package sync

import (
"fmt"
"path/filepath"
"strings"
)

// SyncLyrics synchronizes the timeline of a source lyrics file with a target lyrics file
func SyncLyrics(sourceFile, targetFile string) error {
	sourceFmt := strings.TrimPrefix(filepath.Ext(sourceFile), ".")
	targetFmt := strings.TrimPrefix(filepath.Ext(targetFile), ".")
	
	// Check for supported format combinations
	if sourceFmt == "lrc" && targetFmt == "lrc" {
		return syncLRCFiles(sourceFile, targetFile)
	} else if sourceFmt == "srt" && targetFmt == "srt" {
		return syncSRTFiles(sourceFile, targetFile)
	} else if sourceFmt == "vtt" && targetFmt == "vtt" {
		return syncVTTFiles(sourceFile, targetFile)
	} else if sourceFmt == "ass" && targetFmt == "ass" {
		return syncASSFiles(sourceFile, targetFile)
	} else {
		return fmt.Errorf("sync only supports files of the same format (lrc-to-lrc, srt-to-srt, vtt-to-vtt, or ass-to-ass)")
	}
}