internal/app/app.go

@@ -248,6 +248,8 @@ type repositories struct {
 	expenseRepo                    *repository.ExpenseRepositoryImpl
 	cashAdvanceRepo                *repository.CashAdvanceRepositoryImpl
 	walletRepo                     repository.WalletRepository
+	walletQueryRepo                repository.WalletQueryRepository
+	organizationSettingRepo        repository.OrganizationSettingRepository
 }
 
 func (a *App) initRepositories() *repositories {
@@ -304,6 +306,8 @@ func (a *App) initRepositories() *repositories {
 		expenseRepo:                    repository.NewExpenseRepositoryImpl(a.db),
 		cashAdvanceRepo:                repository.NewCashAdvanceRepositoryImpl(a.db),
 		walletRepo:                     repository.NewWalletRepository(a.db),
+		walletQueryRepo:                repository.NewWalletQueryRepository(a.db),
+		organizationSettingRepo:        repository.NewOrganizationSettingRepository(a.db),
 	}
 }
 
@@ -397,7 +401,7 @@ func (a *App) initProcessors(cfg *config.Config, repos *repositories) *processor
 		campaignProcessor:                   processor.NewCampaignProcessor(repos.campaignRepo),
 		campaignRuleProcessor:               processor.NewCampaignRuleProcessor(repos.campaignRuleRepo),
 		customerAuthProcessor:               processor.NewCustomerAuthProcessor(repos.customerAuthRepo, otpProcessor, repos.otpRepo, cfg.GetCustomerJWTSecret(), cfg.GetCustomerJWTExpiresTTL()),
-		customerPointsProcessor:             processor.NewCustomerPointsProcessor(repos.customerPointsRepo, repos.gameRepo),
+		customerPointsProcessor:             processor.NewCustomerPointsProcessor(processor.NewWalletQueryProcessor(repos.walletQueryRepo, repos.organizationSettingRepo), repos.gameRepo),
 		otpProcessor:                        otpProcessor,
 		fileClient:                          fileClient,
 		inventoryMovementService:            inventoryMovementService,

internal/constants/wallet.go

@@ -42,3 +42,10 @@ const (
 	WalletRefTypeLegacyTokens     = "LEGACY_TOKENS"
 	WalletRefTypeRewardRedemption = "REWARD_REDEMPTION"
 )
+
+// Organization loyalty settings (docs/prd-point-coin.md F2), stored in
+// organization_settings. A key that was never set takes its default.
+const (
+	LoyaltyPointValueKey     = "loyalty.point.value"
+	LoyaltyPointValueDefault = int64(1)
+)

internal/handler/customer_points_handler.go

@@ -1,9 +1,14 @@
 package handler
 
 import (
+	"errors"
+
 	"apskel-pos-be/internal/constants"
 	"apskel-pos-be/internal/contract"
 	"apskel-pos-be/internal/logger"
+	"apskel-pos-be/internal/models"
+	"apskel-pos-be/internal/processor"
+	"apskel-pos-be/internal/repository"
 	"apskel-pos-be/internal/service"
 	"apskel-pos-be/internal/util"
 
@@ -46,7 +51,7 @@ func (h *CustomerPointsHandler) GetCustomerPoints(c *gin.Context) {
 	if err != nil {
 		logger.FromContext(ctx).WithError(err).Error("CustomerPointsHandler::GetCustomerPoints -> service call failed")
 		util.HandleResponse(c.Writer, c.Request, contract.BuildErrorResponse([]*contract.ResponseError{
-			contract.NewResponseError(constants.InternalServerErrorCode, constants.RequestEntity, err.Error()),
+			contract.NewResponseError(walletErrorCode(err), constants.RequestEntity, err.Error()),
 		}), "CustomerPointsHandler::GetCustomerPoints")
 		return
 	}
@@ -80,7 +85,7 @@ func (h *CustomerPointsHandler) GetCustomerTokens(c *gin.Context) {
 	if err != nil {
 		logger.FromContext(ctx).WithError(err).Error("CustomerPointsHandler::GetCustomerTokens -> service call failed")
 		util.HandleResponse(c.Writer, c.Request, contract.BuildErrorResponse([]*contract.ResponseError{
-			contract.NewResponseError(constants.InternalServerErrorCode, constants.RequestEntity, err.Error()),
+			contract.NewResponseError(walletErrorCode(err), constants.RequestEntity, err.Error()),
 		}), "CustomerPointsHandler::GetCustomerTokens")
 		return
 	}
@@ -114,7 +119,7 @@ func (h *CustomerPointsHandler) GetCustomerWallet(c *gin.Context) {
 	if err != nil {
 		logger.FromContext(ctx).WithError(err).Error("CustomerPointsHandler::GetCustomerWallet -> service call failed")
 		util.HandleResponse(c.Writer, c.Request, contract.BuildErrorResponse([]*contract.ResponseError{
-			contract.NewResponseError(constants.InternalServerErrorCode, constants.RequestEntity, err.Error()),
+			contract.NewResponseError(walletErrorCode(err), constants.RequestEntity, err.Error()),
 		}), "CustomerPointsHandler::GetCustomerWallet")
 		return
 	}
@@ -151,3 +156,51 @@ func (h *CustomerPointsHandler) GetFerrisWheelGame(c *gin.Context) {
 
 	util.HandleResponse(c.Writer, c.Request, contract.BuildSuccessResponse(response), "CustomerPointsHandler::GetFerrisWheelGame")
 }
+
+// GetCustomerWalletTransactions is GET /customer/wallet/transactions: the ledger, newest
+// first, filterable by currency, type and date (docs/prd-point-coin.md F6).
+func (h *CustomerPointsHandler) GetCustomerWalletTransactions(c *gin.Context) {
+	ctx := c.Request.Context()
+
+	customerID, ok := c.Get("customer_id")
+	customerIDStr, isString := customerID.(string)
+	if !ok || !isString {
+		logger.FromContext(ctx).Error("Customer ID not found in context")
+		util.HandleResponse(c.Writer, c.Request, contract.BuildErrorResponse([]*contract.ResponseError{
+			contract.NewResponseError(constants.ValidationErrorCode, constants.AuthHandlerEntity, "Customer ID not found"),
+		}), "CustomerPointsHandler::GetCustomerWalletTransactions")
+		return
+	}
+
+	var query models.ListCustomerWalletTransactionsQuery
+	if err := c.ShouldBindQuery(&query); err != nil {
+		util.HandleResponse(c.Writer, c.Request, contract.BuildErrorResponse([]*contract.ResponseError{
+			contract.NewResponseError(constants.MalformedFieldErrorCode, constants.RequestEntity, err.Error()),
+		}), "CustomerPointsHandler::GetCustomerWalletTransactions")
+		return
+	}
+
+	response, err := h.customerPointsService.GetCustomerWalletTransactions(ctx, customerIDStr, query)
+	if err != nil {
+		logger.FromContext(ctx).WithError(err).Error("CustomerPointsHandler::GetCustomerWalletTransactions -> service call failed")
+		util.HandleResponse(c.Writer, c.Request, contract.BuildErrorResponse([]*contract.ResponseError{
+			contract.NewResponseError(walletErrorCode(err), constants.RequestEntity, err.Error()),
+		}), "CustomerPointsHandler::GetCustomerWalletTransactions")
+		return
+	}
+
+	util.HandleResponse(c.Writer, c.Request, contract.BuildSuccessResponse(response), "CustomerPointsHandler::GetCustomerWalletTransactions")
+}
+
+// walletErrorCode tells a bad request apart from a server failure on the wallet
+// endpoints.
+func walletErrorCode(err error) string {
+	switch {
+	case errors.Is(err, processor.ErrInvalidWalletQuery):
+		return constants.ValidationErrorCode
+	case errors.Is(err, repository.ErrWalletNotFound):
+		return constants.NotFoundErrorCode
+	default:
+		return constants.InternalServerErrorCode
+	}
+}

