64, time.Duration, error) {
+	if f.err != nil {
+		return 0, 0, f.err
+	}
+	f.counts[phone]++
+	return f.counts[phone], window, nil
+}
+
+func (f *loginAttemptsFake) Reset(_ context.Context, phone string) error {
+	delete(f.counts, phone)
+	return nil
+}
+
+const (
+	loginTestPassword   = "rahasia123"
+	loginTestRegistered = "6281234561234"
+	loginTestUnfinished = "6281234569999"
+)
+
+type loginTest struct {
+	repo     *customerAuthRepoFake
+	attempts *loginAttemptsFake
+	router   *gin.Engine
+}
+
+func newLoginTest(t *testing.T) *loginTest {
+	t.Helper()
+	applogger.Setup("fatal", "json")
+	hash, err := bcrypt.GenerateFromPassword([]byte(loginTestPassword), bcrypt.MinCost)
+	require.NoError(t, err)
+	hashStr := string(hash)
+	registered, unfinished := loginTestRegistered, loginTestUnfinished
+	birth := time.Date(2000, 1, 31, 0, 0, 0, 0, time.UTC)
+	lt := &loginTest{
+		repo: &customerAuthRepoFake{customers: map[string]*entities.Customer{
+			registered: {ID: uuid.New(), Name: "Budi", PhoneNumber: &registered, BirthDate: &birth, PasswordHash: &hashStr},
+			unfinished: {ID: uuid.New(), Name: "Sari", PhoneNumber: &unfinished},
+		}},
+		attempts: &loginAttemptsFake{counts: map[string]int64{}},
+	}
+	h := NewCustomerAuthHandler(
+		service.NewCustomerAuthService(processor.NewCustomerAuthProcessor(lt.repo, lt.attempts, nil, nil, "test", 60)),
+		validator.NewCustomerAuthValidator(),
+	)
+	gin.SetMode(gin.TestMode)
+	lt.router = gin.New()
+	lt.router.POST("/customer-auth/login", h.Login)
+	return lt
+}
+
+func (lt *loginTest) login(t *testing.T, phone, password string) (int, map[string]any) {
+	t.Helper()
+	body, _ := json.Marshal(map[string]string{"phone_number": phone, "password": password})
+	rec := httptest.NewRecorder()
+	lt.router.ServeHTTP(rec, httptest.NewRequest(http.MethodPost, "/customer-auth/login", bytes.NewReader(body)))
+	var out map[string]any
+	require.NoError(t, json.Unmarshal(rec.Body.Bytes(), &out))
+	return rec.Code, out
+}
+
+func firstLoginError(t *testing.T, out map[string]any) map[string]any {
+	t.Helper()
+	errs, ok := out["errors"].([]any)
+	require.True(t, ok, "errors: %v", out)
+	require.NotEmpty(t, errs)
+	return errs[0].(map[string]any)
+}
+
+func TestCustomerLoginRefusalsAreValidationErrors(t *testing.T) {
+	lt := newLoginTest(t)
+
+	for name, tc := range map[string]struct{ phone, password, cause string }{
+		"wrong password":          {loginTestRegistered, "salah", "invalid phone number or password"},
+		"unknown phone":           {"6280000000000", loginTestPassword, "invalid phone number or password"},
+		"registration unfinished": {loginTestUnfinished, loginTestPassword, "customer not properly registered"},
+	} {
+		t.Run(name, func(t *testing.T) {
+			status, out := lt.login(t, tc.phone, tc.password)
+			assert.Equal(t, http.StatusBadRequest, status)
+			e := firstLoginError(t, out)
+			assert.Equal(t, "304", e["code"])
+			assert.Equal(t, "customer_auth_service", e["entity"])
+			assert.Equal(t, tc.cause, e["cause"])
+		})
+	}
+
+	t.Run("right password", func(t *testing.T) {
+		status, out := lt.login(t, loginTestRegistered, loginTestPassword)
+		require.Equal(t, http.StatusOK, status, "%v", out)
+		inner := out["data"].(map[string]any)["data"].(map[string]any)
+		assert.NotEmpty(t, inner["access_token"])
+	})
+
+	t.Run("the number written another way finds the same customer", func(t *testing.T) {
+		for _, phone := range []string{"081234561234", "+62 812-3456-1234", "81234561234"} {
+			status, out := lt.login(t, phone, loginTestPassword)
+			require.Equal(t, http.StatusOK, status, "%s: %v", phone, out)
+			user := out["data"].(map[string]any)["data"].(map[string]any)["user"].(map[string]any)
+			assert.Equal(t, loginTestRegistered, user["phone_number"], phone)
+		}
+	})
+
+	t.Run("a number that is not an Indonesian mobile number", func(t *testing.T) {
+		status, out := lt.login(t, "021-1234567", loginTestPassword)
+		assert.Equal(t, http.StatusBadRequest, status)
+		e := firstLoginError(t, out)
+		assert.Equal(t, "304", e["code"])
+		assert.Equal(t, "invalid phone number format", e["cause"])
+	})
+
+	t.Run("a failing lookup is still a server error", func(t *testing.T) {
+		lt.repo.err = errors.New("connection refused")
+		defer func() { lt.repo.err = nil }()
+		status, out := lt.login(t, loginTestRegistered, loginTestPassword)
+		assert.Equal(t, http.StatusInternalServerError, status)
+		assert.Equal(t, "900", firstLoginError(t, out)["code"])
+	})
+}
+
+func TestCustomerLoginLocksAfterTooManyAttempts(t *testing.T) {
+	t.Run("the sixth attempt is refused, even with the right password", func(t *testing.T) {
+		lt := newLoginTest(t)
+		for i := 0; i < 5; i++ {
+			status, _ := lt.login(t, loginTestRegistered, "salah")
+			require.Equal(t, http.StatusBadRequest, status, "attempt %d", i+1)
+		}
+		status, out := lt.login(t, loginTestRegistered, loginTestPassword)
+		assert.Equal(t, http.StatusTooManyRequests, status)
+		e := firstLoginError(t, out)
+		assert.Equal(t, "429", e["code"])
+		assert.Equal(t, "customer_auth_service", e["entity"])
+		data, ok := out["data"].(map[string]any)
+		require.True(t, ok, "data: %v", out)
+		until, err := time.Parse(time.RFC3339, data["locked_until"].(string))
+		require.NoError(t, err)
+		assert.WithinDuration(t, time.Now().Add(15*time.Minute), until, time.Minute)
+
+		// Another number is not affected.
+		status, _ = lt.login(t, loginTestUnfinished, loginTestPassword)
+		assert.Equal(t, http.StatusBadRequest, status)
+	})
+
+	t.Run("writing the number another way counts toward the same limit", func(t *testing.T) {
+		lt := newLoginTest(t)
+		for _, phone := range []string{"081234561234", "+6281234561234", "81234561234", "0812-3456-1234", loginTestRegistered} {
+			lt.login(t, phone, "salah")
+		}
+		status, _ := lt.login(t, "081234561234", loginTestPassword)
+		assert.Equal(t, http.StatusTooManyRequests, status)
+	})
+
+	t.Run("unknown numbers lock the same way", func(t *testing.T) {
+		lt := newLoginTest(t)
+		for i := 0; i < 5; i++ {
+			lt.login(t, "6280000000000", "salah")
+		}
+		status, _ := lt.login(t, "6280000000000", "salah")
+		assert.Equal(t, http.StatusTooManyRequests, status)
+	})
+
+	t.Run("a successful login starts the count again", func(t *testing.T) {
+		lt := newLoginTest(t)
+		for i := 0; i < 4; i++ {
+			lt.login(t, loginTestRegistered, "salah")
+		}
+		status, _ := lt.login(t, loginTestRegistered, loginTestPassword)
+		require.Equal(t, http.StatusOK, status)
+		for i := 0; i < 5; i++ {
+			status, _ := lt.login(t, loginTestRegistered, "salah")
+			require.Equal(t, http.StatusBadRequest, status, "attempt %d after the login", i+1)
+		}
+	})
+
+	t.Run("logins go on when the counter is down", func(t *testing.T) {
+		lt := newLoginTest(t)
+		lt.attempts.err = errors.New("redis: connection refused")
+		for i := 0; i < 6; i++ {
+			lt.login(t, loginTestRegistered, "salah")
+		}
+		status, _ := lt.login(t, loginTestRegistered, loginTestPassword)
+		assert.Equal(t, http.StatusOK, status)
+	})
+}

