package service

import (
	"encoding/json"

	"github.com/flipped-aurora/gin-vue-admin/server/global"
	"github.com/flipped-aurora/gin-vue-admin/server/plugin/wechat-integration/model"
	"github.com/silenceper/wechat/v2/officialaccount/message"
)

type MpMessageService struct{}

// SaveMessage 保存消息记录
func (m *MpMessageService) SaveMessage(msgType, openid, inMsgID string, content interface{}) error {
	contentBytes, err := json.Marshal(content)
	if err != nil {
		global.GVA_LOG.Error("序列化消息内容失败: " + err.Error())
		return err
	}

	contentStr := string(contentBytes)
	msg := model.MpMessage{
		Type:    msgType,
		OpenID:  openid,
		InMsgID: &inMsgID,
		Content: &contentStr,
	}

	err = global.GVA_DB.Create(&msg).Error
	if err != nil {
		global.GVA_LOG.Error("保存消息记录失败: " + err.Error())
		return err
	}

	return nil
}

// GetMessageList 获取消息列表
func (m *MpMessageService) GetMessageList(page, pageSize int, msgType, openid string) ([]model.MpMessage, int64, error) {
	var messages []model.MpMessage
	var total int64

	db := global.GVA_DB.Model(&model.MpMessage{})

	// 根据消息类型筛选
	if msgType != "" {
		db = db.Where("type = ?", msgType)
	}

	// 根据用户筛选
	if openid != "" {
		db = db.Where("openid = ?", openid)
	}

	// 获取总数
	err := db.Count(&total).Error
	if err != nil {
		return nil, 0, err
	}

	// 分页查询
	offset := (page - 1) * pageSize
	err = db.Offset(offset).Limit(pageSize).Order("created_at desc").Find(&messages).Error
	if err != nil {
		return nil, 0, err
	}

	return messages, total, nil
}

// SendTextMessage 发送文本消息
func (m *MpMessageService) SendTextMessage(openid, content string) error {
	mpUserService := &MpUserService{}
	oa, err := mpUserService.GetOfficialAccount()
	if err != nil {
		return err
	}

	msg := &message.CustomerMessage{
		ToUser:  openid,
		Msgtype: message.MsgTypeText,
		Text: &message.MediaText{
			Content: content,
		},
	}

	err = oa.GetCustomerMessageManager().Send(msg)
	if err != nil {
		global.GVA_LOG.Error("发送文本消息失败: " + err.Error())
		return err
	}

	// 保存发送记录
	err = m.SaveMessage("text", openid, "", map[string]interface{}{
		"content": content,
		"type":    "send",
	})
	if err != nil {
		global.GVA_LOG.Error("保存发送消息记录失败: " + err.Error())
	}

	return nil
}

// SendImageMessage 发送图片消息
func (m *MpMessageService) SendImageMessage(openid, mediaID string) error {
	mpUserService := &MpUserService{}
	oa, err := mpUserService.GetOfficialAccount()
	if err != nil {
		return err
	}

	msg := &message.CustomerMessage{
		ToUser:  openid,
		Msgtype: message.MsgTypeImage,
		Image: &message.MediaResource{
			MediaID: mediaID,
		},
	}

	err = oa.GetCustomerMessageManager().Send(msg)
	if err != nil {
		global.GVA_LOG.Error("发送图片消息失败: " + err.Error())
		return err
	}

	// 保存发送记录
	err = m.SaveMessage("image", openid, "", map[string]interface{}{
		"media_id": mediaID,
		"type":     "send",
	})
	if err != nil {
		global.GVA_LOG.Error("保存发送消息记录失败: " + err.Error())
	}

	return nil
}

// ProcessTextMessage 处理文本消息
func (m *MpMessageService) ProcessTextMessage(openid, content, msgID string) error {
	// 保存接收到的消息
	err := m.SaveMessage("text", openid, msgID, map[string]interface{}{
		"content": content,
		"type":    "receive",
	})
	if err != nil {
		return err
	}

	// 检查是否有自动回复
	autoReplyService := &MpAutoReplyService{}
	reply, err := autoReplyService.GetKeywordReply(content)
	if err == nil && reply != nil {
		// 发送自动回复
		if reply.ResponseMessageType == "text" && reply.ResponseContent != nil {
			err = m.SendTextMessage(openid, *reply.ResponseContent)
			if err != nil {
				global.GVA_LOG.Error("发送自动回复失败: " + err.Error())
			}
		}
	}

	return nil
}

// ProcessEventMessage 处理事件消息
func (m *MpMessageService) ProcessEventMessage(openid, event, eventKey, msgID string) error {
	// 保存事件消息
	err := m.SaveMessage("event", openid, msgID, map[string]interface{}{
		"event":     event,
		"event_key": eventKey,
		"type":      "receive",
	})
	if err != nil {
		return err
	}

	mpUserService := &MpUserService{}

	switch event {
	case "subscribe":
		// 处理关注事件
		err = mpUserService.SubscribeUser(openid)
		if err != nil {
			global.GVA_LOG.Error("处理关注事件失败: " + err.Error())
			return err
		}

		// 发送关注回复
		autoReplyService := &MpAutoReplyService{}
		reply, err := autoReplyService.GetSubscribeReply()
		if err == nil && reply != nil && reply.ResponseContent != nil {
			err = m.SendTextMessage(openid, *reply.ResponseContent)
			if err != nil {
				global.GVA_LOG.Error("发送关注回复失败: " + err.Error())
			}
		}

	case "unsubscribe":
		// 处理取消关注事件
		err = mpUserService.UnsubscribeUser(openid)
		if err != nil {
			global.GVA_LOG.Error("处理取消关注事件失败: " + err.Error())
			return err
		}

	case "CLICK":
		// 处理菜单点击事件
		menuService := &MpMenuService{}
		err = menuService.ProcessMenuClick(openid, eventKey)
		if err != nil {
			global.GVA_LOG.Error("处理菜单点击事件失败: " + err.Error())
		}
	}

	return nil
}

// GetMessageByID 根据ID获取消息
func (m *MpMessageService) GetMessageByID(id uint) (*model.MpMessage, error) {
	var message model.MpMessage
	err := global.GVA_DB.Where("id = ?", id).First(&message).Error
	if err != nil {
		return nil, err
	}
	return &message, nil
}

// DeleteMessage 删除消息
func (m *MpMessageService) DeleteMessage(id uint) error {
	err := global.GVA_DB.Delete(&model.MpMessage{}, id).Error
	if err != nil {
		global.GVA_LOG.Error("删除消息失败: " + err.Error())
		return err
	}
	return nil
}