feat: update

backend/app/http/posts.go

@@ -1,6 +1,10 @@
 package http
 
 import (
+	_ "embed"
+	"encoding/json"
+	"strings"
+	"text/template"
 	"time"
 
 	"quyun/app/models"
@@ -8,7 +12,6 @@ import (
 	"quyun/database/schemas/public/model"
 	"quyun/providers/wepay"
 
-	"github.com/go-pay/gopay/wechat/v3"
 	"github.com/gofiber/fiber/v3"
 	"github.com/gofiber/fiber/v3/log"
 	"github.com/pkg/errors"
@@ -24,7 +27,7 @@ type posts struct {
 }
 
 // List posts
-// @Router			/posts [get]
+// @Router			/ [get]
 // @Bind pagination query
 // @Bind query query
 // @Bind user local
@@ -49,26 +52,29 @@ func (ctl *posts) Mine(ctx fiber.Ctx, pagination *requests.Pagination, query *Li
 	return models.Users.PostList(ctx.Context(), 1, pagination, query.Keyword)
 }
 
+//go:embed buy.html.tpl
+var buyTpl string
+
 // Buy
 // @Router			/buy/:id [get]
 // @Bind id path
-func (ctl *posts) Buy(ctx fiber.Ctx, id int64) (*wechat.JSAPIPayParams, error) {
+func (ctl *posts) Buy(ctx fiber.Ctx, id int64) error {
 	var userId int64 = 1
 
 	user, err := models.Users.GetByID(ctx.Context(), userId)
 	if err != nil {
-		return nil, errors.Wrapf(err, " failed to get user: %d", userId)
+		return errors.Wrapf(err, " failed to get user: %d", userId)
 	}
 
 	post, err := models.Posts.GetByID(ctx.Context(), id)
 	if err != nil {
-		return nil, errors.Wrapf(err, " failed to get post: %d", id)
+		return errors.Wrapf(err, " failed to get post: %d", id)
 	}
 
 	// create order
 	order, err := models.Orders.Create(ctx.Context(), userId, post.ID)
 	if err != nil {
-		return nil, errors.Wrap(err, "订单创建失败")
+		return errors.Wrap(err, "订单创建失败")
 	}
 
 	prePayResp, err := ctl.wepay.V3TransactionJsapi(ctx.Context(), func(bm *wepay.BodyMap) {
@@ -80,8 +86,30 @@ func (ctl *posts) Buy(ctx fiber.Ctx, id int64) (*wechat.JSAPIPayParams, error) {
 	})
 	if err != nil {
 		log.Errorf("wepay.V3TransactionJsapi err: %v", err)
-		return nil, errors.Wrap(err, "微信支付失败")
+		return errors.Wrap(err, "微信支付失败")
 	}
 
-	return prePayResp.PaySignOfJSAPI()
+	signature, err := prePayResp.PaySignOfJSAPI()
+	if err != nil {
+		return errors.Wrap(err, "failed to get pay sign")
+	}
+
+	// render buyTpl with html/template
+	tpl, err := template.New("buy").Parse(buyTpl)
+	if err != nil {
+		return errors.Wrap(err, "failed to parse template")
+	}
+
+	signatureBytes, err := json.Marshal(signature)
+	if err != nil {
+		return errors.Wrap(err, "failed to marshal signature")
+	}
+
+	var buf strings.Builder
+	if err := tpl.Execute(&buf, map[string]interface{}{"signature": string(signatureBytes)}); err != nil {
+		return errors.Wrap(err, "failed to execute template")
+	}
+
+	ctx.Set("Content-Type", "text/html; charset=utf-8")
+	return ctx.SendString(buf.String())
 }