package handlers

import (
	"encoding/json"
	"errors"
	"fmt"
	"platform/pkg/env"
	"platform/pkg/rds"
	"platform/pkg/u"
	"platform/web/auth"
	m "platform/web/models"
	q "platform/web/queries"
	"platform/web/services"
	"time"

	"github.com/gofiber/fiber/v2"
	jdc "github.com/jdcloud-api/jdcloud-sdk-go/core"
	"github.com/jdcloud-api/jdcloud-sdk-go/services/cloudauth/apis"
	jdclient "github.com/jdcloud-api/jdcloud-sdk-go/services/cloudauth/client"
	"github.com/redis/go-redis/v9"
)

// region Identify

type IdentifyReq struct {
	Type   int32  `json:"type" validate:"required,oneof=1 2"`
	Name   string `json:"name" validate:"required"`
	IdenNo string `json:"iden_no" validate:"required"`
}

type IdentifyRes struct {
	Identified bool   `json:"identified"`
	Target     string `json:"target"`
}

func Identify(c *fiber.Ctx) error {

	// 检查权限
	authCtx, err := auth.Protect(c, []auth.PayloadType{auth.PayloadUser}, []string{})
	if err != nil {
		return err
	}
	user, err := q.User.
		Where(q.User.ID.Eq(authCtx.Payload.Id)).
		Select(q.User.ID, q.User.IDToken).
		Take()
	if err != nil {
		return err
	}
	if user.IDToken != "" {
		// 用户已实名认证
		return c.JSON(IdentifyRes{
			Identified: true,
		})
	}

	// 解析请求参数
	req := new(IdentifyReq)
	if err := c.BodyParser(req); err != nil {
		return err
	}

	// 请求活体认证
	var id = services.ID.GenReadable("iden")

	var credential = jdc.NewCredentials(env.IdenAccessKey, env.IdenSecretKey)
	var client = jdclient.NewCloudauthClient(credential)
	resp, err := client.GetAliveUrl(apis.NewGetAliveUrlRequestWithAllParams(
		u.P(req.Name),
		u.P(req.IdenNo),
		env.IdenCallbackUrl+"?id="+id,
	))
	if err != nil {
		return err
	}

	// 保存认证中间状态
	info := idenInfo{
		Uid:   authCtx.Payload.Id,
		Type:  req.Type,
		Name:  req.Name,
		IdNo:  req.IdenNo,
		Token: resp.Result.Token,
	}
	infoStr, err := json.Marshal(info)
	if err != nil {
		return err
	}

	err = rds.Client.Set(c.Context(), idenKey(id), infoStr, 30*time.Minute).Err()
	if err != nil {
		return err
	}

	return c.JSON(IdentifyRes{
		Identified: false,
		Target:     resp.Result.Url,
	})
}

// endregion

// region IdentifyCallback

type IdentifyCallbackReq struct {
	Id string `json:"id" validate:"required"`
}

type IdentifyCallbackRes struct {
	Success bool   `json:"success"`
	Message string `json:"desc"`
}

func IdentifyCallback(c *fiber.Ctx) error {

	// 解析请求参数
	req := new(IdentifyCallbackReq)
	if err := c.BodyParser(req); err != nil {
		return err
	}

	// 获取 token
	infoStr, err := rds.Client.Get(c.Context(), idenKey(req.Id)).Result()
	if err != nil {
		if errors.Is(err, redis.Nil) {
			return c.JSON(IdentifyCallbackRes{
				Success: true,
				Message: "认证已完成",
			})
		}
		return err
	}
	info := idenInfo{}
	err = json.Unmarshal([]byte(infoStr), &info)
	if err != nil {
		return err
	}

	// 获取认证结果
	var credential = jdc.NewCredentials(env.IdenAccessKey, env.IdenSecretKey)
	var client = jdclient.NewCloudauthClient(credential)
	resp, err := client.GetAliveResult(apis.NewGetAliveResultRequestWithAllParams(
		info.Token,
	))
	if err != nil {
		return err
	}
	if resp.Error.Code != 0 {
		return c.JSON(IdentifyCallbackRes{
			Success: false,
			Message: resp.Error.Message,
		})
	}

	if resp.Result.H5Result != "ok" || resp.Result.SmResult != "ok" || resp.Result.RxResult != "ok" {
		return c.JSON(IdentifyCallbackRes{
			Success: false,
			Message: resp.Result.Desc,
		})
	}

	// 更新用户实名认证状态
	_, err = q.User.Debug().
		Where(q.User.ID.Eq(info.Uid)).
		Select(
			q.User.IDType,
			q.User.IDNo,
			q.User.IDToken,
			q.User.Name,
		).
		Updates(m.User{
			IDType:  info.Type,
			IDNo:    info.IdNo,
			IDToken: info.Token,
			Name:    info.Name,
		})
	if err != nil {
		return err
	}

	// 删除认证中间状态
	err = rds.Client.Del(c.Context(), idenKey(req.Id)).Err()
	if err != nil {
		return err
	}

	return c.JSON(IdentifyCallbackRes{
		Success: true,
		Message: resp.Result.Desc,
	})
}

// endregion

func idenKey(id string) string {
	return fmt.Sprintf("iden:%s", id)
}

type idenInfo struct {
	Uid   int32  `json:"uid"`
	Type  int32  `json:"type"`
	Name  string `json:"name"`
	IdNo  string `json:"id_no"`
	Token string `json:"token"`
}