internal/middleware/cors.go

@@ -12,7 +12,7 @@ func CORS() gin.HandlerFunc {
 		}
 		c.Header("Access-Control-Allow-Origin", origin)
 		c.Header("Access-Control-Allow-Credentials", "true")
-		c.Header("Access-Control-Allow-Headers", "Content-Type, Content-Length, Accept-Encoding, X-CSRF-Token, Authorization, accept, origin, Cache-Control, X-Requested-With")
+		c.Header("Access-Control-Allow-Headers", "Content-Type, Content-Length, Accept-Encoding, X-CSRF-Token, Authorization, accept, origin, Cache-Control, X-Requested-With, Idempotency-Key, X-Idempotency-Key")
 		c.Header("Access-Control-Allow-Methods", "POST, OPTIONS, GET, PUT, DELETE")
 
 		if c.Request.Method == "OPTIONS" {

internal/processor/customer_auth_processor.go

@@ -2,12 +2,14 @@ package processor
 
 import (
 	"context"
+	"errors"
 	"fmt"
 	"strings"
 	"time"
 
 	"apskel-pos-be/internal/contract"
 	"apskel-pos-be/internal/entities"
+	"apskel-pos-be/internal/logger"
 	"apskel-pos-be/internal/models"
 	"apskel-pos-be/internal/repository"
 	"apskel-pos-be/internal/util"
@@ -16,6 +18,32 @@ import (
 	"golang.org/x/crypto/bcrypt"
 )
 
+var (
+	// ErrCustomerLoginInvalid means no customer has the phone number or the password is
+	// wrong. Which of the two is not told.
+	ErrCustomerLoginInvalid = errors.New("invalid phone number or password")
+	// ErrCustomerNotRegistered means the customer never set a password: registration
+	// stopped before its last step.
+	ErrCustomerNotRegistered = errors.New("customer not properly registered")
+)
+
+// Login attempts a phone number may make before it has to wait, and the window they
+// are counted in. A successful login starts the count again.
+const (
+	customerLoginMaxAttempts = 5
+	customerLoginWindow      = 15 * time.Minute
+)
+
+// CustomerLoginLockedError means the phone number made too many login attempts and may
+// try again at Until.
+type CustomerLoginLockedError struct {
+	Until time.Time
+}
+
+func (e *CustomerLoginLockedError) Error() string {
+	return fmt.Sprintf("too many login attempts, try again after %s", e.Until.Format(time.RFC3339))
+}
+
 type CustomerAuthProcessor interface {
 	CheckPhoneNumber(ctx context.Context, req *contract.CheckPhoneRequest) (*models.CheckPhoneResponse, error)
 	StartRegistration(ctx context.Context, req *contract.RegisterStartRequest) (*models.RegisterStartResponse, error)
@@ -26,20 +54,22 @@ type CustomerAuthProcessor interface {
 }
 
 type customerAuthProcessor struct {
-	customerAuthRepo repository.CustomerAuthRepository
-	otpProcessor     OtpProcessor
-	otpRepo          repository.OtpRepository
-	jwtSecret        string
-	tokenTTLMinutes  int
+	customerAuthRepo  repository.CustomerAuthRepository
+	loginAttemptsRepo repository.CustomerLoginAttemptRepository
+	otpProcessor      OtpProcessor
+	otpRepo           repository.OtpRepository
+	jwtSecret         string
+	tokenTTLMinutes   int
 }
 
