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package dmmsg
/*
Decoder of raw danmaku messages.
*/
import (
"fmt"
)
type RawDanMuMessage = BaseRawMessage[[]interface{}, interface{}]
type DanMuMessage struct {
Content string
SourceUser struct {
Nickname string
UID int64
}
}
func (dm DanMuMessage) String() string {
return fmt.Sprintf("(user: %v, uid: %v) %v",
dm.SourceUser.Nickname, dm.SourceUser.UID, dm.Content)
}
const kInvalidDanmakuJson = "invalid danmaku JSON document"
func ParseDanmakuMessage(body RawDanMuMessage) (dmm DanMuMessage, err error) {
if len(body.Info) != 16 {
err = fmt.Errorf("%s: \"info\" length != 16", kInvalidDanmakuJson)
return
}
dmm.Content, err = castValue[string](body.Info[1])
if err != nil {
return
}
userInfo, err := castValue[[]interface{}](body.Info[2])
var ok bool
uid, ok := userInfo[0].(float64)
if !ok {
err = fmt.Errorf("%s: uid is not a float64: %v", kInvalidDanmakuJson, userInfo[0])
return
}
dmm.SourceUser.UID = int64(uid)
dmm.SourceUser.Nickname, ok = userInfo[1].(string)
if !ok {
err = fmt.Errorf("%s: nickname is not a string: %v", kInvalidDanmakuJson, userInfo[1])
return
}
return
}
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