internal/handler/customer_wallet_db_test.go

@@ -0,0 +1,218 @@
+package handler
+
+import (
+	"context"
+	"encoding/json"
+	"net/http"
+	"net/http/httptest"
+	"os"
+	"testing"
+	"time"
+
+	"github.com/gin-gonic/gin"
+	"github.com/google/uuid"
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+	"gorm.io/driver/postgres"
+	"gorm.io/gorm"
+	"gorm.io/gorm/logger"
+
+	"apskel-pos-be/internal/constants"
+	applogger "apskel-pos-be/internal/logger"
+	"apskel-pos-be/internal/processor"
+	"apskel-pos-be/internal/repository"
+	"apskel-pos-be/internal/service"
+)
+
+// Drives the customer wallet endpoints over HTTP down to Postgres, to show the app
+// gets the right numbers from the new endpoints and from the old /points, /tokens
+// and /wallet shapes. Needs TEST_DATABASE_URL pointing at a migrated database; see
+// internal/repository/wallet_repository_test.go.
+func TestCustomerWalletEndpoints_AgainstPostgres(t *testing.T) {
+	dsn := os.Getenv("TEST_DATABASE_URL")
+	if dsn == "" {
+		t.Skip("TEST_DATABASE_URL not set")
+	}
+	applogger.Setup("fatal", "json") // the handlers log their errors; the server sets this up at startup
+	db, err := gorm.Open(postgres.Open(dsn), &gorm.Config{Logger: logger.Default.LogMode(logger.Silent)})
+	require.NoError(t, err)
+
+	org, customer, other := uuid.New(), uuid.New(), uuid.New()
+	customers := []uuid.UUID{customer, other}
+	exec := func(q string, args ...any) {
+		t.Helper()
+		require.NoError(t, db.Exec(q, args...).Error)
+	}
+	exec(`INSERT INTO organizations (id, name, plan_type) VALUES (?, 'wallet api test', 'basic')`, org)
+	exec(`INSERT INTO customers (id, organization_id, name) VALUES (?, ?, 'A'), (?, ?, 'B')`, customer, org, other, org)
+	exec(`INSERT INTO organization_settings (organization_id, key, value) VALUES (?, ?, '100')`, org, constants.LoyaltyPointValueKey)
+	t.Cleanup(func() {
+		db.Exec(`DELETE FROM wallet_lot_allocations WHERE lot_id IN (SELECT id FROM wallet_lots WHERE customer_id IN ?)`, customers)
+		db.Exec(`DELETE FROM wallet_lots WHERE customer_id IN ?`, customers)
+		db.Exec(`DELETE FROM wallet_transactions WHERE customer_id IN ?`, customers)
+		db.Exec(`DELETE FROM customer_wallets WHERE customer_id IN ?`, customers)
+		db.Exec(`DELETE FROM customers WHERE id IN ?`, customers)
+		db.Exec(`DELETE FROM organization_settings WHERE organization_id = ?`, org)
+		db.Exec(`DELETE FROM organizations WHERE id = ?`, org)
+	})
+
+	// Balance: 300 earned in two lots that expire on the same Jakarta day but on
+	// different UTC days, 8 coins, 50 paid, and 20 in a lot that has expired but
+	// that the expiry job has not processed.
+	wallet := processor.NewWalletProcessor(repository.NewWalletRepository(db))
+	txm := repository.NewTxManager(db)
+	next := time.Now().Year() + 1
+	lateNightUTC := time.Date(next, 7, 1, 17, 30, 0, 0, time.UTC) // 2 July 00:30 WIB
+	afternoonUTC := time.Date(next, 7, 2, 10, 0, 0, 0, time.UTC)  // 2 July 17:00 WIB
+	expired := time.Now().Add(-time.Hour)
+	outlet, order, payment := uuid.New(), uuid.New(), uuid.New()
+	require.NoError(t, txm.WithTransaction(context.Background(), func(ctx context.Context) error {
+		if _, err := wallet.Credit(ctx, processor.WalletCreditInput{
+			WalletEntry: processor.WalletEntry{CustomerID: customer, Currency: constants.WalletCurrencyPoint,
+				Type: constants.WalletTxTypeEarn, Amount: 300, ReferenceType: constants.WalletRefTypeOrder,
+				ReferenceID: order, OutletID: &outlet, Description: "Belanja #ORD-1"},
+			Lots: []processor.WalletLotInput{{Amount: 200, ExpiresAt: &afternoonUTC}, {Amount: 100, ExpiresAt: &lateNightUTC}},
+		}); err != nil {
+			return err
+		}
+		if _, err := wallet.Credit(ctx, processor.WalletCreditInput{WalletEntry: processor.WalletEntry{
+			CustomerID: customer, Currency: constants.WalletCurrencyCoin, Type: constants.WalletTxTypeMigration,
+			Amount: 8, ReferenceType: constants.WalletRefTypeLegacyTokens, ReferenceID: customer,
+			Description: "Saldo awal dari sistem lama"}}); err != nil {
+			return err
+		}
+		if _, err := wallet.Debit(ctx, processor.WalletDebitInput{WalletEntry: processor.WalletEntry{
+			CustomerID: customer, Currency: constants.WalletCurrencyPoint, Type: constants.WalletTxTypePayment,
+			Amount: 50, ReferenceType: constants.WalletRefTypePayment, ReferenceID: payment, OutletID: &outlet,
+			Description: "Bayar #ORD-2"}}); err != nil {
+			return err
+		}
+		_, err := wallet.Credit(ctx, processor.WalletCreditInput{
+			WalletEntry: processor.WalletEntry{CustomerID: customer, Currency: constants.WalletCurrencyPoint,
+				Type: constants.WalletTxTypeEarn, Amount: 20, ReferenceType: constants.WalletRefTypeOrder,
+				ReferenceID: uuid.New(), OutletID: &outlet, Description: "Belanja #ORD-0"},
+			Lots: []processor.WalletLotInput{{Amount: 20, ExpiresAt: &expired}},
+		})
+		return err
+	}))
+
+	h := NewCustomerPointsHandler(service.NewCustomerPointsService(processor.NewCustomerPointsProcessor(
+		processor.NewWalletQueryProcessor(repository.NewWalletQueryRepository(db), repository.NewOrganizationSettingRepository(db)),
+		nil,
+	)))
+	gin.SetMode(gin.TestMode)
+	router := gin.New()
+	as := func(id uuid.UUID) gin.HandlerFunc {
+		return func(c *gin.Context) { c.Set("customer_id", id.String()) }
+	}
+	for _, who := range []struct {
+		prefix string
+		id     uuid.UUID
+	}{{"/a", customer}, {"/b", other}, {"/gone", uuid.New()}} {
+		g := router.Group(who.prefix, as(who.id))
+		g.GET("/points", h.GetCustomerPoints)
+		g.GET("/tokens", h.GetCustomerTokens)
+		g.GET("/wallet", h.GetCustomerWallet)
+		g.GET("/wallet/transactions", h.GetCustomerWalletTransactions)
+	}
+	get := func(path string) (int, map[string]any) {
+		t.Helper()
+		rec := httptest.NewRecorder()
+		router.ServeHTTP(rec, httptest.NewRequest(http.MethodGet, path, nil))
+		var body map[string]any
+		require.NoError(t, json.Unmarshal(rec.Body.Bytes(), &body), rec.Body.String())
+		return rec.Code, body
+	}
+	// The balance endpoints wrap their data in {status, message, data}.
+	inner := func(body map[string]any) map[string]any {
+		return body["data"].(map[string]any)["data"].(map[string]any)
+	}
+
+	// Old app: /points and /tokens keep their shape and show the spendable balance.
+	status, body := get("/a/points")
+	require.Equal(t, http.StatusOK, status, body)
+	assert.EqualValues(t, 250, inner(body)["total_points"], "300 - 50; the expired 20 is not spendable")
+	assert.Len(t, inner(body)["points_history"], 3)
+
+	status, body = get("/a/tokens")
+	require.Equal(t, http.StatusOK, status, body)
+	assert.EqualValues(t, 8, inner(body)["total_tokens"])
+
+	// /wallet: new fields, with the old ones still there.
+	status, body = get("/a/wallet")
+	require.Equal(t, http.StatusOK, status, body)
+	w := inner(body)
+	assert.EqualValues(t, 250, w["point_balance"])
+	assert.EqualValues(t, 8, w["coin_balance"])
+	assert.EqualValues(t, 100, w["point_value"])
+	assert.EqualValues(t, 25000, w["point_discount_value"])
+	nearest := w["nearest_expiring"].(map[string]any)
+	// The payment took 50 from the lot expiring first, leaving 50 + 200.
+	assert.Equal(t, map[string]any{"amount": float64(250), "date": time.Date(next, 7, 2, 0, 0, 0, 0, time.UTC).Format("2006-01-02")},
+		nearest["point"], "both lots fall on 2 July in Jakarta although they are on different UTC days")
+	assert.Nil(t, nearest["coin"])
+	for _, legacy := range []string{"total_points", "total_tokens", "points_history", "tokens_history", "last_updated"} {
+		assert.Contains(t, w, legacy)
+	}
+	assert.EqualValues(t, 250, w["total_points"])
+
+	recent := w["recent_transactions"].([]any)
+	require.Len(t, recent, 4)
+	for _, raw := range recent {
+		tx := raw.(map[string]any)
+		assert.NotContains(t, tx, "counterparty_customer_id")
+		assert.NotContains(t, tx, "metadata")
+		if tx["amount"].(float64) > 0 {
+			assert.Contains(t, tx, "source", tx["type"])
+			assert.NotContains(t, tx, "destination")
+		} else {
+			assert.Equal(t, map[string]any{"type": "PAYMENT", "id": payment.String()}, tx["destination"])
+			assert.NotContains(t, tx, "source")
+		}
+	}
+
+	// History with filters.
+	status, body = get("/a/wallet/transactions?currency=POINT&type=EARN&limit=1&page=2")
+	require.Equal(t, http.StatusOK, status, body)
+	page := body["data"].(map[string]any)
+	assert.Equal(t, map[string]any{"page": float64(2), "limit": float64(1), "total_count": float64(2), "total_pages": float64(2)}, page["pagination"])
+	rows := page["data"].([]any)
+	require.Len(t, rows, 1)
+	first := rows[0].(map[string]any)
+	assert.Equal(t, "Belanja #ORD-1", first["description"], "newest first, so page 2 is the older earning")
+	assert.Equal(t, map[string]any{"type": "ORDER", "id": order.String()}, first["source"])
+	assert.Equal(t, lateNightUTC.Format(time.RFC3339), parseTime(t, first["expires_at"]).UTC().Format(time.RFC3339))
+	assert.Len(t, first["lots"], 2)
+
+	today := time.Now().In(time.FixedZone("WIB", 7*3600)).Format("2006-01-02")
+	status, body = get("/a/wallet/transactions?from=" + today + "&to=" + today + "&type=PAYMENT,MIGRATION")
+	require.Equal(t, http.StatusOK, status, body)
+	assert.EqualValues(t, 2, body["data"].(map[string]any)["pagination"].(map[string]any)["total_count"])
+
+	status, _ = get("/a/wallet/transactions?currency=GOLD")
+	assert.Equal(t, http.StatusBadRequest, status)
+	status, _ = get("/a/wallet/transactions?limit=abc")
+	assert.Equal(t, http.StatusBadRequest, status)
+
+	// A customer who has never had a wallet sees zeros, not an error.
+	status, body = get("/b/wallet")
+	require.Equal(t, http.StatusOK, status, body)
+	assert.EqualValues(t, 0, inner(body)["point_balance"])
+	assert.Equal(t, []any{}, inner(body)["recent_transactions"])
+	status, body = get("/b/wallet/transactions")
+	require.Equal(t, http.StatusOK, status, body)
+	assert.Equal(t, []any{}, body["data"].(map[string]any)["data"])
+
+	// A token for a customer that no longer exists.
+	status, _ = get("/gone/wallet")
+	assert.Equal(t, http.StatusNotFound, status)
+}
+
+func parseTime(t *testing.T, v any) time.Time {
+	t.Helper()
+	s, ok := v.(string)
+	require.True(t, ok, "expected a time string, got %v", v)
+	parsed, err := time.Parse(time.RFC3339Nano, s)
+	require.NoError(t, err)
+	return parsed
+}

