package message

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

// VideoMessage 视频消息
type VideoMessage struct {
	Type string           `json:"type"`
	Data VideoMessageData `json:"data"`
}

type VideoMessageData struct {
	File       string `json:"file"`
	Name       string `json:"name,omitempty"`
	Thumb      string `json:"thumb,omitempty"`
	URL        string `json:"url,omitempty"`
	Path       string `json:"path,omitempty"`
	FileID     string `json:"file_id,omitempty"`
	FileSize   string `json:"file_size,omitempty"`
	FileUnique string `json:"file_unique,omitempty"`
}

func init() {
	RegisterMessageType(TypeVideo, func() CQMessage {
		return NewVideoMessage()
	})
}

func NewVideoMessage() *VideoMessage {
	return &VideoMessage{Type: TypeVideo}
}

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

func (msg *VideoMessage) ToCQString() string {
	if msg.Data.Thumb != "" {
		return fmt.Sprintf("[CQ:video,file=%s,thumb=%s]", msg.Data.File, msg.Data.Thumb)
	}
	return fmt.Sprintf("[CQ:video,file=%s]", msg.Data.File)
}

func (msg *VideoMessage) ParseMessage(data string) error {
	re := regexp.MustCompile(`\[CQ:video,file=(.*?)(?:,thumb=(.*?))?\]`)
	matches := re.FindStringSubmatch(data)
	if len(matches) < 2 {
		return fmt.Errorf("视频消息格式不正确")
	}
	msg.Data.File = matches[1]
	if len(matches) > 2 {
		msg.Data.Thumb = matches[2]
	}
	return nil
}