fix(lyricParser): 修复了一些 alignLyricLines 的小问题 (#996)

* fix(lyricParser): alignLyricLines 意外修改入参

听取 AI 建议，深拷贝 words，避免修改 baseLine.words 时意外修改入参；同时显式增加 Readonly 提示

* feat(lyricParser): alignLyricLines 可以假设已经排好序来跳过排序

* fix(lyricParser): alignLyricLines 的匹配时间现在会考虑 isFinite

* fix(lyricParser): 修改 alignLyricLines 的跳过排序步骤入参名

fix(lyricParser): 使用 cloneDeep 代替手动展开

---------

Co-authored-by: apoint123 <108002475+apoint123@users.noreply.github.com>

Author: MoYingJi

src/utils/lyric/lyricParser.ts

@@ -302,19 +302,22 @@ export const alignLyrics = (
 /**
  * 对齐歌词的翻译和音译
  * 根据开始时间将同一时间的多行歌词分为一组，第一行作为主句，第二行作为翻译，第三行作为音译
- * @param lyrics 未设置翻译和音译的歌词数据
+ * @param lyrics 未设置翻译和音译的歌词数据 (Readonly)
  * @param endTime 对齐时如何处理附加行的结束时间（忽略、匹配、设为最大值）
  * @param maxTimeDiff 允许匹配的最大时间差（单位：毫秒），超过该时间差的行将不会被视为同一行
- * @returns 对齐后的歌词数据
+ * @param skipSort 跳过排序步骤以只对齐相邻行
+ * @returns 对齐后的歌词数据 (新副本)
  */
 export const alignLyricLines = (
-  lyrics: LyricLine[],
+  lyrics: Readonly<LyricLine[]>,
   {
     endTime = "set",
     maxTimeDiff = 0, // 默认严格匹配
+    skipSort = false,
   }: Partial<{
     endTime: "ignore" | "match" | "set";
     maxTimeDiff: number;
+    skipSort: boolean;
   }> = {},
 ): LyricLine[] => {
   if (!lyrics.length) return [];
@@ -330,15 +333,19 @@ export const alignLyricLines = (
   const isTimeMatch = (baseLine: LyricLine | undefined, addLine: LyricLine | undefined) => {
     if (!baseLine || !addLine) return false;
     const timeDiff = Math.abs(toStartTime(baseLine) - toStartTime(addLine));
+    if (!Number.isFinite(timeDiff)) return false;
     if (timeDiff > maxTimeDiff) return false;
     if (endTime === "match") {
       const endTimeDiff = Math.abs(toEndTime(baseLine) - toEndTime(addLine));
+      if (!Number.isFinite(endTimeDiff)) return false;
       if (endTimeDiff > maxTimeDiff) return false;
     }
     return true;
   };
   // 按开始时间分组
-  const sorted = [...lyrics].sort((a, b) => toStartTime(a) - toStartTime(b));
+  const sorted = skipSort
+    ? lyrics
+    : [...lyrics].sort((a, b) => toStartTime(a) - toStartTime(b));
   const groups: LyricLine[][] = [];
   for (const line of sorted) {
     const last = groups[groups.length - 1]?.[0];
@@ -372,7 +379,8 @@ export const alignLyricLines = (
   };
   // 组装：第 1 行主句；第 2 行翻译；第 3 行音译；其余行舍去
   const aligned = groups.map((group) => {
-    const base = { ...group[0] } as LyricLine;
+    // 使用 cloneDeep 保证数据不可变性
+    const base = cloneDeep(group[0]) as LyricLine;
     const tran = group[1];
     const roma = group[2];
     mergeAddLine(base, tran, "translatedLyric");