internal/models/customer_points.go

@@ -109,7 +109,20 @@ type GetCustomerWalletResponse struct {
 	Data    *GetCustomerWalletResponseData `json:"data,omitempty"`
 }
 
+// GetCustomerWalletResponseData is GET /customer/wallet (docs/prd-point-coin.md F6).
 type GetCustomerWalletResponseData struct {
+	// Balances the customer can spend now.
+	PointBalance int64 `json:"point_balance"`
+	CoinBalance  int64 `json:"coin_balance"`
+	// Rupiah value of one EnakPoint, and of the whole point balance. EnakPoint only
+	// ever pays for orders, so the app shows this as "setara potongan Rp …" (K7).
+	PointValue         int64                         `json:"point_value"`
+	PointDiscountValue int64                         `json:"point_discount_value"`
+	NearestExpiring    CustomerWalletNearestExpiring `json:"nearest_expiring"`
+	RecentTransactions []CustomerWalletTransaction   `json:"recent_transactions"`
+
+	// Deprecated: the shape of this endpoint before the wallet, kept for app versions
+	// that still read it. Filled from the wallet like the fields above.
 	TotalPoints   int64               `json:"total_points"`
 	TotalTokens   int64               `json:"total_tokens"`
 	PointsHistory []PointsHistoryItem `json:"points_history,omitempty"`

internal/models/wallet.go

@@ -0,0 +1,71 @@
+package models
+
+import (
+	"time"
+
+	"github.com/google/uuid"
+)
+
+// CustomerWalletTransaction is one ledger row as the customer app shows it
+// (docs/prd-point-coin.md F6).
+type CustomerWalletTransaction struct {
+	ID       uuid.UUID `json:"id"`
+	Currency string    `json:"currency"`
+	Type     string    `json:"type"`
+	// Signed: positive added to the balance, negative taken from it.
+	Amount       int64  `json:"amount"`
+	BalanceAfter int64  `json:"balance_after"`
+	Description  string `json:"description"`
+	// Where the value came from, set on additions.
+	Source *CustomerWalletTransactionRef `json:"source,omitempty"`
+	// Where the value went, set on deductions.
+	Destination           *CustomerWalletTransactionRef `json:"destination,omitempty"`
+	OutletID              *uuid.UUID                    `json:"outlet_id,omitempty"`
+	ReversesTransactionID *uuid.UUID                    `json:"reverses_transaction_id,omitempty"`
+	// Shared by the two rows of an exchange or a transfer.
+	GroupID *uuid.UUID `json:"group_id,omitempty"`
+	// Additions only: the earliest expiry among the lots it created, nil when none of
+	// them expire, and the lots themselves.
+	ExpiresAt *time.Time          `json:"expires_at,omitempty"`
+	Lots      []CustomerWalletLot `json:"lots,omitempty"`
+	CreatedAt time.Time           `json:"created_at"`
+}
+
+// CustomerWalletTransactionRef points at what a ledger row came from or went to, as
+// listed in §8.1: ORDER, PAYMENT, WALLET_TX, GAME_PLAY, LOT, USER and so on.
+type CustomerWalletTransactionRef struct {
+	Type string    `json:"type"`
+	ID   uuid.UUID `json:"id"`
+}
+
+type CustomerWalletLot struct {
+	Amount    int64      `json:"amount"`
+	Remaining int64      `json:"remaining"`
+	ExpiresAt *time.Time `json:"expires_at"`
+}
+
+// CustomerWalletExpiring is how much expires on one day.
+type CustomerWalletExpiring struct {
+	Amount int64 `json:"amount"`
+	// YYYY-MM-DD, Asia/Jakarta.
+	Date string `json:"date"`
+}
+
+// CustomerWalletNearestExpiring is the next day each currency loses balance, nil when
+// nothing is due to expire.
+type CustomerWalletNearestExpiring struct {
+	Point *CustomerWalletExpiring `json:"point"`
+	Coin  *CustomerWalletExpiring `json:"coin"`
+}
+
+// ListCustomerWalletTransactionsQuery is GET /customer/wallet/transactions.
+type ListCustomerWalletTransactionsQuery struct {
+	Page     int    `form:"page"`
+	Limit    int    `form:"limit"`
+	Currency string `form:"currency"`
+	// One type, or several separated by commas.
+	Type string `form:"type"`
+	// Inclusive calendar dates, YYYY-MM-DD, Asia/Jakarta.
+	From string `form:"from"`
+	To   string `form:"to"`
+}

internal/processor/customer_points_processor.go

@@ -3,7 +3,6 @@ package processor
 import (
 	"context"
 	"fmt"
-	"time"
 
 	"apskel-pos-be/internal/models"
 	"apskel-pos-be/internal/repository"
@@ -12,14 +11,14 @@ import (
 )
 
 type CustomerPointsProcessor struct {
-	customerPointsRepo repository.CustomerPointsRepository
-	gameRepo           *repository.GameRepository
+	walletQuery *WalletQueryProcessor
+	gameRepo    *repository.GameRepository
 }
 
-func NewCustomerPointsProcessor(customerPointsRepo repository.CustomerPointsRepository, gameRepo *repository.GameRepository) *CustomerPointsProcessor {
+func NewCustomerPointsProcessor(walletQuery *WalletQueryProcessor, gameRepo *repository.GameRepository) *CustomerPointsProcessor {
 	return &CustomerPointsProcessor{
-		customerPointsRepo: customerPointsRepo,
-		gameRepo:           gameRepo,
+		walletQuery: walletQuery,
+		gameRepo:    gameRepo,
 	}
 }
 
@@ -70,159 +69,74 @@ func (p *CustomerPointsProcessor) DeductPoints(ctx context.Context, customerID u
 	return nil, fmt.Errorf("not implemented")
 }
 
