refactor: isolate playback and upload use cases

apps/mobile/src/player/controller.ts

@@ -1,6 +1,11 @@
 import NetInfo from '@react-native-community/netinfo';
 import {
   EventBuffer,
+  WaveCoordinator,
+  EARLY_SKIP_MS,
+  type WaveInfo,
+  type WaveOutcome,
+  type WaveFeedback,
   PlayAttempt,
   normalizeGain,
   unwrap,
@@ -24,12 +29,7 @@ import { eventId } from './eventId';
 
 export { offlineWave };
 
-export interface WaveInfo {
-  sessionId: string;
-  activity: string | null;
-  mood: string | null;
-  fallback: boolean;
-}
+export type { WaveInfo } from '@pipu/core';
 
 export interface PlayerState {
   ready: boolean;
@@ -44,10 +44,6 @@ export interface PlayerState {
   wave: WaveInfo | null;
 }
 
-type WaveOutcome = 'complete' | 'skip' | 'skip_early' | 'like' | 'dislike';
-
-const WAVE_REFILL_AT = 2;
-const EARLY_SKIP_MS = 30_000;
 const SAVE_EVERY_MS = 10_000;
 
 const playable = (t: Track) => t.available && (!!t.stream_url || downloads.isDownloaded(t.id));
@@ -84,8 +80,13 @@ class Controller {
   private attempt: PlayAttempt | null = null;
   private lastPositionMs = 0;
   private lastSave = 0;
-  private waveFeedback: { track_id: string; outcome: WaveOutcome }[] = [];
-  private waveLoading = false;
+  private readonly wavePolicy = new WaveCoordinator({
+    next: async (id: string, feedback: WaveFeedback[]) => unwrap(
+      await this.session!.client.POST('/api/v1/wave/sessions/{id}/next', {
+        params: { path: { id } }, body: { feedback },
+      }),
+    ),
+  });
   private neutralSwitch = false; // следующая смена трека — из-за нового контекста волны
   private setupDone: Promise<void> | null = null;
   private listeners = new Set<() => void>();
@@ -308,18 +309,22 @@ class Controller {
     if (!this.session) return;
     await this.setup();
     this.leaveWave();
+    const version = this.wavePolicy.version;
     let res;
     try {
       res = unwrap(await this.session.client.POST('/api/v1/wave/sessions', { body: { activity, mood } }));
     } catch (e) {
+      if (!this.wavePolicy.isCurrent(version)) return;
       // Нет связи с сервером — офлайн-волна из скачанного.
       const local = offlineWave(downloads.downloaded());
       if (!local.length) throw e;
       return this.playList(local, 0, { type: 'collection', id: 'downloads' });
     }
+    if (!this.wavePolicy.isCurrent(version)) return;
     const tracks = res.tracks.filter(playable);
     if (!tracks.length) return;
     this.finishAttempt(this.lastPositionMs / 1000);
+    this.wavePolicy.activate(res.session_id);
     this.update({
       queue: tracks, index: 0, track: tracks[0] ?? null, context: { type: 'wave', id: res.session_id },
       wave: { sessionId: res.session_id, activity: res.activity, mood: res.mood, fallback: res.fallback },
@@ -332,13 +337,16 @@ class Controller {
   async setWaveContext(activity: string | null, mood: string | null) {
     const wave = this.state.wave;
     if (!wave || !this.session) return this.startWave(activity, mood);
+    const version = this.wavePolicy.changeContext(wave.sessionId);
     const res = unwrap(
       await this.session.client.PATCH('/api/v1/wave/sessions/{id}', {
         params: { path: { id: wave.sessionId } },
         body: { activity, mood },
       }),
     );
-    await this.replaceUpcoming(res.tracks);
+    if (!this.wavePolicy.isCurrent(version)) return;
+    await this.replaceUpcoming(res.tracks, () => this.wavePolicy.isCurrent(version));
+    if (!this.wavePolicy.isCurrent(version)) return;
     this.update({ wave: { ...wave, activity: res.activity, mood: res.mood, fallback: res.fallback } });
     // Новый контекст звучит сразу; прерванный трек — не скип для волны (как в вебе).
     if (res.tracks.some(playable)) {
@@ -351,8 +359,8 @@ class Controller {
 
   private leaveWave() {
     const wave = this.state.wave;
+    this.wavePolicy.activate(null);
     if (!wave) return;
-    this.waveFeedback = [];
     this.update({ wave: null });
     void this.session?.client
       .DELETE('/api/v1/wave/sessions/{id}', { params: { path: { id: wave.sessionId } } })
@@ -360,46 +368,36 @@ class Controller {
   }
 
   private noteWave(trackId: string, outcome: WaveOutcome) {
-    if (this.state.wave) this.waveFeedback.push({ track_id: trackId, outcome });
+    this.wavePolicy.note(trackId, outcome);
   }
 
   /** Убрать не начатые треки и поставить новые (после реакции или смены контекста). */
-  private async replaceUpcoming(tracks: Track[]) {
+  private async replaceUpcoming(tracks: Track[], current: () => boolean = () => true) {
     const keep = this.state.queue.slice(0, this.state.index + 1);
-    await TrackPlayer.removeUpcomingTracks();
     const add = tracks.filter(playable);
-    await TrackPlayer.add(await this.toRntp(add));
-    this.update({ queue: [...keep, ...add] });
+    const native = await this.toRntp(add);
+    if (!current()) return;
+    await TrackPlayer.removeUpcomingTracks();
+    if (!current()) return;
+    await TrackPlayer.add(native);
+    if (current()) this.update({ queue: [...keep, ...add] });
   }
 
   private async refillWave(refresh = false) {
-    const wave = this.state.wave;
-    if (!wave || !this.session || this.waveLoading) return;
+    if (!this.session) return;
     const remaining = this.state.queue.length - this.state.index - 1;
-    if (!refresh && remaining > WAVE_REFILL_AT) return;
-    this.waveLoading = true;
-    const feedback = this.waveFeedback;
-    this.waveFeedback = [];
-    try {
-      const res = unwrap(
-        await this.session.client.POST('/api/v1/wave/sessions/{id}/next', {
-          params: { path: { id: wave.sessionId } },
-          body: { feedback },
-        }),
-      );
-      if (this.state.wave?.sessionId !== wave.sessionId) return;
-      if (refresh) await this.replaceUpcoming(res.tracks);
+    await this.wavePolicy.refill(remaining, refresh, async (res, current) => {
+      if (refresh) await this.replaceUpcoming(res.tracks, current);
       else {
         const add = res.tracks.filter(playable);
-        await TrackPlayer.add(await this.toRntp(add));
+        const native = await this.toRntp(add);
+        if (!current()) return;
+        await TrackPlayer.add(native);
+        if (!current()) return;
         this.update({ queue: [...this.state.queue, ...add] });
       }
-      this.update({ wave: { ...wave, fallback: res.fallback } });
-    } catch {
-      this.waveFeedback = [...feedback, ...this.waveFeedback];
-    } finally {
-      this.waveLoading = false;
-    }
+      if (current()) this.update({ wave: { ...this.state.wave!, fallback: res.fallback } });
+    });
   }
 
   // --- состояние ---
@@ -443,6 +441,7 @@ class Controller {
   }
 
   async reset() {
+    this.wavePolicy.activate(null);
     this.attempt = null;
     this.update({ queue: [], track: null, index: 0, playing: false, positionMs: 0, wave: null, context: null });
     if (this.setupDone) await TrackPlayer.reset().catch(() => undefined);