package controllers

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

	"server/models"
	"server/pkg/jwtutil"

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

// BackendNotifyConfigController 租户用户通知配置控制器
type BackendNotifyConfigController struct {
	beego.Controller
}

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

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

type notifyConfigPayload struct {
	Email         string `json:"email"`
	Phone         string `json:"phone"`
	BarkDeviceKey string `json:"bark_device_key"`
	BarkServerURL string `json:"bark_server_url"`
}

// GetConfig GET /backend/notify-config
// 获取当前登录用户的通知配置
func (c *BackendNotifyConfigController) GetConfig() {
	claims, err := c.ncClaims()
	if err != nil {
		c.ncJsonErr(401, 401, err.Error())
		return
	}

	cfg := models.GetBackendUserNotifyConfig(uint64(claims.TenantId), uint64(claims.UserID))
	if cfg == nil {
		// 未配置时返回空结构，前端可以直接展示空表单
		cfg = &models.BackendUserNotifyConfig{}
	}
	c.ncOk(cfg)
}

// UpdateConfig PUT /backend/notify-config
// 更新当前登录用户的通知配置（不存在则创建）
func (c *BackendNotifyConfigController) UpdateConfig() {
	claims, err := c.ncClaims()
	if err != nil {
		c.ncJsonErr(401, 401, err.Error())
		return
	}

	raw, err := io.ReadAll(c.Ctx.Request.Body)
	if err != nil {
		c.ncJsonErr(400, 400, "参数错误")
		return
	}
	var p notifyConfigPayload
	if err := json.Unmarshal(raw, &p); err != nil {
		c.ncJsonErr(400, 400, "参数错误")
		return
	}

	tid := uint64(claims.TenantId)
	uid := uint64(claims.UserID)
	now := time.Now()

	cfg := models.GetBackendUserNotifyConfig(tid, uid)
	if cfg == nil {
		cfg = &models.BackendUserNotifyConfig{
			Tid:        tid,
			UserID:     uid,
			CreateTime: now,
		}
	}

	cfg.Email = ncStrPtr(p.Email)
	cfg.Phone = ncStrPtr(p.Phone)
	cfg.BarkDeviceKey = ncStrPtr(p.BarkDeviceKey)
	cfg.BarkServerURL = ncStrPtr(p.BarkServerURL)
	cfg.UpdateTime = now

	if cfg.ID == 0 {
		if _, err := models.Orm.Insert(cfg); err != nil {
			c.ncJsonErr(500, 500, "保存失败: "+err.Error())
			return
		}
	} else {
		if _, err := models.Orm.Update(cfg, "Email", "Phone", "BarkDeviceKey", "BarkServerURL", "UpdateTime"); err != nil {
			c.ncJsonErr(500, 500, "更新失败: "+err.Error())
			return
		}
	}

	c.ncOk(nil)
}

// ncStrPtr 字符串转指针，空字符串返回 nil
func ncStrPtr(s string) *string {
	s = strings.TrimSpace(s)
	if s == "" {
		return nil
	}
	return &s
}