package auth

import (
	"Cold_Logistic/internal/pkg/common/codex"
	"Cold_Logistic/internal/pkg/common/constant"
	"Cold_Logistic/internal/pkg/common/global"
	"Cold_Logistic/internal/pkg/common/options"
	"Cold_Logistic/internal/server/adapter/http/middleware"
	"Cold_Logistic/internal/server/application/authsrv"
	"Cold_Logistic/internal/server/infra/dao"
	"encoding/json"
	"fmt"
	"github.com/gin-gonic/gin"
	"github.com/skip2/go-qrcode"
	"gogs.baozhida.cn/Cold_Logistic_libs/pkg/contrib/core"
	"gogs.baozhida.cn/Cold_Logistic_libs/pkg/contrib/errors"
	"net/http"
	"net/url"
)

func Register(r *gin.RouterGroup) {
	api := NewApi()
	// 小程序登录
	r.POST("/auth/login", api.login)
	r.POST("/auth/wechatLogin", api.wechatLogin)
	r.POST("/auth/wechatCallback", api.wechatCallBack)

	r.POST("/auth/loginOut", middleware.Auth(), api.LoginOut)
	return
}

type Api struct{}

func NewApi() Api {
	return Api{}
}

// login
// @Tags 登录
// @BasePath /clodLogistic/app/api/v1
// @Summary 小程序登录
// @Success 200 {object}  authsrv.LoginRespVo
// @Param req body authsrv.LoginReqVo true "登录"
// @Accept application/json
// @Authorization Bearer
// @Router /app/auth/login [post]
func (api Api) login(c *gin.Context) {
	req := authsrv.LoginReqVo{}
	if err := c.ShouldBindJSON(&req); err != nil {
		core.WriteErrResponse(c, errors.WithCodeOnce(err, codex.ErrBindJSON, ""))
		return
	}

	err := req.Validate()
	if err != nil {
		core.WriteErrResponse(c, errors.WithCodeOnce(err, codex.ErrParamValidate, ""))
		return
	}

	srv := authsrv.NewAuthService(dao.NewDataStore(global.CommonConnectRepoInst.StoreDB))

	var res authsrv.LoginRespVo
	switch req.LoginType {
	case constant.AccountPlatform:
		res, err = srv.PlatformLogin(c, req)
		if err != nil {
			core.WriteErrResponse(c, errors.WithCodeOnce(err, codex.ErrSystemSrv, ""))
			return
		}
	case constant.AccountApplet:
		res, err = srv.UserLogin(c, req)
		if err != nil {
			core.WriteErrResponse(c, errors.WithCodeOnce(err, codex.ErrSystemSrv, ""))
			return
		}
	}

	core.WriteResponse(c, nil, res)
}

// wechatLogin
// @Tags 登录
// @BasePath /clodLogistic/app/api/v1
// @Summary 微信扫码登录
// @Success 200 {object}  authsrv.LoginRespVo
// @Accept application/json
// @Authorization Bearer
// @Router /app/auth/wechatLogin [post]
func (api Api) wechatLogin(c *gin.Context) {
	appId := options.OptInstance.Wechat.AppId
	state := ""                                                            //防止跨站请求伪造攻击 增加安全性
	redirectURL := url.QueryEscape(options.OptInstance.Wechat.RedirectUri) //userinfo,
	wechatLoginURL := fmt.Sprintf("https://open.weixin.qq.com/connect/qrconnect?appid=%s&redirect_uri=%s&response_type=code&state=%s&scope=snsapi_userinfo#wechat_redirect", appId, redirectURL, state)
	wechatLoginURL, _ = url.QueryUnescape(wechatLoginURL)

	// 生成二维码
	qrCode, err := qrcode.Encode(wechatLoginURL, qrcode.Medium, 256)
	if err != nil {
		// 错误处理
		c.String(http.StatusInternalServerError, "Error generating QR code")
		return
	}