-func NewCustomerAuthProcessor(customerAuthRepo repository.CustomerAuthRepository, otpProcessor OtpProcessor, otpRepo repository.OtpRepository, jwtSecret string, tokenTTLMinutes int) CustomerAuthProcessor {
+func NewCustomerAuthProcessor(customerAuthRepo repository.CustomerAuthRepository, loginAttemptsRepo repository.CustomerLoginAttemptRepository, otpProcessor OtpProcessor, otpRepo repository.OtpRepository, jwtSecret string, tokenTTLMinutes int) CustomerAuthProcessor {
 	return &customerAuthProcessor{
-		customerAuthRepo: customerAuthRepo,
-		otpProcessor:     otpProcessor,
-		otpRepo:          otpRepo,
-		jwtSecret:        jwtSecret,
-		tokenTTLMinutes:  tokenTTLMinutes,
+		customerAuthRepo:  customerAuthRepo,
+		loginAttemptsRepo: loginAttemptsRepo,
+		otpProcessor:      otpProcessor,
+		otpRepo:           otpRepo,
+		jwtSecret:         jwtSecret,
+		tokenTTLMinutes:   tokenTTLMinutes,
 	}
 }
 
@@ -344,6 +374,21 @@ func (p *customerAuthProcessor) SetPassword(ctx context.Context, req *contract.R
 }
 
 func (p *customerAuthProcessor) Login(ctx context.Context, req *contract.CustomerLoginRequest) (*models.CustomerLoginResponse, error) {
+	// Counted before the password is checked, so attempts sent at once all count, and
+	// for numbers without a customer too, so a refusal never tells which numbers have
+	// one.
+	attempts, left, err := p.loginAttemptsRepo.Hit(ctx, req.PhoneNumber, customerLoginWindow)
+	switch {
+	case err != nil:
+		// Without the counter, logins go on unlimited rather than stop for everyone.
+		logger.FromContext(ctx).WithError(err).Error("CustomerAuthProcessor::Login -> failed to count the attempt")
+	case attempts > customerLoginMaxAttempts:
+		if left <= 0 {
+			left = customerLoginWindow
+		}
+		return nil, &CustomerLoginLockedError{Until: time.Now().Add(left).UTC().Truncate(time.Second)}
+	}
+
 	// Get customer by phone number
 	customer, err := p.customerAuthRepo.GetCustomerByPhoneNumber(ctx, req.PhoneNumber)
 	if err != nil {
@@ -351,16 +396,19 @@ func (p *customerAuthProcessor) Login(ctx context.Context, req *contract.Custome
 	}
 
 	if customer == nil {
-		return nil, fmt.Errorf("customer not found")
+		return nil, ErrCustomerLoginInvalid
 	}
 
 	if customer.PasswordHash == nil {
-		return nil, fmt.Errorf("customer not properly registered")
+		return nil, ErrCustomerNotRegistered
 	}
 
 	// Verify password
 	if err := bcrypt.CompareHashAndPassword([]byte(*customer.PasswordHash), []byte(req.Password)); err != nil {
-		return nil, fmt.Errorf("invalid password")
+		return nil, ErrCustomerLoginInvalid
+	}
+	if err := p.loginAttemptsRepo.Reset(ctx, req.PhoneNumber); err != nil {
+		logger.FromContext(ctx).WithError(err).Error("CustomerAuthProcessor::Login -> failed to reset the attempts")
 	}
 
 	// Generate JWT tokens using customer JWT util

internal/processor/wallet_exchange_processor_test.go

@@ -152,7 +152,7 @@ func (f *movePinFake) VerifyPin(_ context.Context, _ uuid.UUID, pin string, acti
 
 func TestWalletExchange_DefaultRateIsOneToOne(t *testing.T) {
 	e := newWalletMoveEnv(t)
-	c := e.member("Budi Santoso", "081234561234")
+	c := e.member("Budi Santoso", "6281234561234")
 	e.earnCoins(t, c, 50, nil)
 
 	res, err := e.exchanges().Exchange(e.ctx, c, 50, "482913", "key-1", models.CustomerPinRequestInfo{})
@@ -187,7 +187,7 @@ func TestWalletExchange_DefaultRateIsOneToOne(t *testing.T) {
 func TestWalletExchange_TenCoinsForThreePoints(t *testing.T) {
 	e := newWalletMoveEnv(t)
 	e.settings.Exchange = models.LoyaltyExchangeSettings{CoinAmount: 10, PointAmount: 3}
-	c := e.member("Budi", "081234561234")
+	c := e.member("Budi", "6281234561234")
 	e.earnCoins(t, c, 35, nil)
 
 	preview, err := e.exchanges().Preview(e.ctx, c, 30)
@@ -206,7 +206,7 @@ func TestWalletExchange_TenCoinsForThreePoints(t *testing.T) {
 func TestWalletExchange_RefusesAmountsThatAreNotAMultiple(t *testing.T) {
 	e := newWalletMoveEnv(t)
 	e.settings.Exchange = models.LoyaltyExchangeSettings{CoinAmount: 10, PointAmount: 3}
-	c := e.member("Budi", "081234561234")
+	c := e.member("Budi", "6281234561234")
 	e.earnCoins(t, c, 50, nil)
 
 	preview, err := e.exchanges().Preview(e.ctx, c, 25)
@@ -227,7 +227,7 @@ func TestWalletExchange_RefusesAmountsThatAreNotAMultiple(t *testing.T) {
 func TestWalletExchange_NeverOutlivesTheCoinLot(t *testing.T) {
 	e := newWalletMoveEnv(t)
 	e.settings.Exchange = models.LoyaltyExchangeSettings{CoinAmount: 10, PointAmount: 3}
-	c := e.member("Budi", "081234561234")
+	c := e.member("Budi", "6281234561234")
 	soon, later := e.at(24*time.Hour), e.at(48*time.Hour)
 	first := e.earnCoins(t, c, 15, soon)
 	second := e.earnCoins(t, c, 15, later)
@@ -268,7 +268,7 @@ func TestWalletExchange_NeverOutlivesTheCoinLot(t *testing.T) {
 func TestWalletExchange_LotTooSmallForAWholePointGivesNone(t *testing.T) {
 	e := newWalletMoveEnv(t)
 	e.settings.Exchange = models.LoyaltyExchangeSettings{CoinAmount: 10, PointAmount: 1}
-	c := e.member("Budi", "081234561234")
+	c := e.member("Budi", "6281234561234")
 	e.earnCoins(t, c, 5, e.at(time.Hour))
 	e.earnCoins(t, c, 5, nil)
 
