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"`
}