+// The three endpoints below are the customer app's balance screens. They read the
+// EnakPoint & EnakCoin wallet; customer_points and customer_tokens are no longer used
+// for balances (docs/prd-point-coin.md §9).
+
 func (p *CustomerPointsProcessor) GetCustomerTotalPointsAPI(ctx context.Context, customerID string) (*models.GetCustomerPointsResponse, error) {
-	// Get total points
-	totalPoints, err := p.customerPointsRepo.GetCustomerTotalPoints(ctx, customerID)
+	id, err := parseWalletCustomerID(customerID)
 	if err != nil {
-		return nil, fmt.Errorf("failed to get customer total points: %w", err)
+		return nil, err
 	}
-
-	// Get points history (last 10 records)
-	pointsHistory, err := p.customerPointsRepo.GetCustomerPointsHistory(ctx, customerID, 10)
+	data, err := p.walletQuery.LegacyPoints(ctx, id)
 	if err != nil {
-		return nil, fmt.Errorf("failed to get customer points history: %w", err)
+		return nil, fmt.Errorf("failed to get customer points: %w", err)
 	}
-
-	// Convert to response format
-	var historyItems []models.PointsHistoryItem
-
-	for _, point := range pointsHistory {
-		historyItems = append(historyItems, models.PointsHistoryItem{
-			ID:          point.ID.String(),
-			Points:      point.Balance,
-			Type:        "BALANCE",
-			Description: "Points balance",
-			CreatedAt:   point.CreatedAt,
-		})
-	}
-
-	var lastUpdated time.Time
-	if len(pointsHistory) > 0 {
-		lastUpdated = pointsHistory[0].CreatedAt
-	}
-
 	return &models.GetCustomerPointsResponse{
 		Status:  "SUCCESS",
 		Message: "Customer points retrieved successfully.",
-		Data: &models.GetCustomerPointsResponseData{
-			TotalPoints:   totalPoints,
-			PointsHistory: historyItems,
-			LastUpdated:   lastUpdated,
-		},
+		Data:    data,
 	}, nil
 }
 
 func (p *CustomerPointsProcessor) GetCustomerTotalTokensAPI(ctx context.Context, customerID string) (*models.GetCustomerTokensResponse, error) {
-	// Get total tokens
-	totalTokens, err := p.customerPointsRepo.GetCustomerTotalTokens(ctx, customerID)
+	id, err := parseWalletCustomerID(customerID)
 	if err != nil {
-		return nil, fmt.Errorf("failed to get customer total tokens: %w", err)
+		return nil, err
 	}
-
-	// Get tokens history (last 10 records)
-	tokensHistory, err := p.customerPointsRepo.GetCustomerTokensHistory(ctx, customerID, 10)
+	data, err := p.walletQuery.LegacyTokens(ctx, id)
 	if err != nil {
-		return nil, fmt.Errorf("failed to get customer tokens history: %w", err)
+		return nil, fmt.Errorf("failed to get customer tokens: %w", err)
 	}
-
-	// Convert to response format
-	var historyItems []models.TokensHistoryItem
-
-	for _, token := range tokensHistory {
-		historyItems = append(historyItems, models.TokensHistoryItem{
-			ID:          token.ID.String(),
-			Tokens:      token.Balance,
-			Type:        string(token.TokenType),
-			Description: "Tokens balance",
-			CreatedAt:   token.CreatedAt,
-		})
-	}
-
-	var lastUpdated time.Time
-	if len(tokensHistory) > 0 {
-		lastUpdated = tokensHistory[0].CreatedAt
-	}
-
 	return &models.GetCustomerTokensResponse{
 		Status:  "SUCCESS",
 		Message: "Customer tokens retrieved successfully.",
-		Data: &models.GetCustomerTokensResponseData{
-			TotalTokens:   totalTokens,
-			TokensHistory: historyItems,
-			LastUpdated:   lastUpdated,
-		},
+		Data:    data,
 	}, nil
 }
 
 func (p *CustomerPointsProcessor) GetCustomerWalletAPI(ctx context.Context, customerID string) (*models.GetCustomerWalletResponse, error) {
-	// Get total points
-	totalPoints, err := p.customerPointsRepo.GetCustomerTotalPoints(ctx, customerID)
+	id, err := parseWalletCustomerID(customerID)
 	if err != nil {
-		return nil, fmt.Errorf("failed to get customer total points: %w", err)
+		return nil, err
 	}
-
-	// Get total tokens
-	totalTokens, err := p.customerPointsRepo.GetCustomerTotalTokens(ctx, customerID)
+	data, err := p.walletQuery.Summary(ctx, id)
 	if err != nil {
-		return nil, fmt.Errorf("failed to get customer total tokens: %w", err)
+		return nil, fmt.Errorf("failed to get customer wallet: %w", err)
 	}
-
-	// Get points history (last 5 records)
-	pointsHistory, err := p.customerPointsRepo.GetCustomerPointsHistory(ctx, customerID, 5)
-	if err != nil {
-		return nil, fmt.Errorf("failed to get customer points history: %w", err)
-	}
-
-	// Get tokens history (last 5 records)
-	tokensHistory, err := p.customerPointsRepo.GetCustomerTokensHistory(ctx, customerID, 5)
-	if err != nil {
-		return nil, fmt.Errorf("failed to get customer tokens history: %w", err)
-	}
-
-	// Convert to response format
-	var pointsHistoryItems []models.PointsHistoryItem
-	var tokensHistoryItems []models.TokensHistoryItem
-	var lastUpdated time.Time
-
-	for _, point := range pointsHistory {
-		pointsHistoryItems = append(pointsHistoryItems, models.PointsHistoryItem{
-			ID:          point.ID.String(),
-			Points:      point.Balance,
-			Type:        "BALANCE",
-			Description: "Points balance",
-			CreatedAt:   point.CreatedAt,
-		})
-		if point.CreatedAt.After(lastUpdated) {
-			lastUpdated = point.CreatedAt
-		}
-	}
-
-	for _, token := range tokensHistory {
-		tokensHistoryItems = append(tokensHistoryItems, models.TokensHistoryItem{
-			ID:          token.ID.String(),
-			Tokens:      token.Balance,
-			Type:        string(token.TokenType),
-			Description: "Tokens balance",
-			CreatedAt:   token.CreatedAt,
-		})
-		if token.CreatedAt.After(lastUpdated) {
-			lastUpdated = token.CreatedAt
-		}
-	}
-
 	return &models.GetCustomerWalletResponse{
 		Status:  "SUCCESS",
 		Message: "Customer wallet retrieved successfully.",
-		Data: &models.GetCustomerWalletResponseData{
-			TotalPoints:   totalPoints,
-			TotalTokens:   totalTokens,
-			PointsHistory: pointsHistoryItems,
-			TokensHistory: tokensHistoryItems,
-			LastUpdated:   lastUpdated,
-		},
+		Data:    data,
 	}, nil
 }
 
+func (p *CustomerPointsProcessor) GetCustomerWalletTransactionsAPI(ctx context.Context, customerID string, query models.ListCustomerWalletTransactionsQuery) (*models.PaginatedResponse[models.CustomerWalletTransaction], error) {
+	id, err := parseWalletCustomerID(customerID)
+	if err != nil {
+		return nil, err
+	}
+	return p.walletQuery.Transactions(ctx, id, query)
+}
+
+func parseWalletCustomerID(customerID string) (uuid.UUID, error) {
+	id, err := uuid.Parse(customerID)
+	if err != nil {
+		return uuid.Nil, fmt.Errorf("%w: invalid customer id", ErrInvalidWalletQuery)
+	}
+	return id, nil
+}
+
 // GetCustomerGamesAPI gets active SPIN games for customers
 func (p *CustomerPointsProcessor) GetCustomerGamesAPI(ctx context.Context) (*models.GetCustomerGamesResponse, error) {
 	// Get active SPIN games

