745 lines
19 KiB
Go
745 lines
19 KiB
Go
package handler
|
||
|
||
import (
|
||
"encoding/json"
|
||
"fmt"
|
||
"net/http"
|
||
"strings"
|
||
"time"
|
||
|
||
"soul-api/internal/database"
|
||
"soul-api/internal/model"
|
||
"soul-api/internal/wechat"
|
||
|
||
"github.com/gin-gonic/gin"
|
||
"gorm.io/gorm"
|
||
)
|
||
|
||
// MiniprogramLogin POST /api/miniprogram/login
|
||
func MiniprogramLogin(c *gin.Context) {
|
||
var req struct {
|
||
Code string `json:"code" binding:"required"`
|
||
}
|
||
|
||
if err := c.ShouldBindJSON(&req); err != nil {
|
||
c.JSON(http.StatusBadRequest, gin.H{"success": false, "error": "缺少登录code"})
|
||
return
|
||
}
|
||
|
||
// 调用微信接口获取 openid 和 session_key
|
||
openID, sessionKey, _, err := wechat.Code2Session(req.Code)
|
||
if err != nil {
|
||
c.JSON(http.StatusBadRequest, gin.H{"success": false, "error": fmt.Sprintf("微信登录失败: %v", err)})
|
||
return
|
||
}
|
||
|
||
db := database.DB()
|
||
|
||
// 查询用户是否存在
|
||
var user model.User
|
||
result := db.Where("open_id = ?", openID).First(&user)
|
||
|
||
isNewUser := result.Error != nil
|
||
|
||
if isNewUser {
|
||
// 创建新用户
|
||
userID := openID // 直接使用 openid 作为用户 ID
|
||
referralCode := "SOUL" + strings.ToUpper(openID[len(openID)-6:])
|
||
nickname := "微信用户" + openID[len(openID)-4:]
|
||
avatar := ""
|
||
hasFullBook := false
|
||
earnings := 0.0
|
||
pendingEarnings := 0.0
|
||
referralCount := 0
|
||
purchasedSections := "[]"
|
||
|
||
user = model.User{
|
||
ID: userID,
|
||
OpenID: &openID,
|
||
SessionKey: &sessionKey,
|
||
Nickname: &nickname,
|
||
Avatar: &avatar,
|
||
ReferralCode: &referralCode,
|
||
HasFullBook: &hasFullBook,
|
||
PurchasedSections: &purchasedSections,
|
||
Earnings: &earnings,
|
||
PendingEarnings: &pendingEarnings,
|
||
ReferralCount: &referralCount,
|
||
}
|
||
|
||
if err := db.Create(&user).Error; err != nil {
|
||
c.JSON(http.StatusInternalServerError, gin.H{"success": false, "error": "创建用户失败"})
|
||
return
|
||
}
|
||
} else {
|
||
// 更新 session_key
|
||
db.Model(&user).Update("session_key", sessionKey)
|
||
}
|
||
|
||
// 从 orders 表查询真实购买记录
|
||
var purchasedSections []string
|
||
var orderRows []struct {
|
||
ProductID string `gorm:"column:product_id"`
|
||
}
|
||
|
||
db.Raw(`
|
||
SELECT DISTINCT product_id
|
||
FROM orders
|
||
WHERE user_id = ?
