package controllers

import (
	"encoding/json"
	"fmt"
	"io"
	"strconv"
	"strings"

	"server/pkg/jwtutil"
	"server/services"

	beego "github.com/beego/beego/v2/server/web"
)

type BackendSiteReminderController struct {
	beego.Controller
}

func (c *BackendSiteReminderController) backendClaims() (*jwtutil.Claims, error) {
	auth := c.Ctx.Request.Header.Get("Authorization")
	if auth == "" {
		return nil, fmt.Errorf("未登录")
	}
	parts := strings.SplitN(auth, " ", 2)
	if len(parts) != 2 || parts[0] != "Bearer" {
		return nil, fmt.Errorf("认证信息格式错误")
	}
	claims, err := jwtutil.ParseToken(parts[1])
	if err != nil {
		return nil, fmt.Errorf("无效的token")
	}
	if claims.UserType != "backend" {
		return nil, fmt.Errorf("无权访问")
	}
	return claims, nil
}

func (c *BackendSiteReminderController) jsonErr(httpStatus, bizCode int, msg string) {
	c.Ctx.Output.SetStatus(httpStatus)
	c.Data["json"] = map[string]interface{}{"code": bizCode, "msg": msg}
	_ = c.ServeJSON()
}

// GetMyList GET /backend/sitereminder/myList
func (c *BackendSiteReminderController) GetMyList() {
	claims, err := c.backendClaims()
	if err != nil {
		c.jsonErr(401, 401, err.Error())
		return
	}
	page, _ := c.GetInt("page", 1)
	pageSize, _ := c.GetInt("pageSize", 10)
	var isRead *int8
	if isReadStr := c.GetString("isRead"); isReadStr != "" {
		if val, err := strconv.Atoi(isReadStr); err == nil {
			v := int8(val)
			isRead = &v
		}
	}

	list, total, err := services.ListReminders(uint64(claims.UserID), "tenant", page, pageSize, isRead)
	if err != nil {
		c.jsonErr(500, 500, "获取消息列表失败: "+err.Error())
		return
	}

	c.Data["json"] = map[string]interface{}{
		"code": 200,
		"msg":  "success",
		"data": map[string]interface{}{
			"list":  list,
			"total": total,
		},
	}
	_ = c.ServeJSON()
}

// MarkRead POST /backend/sitereminder/read
func (c *BackendSiteReminderController) MarkRead() {
	claims, err := c.backendClaims()
	if err != nil {
		c.jsonErr(401, 401, err.Error())
		return
	}
	raw, err := io.ReadAll(c.Ctx.Request.Body)
	if err != nil {
		c.jsonErr(400, 400, "参数错误")
		return
	}
	var p struct {
		ID uint64 `json:"id"`
	}
	if err := json.Unmarshal(raw, &p); err != nil {
		c.jsonErr(400, 400, "参数错误")
		return
	}

	err = services.MarkReminderRead(p.ID, uint64(claims.UserID), "tenant")
	if err != nil {
		c.jsonErr(500, 500, "操作失败: "+err.Error())
		return
	}
	c.Data["json"] = map[string]interface{}{"code": 200, "msg": "success"}
	_ = c.ServeJSON()
}

// MarkAllRead POST /backend/sitereminder/readall
func (c *BackendSiteReminderController) MarkAllRead() {
	claims, err := c.backendClaims()
	if err != nil {
		c.jsonErr(401, 401, err.Error())
		return
	}
	err = services.MarkAllRemindersRead(uint64(claims.UserID), "tenant")
	if err != nil {
		c.jsonErr(500, 500, "操作失败: "+err.Error())
		return
	}
	c.Data["json"] = map[string]interface{}{"code": 200, "msg": "success"}
	_ = c.ServeJSON()
}

// Delete POST /backend/sitereminder/delete
func (c *BackendSiteReminderController) Delete() {
	claims, err := c.backendClaims()
	if err != nil {
		c.jsonErr(401, 401, err.Error())
		return
	}
	raw, err := io.ReadAll(c.Ctx.Request.Body)
	if err != nil {
		c.jsonErr(400, 400, "参数错误")
		return
	}
	var p struct {
		ID uint64 `json:"id"`
	}
	if err := json.Unmarshal(raw, &p); err != nil {
		c.jsonErr(400, 400, "参数错误")
		return
	}

	err = services.DeleteReminder(p.ID, uint64(claims.UserID), "tenant")
	if err != nil {
		c.jsonErr(500, 500, "删除失败: "+err.Error())
		return
	}
	c.Data["json"] = map[string]interface{}{"code": 200, "msg": "success"}
	_ = c.ServeJSON()
}