internal/processor/wallet_query_processor.go

@@ -0,0 +1,323 @@
+package processor
+
+import (
+	"context"
+	"errors"
+	"fmt"
+	"strconv"
+	"strings"
+	"time"
+
+	"github.com/google/uuid"
+
+	"apskel-pos-be/internal/constants"
+	"apskel-pos-be/internal/entities"
+	"apskel-pos-be/internal/models"
+	"apskel-pos-be/internal/repository"
+)
+
+// ErrInvalidWalletQuery wraps every rejection of a malformed history query, so the
+// handler can answer with a validation error rather than a server error.
+var ErrInvalidWalletQuery = errors.New("invalid wallet query")
+
+const (
+	walletRecentTransactions    = 5
+	walletLegacyHistorySize     = 10
+	walletTransactionsPageLimit = 20
+	walletTransactionsMaxLimit  = 100
+)
+
+// walletDisplayLocation is where the customer's calendar days start and end, for
+// date filters. Same zone as the database connection and the expiry grouping.
+var walletDisplayLocation = func() *time.Location {
+	loc, err := time.LoadLocation("Asia/Jakarta")
+	if err != nil {
+		return time.FixedZone("WIB", 7*60*60)
+	}
+	return loc
+}()
+
+// WalletQueryProcessor answers what the customer app shows about a wallet: balances,
+// history and upcoming expiry (docs/prd-point-coin.md F6). It only reads.
+type WalletQueryProcessor struct {
+	repo     repository.WalletQueryRepository
+	settings repository.OrganizationSettingRepository
+	now      func() time.Time
+}
+
+func NewWalletQueryProcessor(repo repository.WalletQueryRepository, settings repository.OrganizationSettingRepository) *WalletQueryProcessor {
+	return &WalletQueryProcessor{repo: repo, settings: settings, now: time.Now}
+}
+
+// Summary is GET /customer/wallet. A customer who has never had a wallet gets zeros.
+func (p *WalletQueryProcessor) Summary(ctx context.Context, customerID uuid.UUID) (*models.GetCustomerWalletResponseData, error) {
+	organizationID, err := p.repo.GetCustomerOrganizationID(ctx, customerID)
+	if err != nil {
+		return nil, err
+	}
+	now := p.now()
+
+	balances, err := p.repo.SpendableBalances(ctx, customerID, now)
+	if err != nil {
+		return nil, err
+	}
+	pointValue, err := p.pointValue(ctx, organizationID)
+	if err != nil {
+		return nil, err
+	}
+	expiring, err := p.repo.NearestExpiring(ctx, customerID, now)
+	if err != nil {
+		return nil, err
+	}
+	recent, err := p.recent(ctx, customerID, "", walletRecentTransactions)
+	if err != nil {
+		return nil, err
+	}
+	points, err := p.legacyPoints(ctx, customerID, balances)
+	if err != nil {
+		return nil, err
+	}
+	tokens, err := p.legacyTokens(ctx, customerID, balances)
+	if err != nil {
+		return nil, err
+	}
+
+	data := &models.GetCustomerWalletResponseData{
+		PointBalance:       balances[constants.WalletCurrencyPoint],
+		CoinBalance:        balances[constants.WalletCurrencyCoin],
+		PointValue:         pointValue,
+		PointDiscountValue: balances[constants.WalletCurrencyPoint] * pointValue,
+		RecentTransactions: recent,
+		TotalPoints:        points.TotalPoints,
+		TotalTokens:        tokens.TotalTokens,
+		PointsHistory:      points.PointsHistory,
+		TokensHistory:      tokens.TokensHistory,
+		LastUpdated:        points.LastUpdated,
+	}
+	if tokens.LastUpdated.After(data.LastUpdated) {
+		data.LastUpdated = tokens.LastUpdated
+	}
+	for _, e := range expiring {
+		entry := &models.CustomerWalletExpiring{Amount: e.Amount, Date: e.Date}
+		switch e.Currency {
+		case constants.WalletCurrencyPoint:
+			data.NearestExpiring.Point = entry
+		case constants.WalletCurrencyCoin:
+			data.NearestExpiring.Coin = entry
+		}
+	}
+	return data, nil
+}
+
+// Transactions is GET /customer/wallet/transactions.
+func (p *WalletQueryProcessor) Transactions(ctx context.Context, customerID uuid.UUID, query models.ListCustomerWalletTransactionsQuery) (*models.PaginatedResponse[models.CustomerWalletTransaction], error) {
+	filter, page, err := walletTransactionFilter(customerID, query)
+	if err != nil {
+		return nil, err
+	}
+	rows, total, err := p.repo.ListTransactions(ctx, filter)
+	if err != nil {
+		return nil, err
+	}
+	items, err := p.toTransactions(ctx, rows)
+	if err != nil {
+		return nil, err
+	}
+	totalPages := int((total + int64(filter.Limit) - 1) / int64(filter.Limit))
+	return &models.PaginatedResponse[models.CustomerWalletTransaction]{
+		Data:       items,
+		Pagination: models.Pagination{Page: page, Limit: filter.Limit, Total: total, TotalPages: totalPages},
+	}, nil
+}
+
+// LegacyPoints is the pre-wallet GET /customer/points, now read from the wallet.
+func (p *WalletQueryProcessor) LegacyPoints(ctx context.Context, customerID uuid.UUID) (*models.GetCustomerPointsResponseData, error) {
+	balances, err := p.repo.SpendableBalances(ctx, customerID, p.now())
+	if err != nil {
+		return nil, err
+	}
+	return p.legacyPoints(ctx, customerID, balances)
+}
+
+func (p *WalletQueryProcessor) legacyPoints(ctx context.Context, customerID uuid.UUID, balances map[string]int64) (*models.GetCustomerPointsResponseData, error) {
+	recent, err := p.recent(ctx, customerID, constants.WalletCurrencyPoint, walletLegacyHistorySize)
+	if err != nil {
+		return nil, err
+	}
+	data := &models.GetCustomerPointsResponseData{TotalPoints: balances[constants.WalletCurrencyPoint]}
+	for _, tx := range recent {
+		data.PointsHistory = append(data.PointsHistory, models.PointsHistoryItem{
+			ID: tx.ID.String(), Points: tx.Amount, Type: tx.Type, Description: tx.Description, CreatedAt: tx.CreatedAt,
+		})
+	}
+	if len(recent) > 0 {
+		data.LastUpdated = recent[0].CreatedAt
+	}
+	return data, nil
+}
+
+// LegacyTokens is the pre-wallet GET /customer/tokens. Tokens are EnakCoin now.
+func (p *WalletQueryProcessor) LegacyTokens(ctx context.Context, customerID uuid.UUID) (*models.GetCustomerTokensResponseData, error) {
+	balances, err := p.repo.SpendableBalances(ctx, customerID, p.now())
+	if err != nil {
+		return nil, err
+	}
+	return p.legacyTokens(ctx, customerID, balances)
+}
+
+func (p *WalletQueryProcessor) legacyTokens(ctx context.Context, customerID uuid.UUID, balances map[string]int64) (*models.GetCustomerTokensResponseData, error) {
+	recent, err := p.recent(ctx, customerID, constants.WalletCurrencyCoin, walletLegacyHistorySize)
+	if err != nil {
+		return nil, err
+	}
+	data := &models.GetCustomerTokensResponseData{TotalTokens: balances[constants.WalletCurrencyCoin]}
+	for _, tx := range recent {
+		data.TokensHistory = append(data.TokensHistory, models.TokensHistoryItem{
+			ID: tx.ID.String(), Tokens: tx.Amount, Type: tx.Type, Description: tx.Description, CreatedAt: tx.CreatedAt,
+		})
+	}
+	if len(recent) > 0 {
+		data.LastUpdated = recent[0].CreatedAt
+	}
+	return data, nil
+}
+
+func (p *WalletQueryProcessor) recent(ctx context.Context, customerID uuid.UUID, currency string, limit int) ([]models.CustomerWalletTransaction, error) {
+	rows, _, err := p.repo.ListTransactions(ctx, repository.WalletTransactionFilter{
+		CustomerID: customerID, Currency: currency, Limit: limit,
+	})
+	if err != nil {
+		return nil, err
+	}
+	return p.toTransactions(ctx, rows)
+}
+
+// pointValue reads the organization's rupiah value of one EnakPoint. A missing or
+// unusable value falls back to the default rather than failing the whole screen.
+func (p *WalletQueryProcessor) pointValue(ctx context.Context, organizationID uuid.UUID) (int64, error) {
+	raw, ok, err := p.settings.Get(ctx, organizationID, constants.LoyaltyPointValueKey)
+	if err != nil {
+		return 0, err
+	}
+	if !ok {
+		return constants.LoyaltyPointValueDefault, nil
+	}
+	value, err := strconv.ParseInt(strings.TrimSpace(raw), 10, 64)
+	if err != nil || value < 1 {
+		return constants.LoyaltyPointValueDefault, nil
+	}
+	return value, nil
+}
+
+func (p *WalletQueryProcessor) toTransactions(ctx context.Context, rows []entities.WalletTransaction) ([]models.CustomerWalletTransaction, error) {
+	var credits []uuid.UUID
+	for _, row := range rows {
+		if row.Amount > 0 {
+			credits = append(credits, row.ID)
+		}
+	}
+	lots, err := p.repo.ListLotsBySourceTransactions(ctx, credits)
+	if err != nil {
+		return nil, err
+	}
+	lotsByTx := make(map[uuid.UUID][]entities.WalletLot, len(credits))
+	for _, lot := range lots {
+		lotsByTx[lot.SourceTransactionID] = append(lotsByTx[lot.SourceTransactionID], lot)
+	}
+
+	items := make([]models.CustomerWalletTransaction, 0, len(rows))
+	for _, row := range rows {
+		ref := &models.CustomerWalletTransactionRef{Type: row.ReferenceType, ID: row.ReferenceID}
+		item := models.CustomerWalletTransaction{
+			ID:                    row.ID,
+			Currency:              row.Currency,
+			Type:                  row.Type,
+			Amount:                row.Amount,
+			BalanceAfter:          row.BalanceAfter,
+			Description:           row.Description,
+			OutletID:              row.OutletID,
+			ReversesTransactionID: row.ReversesTransactionID,
+			GroupID:               row.GroupID,
+			CreatedAt:             row.CreatedAt,
+		}
+		// The counterparty's id, the admin and the metadata are left out on purpose:
+		// the customer sees the masked name in the description (§8.1).
+		if row.Amount > 0 {
+			item.Source = ref
+			for _, lot := range lotsByTx[row.ID] {
+				item.Lots = append(item.Lots, models.CustomerWalletLot{
+					Amount: lot.OriginalAmount, Remaining: lot.RemainingAmount, ExpiresAt: lot.ExpiresAt,
+				})
+				if lot.ExpiresAt != nil && (item.ExpiresAt == nil || lot.ExpiresAt.Before(*item.ExpiresAt)) {
+					item.ExpiresAt = lot.ExpiresAt
+				}
+			}
+		} else {
+			item.Destination = ref
+		}
+		items = append(items, item)
+	}
+	return items, nil
+}
+
+func walletTransactionFilter(customerID uuid.UUID, q models.ListCustomerWalletTransactionsQuery) (repository.WalletTransactionFilter, int, error) {
+	invalid := func(format string, args ...any) error {
+		return fmt.Errorf("%w: %s", ErrInvalidWalletQuery, fmt.Sprintf(format, args...))
+	}
+	filter := repository.WalletTransactionFilter{CustomerID: customerID}
+
+	page := q.Page
+	if page == 0 {
+		page = 1
+	}
+	if page < 1 {
+		return filter, 0, invalid("page must be at least 1")
+	}
+	filter.Limit = q.Limit
+	if filter.Limit == 0 {
+		filter.Limit = walletTransactionsPageLimit
+	}
+	if filter.Limit < 1 || filter.Limit > walletTransactionsMaxLimit {
+		return filter, 0, invalid("limit must be between 1 and %d", walletTransactionsMaxLimit)
+	}
+	filter.Offset = (page - 1) * filter.Limit
+
+	if q.Currency != "" {
+		currency := strings.ToUpper(q.Currency)
+		if !constants.IsValidWalletCurrency(currency) {
+			return filter, 0, invalid("currency must be POINT or COIN")
+		}
+		filter.Currency = currency
+	}
+	for _, t := range strings.Split(q.Type, ",") {
+		t = strings.ToUpper(strings.TrimSpace(t))
+		if t == "" {
+			continue
+		}
+		if _, ok := walletTypeRules[t]; !ok {
+			return filter, 0, invalid("unknown type %q", t)
+		}
+		filter.Types = append(filter.Types, t)
+	}
+
+	if q.From != "" {
+		from, err := time.ParseInLocation("2006-01-02", q.From, walletDisplayLocation)
+		if err != nil {
+			return filter, 0, invalid("from must be a date like 2026-01-31")
+		}
+		filter.From = &from
+	}
+	if q.To != "" {
+		to, err := time.ParseInLocation("2006-01-02", q.To, walletDisplayLocation)
+		if err != nil {
+			return filter, 0, invalid("to must be a date like 2026-01-31")
+		}
+		// To is inclusive for the customer, exclusive in the query.
+		end := to.AddDate(0, 0, 1)
+		filter.To = &end
+	}
+	if filter.From != nil && filter.To != nil && !filter.From.Before(*filter.To) {
+		return filter, 0, invalid("from must not be after to")
+	}
+	return filter, page, nil
+}