|
||
AND status = 'paid'
|
||
AND product_type = 'section'
|
||
`, user.ID).Scan(&orderRows)
|
||
|
||
for _, row := range orderRows {
|
||
if row.ProductID != "" {
|
||
purchasedSections = append(purchasedSections, row.ProductID)
|
||
}
|
||
}
|
||
|
||
if purchasedSections == nil {
|
||
purchasedSections = []string{}
|
||
}
|
||
|
||
// 构建返回的用户对象
|
||
responseUser := map[string]interface{}{
|
||
"id": user.ID,
|
||
"openId": getStringValue(user.OpenID),
|
||
"nickname": getStringValue(user.Nickname),
|
||
"avatar": getStringValue(user.Avatar),
|
||
"phone": getStringValue(user.Phone),
|
||
"wechatId": getStringValue(user.WechatID),
|
||
"referralCode": getStringValue(user.ReferralCode),
|
||
"hasFullBook": getBoolValue(user.HasFullBook),
|
||
"purchasedSections": purchasedSections,
|
||
"earnings": getFloatValue(user.Earnings),
|
||
"pendingEarnings": getFloatValue(user.PendingEarnings),
|
||
"referralCount": getIntValue(user.ReferralCount),
|
||
"createdAt": user.CreatedAt,
|
||
}
|
||
|
||
// 生成 token
|
||
token := fmt.Sprintf("tk_%s_%d", openID[len(openID)-8:], time.Now().Unix())
|
||
|
||
c.JSON(http.StatusOK, gin.H{
|
||
"success": true,
|
||
"data": map[string]interface{}{
|
||
"openId": openID,
|
||
"user": responseUser,
|
||
"token": token,
|
||
},
|
||
"isNewUser": isNewUser,
|
||
})
|
||
}
|
||
|
||
// 辅助函数
|
||
func getStringValue(ptr *string) string {
|
||
if ptr == nil {
|
||
return ""
|
||
}
|
||
return *ptr
|
||
}
|
||
|
||
func getBoolValue(ptr *bool) bool {
|
||
if ptr == nil {
|
||
return false
|
||
}
|
||
return *ptr
|
||
}
|
||
|
||
func getFloatValue(ptr *float64) float64 {
|
||
if ptr == nil {
|
||
return 0.0
|
||
}
|
||
return *ptr
|
||
}
|
||
|
||
func getIntValue(ptr *int) int {
|
||
if ptr == nil {
|
||
return 0
|
||
}
|
||
return *ptr
|
||
}
|
||
|
||
// MiniprogramPay GET/POST /api/miniprogram/pay
|
||
func MiniprogramPay(c *gin.Context) {
|
||
if c.Request.Method == "POST" {
|
||
miniprogramPayPost(c)
|
||
} else {
|
||
miniprogramPayGet(c)
|
||
}
|
||
}
|
||
|
||
// POST - 创建小程序支付订单
|
||
func miniprogramPayPost(c *gin.Context) {
|
||
var req struct {
|
||
OpenID string `json:"openId" binding:"required"`
|
||
ProductType string `json:"productType" binding:"required"`
|
||
ProductID string `json:"productId"`
|
||
Amount float64 `json:"amount" binding:"required"`
|
||
Description string `json:"description"`
|
||
UserID string `json:"userId"`
|
||
ReferralCode string `json:"referralCode"`
|
||
}
|
||
|
||
if err := c.ShouldBindJSON(&req); err != nil {
|
||
c.JSON(http.StatusBadRequest, gin.H{"success": false, "error": "缺少openId参数，请先登录"})
|
||
return
|
||
}
|
||
|
||
if req.Amount <= 0 {
|
||
c.JSON(http.StatusBadRequest, gin.H{"success": false, "error": "支付金额无效"})
|
||
return
|
||
}
|
||
|
||
db := database.DB()
|
||
|
||
// 获取推广配置计算好友优惠
|
||
finalAmount := req.Amount
|
||
if req.ReferralCode != "" {
|
||
var cfg model.SystemConfig
|
||
if err := db.Where("config_key = ?", "referral_config").First(&cfg).Error; err == nil {
|
||
var config map[string]interface{}