@@ -281,7 +281,7 @@ func TestWalletExchange_LotTooSmallForAWholePointGivesNone(t *testing.T) {
 
 func TestWalletExchange_NotEnoughCoins(t *testing.T) {
 	e := newWalletMoveEnv(t)
-	c := e.member("Budi", "081234561234")
+	c := e.member("Budi", "6281234561234")
 	e.earnCoins(t, c, 5, nil)
 
 	preview, err := e.exchanges().Preview(e.ctx, c, 6)
@@ -295,7 +295,7 @@ func TestWalletExchange_NotEnoughCoins(t *testing.T) {
 
 func TestWalletExchange_WrongPinMovesNothing(t *testing.T) {
 	e := newWalletMoveEnv(t)
-	c := e.member("Budi", "081234561234")
+	c := e.member("Budi", "6281234561234")
 	e.earnCoins(t, c, 5, nil)
 
 	_, err := e.exchanges().Exchange(e.ctx, c, 5, "000000", "key-1", models.CustomerPinRequestInfo{})
@@ -307,7 +307,7 @@ func TestWalletExchange_WrongPinMovesNothing(t *testing.T) {
 
 func TestWalletExchange_RetryReturnsTheFirstExchangeAtItsRate(t *testing.T) {
 	e := newWalletMoveEnv(t)
-	c := e.member("Budi", "081234561234")
+	c := e.member("Budi", "6281234561234")
 	e.earnCoins(t, c, 100, nil)
 
 	first, err := e.exchanges().Exchange(e.ctx, c, 40, "482913", "key-1", models.CustomerPinRequestInfo{})
@@ -330,7 +330,7 @@ func TestWalletExchange_RetryReturnsTheFirstExchangeAtItsRate(t *testing.T) {
 
 func TestWalletExchange_RequiresAnIdempotencyKey(t *testing.T) {
 	e := newWalletMoveEnv(t)
-	c := e.member("Budi", "081234561234")
+	c := e.member("Budi", "6281234561234")
 	e.earnCoins(t, c, 5, nil)
 
 	_, err := e.exchanges().Exchange(e.ctx, c, 5, "482913", " ", models.CustomerPinRequestInfo{})
@@ -344,7 +344,7 @@ func TestWalletExchange_CappedByThePointExpiry(t *testing.T) {
 	e := newWalletMoveEnv(t)
 	e.now = wib(2026, 6, 1, 10, 0)
 	e.settings.PointExpiry = rolling(30, "DAY", false)
-	c := e.member("Budi", "081234561234")
+	c := e.member("Budi", "6281234561234")
 	soon, later := e.at(24*time.Hour), e.at(90*24*time.Hour)
 	e.earnCoins(t, c, 10, soon)
 	e.earnCoins(t, c, 10, later)

internal/processor/wallet_expiry_processor_test.go

@@ -54,7 +54,7 @@ func (e *walletMoveEnv) expiry(notifier customerNotifier) (*WalletExpiryProcesso
 
 func TestWalletExpiry_ExpiresWhatIsDueAndTellsTheCustomer(t *testing.T) {
 	e := newWalletMoveEnv(t)
-	a := e.member("Anita", "081200005678")
+	a := e.member("Anita", "6281200005678")
 	ord := earn(a, 150, e.at(-time.Hour))
 	ord.Description = "Belanja #ORD-0098"
 	due := e.credit(t, ord)
@@ -102,7 +102,7 @@ func TestWalletExpiry_ExpiresWhatIsDueAndTellsTheCustomer(t *testing.T) {
 
 func TestWalletExpiry_RunningAgainExpiresNothingMore(t *testing.T) {
 	e := newWalletMoveEnv(t)
-	a := e.member("Anita", "081200005678")
+	a := e.member("Anita", "6281200005678")
 	e.credit(t, earn(a, 150, e.at(-time.Hour)))
 	notifier := &notifierFake{}
 
@@ -128,7 +128,7 @@ func TestWalletExpiry_RunningAgainExpiresNothingMore(t *testing.T) {
 
 func TestWalletExpiry_OneFailingLotDoesNotStopTheOthers(t *testing.T) {
 	e := newWalletMoveEnv(t)
-	a := e.member("Anita", "081200005678")
+	a := e.member("Anita", "6281200005678")
 	e.credit(t, earn(a, 150, e.at(-time.Hour)))
 	p, repo := e.expiry(nil)
 	// A lot listed that ExpireLot cannot find.
@@ -142,7 +142,7 @@ func TestWalletExpiry_OneFailingLotDoesNotStopTheOthers(t *testing.T) {
 
 func TestWalletExpiry_NothingDue(t *testing.T) {
 	e := newWalletMoveEnv(t)
-	a := e.member("Anita", "081200005678")
+	a := e.member("Anita", "6281200005678")
 	e.credit(t, earn(a, 150, e.at(time.Hour)))
 	notifier := &notifierFake{}
 	p, _ := e.expiry(notifier)
@@ -206,7 +206,7 @@ func TestWalletExpiry_RemindsOncePerDayBeforeExpiry(t *testing.T) {
 	e.now = wib(2026, 10, 25, 9, 0)
 	e.settings.PointExpiry.ReminderDays = 7
 	e.settings.CoinExpiry.ReminderDays = 0 // no reminders for EnakCoin
-	a := e.member("Anita", "081200005678")
+	a := e.member("Anita", "6281200005678")
 	oct31 := wib(2026, 10, 31, 23, 59)
 	nov30 := wib(2026, 11, 30, 23, 59)
 	e.credit(t, earn(a, 100, &oct31))

internal/processor/wallet_move_db_test.go

@@ -2,6 +2,7 @@ package processor
 
 import (
 	"context"
+	"encoding/binary"
 	"fmt"
 	"os"
 	"sync"
@@ -42,7 +43,7 @@ func walletMoveDB(t *testing.T) (db *gorm.DB, org, a, b uuid.UUID) {
 	require.NoError(t, err)
 