internal/processor/wallet_query_processor_test.go

@@ -0,0 +1,246 @@
+package processor
+
+import (
+	"context"
+	"testing"
+	"time"
+
+	"github.com/google/uuid"
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+
+	"apskel-pos-be/internal/constants"
+	"apskel-pos-be/internal/entities"
+	"apskel-pos-be/internal/models"
+	"apskel-pos-be/internal/repository"
+)
+
+type walletQueryRepoFake struct {
+	org          uuid.UUID
+	spendable    map[string]int64
+	expiring     []repository.WalletExpiringAmount
+	transactions []entities.WalletTransaction
+	total        int64
+	lots         []entities.WalletLot
+	filters      []repository.WalletTransactionFilter
+}
+
+func (f *walletQueryRepoFake) GetCustomerOrganizationID(context.Context, uuid.UUID) (uuid.UUID, error) {
+	if f.org == uuid.Nil {
+		return uuid.Nil, repository.ErrWalletNotFound
+	}
+	return f.org, nil
+}
+
+func (f *walletQueryRepoFake) SpendableBalances(context.Context, uuid.UUID, time.Time) (map[string]int64, error) {
+	return f.spendable, nil
+}
+
+func (f *walletQueryRepoFake) NearestExpiring(context.Context, uuid.UUID, time.Time) ([]repository.WalletExpiringAmount, error) {
+	return f.expiring, nil
+}
+
+func (f *walletQueryRepoFake) ListTransactions(_ context.Context, filter repository.WalletTransactionFilter) ([]entities.WalletTransaction, int64, error) {
+	f.filters = append(f.filters, filter)
+	var out []entities.WalletTransaction
+	for _, tx := range f.transactions {
+		if filter.Currency == "" || tx.Currency == filter.Currency {
+			out = append(out, tx)
+		}
+	}
+	if len(out) > filter.Limit {
+		out = out[:filter.Limit]
+	}
+	return out, f.total, nil
+}
+
+func (f *walletQueryRepoFake) ListLotsBySourceTransactions(_ context.Context, ids []uuid.UUID) ([]entities.WalletLot, error) {
+	var out []entities.WalletLot
+	for _, lot := range f.lots {
+		for _, id := range ids {
+			if lot.SourceTransactionID == id {
+				out = append(out, lot)
+			}
+		}
+	}
+	return out, nil
+}
+
+type orgSettingsFake map[string]string
+
+func (f orgSettingsFake) Get(_ context.Context, _ uuid.UUID, key string) (string, bool, error) {
+	v, ok := f[key]
+	return v, ok, nil
+}
+
+func newWalletQueryTest(repo *walletQueryRepoFake, settings orgSettingsFake) *WalletQueryProcessor {
+	p := NewWalletQueryProcessor(repo, settings)
+	p.now = func() time.Time { return time.Date(2026, 6, 1, 12, 0, 0, 0, time.UTC) }
+	return p
+}
+
+func TestWalletQueryProcessor_SummaryShowsWhereEachRowCameFromOrWent(t *testing.T) {
+	order, payment := uuid.New(), uuid.New()
+	earnID, payID := uuid.New(), uuid.New()
+	soon := time.Date(2026, 7, 1, 0, 0, 0, 0, time.UTC)
+	later := time.Date(2026, 9, 1, 0, 0, 0, 0, time.UTC)
+	created := time.Date(2026, 5, 1, 0, 0, 0, 0, time.UTC)
+	repo := &walletQueryRepoFake{
+		org:       uuid.New(),
+		spendable: map[string]int64{constants.WalletCurrencyPoint: 250, constants.WalletCurrencyCoin: 8},
+		expiring: []repository.WalletExpiringAmount{
+			{Currency: constants.WalletCurrencyPoint, Date: "2026-07-01", Amount: 100},
+		},
+		transactions: []entities.WalletTransaction{
+			{ID: payID, Currency: constants.WalletCurrencyPoint, Type: constants.WalletTxTypePayment, Amount: -50, BalanceAfter: 250,
+				ReferenceType: constants.WalletRefTypePayment, ReferenceID: payment, Description: "Bayar #ORD-1", CreatedAt: created.Add(time.Hour),
+				CounterpartyCustomerID: ptr(uuid.New()), Metadata: entities.Metadata{"point_value": 100}},
+			{ID: earnID, Currency: constants.WalletCurrencyPoint, Type: constants.WalletTxTypeEarn, Amount: 300, BalanceAfter: 300,
+				ReferenceType: constants.WalletRefTypeOrder, ReferenceID: order, Description: "Belanja #ORD-1", CreatedAt: created},
+		},
+		lots: []entities.WalletLot{
+			{SourceTransactionID: earnID, OriginalAmount: 200, RemainingAmount: 150, ExpiresAt: &later},
+			{SourceTransactionID: earnID, OriginalAmount: 100, RemainingAmount: 100, ExpiresAt: &soon},
+		},
+	}
+	p := newWalletQueryTest(repo, orgSettingsFake{constants.LoyaltyPointValueKey: "100"})
+
+	data, err := p.Summary(context.Background(), uuid.New())
+	require.NoError(t, err)
+
+	assert.Equal(t, int64(250), data.PointBalance)
+	assert.Equal(t, int64(8), data.CoinBalance)
+	assert.Equal(t, int64(100), data.PointValue)
+	assert.Equal(t, int64(25000), data.PointDiscountValue)
+	assert.Equal(t, &models.CustomerWalletExpiring{Amount: 100, Date: "2026-07-01"}, data.NearestExpiring.Point)
+	assert.Nil(t, data.NearestExpiring.Coin)
+
+	require.Len(t, data.RecentTransactions, 2)
+	pay, earn := data.RecentTransactions[0], data.RecentTransactions[1]
+	assert.Equal(t, &models.CustomerWalletTransactionRef{Type: constants.WalletRefTypePayment, ID: payment}, pay.Destination)
+	assert.Nil(t, pay.Source)
+	assert.Empty(t, pay.Lots)
+	assert.Equal(t, &models.CustomerWalletTransactionRef{Type: constants.WalletRefTypeOrder, ID: order}, earn.Source)
+	assert.Nil(t, earn.Destination)
+	assert.Equal(t, &soon, earn.ExpiresAt, "earliest expiry among the lots the credit created")
+	assert.Len(t, earn.Lots, 2)
+
+	// The pre-wallet fields are still filled, from the wallet.
+	assert.Equal(t, int64(250), data.TotalPoints)
+	assert.Equal(t, int64(8), data.TotalTokens)
+	require.Len(t, data.PointsHistory, 2)
+	assert.Equal(t, int64(-50), data.PointsHistory[0].Points)
+	assert.Equal(t, constants.WalletTxTypePayment, data.PointsHistory[0].Type)
+	assert.Equal(t, created.Add(time.Hour), data.LastUpdated)
+}
+
+func TestWalletQueryProcessor_PointValueFallsBackToDefault(t *testing.T) {
+	for name, settings := range map[string]orgSettingsFake{
+		"not set":  {},
+		"garbage":  {constants.LoyaltyPointValueKey: "abc"},
+		"zero":     {constants.LoyaltyPointValueKey: "0"},
+		"negative": {constants.LoyaltyPointValueKey: "-5"},
+	} {
+		t.Run(name, func(t *testing.T) {
+			repo := &walletQueryRepoFake{org: uuid.New(), spendable: map[string]int64{constants.WalletCurrencyPoint: 40}}
+			data, err := newWalletQueryTest(repo, settings).Summary(context.Background(), uuid.New())