|
||
if err := json.Unmarshal(cfg.ConfigValue, &config); err == nil {
|
||
if userDiscount, ok := config["userDiscount"].(float64); ok && userDiscount > 0 {
|
||
discountRate := userDiscount / 100
|
||
finalAmount = req.Amount * (1 - discountRate)
|
||
if finalAmount < 0.01 {
|
||
finalAmount = 0.01
|
||
}
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
// 生成订单号
|
||
orderSn := wechat.GenerateOrderSn()
|
||
totalFee := int(finalAmount * 100) // 转为分
|
||
description := req.Description
|
||
if description == "" {
|
||
if req.ProductType == "fullbook" {
|
||
description = "《一场Soul的创业实验》全书"
|
||
} else {
|
||
description = fmt.Sprintf("章节购买-%s", req.ProductID)
|
||
}
|
||
}
|
||
|
||
// 获取客户端 IP
|
||
clientIP := c.ClientIP()
|
||
if clientIP == "" {
|
||
clientIP = "127.0.0.1"
|
||
}
|
||
|
||
// 查询用户的有效推荐人
|
||
var referrerID *string
|
||
if req.UserID != "" {
|
||
var binding struct {
|
||
ReferrerID string `gorm:"column:referrer_id"`
|
||
}
|
||
err := db.Raw(`
|
||
SELECT referrer_id
|
||
FROM referral_bindings
|
||
WHERE referee_id = ? AND status = 'active' AND expiry_date > NOW()
|
||
ORDER BY binding_date DESC
|
||
LIMIT 1
|
||
`, req.UserID).Scan(&binding).Error
|
||
|
||
if err == nil && binding.ReferrerID != "" {
|
||
referrerID = &binding.ReferrerID
|
||
}
|
||
}
|
||
|
||
// 如果没有绑定，尝试从邀请码解析推荐人
|
||
if referrerID == nil && req.ReferralCode != "" {
|
||
var refUser model.User
|
||
if err := db.Where("referral_code = ?", req.ReferralCode).First(&refUser).Error; err == nil {
|
||
referrerID = &refUser.ID
|
||
}
|
||
}
|
||
|
||
// 插入订单到数据库
|
||
userID := req.UserID
|
||
if userID == "" {
|
||
userID = req.OpenID
|
||
}
|
||
|
||
productID := req.ProductID
|
||
if productID == "" {
|
||
productID = "fullbook"
|
||
}
|
||
|
||
status := "created"
|
||
order := model.Order{
|
||
ID: orderSn,
|
||
OrderSN: orderSn,
|
||
UserID: userID,
|
||
OpenID: req.OpenID,
|
||
ProductType: req.ProductType,
|
||
ProductID: &productID,
|
||
Amount: finalAmount,
|
||
Description: &description,
|
||
Status: &status,
|
||
ReferrerID: referrerID,
|
||
ReferralCode: &req.ReferralCode,
|
||
}
|
||
|
||
if err := db.Create(&order).Error; err != nil {
|
||
// 订单创建失败，但不中断支付流程
|
||
fmt.Printf("[MiniprogramPay] 插入订单失败: %v\n", err)
|
||
}
|
||
|
||
// 调用微信统一下单
|
||
params := map[string]string{
|
||
"body": description,
|
||
"out_trade_no": orderSn,
|
||
"total_fee": fmt.Sprintf("%d", totalFee),
|
||
"spbill_create_ip": clientIP,
|
||
"notify_url": "https://soul.quwanzhi.com/api/miniprogram/pay/notify",
|
||
"trade_type": "JSAPI",
|
||
"openid": req.OpenID,
|
||
"attach": fmt.Sprintf(`{"productType":"%s","productId":"%s","userId":"%s"}`, req.ProductType, req.ProductID, userID),
|
||
}
|
||
|
||
result, err := wechat.PayV2UnifiedOrder(params)
|
||
if err != nil {
|
||
c.JSON(http.StatusInternalServerError, gin.H{"success": false, "error": fmt.Sprintf("微信支付请求失败: %v", err)})
|
||
return
|
||
}
|
||
|
||
prepayID := result["prepay_id"]
|
||
if prepayID == "" {
|
||
