sundynix-agentix/sundynix-gateway/internal/handler/billing_pay.go

package handler

import (
	"net/http"
	"strings"

	"github.com/gin-gonic/gin"
	"github.com/sundynix/sundynix-gateway/internal/store"
)

// 充值（P5.1：兑换码渠道；设计见 PAYMENT_DESIGN.md）。
// 入账目标一律是「计费租户」（ResolveBillingTenantID）——和消耗记账同一本账，
// 谁的池子扣钱就往谁的池子充，别让用户充进一个花不到的池。

// BillingPacks: GET /api/v1/billing/packs —— 在售积分包（微信渠道 P5.2 上线前仅展示）。
func (h *Handler) BillingPacks(c *gin.Context) {
	packs, err := h.db.ActivePacks(c.Request.Context())
	if err != nil {
		c.JSON(http.StatusBadGateway, gin.H{"error": err.Error()})
		return
	}
	c.JSON(http.StatusOK, gin.H{"packs": packs, "channels": []string{store.ChannelRedeem}})
}

// BillingRedeem: POST /api/v1/billing/redeem {code} —— 核销兑换码，积分入计费租户。
func (h *Handler) BillingRedeem(c *gin.Context) {
	var b struct {
		Code string `json:"code"`
	}
	if err := c.ShouldBindJSON(&b); err != nil || strings.TrimSpace(b.Code) == "" {
		c.JSON(http.StatusBadRequest, gin.H{"error": "code 必填"})
		return
	}
	ctx := c.Request.Context()
	uid := userID(c)
	billing := h.db.ResolveBillingTenantID(ctx, uid, tenantID(c))
	if billing == "" {
		c.JSON(http.StatusBadRequest, gin.H{"error": "无计费租户上下文"})
		return
	}
	order, err := h.db.Redeem(ctx, b.Code, billing, uid)
	if err != nil {
		c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
		return
	}
	c.JSON(http.StatusOK, gin.H{
		"order":         order,
		"balance_micro": h.db.TenantBalance(ctx, billing),
	})
}

// BillingOrders: GET /api/v1/billing/orders —— 计费租户最近充值记录（账单页展示）。
func (h *Handler) BillingOrders(c *gin.Context) {
	ctx := c.Request.Context()
	billing := h.db.ResolveBillingTenantID(ctx, userID(c), tenantID(c))
	rows, err := h.db.TenantOrders(ctx, billing, 20)
	if err != nil {
		c.JSON(http.StatusBadGateway, gin.H{"error": err.Error()})
		return
	}
	c.JSON(http.StatusOK, gin.H{"orders": rows})
}

// AdminGenRedeemCodes: POST /api/v1/admin/redeem-codes {credits, count, memo} —— 批量生成兑换码。
// credits 单位：积分（面向人，非 micro）。
func (h *Handler) AdminGenRedeemCodes(c *gin.Context) {
	var b struct {
		Credits float64 `json:"credits"`
		Count   int     `json:"count"`
		Memo    string  `json:"memo"`
	}
	if err := c.ShouldBindJSON(&b); err != nil || b.Credits <= 0 {
		c.JSON(http.StatusBadRequest, gin.H{"error": "credits 必填且为正"})
		return
	}
	if b.Count <= 0 {
		b.Count = 1
	}
	codes, err := h.db.GenerateRedeemCodes(c.Request.Context(), b.Count, int64(b.Credits*1e6), b.Memo)
	if err != nil {
		c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
		return
	}
	c.JSON(http.StatusOK, gin.H{"codes": codes})
}

// AdminRedeemCodes: GET /api/v1/admin/redeem-codes —— 兑换码列表（含核销状态）。
func (h *Handler) AdminRedeemCodes(c *gin.Context) {
	rows, err := h.db.ListRedeemCodes(c.Request.Context(), 200)
	if err != nil {
		c.JSON(http.StatusBadGateway, gin.H{"error": err.Error()})
		return
	}
	c.JSON(http.StatusOK, gin.H{"codes": rows})
}

// AdminSavePack: PUT /api/v1/admin/packs {id?, name, credits, price_fen, active, sort} —— 配积分包。
func (h *Handler) AdminSavePack(c *gin.Context) {
	var b struct {
		ID       string  `json:"id"`
		Name     string  `json:"name"`
		Credits  float64 `json:"credits"` // 积分（面向人）
		PriceFen int64   `json:"price_fen"`
		Active   bool    `json:"active"`
		Sort     int     `json:"sort"`
	}
	if err := c.ShouldBindJSON(&b); err != nil {
		c.JSON(http.StatusBadRequest, gin.H{"error": "参数错误"})
		return
	}
	pk := &store.CreditPack{Name: strings.TrimSpace(b.Name), CreditsMicro: int64(b.Credits * 1e6), PriceFen: b.PriceFen, Active: b.Active, Sort: b.Sort}
	pk.ID = b.ID
	if err := h.db.SavePack(c.Request.Context(), pk); err != nil {
		c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
		return
	}
	c.JSON(http.StatusOK, gin.H{"pack": pk})
}

// AdminPacks: GET /api/v1/admin/packs —— 全部积分包（含下架）。
func (h *Handler) AdminPacks(c *gin.Context) {
	rows, err := h.db.ListPacks(c.Request.Context())
	if err != nil {
		c.JSON(http.StatusBadGateway, gin.H{"error": err.Error()})
		return
	}
	c.JSON(http.StatusOK, gin.H{"packs": rows})
}