package message

import (
	"encoding/json"
	"fmt"
	"regexp"
)

// ContactMessage 推荐好友/群消息
type ContactMessage struct {
	Type string             `json:"type"`
	Data ContactMessageData `json:"data"`
}

type ContactMessageData struct {
	Type string `json:"type"` // qq或group
	ID   string `json:"id"`   // QQ号或群号
}

func init() {
	RegisterMessageType(TypeContact, func() CQMessage {
		return &ContactMessage{Type: TypeContact}
	})
}

func (msg *ContactMessage) SetData(data json.RawMessage) error {
	return json.Unmarshal(data, &msg.Data)
}

func (msg *ContactMessage) ToCQString() string {
	return fmt.Sprintf("[CQ:contact,type=%s,id=%s]", msg.Data.Type, msg.Data.ID)
}

func (msg *ContactMessage) ParseMessage(data string) error {
	re := regexp.MustCompile(`\[CQ:contact,type=(qq|group),id=(\d+)\]`)
	matches := re.FindStringSubmatch(data)
	if len(matches) < 3 {
		return fmt.Errorf("推荐好友/群消息格式不正确")
	}
	msg.Data.Type = matches[1]
	msg.Data.ID = matches[2]
	return nil
}