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saopig1andClaude Opus 4.8
470a62129a
- backend.ts: type-only SpotifyAudioBackend contract + track/metadata DTOs - go-librespot-config.ts: renderConfigYml() hand-built config (pipe/s16le, server enabled, interactive OAuth), no yaml dependency - tests assert exact keys/values and round-trip via a tiny structural parser Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
42 lines
1.4 KiB
TypeScript
42 lines
1.4 KiB
TypeScript
// src/music/spotify/backend.ts
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// Type contract for the Spotify audio backend (go-librespot sidecar).
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// Interface-only: this module intentionally contains NO runtime code so it
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// can be imported for types by go-librespot.ts and controller.ts without
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// pulling in child_process/ws/ffmpeg at type-check time.
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/** Emitted when the currently playing Spotify track finishes or is stopped. */
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export interface SpotifyTrackEndedEvent {
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uri: string;
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reason: "ended" | "stopped" | "error";
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}
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/** Now-playing metadata surfaced from the go-librespot "metadata" event. */
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export interface SpotifyNowPlaying {
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uri: string;
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name: string;
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artist: string;
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album: string;
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coverUrl: string;
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durationMs: number;
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}
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/**
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* Long-lived Spotify audio source: owns the go-librespot sidecar + FIFO->ffmpeg
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* PCM pipe and exposes transport control plus a continuous 48kHz s16le stereo
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* PCM stream to feed AudioPlayer.playPcmStream().
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*/
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export interface SpotifyAudioBackend {
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start(): Promise<void>;
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stop(): void;
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isReady(): boolean;
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playTrack(uri: string): Promise<void>;
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pause(): Promise<void>;
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resume(): Promise<void>;
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seek(ms: number): Promise<void>;
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getPcmStream(): import("node:stream").Readable;
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getPositionMs(): number;
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on(event: "trackEnded", cb: (e: SpotifyTrackEndedEvent) => void): void;
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on(event: "metadata", cb: (m: SpotifyNowPlaying) => void): void;
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on(event: "ready" | "error", cb: (arg?: unknown) => void): void;
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}
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