commit 3d25058496a7014bd785dc8c047d75244f3818fd
Author: CDN18 <cardinal@codeword.info>
Date:   Sun Aug 11 09:50:31 2024 +0800

    feat: sync

diff --git a/go.mod b/go.mod
new file mode 100644
index 0000000..e7dab73
--- /dev/null
+++ b/go.mod
@@ -0,0 +1,3 @@
+module lrc-cli
+
+go 1.22.6
diff --git a/main.go b/main.go
new file mode 100644
index 0000000..f4b22ba
--- /dev/null
+++ b/main.go
@@ -0,0 +1,23 @@
+package main
+
+import (
+	"fmt"
+	"os"
+)
+
+func main() {
+	// parse args
+	if len(os.Args) < 2 {
+		fmt.Println(USAGE)
+		return
+	}
+	switch os.Args[1] {
+	case "sync":
+		syncLyrics(os.Args[2:])
+	case "help":
+		fmt.Println(USAGE)
+	default:
+		fmt.Println("Unknown command")
+		fmt.Println(USAGE)
+	}
+}
diff --git a/model.go b/model.go
new file mode 100644
index 0000000..ae4a6f2
--- /dev/null
+++ b/model.go
@@ -0,0 +1,14 @@
+package main
+
+type Lyrics struct {
+	Metadata map[string]string
+	Timeline []string
+	Content  []string
+}
+
+const USAGE = `Usage: lyc-cli [command] [options]
+Commands:
+  sync	Synchronize timeline of two lyrics files
+  help	Show help`
+
+const SYNC_USAGE = `Usage: lyc-cli sync <source> <target>`
diff --git a/util.go b/util.go
new file mode 100644
index 0000000..88aa0bf
--- /dev/null
+++ b/util.go
@@ -0,0 +1,131 @@
+package main
+
+import (
+	"bufio"
+	"fmt"
+	"os"
+	"regexp"
+	"strings"
+)
+
+func parseLyrics(filePath string) (Lyrics, error) {
+	file, err := os.Open(filePath)
+	if err != nil {
+		return Lyrics{}, err
+	}
+	defer file.Close()
+
+	scanner := bufio.NewScanner(file)
+	lyrics := Lyrics{
+		Metadata: make(map[string]string),
+	}
+	timeLineRegex := regexp.MustCompile(`\[((\d+:)?\d+:\d+(\.\d+)?)\]`)
+	tagRegex := regexp.MustCompile(`\[(\w+):(.+)\]`)
+
+	for scanner.Scan() {
+		line := scanner.Text()
+		if strings.HasPrefix(line, "[") && strings.Contains(line, "]") {
+			if timeLineRegex.MatchString(line) {
+				// Timeline Tag
+				time := timeLineRegex.FindString(line)
+				lyrics.Timeline = append(lyrics.Timeline, time)
+				// Content
+				content := timeLineRegex.ReplaceAllString(line, "")
+				lyrics.Content = append(lyrics.Content, strings.TrimSpace(content))
+			} else {
+				// Metadata
+				matches := tagRegex.FindStringSubmatch(line)
+				if len(matches) == 3 {
+					lyrics.Metadata[matches[1]] = strings.TrimSpace(matches[2])
+				}
+			}
+		}
+	}
+
+	if err := scanner.Err(); err != nil {
+		return Lyrics{}, err
+	}
+
+	return lyrics, nil
+}
+
+func syncLyrics(args []string) {
+	if len(args) < 2 {
+		fmt.Println(SYNC_USAGE)
+		return
+	}
+
+	sourceFile := args[0]
+	targetFile := args[1]
+
+	sourceLyrics, err := parseLyrics(sourceFile)
+	if err != nil {
+		fmt.Println("Error parsing source lyrics file:", err)
+		return
+	}
+
+	targetLyrics, err := parseLyrics(targetFile)
+	if err != nil {
+		fmt.Println("Error parsing target lyrics file:", err)
+		return
+	}
+
+	// Sync timeline
+	if len(sourceLyrics.Timeline) != len(targetLyrics.Timeline) {
+		fmt.Println("Warning: Timeline length mismatch")
+		return
+	}
+	minLength := len(sourceLyrics.Timeline)
+	if len(targetLyrics.Timeline) < minLength {
+		minLength = len(targetLyrics.Timeline)
+	}
+
+	for i := 0; i < minLength; i++ {
+		targetLyrics.Timeline[i] = sourceLyrics.Timeline[i]
+	}
+
+	// save to target, name it as "<filename>_synced.lrc"
+	targetFileName := strings.TrimSuffix(targetFile, ".lrc") + "_synced.lrc"
+	err = saveLyrics(targetFileName, targetLyrics)
+	if err != nil {
+		fmt.Println("Error saving synced lyrics file:", err)
+		return
+	}
+}
+
+// func printLyricsInfo(lyrics Lyrics) {
+// 	fmt.Println("Metadata:")
+// 	for key, value := range lyrics.Metadata {
+// 		fmt.Printf("%s: %s\n", key, value)
+// 	}
+
+// 	fmt.Println("\nTimeline:")
+// 	for _, time := range lyrics.Timeline {
+// 		fmt.Println(time)
+// 	}
+
+// 	fmt.Println("\nLyrics Content:")
+// 	for _, content := range lyrics.Content {
+// 		fmt.Println(content)
+// 	}
+// }
+
+func saveLyrics(filePath string, lyrics Lyrics) error {
+	file, err := os.Create(filePath)
+	if err != nil {
+		return err
+	}
+	defer file.Close()
+
+	// Write metadata
+	for key, value := range lyrics.Metadata {
+		fmt.Fprintf(file, "[%s: %s]\n", key, value)
+	}
+
+	// Write timeline and content
+	for i := 0; i < len(lyrics.Timeline); i++ {
+		fmt.Fprintf(file, "%s %s\n", lyrics.Timeline[i], lyrics.Content[i])
+	}
+
+	return nil
+}