package record

import (
	"path/filepath"
	"strconv"
	"time"

	"go.uber.org/zap"
	. "m7s.live/engine/v4"
)

type Recorder struct {
	Subscriber
	SkipTS  uint32
	*Record `json:"-" yaml:"-"`
	newFile bool // 创建了新的文件
	append  bool // 是否追加模式
}

func (r *Recorder) start() {
	RecordPluginConfig.recordings.Store(r.ID, r)
	r.PlayRaw()
	RecordPluginConfig.recordings.Delete(r.ID)
}

func (r *Recorder) cut(absTime uint32) {
	if ts := absTime - r.SkipTS; time.Duration(ts)*time.Millisecond >= r.Fragment {
		r.SkipTS = absTime
		r.newFile = true
	}
}

func (r *Recorder) OnEvent(event any) {
	switch v := event.(type) {
	case ISubscriber:
		filename := strconv.FormatInt(time.Now().Unix(), 10) + r.Ext
		if r.Fragment == 0 {
			filename = r.Stream.Path + r.Ext
		} else {
			filename = filepath.Join(r.Stream.Path, filename)
		}
		if file, err := r.CreateFileFn(filename, r.append); err == nil {
			r.SetIO(file)
		} else {
			r.Error("create file failed", zap.Error(err))
			r.Stop()
		}
	case AudioFrame:
		// 纯音频流的情况下需要切割文件
		if r.Fragment > 0 && r.VideoReader == nil {
			r.cut(v.AbsTime)
		}
	case VideoFrame:
		if r.Fragment > 0 && v.IFrame {
			r.cut(v.AbsTime)
		}
	default:
		r.Subscriber.OnEvent(event)
	}
}