package controllers

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

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

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

type PlatformSiteReminderController struct {
	beego.Controller
}

func (c *PlatformSiteReminderController) platformClaims() (*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 != "platform" {
		return nil, fmt.Errorf("无权访问")
	}
	return claims, nil
}

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

// GetConfig GET /platform/sitereminder/config
func (c *PlatformSiteReminderController) GetConfig() {
	if _, err := c.platformClaims(); err != nil {
		c.jsonErr(401, 401, err.Error())
		return
	}
	cfg, err := services.GetSiteReminderConfig()
	if err != nil {
		c.jsonErr(500, 500, "获取配置失败: "+err.Error())
		return
	}
	c.Data["json"] = map[string]interface{}{"code": 200, "msg": "success", "data": cfg}
	_ = c.ServeJSON()
}

// SaveConfig POST /platform/sitereminder/config
func (c *PlatformSiteReminderController) SaveConfig() {
	if _, err := c.platformClaims(); 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 {
		RetentionDays int  `json:"retention_days"`
		AutoRead      int8 `json:"auto_read"`
	}
	if err := json.Unmarshal(raw, &p); err != nil {
		c.jsonErr(400, 400, "参数错误")
		return
	}
	if err := services.SaveSiteReminderConfig(p.RetentionDays, p.AutoRead); err != nil {
		c.jsonErr(500, 500, "保存配置失败: "+err.Error())
		return
	}
	c.Data["json"] = map[string]interface{}{"code": 200, "msg": "保存成功"}
	_ = c.ServeJSON()
}

// Send POST /platform/sitereminder/send
func (c *PlatformSiteReminderController) Send() {
	claims, err := c.platformClaims()
	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 {
		Title          string `json:"title"`
		Content        string `json:"content"`
		TargetType     string `json:"target_type"` // platform, tenant_all, role, tenant
		TargetRoleID   uint64 `json:"target_role_id"`
		TargetTenantID uint64 `json:"target_tenant_id"`
	}
	if err := json.Unmarshal(raw, &p); err != nil {
		c.jsonErr(400, 400, "参数错误")
		return
	}
	p.Title = strings.TrimSpace(p.Title)
	p.Content = strings.TrimSpace(p.Content)
	if p.Title == "" || p.Content == "" {
		c.jsonErr(400, 400, "标题与内容不能为空")
		return
	}
	if p.TargetType == "" {
		c.jsonErr(400, 400, "发送目标类型不能为空")
		return
	}

	err = services.SendSiteReminder(p.Title, p.Content, uint64(claims.UserID), "platform", p.TargetType, p.TargetRoleID, p.TargetTenantID)
	if err != nil {
		c.jsonErr(500, 500, "发送失败: "+err.Error())
		return
	}

	c.Data["json"] = map[string]interface{}{"code": 200, "msg": "发送成功"}
	_ = c.ServeJSON()
}

// GetMyList GET /platform/sitereminder/myList
func (c *PlatformSiteReminderController) GetMyList() {
	claims, err := c.platformClaims()
	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), "platform", 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 /platform/sitereminder/read
func (c *PlatformSiteReminderController) MarkRead() {
	claims, err := c.platformClaims()
	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), "platform")
	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 /platform/sitereminder/readall
func (c *PlatformSiteReminderController) MarkAllRead() {
	claims, err := c.platformClaims()
	if err != nil {
		c.jsonErr(401, 401, err.Error())
		return
	}
	err = services.MarkAllRemindersRead(uint64(claims.UserID), "platform")
	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 /platform/sitereminder/delete
func (c *PlatformSiteReminderController) Delete() {
	claims, err := c.platformClaims()
	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), "platform")
	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()
}

// GetSentList GET /platform/sitereminder/sentList
func (c *PlatformSiteReminderController) GetSentList() {
	claims, err := c.platformClaims()
	if err != nil {
		c.jsonErr(401, 401, err.Error())
		return
	}
	page, _ := c.GetInt("page", 1)
	pageSize, _ := c.GetInt("pageSize", 10)

	list, total, err := services.ListSentReminders(uint64(claims.UserID), page, pageSize)
	if err != nil {
		c.jsonErr(500, 500, "获取发送列表失败: "+err.Error())
		return
	}

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

// UpdateSent POST /platform/sitereminder/updateSent
func (c *PlatformSiteReminderController) UpdateSent() {
	if _, err := c.platformClaims(); 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 {
		BatchID        string `json:"batch_id"`
		Title          string `json:"title"`
		Content        string `json:"content"`
		TargetType     string `json:"target_type"`
		TargetRoleID   uint64 `json:"target_role_id"`
		TargetTenantID uint64 `json:"target_tenant_id"`
	}
	if err := json.Unmarshal(raw, &p); err != nil {
		c.jsonErr(400, 400, "参数错误")
		return
	}
	p.Title = strings.TrimSpace(p.Title)
	p.Content = strings.TrimSpace(p.Content)
	if p.BatchID == "" || p.Title == "" || p.Content == "" {
		c.jsonErr(400, 400, "批次号、标题与内容不能为空")
		return
	}
	if p.TargetType == "" {
		c.jsonErr(400, 400, "发送目标类型不能为空")
		return
	}

	err = services.UpdateSentReminder(p.BatchID, p.Title, p.Content, p.TargetType, p.TargetRoleID, p.TargetTenantID)
	if err != nil {
		c.jsonErr(500, 500, "修改失败: "+err.Error())
		return
	}
	c.Data["json"] = map[string]interface{}{"code": 200, "msg": "修改成功"}
	_ = c.ServeJSON()
}

// DeleteSentBatch POST /platform/sitereminder/deleteSent
func (c *PlatformSiteReminderController) DeleteSentBatch() {
	if _, err := c.platformClaims(); 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 {
		BatchID string `json:"batch_id"`
	}
	if err := json.Unmarshal(raw, &p); err != nil {
		c.jsonErr(400, 400, "参数错误")
		return
	}
	if p.BatchID == "" {
		c.jsonErr(400, 400, "批次号不能为空")
		return
	}

	err = services.DeleteSentReminderBatch(p.BatchID)
	if err != nil {
		c.jsonErr(500, 500, "删除失败: "+err.Error())
		return
	}
	c.Data["json"] = map[string]interface{}{"code": 200, "msg": "删除成功"}
	_ = c.ServeJSON()
}