+			require.NoError(t, err)
+			assert.Equal(t, constants.LoyaltyPointValueDefault, data.PointValue)
+			assert.Equal(t, int64(40), data.PointDiscountValue)
+		})
+	}
+}
+
+func TestWalletQueryProcessor_SummaryForCustomerWithoutWallet(t *testing.T) {
+	repo := &walletQueryRepoFake{org: uuid.New(), spendable: map[string]int64{}}
+	data, err := newWalletQueryTest(repo, orgSettingsFake{}).Summary(context.Background(), uuid.New())
+	require.NoError(t, err)
+	assert.Zero(t, data.PointBalance)
+	assert.Zero(t, data.CoinBalance)
+	assert.NotNil(t, data.RecentTransactions, "an empty list, not null, for the app")
+
+	_, err = newWalletQueryTest(&walletQueryRepoFake{}, orgSettingsFake{}).Summary(context.Background(), uuid.New())
+	assert.ErrorIs(t, err, repository.ErrWalletNotFound)
+}
+
+func TestWalletQueryProcessor_LegacyEndpointsSplitByCurrency(t *testing.T) {
+	repo := &walletQueryRepoFake{
+		org:       uuid.New(),
+		spendable: map[string]int64{constants.WalletCurrencyPoint: 100, constants.WalletCurrencyCoin: 8},
+		transactions: []entities.WalletTransaction{
+			{ID: uuid.New(), Currency: constants.WalletCurrencyCoin, Type: constants.WalletTxTypeMigration, Amount: 8},
+			{ID: uuid.New(), Currency: constants.WalletCurrencyPoint, Type: constants.WalletTxTypeMigration, Amount: 100},
+		},
+	}
+	p := newWalletQueryTest(repo, orgSettingsFake{})
+
+	points, err := p.LegacyPoints(context.Background(), uuid.New())
+	require.NoError(t, err)
+	assert.Equal(t, int64(100), points.TotalPoints)
+	require.Len(t, points.PointsHistory, 1)
+	assert.Equal(t, int64(100), points.PointsHistory[0].Points)
+
+	tokens, err := p.LegacyTokens(context.Background(), uuid.New())
+	require.NoError(t, err)
+	assert.Equal(t, int64(8), tokens.TotalTokens)
+	require.Len(t, tokens.TokensHistory, 1)
+	assert.Equal(t, int64(8), tokens.TokensHistory[0].Tokens)
+}
+
+func TestWalletQueryProcessor_TransactionsQuery(t *testing.T) {
+	customer := uuid.New()
+	jakarta := walletDisplayLocation
+
+	repo := &walletQueryRepoFake{org: uuid.New(), total: 45}
+	page, err := newWalletQueryTest(repo, orgSettingsFake{}).Transactions(context.Background(), customer, models.ListCustomerWalletTransactionsQuery{
+		Page: 3, Limit: 10, Currency: "point", Type: "earn, PAYMENT", From: "2026-05-01", To: "2026-05-31",
+	})
+	require.NoError(t, err)
+	assert.Equal(t, models.Pagination{Page: 3, Limit: 10, Total: 45, TotalPages: 5}, page.Pagination)
+	assert.NotNil(t, page.Data)
+
+	f := repo.filters[0]
+	assert.Equal(t, customer, f.CustomerID)
+	assert.Equal(t, 20, f.Offset)
+	assert.Equal(t, 10, f.Limit)
+	assert.Equal(t, constants.WalletCurrencyPoint, f.Currency)
+	assert.Equal(t, []string{constants.WalletTxTypeEarn, constants.WalletTxTypePayment}, f.Types)
+	assert.True(t, f.From.Equal(time.Date(2026, 5, 1, 0, 0, 0, 0, jakarta)))
+	assert.True(t, f.To.Equal(time.Date(2026, 6, 1, 0, 0, 0, 0, jakarta)), "to covers the whole last day")
+
+	// Defaults.
+	repo = &walletQueryRepoFake{org: uuid.New()}
+	page, err = newWalletQueryTest(repo, orgSettingsFake{}).Transactions(context.Background(), customer, models.ListCustomerWalletTransactionsQuery{})
+	require.NoError(t, err)
+	assert.Equal(t, 1, page.Pagination.Page)
+	assert.Equal(t, walletTransactionsPageLimit, repo.filters[0].Limit)
+	assert.Zero(t, repo.filters[0].Offset)
+	assert.Nil(t, repo.filters[0].From)
+	assert.Empty(t, repo.filters[0].Types)
+}
+
+func TestWalletQueryProcessor_RejectsBadQueries(t *testing.T) {
+	for name, q := range map[string]models.ListCustomerWalletTransactionsQuery{
+		"negative page":    {Page: -1},
+		"limit too big":    {Limit: walletTransactionsMaxLimit + 1},
+		"negative limit":   {Limit: -1},
+		"unknown currency": {Currency: "GOLD"},
+		"unknown type":     {Type: "EARN,BONUS"},
+		"bad from":         {From: "01-05-2026"},
+		"bad to":           {To: "2026-13-01"},
+		"from after to":    {From: "2026-06-02", To: "2026-06-01"},
+	} {
+		t.Run(name, func(t *testing.T) {
+			repo := &walletQueryRepoFake{org: uuid.New()}
+			_, err := newWalletQueryTest(repo, orgSettingsFake{}).Transactions(context.Background(), uuid.New(), q)
+			assert.ErrorIs(t, err, ErrInvalidWalletQuery)
+			assert.Empty(t, repo.filters, "nothing is queried")
+		})
+	}
+
+	// A single day is a valid range.
+	repo := &walletQueryRepoFake{org: uuid.New()}
+	_, err := newWalletQueryTest(repo, orgSettingsFake{}).Transactions(context.Background(), uuid.New(),
+		models.ListCustomerWalletTransactionsQuery{From: "2026-06-01", To: "2026-06-01"})
+	assert.NoError(t, err)
+}

internal/repository/organization_setting_repository.go

@@ -0,0 +1,41 @@
+package repository
+
+import (
+	"context"
+	"fmt"
+
+	"github.com/google/uuid"
+	"gorm.io/gorm"
+)
+
+// OrganizationSettingRepository reads organization_settings, the key-value settings
+// that apply to every outlet of an organization (docs/prd-point-coin.md F2).
+type OrganizationSettingRepository interface {
+	// Get returns the stored value of a key and whether one is stored. A key that has
+	// never been set is not an error: the caller falls back to the key's default.
+	Get(ctx context.Context, organizationID uuid.UUID, key string) (string, bool, error)
+}
+
+type organizationSettingRepository struct {
+	db *gorm.DB
+}
+
+func NewOrganizationSettingRepository(db *gorm.DB) OrganizationSettingRepository {
+	return &organizationSettingRepository{db: db}
+}
+
+func (r *organizationSettingRepository) Get(ctx context.Context, organizationID uuid.UUID, key string) (string, bool, error) {
+	var values []*string
+	err := DBFromContext(ctx, r.db).WithContext(ctx).
+		Table("organization_settings").
+		Where("organization_id = ? AND key = ?", organizationID, key).
+		Limit(1).
+		Pluck("value", &values).Error
+	if err != nil {
+		return "", false, fmt.Errorf("failed to get organization setting %s: %w", key, err)
+	}
+	if len(values) == 0 || values[0] == nil {
+		return "", false, nil
+	}
+	return *values[0], true, nil
+}