c.JSON(http.StatusInternalServerError, gin.H{"success": false, "error": "微信支付返回数据异常"})
|
||
return
|
||
}
|
||
|
||
// 生成小程序支付参数
|
||
payParams := wechat.GenerateJSAPIPayParams(prepayID)
|
||
|
||
c.JSON(http.StatusOK, gin.H{
|
||
"success": true,
|
||
"data": map[string]interface{}{
|
||
"orderSn": orderSn,
|
||
"prepayId": prepayID,
|
||
"payParams": payParams,
|
||
},
|
||
})
|
||
}
|
||
|
||
// GET - 查询订单状态
|
||
func miniprogramPayGet(c *gin.Context) {
|
||
orderSn := c.Query("orderSn")
|
||
if orderSn == "" {
|
||
c.JSON(http.StatusBadRequest, gin.H{"success": false, "error": "缺少订单号"})
|
||
return
|
||
}
|
||
|
||
result, err := wechat.PayV2OrderQuery(orderSn)
|
||
if err != nil {
|
||
c.JSON(http.StatusOK, gin.H{
|
||
"success": true,
|
||
"data": map[string]interface{}{
|
||
"status": "unknown",
|
||
"orderSn": orderSn,
|
||
},
|
||
})
|
||
return
|
||
}
|
||
|
||
// 映射微信支付状态
|
||
tradeState := result["trade_state"]
|
||
status := "paying"
|
||
|
||
switch tradeState {
|
||
case "SUCCESS":
|
||
status = "paid"
|
||
case "CLOSED", "REVOKED", "PAYERROR":
|
||
status = "failed"
|
||
case "REFUND":
|
||
status = "refunded"
|
||
}
|
||
|
||
totalFee := 0
|
||
if result["total_fee"] != "" {
|
||
fmt.Sscanf(result["total_fee"], "%d", &totalFee)
|
||
}
|
||
|
||
c.JSON(http.StatusOK, gin.H{
|
||
"success": true,
|
||
"data": map[string]interface{}{
|
||
"status": status,
|
||
"orderSn": orderSn,
|
||
"transactionId": result["transaction_id"],
|
||
"totalFee": totalFee,
|
||
},
|
||
})
|
||
}
|
||
|
||
// MiniprogramPayNotify POST /api/miniprogram/pay/notify
|
||
func MiniprogramPayNotify(c *gin.Context) {
|
||
// 读取 XML body
|
||
body, err := c.GetRawData()
|
||
if err != nil {
|
||
c.String(http.StatusBadRequest, failResponse())
|
||
return
|
||
}
|
||
|
||
// 解析 XML
|
||
data := wechat.XMLToMap(string(body))
|
||
|
||
// 验证签名
|
||
if !wechat.VerifyPayNotify(data) {
|
||
fmt.Println("[PayNotify] 签名验证失败")
|
||
c.String(http.StatusOK, failResponse())
|
||
return
|
||
}
|
||
|
||
// 检查支付结果
|
||
if data["return_code"] != "SUCCESS" || data["result_code"] != "SUCCESS" {
|
||
fmt.Printf("[PayNotify] 支付未成功: %s\n", data["err_code"])
|
||
c.String(http.StatusOK, successResponse())
|
||
return
|
||
}
|
||
|
||
orderSn := data["out_trade_no"]
|
||
transactionID := data["transaction_id"]
|
||
totalFee := 0
|
||
fmt.Sscanf(data["total_fee"], "%d", &totalFee)
|
||
totalAmount := float64(totalFee) / 100
|
||
openID := data["openid"]
|
||
|
||
fmt.Printf("[PayNotify] 支付成功: orderSn=%s, transactionId=%s, amount=%.2f\n", orderSn, transactionID, totalAmount)
|
||
|
||
// 解析附加数据
|
||
var attach struct {
|
||
ProductType string `json:"productType"`
|
||
ProductID string `json:"productId"`
|
||
UserID string `json:"userId"`
|
||
}
|
||
if data["attach"] != "" {
|
||
json.Unmarshal([]byte(data["attach"]), &attach)
|
||
}
|
||
|
||
db := database.DB()
|
||
|
||
// 用 openID 解析真实买家身份
|
||
buyerUserID := attach.UserID
|
||
if openID != "" {
|
||
var user model.User
|
||
if err := db.Where("open_id = ?", openID).First(&user).Error; err == nil {
|