	// c.Redirect(http.StatusTemporaryRedirect, wechatLoginURL)
	head := map[string]string{
		"Content-Type": "image/png",
	}
	// 将二维码图片作为响应返回给用户
	core.WriteBytesResponse(c, nil, qrCode, head)
}

// wechatCallBack
// @Tags 登录
// @BasePath /clodLogistic/app/api/v1
// @Summary 获取微信返回的授权码
// @Success 200 {object}  authsrv.LoginRespVo
// @failure 500 {string}  codex.ErrSystemSrv
// @Param req body authsrv.LoginReqVo true "登录"
// @Accept application/json
// @Authorization Bearer
// @Router /app/auth/wechatCallback [post]
func (api Api) wechatCallBack(c *gin.Context) {
	// 获取微信返回的授权码
	code := c.Query("code")
	appId := options.OptInstance.Wechat.AppId
	appSecret := options.OptInstance.Wechat.AppSecret
	// 向微信服务器发送请求，获取access_token和openid
	tokenResp, err := http.Get(fmt.Sprintf("https://api.weixin.qq.com/sns/oauth2/access_token?appid=%s&secret=%s&code=%s&grant_type=authorization_code", appId, appSecret, code))
	if err != nil {
		core.WriteErrResponse(c, errors.WithCodeOnce(err, codex.ErrParamValidate, "error,获取token失败"))
		return
	}

	// 解析响应中的access_token和openid
	var tokenData struct {
		AccessToken  string `json:"access_token"`
		ExpiresIn    int    `json:"expires_in"`
		RefreshToken string `json:"refresh_token"`
		OpenID       string `json:"openid"`
		Scope        string `json:"scope"`
	}
	if err1 := json.NewDecoder(tokenResp.Body).Decode(&tokenData); err1 != nil {
		core.WriteErrResponse(c, errors.WithCodeOnce(err, codex.ErrParamValidate, "error,获取token失败"))
		return
	}

	userInfoURL := fmt.Sprintf("https://api.weixin.qq.com/sns/userinfo?access_token=%s&openid=%s", tokenData.AccessToken, tokenData.OpenID)
	userInfoResp, err := http.Get(userInfoURL)
	defer userInfoResp.Body.Close()
	if err != nil {
		// 错误处理
		core.WriteErrResponse(c, errors.WithCodeOnce(err, codex.ErrParamValidate, "获取失败"))
		return
	}

	//------------------------------------
	var userData struct {
		OpenID   string `json:"openid"`
		Nickname string `json:"nickname"`
	}
	if err1 := json.NewDecoder(userInfoResp.Body).Decode(&userData); err1 != nil {
		// 错误处理
		core.WriteErrResponse(c, errors.WithCodeOnce(err, codex.ErrParamValidate, "获取用户信息失败"))
		return
	}

	req := authsrv.LoginReqVo{
		LoginType: constant.AccountApplet,
		Openid:    userData.OpenID,
		NickName:  userData.Nickname,
	}
	srv := authsrv.NewAuthService(dao.NewDataStore(global.CommonConnectRepoInst.StoreDB))
	res, err := srv.UserLogin(c, req)
	if err != nil {
		core.WriteErrResponse(c, errors.WithCodeOnce(err, codex.ErrSystemSrv, ""))
		return
	}

	core.WriteResponse(c, nil, res)
}

// LoginOut
// @Tags 登录
// @BasePath /clodLogistic/app/api/v1
// @Summary 登出
// @failure 500 {string}  codex.ErrSystemSrv
// @Success 200 {string}  "success"
// @Accept application/json
// @Authorization Bearer
// @Router /app/auth/loginOut [post]
func (api Api) LoginOut(c *gin.Context) {
	srv := authsrv.NewAuthService(dao.NewDataStore(global.CommonConnectRepoInst.StoreDB))
	err := srv.LoginOut(c)
	if err != nil {
		core.WriteErrResponse(c, errors.WithCodeOnce(err, codex.ErrSystemSrv, ""))
		return
	}
	core.WriteResponse(c, nil, "success")
}