internal/repository/wallet_query_repository.go

@@ -0,0 +1,170 @@
+package repository
+
+import (
+	"context"
+	"fmt"
+	"time"
+
+	"github.com/google/uuid"
+	"gorm.io/gorm"
+
+	"apskel-pos-be/internal/entities"
+)
+
+// walletDisplayTimeZone is the zone expiry dates are grouped in for display, the same
+// one the database connection uses (config.Database.DSN).
+const walletDisplayTimeZone = "Asia/Jakarta"
+
+// WalletTransactionFilter narrows a customer's ledger. Zero values mean no filter.
+type WalletTransactionFilter struct {
+	CustomerID uuid.UUID
+	Currency   string
+	Types      []string
+	// From is inclusive and To is exclusive.
+	From   *time.Time
+	To     *time.Time
+	Offset int
+	Limit  int
+}
+
+// WalletExpiringAmount is how much of one currency expires on one day.
+type WalletExpiringAmount struct {
+	Currency string
+	// A calendar date in walletDisplayTimeZone, formatted YYYY-MM-DD.
+	Date   string
+	Amount int64
+}
+
+// WalletQueryRepository serves the read side of the wallet: balances, history and
+// upcoming expiry for display. Nothing here changes a balance.
+type WalletQueryRepository interface {
+	// GetCustomerOrganizationID returns ErrWalletNotFound when the customer does not exist.
+	GetCustomerOrganizationID(ctx context.Context, customerID uuid.UUID) (uuid.UUID, error)
+	// SpendableBalances sums, per currency, the lots that still have balance and have
+	// not expired at asOf. It differs from the wallet balance only for lots that have
+	// expired but that the expiry job has not processed yet.
+	SpendableBalances(ctx context.Context, customerID uuid.UUID, asOf time.Time) (map[string]int64, error)
+	// NearestExpiring returns, per currency, the earliest day after asOf on which some
+	// balance expires, and how much expires that day.
+	NearestExpiring(ctx context.Context, customerID uuid.UUID, asOf time.Time) ([]WalletExpiringAmount, error)
+	// ListTransactions returns a page of the ledger, newest first, and the total count.
+	ListTransactions(ctx context.Context, filter WalletTransactionFilter) ([]entities.WalletTransaction, int64, error)
+	// ListLotsBySourceTransactions returns the lots created by the given credits.
+	ListLotsBySourceTransactions(ctx context.Context, transactionIDs []uuid.UUID) ([]entities.WalletLot, error)
+}
+
+type walletQueryRepository struct {
+	db *gorm.DB
+}
+
+func NewWalletQueryRepository(db *gorm.DB) WalletQueryRepository {
+	return &walletQueryRepository{db: db}
+}
+
+func (r *walletQueryRepository) GetCustomerOrganizationID(ctx context.Context, customerID uuid.UUID) (uuid.UUID, error) {
+	var ids []string
+	err := DBFromContext(ctx, r.db).WithContext(ctx).
+		Table("customers").
+		Where("id = ?", customerID).
+		Limit(1).
+		Pluck("organization_id::text", &ids).Error
+	if err != nil {
+		return uuid.Nil, fmt.Errorf("failed to get customer organization: %w", err)
+	}
+	if len(ids) == 0 {
+		return uuid.Nil, ErrWalletNotFound
+	}
+	return uuid.Parse(ids[0])
+}
+
+func (r *walletQueryRepository) SpendableBalances(ctx context.Context, customerID uuid.UUID, asOf time.Time) (map[string]int64, error) {
+	var rows []struct {
+		Currency string
+		Amount   int64
+	}
+	err := DBFromContext(ctx, r.db).WithContext(ctx).
+		Model(&entities.WalletLot{}).
+		Select("currency, SUM(remaining_amount) AS amount").
+		Where("customer_id = ? AND remaining_amount > 0", customerID).
+		Where("(expires_at IS NULL OR expires_at > ?)", asOf).
+		Group("currency").
+		Scan(&rows).Error
+	if err != nil {
+		return nil, fmt.Errorf("failed to sum spendable wallet balance: %w", err)
+	}
+	balances := make(map[string]int64, len(rows))
+	for _, row := range rows {
+		balances[row.Currency] = row.Amount
+	}
+	return balances, nil
+}
+
+func (r *walletQueryRepository) NearestExpiring(ctx context.Context, customerID uuid.UUID, asOf time.Time) ([]WalletExpiringAmount, error) {
+	var rows []WalletExpiringAmount
+	err := DBFromContext(ctx, r.db).WithContext(ctx).Raw(`
+		WITH by_day AS (
+			SELECT currency,
+				(expires_at AT TIME ZONE ?)::date AS day,
+				SUM(remaining_amount) AS amount
+			FROM wallet_lots
+			WHERE customer_id = ? AND remaining_amount > 0 AND expires_at > ?
+			GROUP BY currency, day
+		)
+		SELECT DISTINCT ON (currency) currency, to_char(day, 'YYYY-MM-DD') AS date, amount
+		FROM by_day
+		ORDER BY currency, day`, walletDisplayTimeZone, customerID, asOf).
+		Scan(&rows).Error
+	if err != nil {
+		return nil, fmt.Errorf("failed to get nearest expiring wallet balance: %w", err)
+	}
+	return rows, nil
+}
+
+func (r *walletQueryRepository) ListTransactions(ctx context.Context, filter WalletTransactionFilter) ([]entities.WalletTransaction, int64, error) {
+	query := DBFromContext(ctx, r.db).WithContext(ctx).
+		Model(&entities.WalletTransaction{}).
+		Where("customer_id = ?", filter.CustomerID)
+	if filter.Currency != "" {
+		query = query.Where("currency = ?", filter.Currency)
+	}
+	if len(filter.Types) > 0 {
+		query = query.Where("type IN ?", filter.Types)
+	}
+	if filter.From != nil {
+		query = query.Where("created_at >= ?", *filter.From)
+	}
+	if filter.To != nil {
+		query = query.Where("created_at < ?", *filter.To)
+	}
+
+	var total int64
+	if err := query.Count(&total).Error; err != nil {
+		return nil, 0, fmt.Errorf("failed to count wallet transactions: %w", err)
+	}
+
+	var transactions []entities.WalletTransaction
+	err := query.
+		Order("created_at DESC, id DESC").
+		Offset(filter.Offset).
+		Limit(filter.Limit).
+		Find(&transactions).Error
+	if err != nil {
+		return nil, 0, fmt.Errorf("failed to list wallet transactions: %w", err)
+	}
+	return transactions, total, nil
+}
+
+func (r *walletQueryRepository) ListLotsBySourceTransactions(ctx context.Context, transactionIDs []uuid.UUID) ([]entities.WalletLot, error) {
+	var lots []entities.WalletLot
+	if len(transactionIDs) == 0 {
+		return lots, nil
+	}
+	err := DBFromContext(ctx, r.db).WithContext(ctx).
+		Where("source_transaction_id IN ?", transactionIDs).
+		Order("expires_at NULLS LAST, created_at, id").
+		Find(&lots).Error
+	if err != nil {
+		return nil, fmt.Errorf("failed to list wallet lots: %w", err)
+	}
+	return lots, nil
+}

internal/router/router.go

@@ -157,6 +157,7 @@ func (r *Router) addAppRoutes(rg *gin.Engine) {
 			customer.GET("/points", r.customerPointsHandler.GetCustomerPoints)
 			customer.GET("/tokens", r.customerPointsHandler.GetCustomerTokens)
 			customer.GET("/wallet", r.customerPointsHandler.GetCustomerWallet)
+			customer.GET("/wallet/transactions", r.customerPointsHandler.GetCustomerWalletTransactions)
 			customer.GET("/games", r.customerPointsHandler.GetCustomerGames)
 			customer.GET("/ferris-wheel", r.customerPointsHandler.GetFerrisWheelGame)
 			customer.POST("/spin", r.spinGameHandler.PlaySpinGame)

internal/service/customer_points_service.go

@@ -12,6 +12,7 @@ type CustomerPointsService interface {
 	GetCustomerPoints(ctx context.Context, customerID string) (*models.GetCustomerPointsResponse, error)
 	GetCustomerTokens(ctx context.Context, customerID string) (*models.GetCustomerTokensResponse, error)
 	GetCustomerWallet(ctx context.Context, customerID string) (*models.GetCustomerWalletResponse, error)
+	GetCustomerWalletTransactions(ctx context.Context, customerID string, query models.ListCustomerWalletTransactionsQuery) (*models.PaginatedResponse[models.CustomerWalletTransaction], error)
 	GetCustomerGames(ctx context.Context) (*models.GetCustomerGamesResponse, error)
 	GetFerrisWheelGame(ctx context.Context) (*models.GetFerrisWheelGameResponse, error)
 }
@@ -82,3 +83,10 @@ func (s *customerPointsService) GetFerrisWheelGame(ctx context.Context) (*models
 
 	return response, nil
 }
+
+func (s *customerPointsService) GetCustomerWalletTransactions(ctx context.Context, customerID string, query models.ListCustomerWalletTransactionsQuery) (*models.PaginatedResponse[models.CustomerWalletTransaction], error) {
+	if customerID == "" {
+		return nil, fmt.Errorf("customer ID is required")
+	}
+	return s.customerPointsProcessor.GetCustomerWalletTransactionsAPI(ctx, customerID, query)
+}