 	org, a, b = uuid.New(), uuid.New(), uuid.New()
-	phoneA, phoneB := "08"+a.String()[:10], "08"+b.String()[:10]
+	phoneA, phoneB := walletTestPhone(a), walletTestPhone(b)
 	require.NoError(t, db.Exec(`INSERT INTO organizations (id, name, plan_type) VALUES (?, 'wallet move test', 'basic')`, org).Error)
 	require.NoError(t, db.Exec(`INSERT INTO customers (id, organization_id, name, phone_number) VALUES (?, ?, 'Anita', ?), (?, ?, 'Budi Santoso', ?)`,
 		a, org, phoneA, b, org, phoneB).Error)
@@ -117,7 +118,7 @@ func TestWalletTransfer_BothWaysAtOnceAgainstPostgres(t *testing.T) {
 		_, err := wallet.Credit(ctx, earn(b, 100, nil))
 		return err
 	}))
-	phone := func(id uuid.UUID) string { return "08" + id.String()[:10] }
+	phone := walletTestPhone
 
 	const rounds = 10
 	errs := make(chan error, 2*rounds)
@@ -235,3 +236,8 @@ func TestWalletExpiry_TwoInstancesAgainstPostgres(t *testing.T) {
 	assert.Equal(t, int64(10), expires)
 	assert.Zero(t, left)
 }
+
+// walletTestPhone is a phone number in its stored form, 628…, unique to the customer.
+func walletTestPhone(id uuid.UUID) string {
+	return fmt.Sprintf("628%09d", binary.BigEndian.Uint64(id[:8])%1_000_000_000)
+}

internal/processor/wallet_trace_processor_test.go

@@ -85,8 +85,8 @@ func findRow(t *testing.T, e *walletMoveEnv, customerID uuid.UUID, txType string
 // redeems 30. Tracing B's redemption leads to A's order #ORD-1.
 func TestWalletTrace_RedemptionLeadsBackToTheSendersOrder(t *testing.T) {
 	e := newWalletMoveEnv(t)
-	a := e.member("Anita", "081200005678")
-	b := e.member("Budi Santoso", "081234561234")
+	a := e.member("Anita", "6281200005678")
+	b := e.member("Budi Santoso", "6281234561234")
 	ord1 := earn(a, 100, e.at(30*24*time.Hour))
 	ord1.Description = "Belanja #ORD-1"
 	ord2 := earn(a, 50, e.at(60*24*time.Hour))
@@ -121,8 +121,8 @@ func TestWalletTrace_RedemptionLeadsBackToTheSendersOrder(t *testing.T) {
 
 func TestWalletTrace_DebitAndCreditOfATransfer(t *testing.T) {
 	e := newWalletMoveEnv(t)
-	a := e.member("Anita", "081200005678")
-	b := e.member("Budi", "081234561234")
+	a := e.member("Anita", "6281200005678")
+	b := e.member("Budi", "6281234561234")
 	e.credit(t, earn(a, 100, e.at(time.Hour)))
 	e.credit(t, earn(a, 50, nil))
 	_, err := e.transfers(nil).Transfer(e.ctx, a, sendPoints(120, "081234561234"), "482913", "key-1", models.CustomerPinRequestInfo{})
@@ -153,7 +153,7 @@ func TestWalletTrace_DebitAndCreditOfATransfer(t *testing.T) {
 
 func TestWalletTrace_OtherOrganizationsRowsAreNotFound(t *testing.T) {
 	e := newWalletMoveEnv(t)
-	a := e.member("Anita", "081200005678")
+	a := e.member("Anita", "6281200005678")
 	res := e.credit(t, earn(a, 10, nil))
 
 	_, err := NewWalletTraceProcessor(walletTraceRepoFake{e}).Trace(e.ctx, uuid.New(), res.Transaction.ID)

internal/processor/wallet_transfer_processor.go

@@ -15,6 +15,7 @@ import (
 	"apskel-pos-be/internal/logger"
 	"apskel-pos-be/internal/models"
 	"apskel-pos-be/internal/repository"
+	"apskel-pos-be/internal/util"
 )
 
 // ErrWalletRecipientNotFound means no customer of the sender's organization has the
@@ -213,10 +214,13 @@ func (p *WalletTransferProcessor) Transfer(ctx context.Context, senderID uuid.UU
 // them: an active customer of the same organization, not the walk-in customer, and
 // not the sender.
 func (p *WalletTransferProcessor) recipient(ctx context.Context, sender *repository.WalletMoveCustomer, phoneNumber string) (*repository.WalletMoveCustomer, error) {
-	phoneNumber = strings.TrimSpace(phoneNumber)
-	if phoneNumber == "" {
+	if strings.TrimSpace(phoneNumber) == "" {
 		return nil, fmt.Errorf("%w: the recipient's phone number is required", ErrWalletMoveRejected)
 	}
+	phoneNumber, err := util.NormalizePhoneNumber(phoneNumber)
+	if err != nil {
+		return nil, fmt.Errorf("%w: the recipient's phone number is not valid", ErrWalletMoveRejected)
+	}
 	recipient, err := p.customers.FindCustomerByPhone(ctx, phoneNumber)
 	if errors.Is(err, repository.ErrWalletNotFound) {
 		return nil, ErrWalletRecipientNotFound
@@ -282,10 +286,14 @@ func maskName(name string) string {
 	return strings.Join(words, " ")
 }
 
