package admin

import (
    "encoding/base64"
    "net/http"
    "net/url"

    "bindbox-game/configs"
    "bindbox-game/internal/code"
    "bindbox-game/internal/pkg/core"
    "bindbox-game/internal/pkg/validation"
    "bindbox-game/internal/pkg/wechat"
)

type miniappQRCodeRequest struct {
    InviteCode string `json:"invite_code"`
    DouyinID   string `json:"douyin_id"`
    Width      *int   `json:"width"`
}

type miniappQRCodeResponse struct {
    ImageBase64 string `json:"image_base64"`
}

func (h *handler) GenerateMiniAppQRCode() core.HandlerFunc {
    return func(ctx core.Context) {
        req := new(miniappQRCodeRequest)
        if err := ctx.ShouldBindJSON(req); err != nil {
            ctx.AbortWithError(core.Error(http.StatusBadRequest, code.ParamBindError, validation.Error(err)))
            return
        }
        if req.InviteCode == "" || req.DouyinID == "" {
            ctx.AbortWithError(core.Error(http.StatusBadRequest, code.ParamBindError, "invite_code 与 douyin_id 不能为空"))
            return
        }
        path := "/pages/login/index?invite_code=" + url.QueryEscape(req.InviteCode) + "&douyin_id=" + url.QueryEscape(req.DouyinID)
        cfg := configs.Get()
        wxcfg := &wechat.WechatConfig{AppID: cfg.Wechat.AppID, AppSecret: cfg.Wechat.AppSecret}
        q := &wechat.QRCodeRequest{Path: path}
        if req.Width != nil { q.Width = *req.Width }
        rsp, err := wechat.GetQRCodeWithConfig(ctx, wxcfg, q)
        if err != nil {
            ctx.AbortWithError(core.Error(http.StatusBadRequest, 12001, err.Error()))
            return
        }
        out := &miniappQRCodeResponse{ImageBase64: base64.StdEncoding.EncodeToString(rsp.Buffer)}
        ctx.Payload(out)
    }
}