package audio

import (
	"bytes"
	"context"
	"os/exec"
	"strconv"
)

// GetAudioDuration returns the duration of an audio file in seconds.
func GetAudioDuration(ctx context.Context, filename string) (float64, error) {
	// ffprobe -v error -show_entries format=duration -of default=noprint_wrappers=1:nokey=1 {{input}}
	c := exec.CommandContext(ctx, "ffprobe", "-v", "error", "-show_entries", "format=duration", "-of", "default=noprint_wrappers=1:nokey=1", filename)
	output, err := c.Output()
	if err != nil {
		return 0, err
	}
	return strconv.ParseFloat(string(bytes.TrimSpace(output)), 64)
}