-// maskPhoneNumber keeps the first two and the last four digits:
-// "081234561234" → "08**-****-1234".
+// maskPhoneNumber keeps the first two and the last four digits of the number as
+// customers write it, with 0 for 62: "6281234561234" → "08**-****-1234".
 func maskPhoneNumber(phone string) string {
-	runes := []rune(strings.TrimSpace(phone))
+	phone = strings.TrimSpace(phone)
+	if strings.HasPrefix(phone, "62") {
+		phone = "0" + phone[2:]
+	}
+	runes := []rune(phone)
 	if len(runes) < 8 {
 		return "****"
 	}

internal/processor/wallet_transfer_processor_test.go

@@ -37,8 +37,8 @@ func sendPoints(amount int64, phone string) models.WalletTransfer {
 
 func TestWalletTransfer_MovesBalanceWithItsExpiry(t *testing.T) {
 	e := newWalletMoveEnv(t)
-	a := e.member("Anita", "081200005678")
-	b := e.member("Budi Santoso", "081234561234")
+	a := e.member("Anita", "6281200005678")
+	b := e.member("Budi Santoso", "6281234561234")
 	dec, jan := e.at(30*24*time.Hour), e.at(60*24*time.Hour)
 	first := e.credit(t, earn(a, 100, dec))
 	second := e.credit(t, earn(a, 50, jan))
@@ -97,8 +97,8 @@ func TestWalletTransfer_MovesBalanceWithItsExpiry(t *testing.T) {
 
 func TestWalletTransfer_Coins(t *testing.T) {
 	e := newWalletMoveEnv(t)
-	a := e.member("Anita", "081200005678")
-	b := e.member("Budi", "081234561234")
+	a := e.member("Anita", "6281200005678")
+	b := e.member("Budi", "6281234561234")
 	e.earnCoins(t, a, 10, nil)
 
 	_, err := e.transfers(nil).Transfer(e.ctx, a, models.WalletTransfer{Currency: "coin", Amount: 4, RecipientPhone: "081234561234"}, "482913", "key-1", models.CustomerPinRequestInfo{})
@@ -109,14 +109,14 @@ func TestWalletTransfer_Coins(t *testing.T) {
 
 func TestWalletTransfer_RefusesRecipientsItMayNotSendTo(t *testing.T) {
 	e := newWalletMoveEnv(t)
-	a := e.member("Anita", "081200005678")
+	a := e.member("Anita", "6281200005678")
 	e.credit(t, earn(a, 100, nil))
 
-	walkIn := e.member("Walk-in", "081100000000")
+	walkIn := e.member("Walk-in", "6281100000000")
 	e.customers.byID[walkIn].IsDefault = true
-	inactive := e.member("Old", "081100000001")
+	inactive := e.member("Old", "6281100000001")
 	e.customers.byID[inactive].IsActive = false
-	elsewhere := e.member("Other Org", "081100000002")
+	elsewhere := e.member("Other Org", "6281100000002")
 	e.customers.byID[elsewhere].OrganizationID = uuid.New()
 
 	for phone, want := range map[string]error{
@@ -126,6 +126,7 @@ func TestWalletTransfer_RefusesRecipientsItMayNotSendTo(t *testing.T) {
 		"081100000002": ErrWalletRecipientNotFound, // another organization looks like nobody
 		"081999999999": ErrWalletRecipientNotFound,
 		"":             ErrWalletMoveRejected,
+		"021-1234567":  ErrWalletMoveRejected, // not a mobile number
 	} {
 		_, err := e.transfers(nil).Recipient(e.ctx, a, phone)
 		assert.ErrorIs(t, err, want, phone)
@@ -138,18 +139,20 @@ func TestWalletTransfer_RefusesRecipientsItMayNotSendTo(t *testing.T) {
 
 func TestWalletTransfer_RecipientIsMasked(t *testing.T) {
 	e := newWalletMoveEnv(t)
-	a := e.member("Anita", "081200005678")
-	e.member("Budi Santoso", "081234561234")
+	a := e.member("Anita", "6281200005678")
+	e.member("Budi Santoso", "6281234561234")
 
-	got, err := e.transfers(nil).Recipient(e.ctx, a, " 081234561234 ")
-	require.NoError(t, err)
-	assert.Equal(t, &models.WalletTransferRecipient{Name: "Bu*** Sa***", PhoneNumber: "08**-****-1234"}, got)
+	for _, phone := range []string{" 081234561234 ", "6281234561234", "+62 812-3456-1234"} {
+		got, err := e.transfers(nil).Recipient(e.ctx, a, phone)
+		require.NoError(t, err, phone)
+		assert.Equal(t, &models.WalletTransferRecipient{Name: "Bu*** Sa***", PhoneNumber: "08**-****-1234"}, got, phone)
+	}
 }
 
 func TestWalletTransfer_OrganizationLimits(t *testing.T) {
 	e := newWalletMoveEnv(t)
-	a := e.member("Anita", "081200005678")
-	e.member("Budi", "081234561234")
+	a := e.member("Anita", "6281200005678")
+	e.member("Budi", "6281234561234")
 	e.credit(t, earn(a, 1000, nil))
 	e.settings.Transfer = models.LoyaltyTransferSettings{Enabled: true, MinAmount: 10, MaxPerTransaction: ptr(int64(300)), DailyLimit: ptr(int64(500))}
 	send := func(amount int64, key string) error {
@@ -177,8 +180,8 @@ func TestWalletTransfer_OrganizationLimits(t *testing.T) {
 
 func TestWalletTransfer_HeldAfterPinReset(t *testing.T) {
 	e := newWalletMoveEnv(t)
-	a := e.member("Anita", "081200005678")
-	e.member("Budi", "081234561234")
+	a := e.member("Anita", "6281200005678")
+	e.member("Budi", "6281234561234")
 	e.credit(t, earn(a, 100, nil))
 	until := e.now.Add(time.Hour)
 	e.pins.err = &PinError{Code: PinErrTransferBlocked, Until: &until}
@@ -192,8 +195,8 @@ func TestWalletTransfer_HeldAfterPinReset(t *testing.T) {
 
 func TestWalletTransfer_NotEnoughBalance(t *testing.T) {
 	e := newWalletMoveEnv(t)
-	a := e.member("Anita", "081200005678")
-	b := e.member("Budi", "081234561234")
+	a := e.member("Anita", "6281200005678")
+	b := e.member("Budi", "6281234561234")
 	e.credit(t, earn(a, 100, nil))
 	// An expired lot cannot be sent even before the expiry job takes it.
 	e.credit(t, earn(a, 50, e.at(-time.Hour)))
@@ -205,9 +208,9 @@ func TestWalletTransfer_NotEnoughBalance(t *testing.T) {
 