||
if attach.UserID != "" && user.ID != attach.UserID {
|
||
fmt.Printf("[PayNotify] 买家身份校验: attach.userId 与 openId 解析不一致，以 openId 为准\n")
|
||
}
|
||
buyerUserID = user.ID
|
||
}
|
||
}
|
||
if buyerUserID == "" && attach.UserID != "" {
|
||
buyerUserID = attach.UserID
|
||
}
|
||
|
||
// 更新订单状态
|
||
var order model.Order
|
||
result := db.Where("order_sn = ?", orderSn).First(&order)
|
||
|
||
if result.Error != nil {
|
||
// 订单不存在，补记订单
|
||
fmt.Printf("[PayNotify] 订单不存在，补记订单: %s\n", orderSn)
|
||
|
||
productID := attach.ProductID
|
||
if productID == "" {
|
||
productID = "fullbook"
|
||
}
|
||
productType := attach.ProductType
|
||
if productType == "" {
|
||
productType = "unknown"
|
||
}
|
||
desc := "支付回调补记订单"
|
||
status := "paid"
|
||
now := time.Now()
|
||
|
||
order = model.Order{
|
||
ID: orderSn,
|
||
OrderSN: orderSn,
|
||
UserID: buyerUserID,
|
||
OpenID: openID,
|
||
ProductType: productType,
|
||
ProductID: &productID,
|
||
Amount: totalAmount,
|
||
Description: &desc,
|
||
Status: &status,
|
||
TransactionID: &transactionID,
|
||
PayTime: &now,
|
||
}
|
||
|
||
db.Create(&order)
|
||
} else if *order.Status != "paid" {
|
||
// 更新订单状态
|
||
status := "paid"
|
||
now := time.Now()
|
||
db.Model(&order).Updates(map[string]interface{}{
|
||
"status": status,
|
||
"transaction_id": transactionID,
|
||
"pay_time": now,
|
||
})
|
||
fmt.Printf("[PayNotify] 订单状态已更新为已支付: %s\n", orderSn)
|
||
} else {
|
||
fmt.Printf("[PayNotify] 订单已支付，跳过更新: %s\n", orderSn)
|
||
}
|
||
|
||
// 更新用户购买记录
|
||
if buyerUserID != "" && attach.ProductType != "" {
|
||
if attach.ProductType == "fullbook" {
|
||
// 全书购买
|
||
db.Model(&model.User{}).Where("id = ?", buyerUserID).Update("has_full_book", true)
|
||
fmt.Printf("[PayNotify] 用户已购全书: %s\n", buyerUserID)
|
||
} else if attach.ProductType == "section" && attach.ProductID != "" {
|
||
// 检查是否已有该章节的其他已支付订单
|
||
var count int64
|
||
db.Model(&model.Order{}).Where(
|
||
"user_id = ? AND product_type = 'section' AND product_id = ? AND status = 'paid' AND order_sn != ?",
|
||
buyerUserID, attach.ProductID, orderSn,
|
||
).Count(&count)
|
||
|
||
if count == 0 {
|
||
// 首次购买该章节，这里不需要更新 purchased_sections，因为查询时会从 orders 表读取
|
||
fmt.Printf("[PayNotify] 用户首次购买章节: %s - %s\n", buyerUserID, attach.ProductID)
|
||
} else {
|
||
fmt.Printf("[PayNotify] 用户已有该章节的其他已支付订单: %s - %s\n", buyerUserID, attach.ProductID)
|
||
}
|
||
}
|
||
|
||
// 清理相同产品的无效订单
|
||
productID := attach.ProductID
|
||
if productID == "" {
|
||
productID = "fullbook"
|
||
}
|
||
|
||
result := db.Where(
|
||
"user_id = ? AND product_type = ? AND product_id = ? AND status = 'created' AND order_sn != ?",
|
||
buyerUserID, attach.ProductType, productID, orderSn,
|
||
).Delete(&model.Order{})
|
||
|
||
if result.RowsAffected > 0 {
|
||
fmt.Printf("[PayNotify] 已清理无效订单: %d 个\n", result.RowsAffected)
|
||
}
|
||
|
||
// 处理分销佣金
|
||
processReferralCommission(db, buyerUserID, totalAmount, orderSn)
|
||
}
|
||
|
||
c.String(http.StatusOK, successResponse())
|
||
}
|
||
|
||
// 处理分销佣金
|
||
