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feat(payment): balance recharge multiplier and refund amount separation

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- Add balance_recharge_multiplier system setting (e.g. 1.2 = charge 100 get 120)
- Separate order_amount (credited balance) from pay_amount (actual payment)
- Refund calculates gateway amount proportionally from pay_amount
- Frontend shows both amounts in order details, payment status, refund dialog
- Admin settings UI for configuring recharge multiplier
This commit is contained in:
erio
2026-04-15 00:14:57 +08:00
parent 7c671b5373
commit 60a4b9316b
24 changed files with 246 additions and 101 deletions
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7
backend/internal/handler/dto/settings.go
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@@ -134,9 +134,10 @@ type SystemSettings struct {
PaymentDailyLimit float64 `json:"payment_daily_limit"`
PaymentOrderTimeoutMin int `json:"payment_order_timeout_minutes"`
PaymentMaxPendingOrders int `json:"payment_max_pending_orders"`
PaymentEnabledTypes []string `json:"payment_enabled_types"`
PaymentBalanceDisabled bool `json:"payment_balance_disabled"`
PaymentLoadBalanceStrat string `json:"payment_load_balance_strategy"`
PaymentEnabledTypes []string `json:"payment_enabled_types"`
PaymentBalanceDisabled bool `json:"payment_balance_disabled"`
PaymentBalanceRechargeMultiplier float64 `json:"payment_balance_recharge_multiplier"`
PaymentLoadBalanceStrat string `json:"payment_load_balance_strategy"`
PaymentProductNamePrefix string `json:"payment_product_name_prefix"`
PaymentProductNameSuffix string `json:"payment_product_name_suffix"`
PaymentHelpImageURL string `json:"payment_help_image_url"`