 func TestWalletTransfer_RetryMovesNothingAndTellsNobodyAgain(t *testing.T) {
 	e := newWalletMoveEnv(t)
-	a := e.member("Anita", "081200005678")
-	b := e.member("Budi", "081234561234")
-	e.member("Citra", "081255550000")
+	a := e.member("Anita", "6281200005678")
+	b := e.member("Budi", "6281234561234")
+	e.member("Citra", "6281255550000")
 	e.credit(t, earn(a, 100, nil))
 	notifier := &notifierFake{}
 

internal/repository/customer_login_attempt_repository.go

@@ -0,0 +1,51 @@
+package repository
+
+import (
+	"context"
+	"fmt"
+	"time"
+
+	"github.com/redis/go-redis/v9"
+)
+
+const customerLoginAttemptKeyPrefix = "customer_login:attempts:"
+
+// CustomerLoginAttemptRepository counts customer login attempts per phone number, so a
+// password cannot be guessed by trying many.
+type CustomerLoginAttemptRepository interface {
+	// Hit counts one attempt for the phone number. It returns the attempts counted in
+	// the current window, this one included, and how long the window still runs. A
+	// window starts at the first attempt after the previous one ended.
+	Hit(ctx context.Context, phoneNumber string, window time.Duration) (int64, time.Duration, error)
+	// Reset forgets the attempts of the phone number.
+	Reset(ctx context.Context, phoneNumber string) error
+}
+
+type customerLoginAttemptRepository struct {
+	client *redis.Client
+}
+
+func NewCustomerLoginAttemptRepository(client *redis.Client) CustomerLoginAttemptRepository {
+	return &customerLoginAttemptRepository{client: client}
+}
+
+func (r *customerLoginAttemptRepository) Hit(ctx context.Context, phoneNumber string, window time.Duration) (int64, time.Duration, error) {
+	key := customerLoginAttemptKeyPrefix + phoneNumber
+	// One transaction, so the key never exists without its expiry: concurrent attempts
+	// all count, and a crash cannot leave a number locked for good.
+	pipe := r.client.TxPipeline()
+	pipe.SetNX(ctx, key, 0, window)
+	count := pipe.Incr(ctx, key)
+	left := pipe.PTTL(ctx, key)
+	if _, err := pipe.Exec(ctx); err != nil {
+		return 0, 0, fmt.Errorf("count login attempt: %w", err)
+	}
+	return count.Val(), left.Val(), nil
+}
+
+func (r *customerLoginAttemptRepository) Reset(ctx context.Context, phoneNumber string) error {
+	if err := r.client.Del(ctx, customerLoginAttemptKeyPrefix+phoneNumber).Err(); err != nil {
+		return fmt.Errorf("reset login attempts: %w", err)
+	}
+	return nil
+}

internal/util/phone.go

@@ -0,0 +1,41 @@
+package util
+
+import (
+	"errors"
+	"regexp"
+	"strings"
+)
+
+// ErrInvalidPhoneNumber means a phone number is not an Indonesian mobile number.
+var ErrInvalidPhoneNumber = errors.New("invalid phone number format")
+
+// customerPhonePattern is an Indonesian mobile number in its stored form: 62, then the
+// number without its leading 0 (628…, 10 to 14 digits in all).
+var customerPhonePattern = regexp.MustCompile(`^628\d{7,11}$`)
+
+// NormalizePhoneNumber turns a customer's phone number into the one form it is stored
+// and looked up in, 62…: "0812-3456-1234", "+62 812 3456 1234", "62812…" and "812…"
+// all become "6281234561234". Spaces, dashes, dots and parentheses are dropped.
+func NormalizePhoneNumber(raw string) (string, error) {
+	digits := strings.Map(func(r rune) rune {
+		switch r {
+		case ' ', '-', '.', '(', ')':
+			return -1
+		}
+		return r
+	}, strings.TrimSpace(raw))
+	digits = strings.TrimPrefix(digits, "+")
+	switch {
+	case strings.HasPrefix(digits, "620"):
+		// +62 typed in front of a number that kept its 0.
+		digits = "62" + digits[3:]
+	case strings.HasPrefix(digits, "0"):
+		digits = "62" + digits[1:]
+	case strings.HasPrefix(digits, "8"):
+		digits = "62" + digits
+	}
+	if !customerPhonePattern.MatchString(digits) {
+		return "", ErrInvalidPhoneNumber
+	}
+	return digits, nil
+}

internal/util/phone_test.go

@@ -0,0 +1,49 @@
+package util
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+)
+
+func TestNormalizePhoneNumber(t *testing.T) {
+	for _, raw := range []string{
+		"6281234561234",
+		"+6281234561234",
+		"081234561234",
+		"81234561234",
+		"0812-3456-1234",
+		"+62 812 3456 1234",
+		"(+62) 812.3456.1234",
+		"+62081234561234",
+		" 081234561234 ",
+	} {
+		got, err := NormalizePhoneNumber(raw)
+		require.NoError(t, err, raw)
+		assert.Equal(t, "6281234561234", got, raw)
+	}
+
+	shortest, err := NormalizePhoneNumber("0811234567")
+	require.NoError(t, err)
+	assert.Equal(t, "62811234567", shortest)
+	longest, err := NormalizePhoneNumber("0812345678901")
+	require.NoError(t, err)
+	assert.Equal(t, "62812345678901", longest)
+	_, err = NormalizePhoneNumber("08123456789012")
+	assert.ErrorIs(t, err, ErrInvalidPhoneNumber, "too long")
+
+	for _, raw := range []string{
+		"",
+		"0",
+		"021-1234567",     // a landline, cannot get the WhatsApp OTP
+		"+6521234567",     // not Indonesian
+		"+1 415 555 0100", // not Indonesian
+		"62812",           // too short
+		"0812abc61234",
+		"0812/3456/1234",
+	} {
+		_, err := NormalizePhoneNumber(raw)
+		assert.ErrorIs(t, err, ErrInvalidPhoneNumber, raw)
+	}
+}

internal/validator/customer_auth_validator.go

@@ -9,6 +9,7 @@ import (
 
 	"apskel-pos-be/internal/constants"
 	"apskel-pos-be/internal/contract"
+	"apskel-pos-be/internal/util"
 )
 
 type CustomerAuthValidator interface {
@@ -36,7 +37,7 @@ func (v *CustomerAuthValidatorImpl) ValidateCheckPhoneRequest(req *contract.Chec
 		return errors.New("phone number is required"), constants.ValidationErrorCode
 	}
 
