package streamer

import (
	"fmt"
	"live-streamer/config"
	"log"
)

func buildFFmpegArgs(videoItem config.InputItem) []string {
	videoPath := videoItem.Path

	args := []string{"-re"}
	if videoItem.Start != "" {
		args = append(args, "-ss", videoItem.Start)
	}

	if videoItem.End != "" {
		args = append(args, "-to", videoItem.End)
	}

	args = append(args,
		"-i", videoPath,
		"-c:v", config.GlobalConfig.Play.VideoCodec,
		"-preset", config.GlobalConfig.Play.Preset,
		"-crf", fmt.Sprintf("%d", config.GlobalConfig.Play.CRF),
		"-maxrate", config.GlobalConfig.Play.MaxRate,
		"-bufsize", config.GlobalConfig.Play.BufSize,
		"-vf", fmt.Sprintf("scale=%s", config.GlobalConfig.Play.Scale),
		"-r", fmt.Sprintf("%d", config.GlobalConfig.Play.FrameRate),
		"-c:a", config.GlobalConfig.Play.AudioCodec,
		"-b:a", config.GlobalConfig.Play.AudioBitrate,
		"-ar", fmt.Sprintf("%d", config.GlobalConfig.Play.AudioSampleRate),
		"-f", config.GlobalConfig.Play.OutputFormat,
	)

	if len(config.GlobalConfig.Play.CustomArgs) != 0 {
		args = append(args, config.GlobalConfig.Play.CustomArgs...)
	}

	args = append(args, fmt.Sprintf("%s/%s", config.GlobalConfig.Output.RTMPServer, config.GlobalConfig.Output.StreamKey))

	log.Println("ffmpeg args: ", args)

	return args
}