func processReferralCommission(db *gorm.DB, buyerUserID string, amount float64, orderSn string) {
|
||
// 获取分成配置，默认 90%
|
||
distributorShare := 0.9
|
||
var cfg model.SystemConfig
|
||
if err := db.Where("config_key = ?", "referral_config").First(&cfg).Error; err == nil {
|
||
var config map[string]interface{}
|
||
if err := json.Unmarshal(cfg.ConfigValue, &config); err == nil {
|
||
if share, ok := config["distributorShare"].(float64); ok {
|
||
distributorShare = share / 100
|
||
}
|
||
}
|
||
}
|
||
|
||
// 查找有效推广绑定
|
||
type Binding struct {
|
||
ID int `gorm:"column:id"`
|
||
ReferrerID string `gorm:"column:referrer_id"`
|
||
ExpiryDate time.Time `gorm:"column:expiry_date"`
|
||
PurchaseCount int `gorm:"column:purchase_count"`
|
||
TotalCommission float64 `gorm:"column:total_commission"`
|
||
}
|
||
|
||
var binding Binding
|
||
err := db.Raw(`
|
||
SELECT id, referrer_id, expiry_date, purchase_count, total_commission
|
||
FROM referral_bindings
|
||
WHERE referee_id = ? AND status = 'active'
|
||
ORDER BY binding_date DESC
|
||
LIMIT 1
|
||
`, buyerUserID).Scan(&binding).Error
|
||
|
||
if err != nil {
|
||
fmt.Printf("[PayNotify] 用户无有效推广绑定，跳过分佣: %s\n", buyerUserID)
|
||
return
|
||
}
|
||
|
||
// 检查是否过期
|
||
if time.Now().After(binding.ExpiryDate) {
|
||
fmt.Printf("[PayNotify] 绑定已过期，跳过分佣: %s\n", buyerUserID)
|
||
return
|
||
}
|
||
|
||
// 计算佣金
|
||
commission := amount * distributorShare
|
||
newPurchaseCount := binding.PurchaseCount + 1
|
||
newTotalCommission := binding.TotalCommission + commission
|
||
|
||
fmt.Printf("[PayNotify] 处理分佣: referrerId=%s, amount=%.2f, commission=%.2f, shareRate=%.0f%%\n",
|
||
binding.ReferrerID, amount, commission, distributorShare*100)
|
||
|
||
// 更新推广者的待结算收益
|
||
db.Model(&model.User{}).Where("id = ?", binding.ReferrerID).
|
||
Update("pending_earnings", db.Raw("pending_earnings + ?", commission))
|
||
|
||
// 更新绑定记录
|
||
db.Exec(`
|
||
UPDATE referral_bindings
|
||
SET last_purchase_date = NOW(),
|
||
purchase_count = purchase_count + 1,
|
||
total_commission = total_commission + ?
|
||
WHERE id = ?
|
||
`, commission, binding.ID)
|
||
|
||
fmt.Printf("[PayNotify] 分佣完成: 推广者 %s 获得 %.2f 元（第 %d 次购买，累计 %.2f 元）\n",
|
||
binding.ReferrerID, commission, newPurchaseCount, newTotalCommission)
|
||
}
|
||
|
||
// 微信支付回调响应
|
||
func successResponse() string {
|
||
return `<xml><return_code><![CDATA[SUCCESS]]></return_code><return_msg><![CDATA[OK]]></return_msg></xml>`
|
||
}
|
||
|
||
func failResponse() string {
|
||
return `<xml><return_code><![CDATA[FAIL]]></return_code><return_msg><![CDATA[ERROR]]></return_msg></xml>`
|
||
}
|
||
|
||
// MiniprogramPhone POST /api/miniprogram/phone
|
||
func MiniprogramPhone(c *gin.Context) {
|
||
var req struct {
|
||
Code string `json:"code" binding:"required"`
|
||
UserID string `json:"userId"`
|
||
}
|
||
|
||
if err := c.ShouldBindJSON(&req); err != nil {
|
||
c.JSON(http.StatusBadRequest, gin.H{"success": false, "message": "缺少code参数"})
|
||
return
|
||
}
|
||
|
||
// 获取手机号
|
||
phoneNumber, countryCode, err := wechat.GetPhoneNumber(req.Code)
