[+] Step-by-step buttons

src/lib/server/songs.ts

@@ -140,7 +140,7 @@ export const getSongUrl = async (id: number | string) => {
 // /////////////////////////////////////////////////////////////////////////////
 // API for Song Preparation
 
-export interface ProgressItem { task: string, progress: number }
+export interface ProgressItem { id: string, task: string, progress: number }
 export interface SongProcessState { items: ProgressItem[], status: 'running' | 'done' | 'error' }
 
 const songProcessingStatus = new Map<number, SongProcessState>()
@@ -152,20 +152,20 @@ export const prepareSong = async (songId: number) => {
     const state: SongProcessState = { items: [], status: 'running' }
     songProcessingStatus.set(songId, state)
 
-    const addTask = (task: string) => ({ task, progress: 0 }).also(it => state.items.push(it))
+    const addTask = (id: string, task: string) => ({ id, task, progress: 0 }).also(it => state.items.push(it))
     try {
         // 1. Get Lyrics
-        const taskLyrics = addTask('从网易云获取歌词')
+        const taskLyrics = addTask('lyrics', '从网易云获取歌词')
         const raw = await getLyricsRaw(songId)
         taskLyrics.progress = 1
         
         if (raw.lang !== 'jpn') {
-             addTask('错误: 不是日语歌曲').progress = -1
+             addTask('error', '错误: 不是日语歌曲').progress = -1
              return state.status = 'error'
         }
 
         // 2. AI Process
-        const taskAI = addTask('AI 标注歌词读音')
+        const taskAI = addTask('ai', 'AI 标注歌词读音')
         
         // Check cache
         if (await checkLyricsProcessed(songId)) taskAI.progress = 1
@@ -176,12 +176,12 @@ export const prepareSong = async (songId: number) => {
         }
 
         // 3. Audio
-        const taskAudio = addTask('从网易云获取音乐')
+        const taskAudio = addTask('music', '从网易云获取音乐')
         await getSongUrl(songId)
         taskAudio.progress = 1
 
         // 4. Source Separation
-        const taskSeparation = addTask('AI 人声分离')
+        const taskSeparation = addTask('separation', 'AI 人声分离')
         const inputPath = path.join(CACHE_DIR, `${songId}/exhigh.mp3`)
         const outputDir = path.join(CACHE_DIR, `${songId}`)
 
@@ -189,14 +189,14 @@ export const prepareSong = async (songId: number) => {
             await separateSong(inputPath, outputDir)
             taskSeparation.progress = 1
         } catch (e: any) {
-            addTask(`错误: ${e.message}`).progress = -1
+            addTask('error', `错误: ${e.message}`).progress = -1
             // Don't fail the whole process, just this step
         }
         
         state.status = 'done'
 
     } catch (e) {
-        addTask(`错误: ${eToString(e)}`).progress = -1
+        addTask('error', `错误: ${eToString(e)}`).progress = -1
         state.status = 'error'
     }
 }

src/routes/song/[id]/+page.svelte

@@ -11,10 +11,17 @@
   const t = getI18n().song.mode
 
   let { data } = $props()
+  let taskStatus = $state({
+    lyrics: false,
+    ai: false,
+    music: false,
+    separation: false
+  })
+
   let modes = $derived([
-    { icon: "i-material-symbols:keyboard-rounded", label: t.typing, url: `/song/${data.song.id}/play` },
+    { icon: "i-material-symbols:keyboard-rounded", label: t.typing, url: `/song/${data.song.id}/play`, disabled: !taskStatus.lyrics || !taskStatus.ai },
-    { icon: "i-material-symbols:music-note-rounded", label: t.music, url: `/song/${data.song.id}/play?music=true` },
+    { icon: "i-material-symbols:music-note-rounded", label: t.music, url: `/song/${data.song.id}/play?music=true`, disabled: !taskStatus.music },
-    { icon: "i-material-symbols:mic-rounded", label: t.karaoke, url: `/song/${data.song.id}/karaoke` },
+    { icon: "i-material-symbols:mic-rounded", label: t.karaoke, url: `/song/${data.song.id}/karaoke`, disabled: !taskStatus.separation },
   ])
 
   let loadStatus = $state<"idle" | "loading" | "done">("idle")
@@ -33,6 +40,15 @@
       const state = res.status
       
       if (state && state.items) {
+          // Update task status
+          for (const item of state.items) {
+            if (item.progress !== 1) continue
+            if (item.id === 'lyrics') taskStatus.lyrics = true
+            if (item.id === 'ai') taskStatus.ai = true
+            if (item.id === 'music') taskStatus.music = true
+            if (item.id === 'separation') taskStatus.separation = true
+          }
+
           progressItems = state.items.map((item: any) => ({
               title: item.task + (item.progress > 0 && item.progress < 1 ? ` (${Math.round(item.progress * 100)}%)` : ''),
               icon: item.progress === 1 ? 'i-material-symbols:check text-green-500' : 
@@ -59,10 +75,8 @@
 
 <ProgressList percentage={progressPercentage} items={progressItems} />
 
-{#if loadStatus === "done"}
+<div class="hbox gap-4 p-16px flex-wrap">
-  <div class="hbox gap-4 p-16px flex-wrap">
+  {#each modes as mode}
-    {#each modes as mode}
+    <Button big icon={mode.icon} onclick={() => goto(mode.url)} disabled={mode.disabled} class="!w-auto !min-w-[calc(50%-8px)] grow disabled:opacity-50 disabled:cursor-not-allowed">{mode.label}</Button>
-      <Button big icon={mode.icon} onclick={() => goto(mode.url)} class="!w-auto !min-w-[calc(50%-8px)] grow">{mode.label}</Button>
+  {/each}
-    {/each}
+</div>
-  </div>
-{/if}