-	if !v.isValidPhoneNumber(req.PhoneNumber) {
+	if !v.normalizePhoneNumber(&req.PhoneNumber) {
 		return errors.New("invalid phone number format"), constants.ValidationErrorCode
 	}
 
@@ -53,7 +54,7 @@ func (v *CustomerAuthValidatorImpl) ValidateRegisterStartRequest(req *contract.R
 		return errors.New("phone number is required"), constants.ValidationErrorCode
 	}
 
-	if !v.isValidPhoneNumber(req.PhoneNumber) {
+	if !v.normalizePhoneNumber(&req.PhoneNumber) {
 		return errors.New("invalid phone number format"), constants.ValidationErrorCode
 	}
 
@@ -161,7 +162,7 @@ func (v *CustomerAuthValidatorImpl) ValidateCustomerLoginRequest(req *contract.C
 		return errors.New("phone number is required"), constants.ValidationErrorCode
 	}
 
-	if !v.isValidPhoneNumber(req.PhoneNumber) {
+	if !v.normalizePhoneNumber(&req.PhoneNumber) {
 		return errors.New("invalid phone number format"), constants.ValidationErrorCode
 	}
 
@@ -174,10 +175,15 @@ func (v *CustomerAuthValidatorImpl) ValidateCustomerLoginRequest(req *contract.C
 }
 
 // Helper validation functions
-func (v *CustomerAuthValidatorImpl) isValidPhoneNumber(phoneNumber string) bool {
-	// Basic phone number validation - adjust regex based on your requirements
-	phoneRegex := regexp.MustCompile(`^\+?[1-9]\d{1,14}$`)
-	return phoneRegex.MatchString(phoneNumber)
+// normalizePhoneNumber rewrites the phone number in the form it is stored in, 62…
+// (util.NormalizePhoneNumber), and reports false when it is not a valid one.
+func (v *CustomerAuthValidatorImpl) normalizePhoneNumber(phoneNumber *string) bool {
+	normalized, err := util.NormalizePhoneNumber(*phoneNumber)
+	if err != nil {
+		return false
+	}
+	*phoneNumber = normalized
+	return true
 }
 
 func (v *CustomerAuthValidatorImpl) isValidDateFormat(date string) bool {
@@ -208,7 +214,7 @@ func (v *CustomerAuthValidatorImpl) ValidateResendOtpRequest(req *contract.Resen
 	}
 
 	// Validate phone number format
-	if !v.isValidPhoneNumber(req.PhoneNumber) {
+	if !v.normalizePhoneNumber(&req.PhoneNumber) {
 		return errors.New("invalid phone number format"), constants.CustomerEntity
 	}
 

migrations/000116_normalize_customer_phone_numbers.down.sql

@@ -0,0 +1,2 @@
+-- Nothing to undo: the forms the numbers were stored in before are not kept, and 62… is
+-- what the code before this migration accepted too.

migrations/000116_normalize_customer_phone_numbers.up.sql

@@ -0,0 +1,62 @@
+-- Customer phone numbers are stored in one form, 62… without + (util.NormalizePhoneNumber),
+-- and every number a customer types is rewritten to it before it is looked up. This
+-- rewrites the numbers stored before, so 0812…, +62 812… and 812… become 62812….
+--
+-- Only one customer may have a number. When several stored numbers become the same one,
+-- the customer that already has it keeps it, else a registered one (with a password),
+-- else the oldest; the others are left as they are. A number that is not an Indonesian
+-- mobile number is left as it is too. Neither can log in until it is fixed by hand:
+--
+--   SELECT id, name, phone_number FROM customers
+--   WHERE phone_number IS NOT NULL AND phone_number !~ '^628[0-9]{7,11}$';
+
+WITH stripped AS (
+    SELECT id, phone_number, password_hash, created_at,
+           regexp_replace(regexp_replace(phone_number, '[[:space:]().-]', '', 'g'), '^\+', '') AS p
+    FROM customers
+    WHERE phone_number IS NOT NULL
+),
+normalized AS (
+    SELECT id, phone_number, password_hash, created_at,
+           CASE
+               WHEN p LIKE '620%' THEN '62' || substr(p, 4)
+               WHEN p LIKE '0%' THEN '62' || substr(p, 2)
+               WHEN p LIKE '8%' THEN '62' || p
+               ELSE p
+           END AS new_phone
+    FROM stripped
+),
+ranked AS (
+    SELECT id, new_phone,
+           row_number() OVER (
+               PARTITION BY new_phone
+               ORDER BY phone_number = new_phone DESC, password_hash IS NOT NULL DESC, created_at, id
+           ) AS rank
+    FROM normalized
+    WHERE new_phone ~ '^628[0-9]{7,11}$'
+)
+UPDATE customers c
+SET phone_number = r.new_phone, updated_at = NOW()
+FROM ranked r
+WHERE c.id = r.id AND r.rank = 1 AND c.phone_number <> r.new_phone;
+
+-- A registration started before this migration finishes with the number in its OTP
+-- session, and a resent OTP is found by it.
+UPDATE otp_sessions
+SET phone_number = n.new_phone, updated_at = NOW()
+FROM (
+    SELECT id,
+           CASE
+               WHEN p LIKE '620%' THEN '62' || substr(p, 4)
+               WHEN p LIKE '0%' THEN '62' || substr(p, 2)
+               WHEN p LIKE '8%' THEN '62' || p
+               ELSE p
+           END AS new_phone
+    FROM (
+        SELECT id, regexp_replace(regexp_replace(phone_number, '[[:space:]().-]', '', 'g'), '^\+', '') AS p
+        FROM otp_sessions
+    ) stripped
+) n
+WHERE otp_sessions.id = n.id
+  AND n.new_phone ~ '^628[0-9]{7,11}$'
+  AND otp_sessions.phone_number <> n.new_phone;