|
||
if err != nil {
|
||
c.JSON(http.StatusInternalServerError, gin.H{
|
||
"success": false,
|
||
"message": "获取手机号失败",
|
||
"error": err.Error(),
|
||
})
|
||
return
|
||
}
|
||
|
||
// 如果提供了 userId，更新到数据库
|
||
if req.UserID != "" {
|
||
db := database.DB()
|
||
db.Model(&model.User{}).Where("id = ?", req.UserID).Update("phone", phoneNumber)
|
||
fmt.Printf("[MiniprogramPhone] 手机号已绑定到用户: %s\n", req.UserID)
|
||
}
|
||
|
||
c.JSON(http.StatusOK, gin.H{
|
||
"success": true,
|
||
"phoneNumber": phoneNumber,
|
||
"countryCode": countryCode,
|
||
})
|
||
}
|
||
|
||
// MiniprogramQrcode POST /api/miniprogram/qrcode
|
||
func MiniprogramQrcode(c *gin.Context) {
|
||
var req struct {
|
||
Scene string `json:"scene"`
|
||
Page string `json:"page"`
|
||
Width int `json:"width"`
|
||
ChapterID string `json:"chapterId"`
|
||
UserID string `json:"userId"`
|
||
}
|
||
|
||
if err := c.ShouldBindJSON(&req); err != nil {
|
||
c.JSON(http.StatusBadRequest, gin.H{"success": false, "error": "参数错误"})
|
||
return
|
||
}
|
||
|
||
// 构建 scene 参数
|
||
scene := req.Scene
|
||
if scene == "" {
|
||
var parts []string
|
||
if req.UserID != "" {
|
||
userId := req.UserID
|
||
if len(userId) > 15 {
|
||
userId = userId[:15]
|
||
}
|
||
parts = append(parts, fmt.Sprintf("ref=%s", userId))
|
||
}
|
||
if req.ChapterID != "" {
|
||
parts = append(parts, fmt.Sprintf("ch=%s", req.ChapterID))
|
||
}
|
||
if len(parts) == 0 {
|
||
scene = "soul"
|
||
} else {
|
||
scene = strings.Join(parts, "&")
|
||
}
|
||
}
|
||
|
||
page := req.Page
|
||
if page == "" {
|
||
page = "pages/index/index"
|
||
}
|
||
|
||
width := req.Width
|
||
if width == 0 {
|
||
width = 280
|
||
}
|
||
|
||
fmt.Printf("[MiniprogramQrcode] 生成小程序码, scene=%s\n", scene)
|
||
|
||
// 生成小程序码
|
||
imageData, err := wechat.GenerateMiniProgramCode(scene, page, width)
|
||
if err != nil {
|
||
c.JSON(http.StatusOK, gin.H{
|
||
"success": false,
|
||
"error": fmt.Sprintf("生成小程序码失败: %v", err),
|
||
})
|
||
return
|
||
}
|
||
|
||
// 转换为 base64
|
||
base64Image := fmt.Sprintf("data:image/png;base64,%s", base64Encode(imageData))
|
||
|
||
c.JSON(http.StatusOK, gin.H{
|
||
"success": true,
|
||
"image": base64Image,
|
||
"scene": scene,
|
||
})
|
||
}
|
||
|
||
// base64 编码
|
||
func base64Encode(data []byte) string {
|
||
const base64Table = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/"
|
||
var result strings.Builder
|
||
|
||
for i := 0; i < len(data); i += 3 {
|
||
b1, b2, b3 := data[i], byte(0), byte(0)
|
||
if i+1 < len(data) {
|
||
b2 = data[i+1]
|
||
}
|
||
if i+2 < len(data) {
|
||
b3 = data[i+2]
|
||
}
|
||
|
||
result.WriteByte(base64Table[b1>>2])
|
||
result.WriteByte(base64Table[((b1&0x03)<<4)|(b2>>4)])
|
||
|
||
if i+1 < len(data) {
|
||
result.WriteByte(base64Table[((b2&0x0F)<<2)|(b3>>6)])
|
||
} else {
|
||
result.WriteByte('=')
|
||
}
|
||
|
||
if i+2 < len(data) {
|
||
result.WriteByte(base64Table[b3&0x3F])
|
||
} else {
|
||
result.WriteByte('=')
|
||
}
|
||
}
|
||
|
||
return result.String()
|
||
}
|