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import { create } from "zustand";
import type { PlaybackState, PlaybackControls } from "@/types/playback";
import { useTimelineStore } from "@/stores/timeline-store";
import { useProjectStore } from "./project-store";
interface PlaybackStore extends PlaybackState, PlaybackControls {
setDuration: (duration: number) => void;
setCurrentTime: (time: number) => void;
}
let playbackTimer: number | null = null;
const startTimer = (store: () => PlaybackStore) => {
if (playbackTimer) cancelAnimationFrame(playbackTimer);
// Use requestAnimationFrame for smoother updates
const updateTime = () => {
const state = store();
if (state.isPlaying && state.currentTime < state.duration) {
const now = performance.now();
const delta = (now - lastUpdate) / 1000; // Convert to seconds
lastUpdate = now;
const newTime = state.currentTime + delta * state.speed;
// Get actual content duration from timeline store
const actualContentDuration = useTimelineStore
.getState()
.getTotalDuration();
// Stop at actual content end, not timeline duration (which has 10s minimum)
// It was either this or reducing default min timeline to 1 second
const effectiveDuration =
actualContentDuration > 0 ? actualContentDuration : state.duration;
if (newTime >= effectiveDuration) {
// When content completes, pause just before the end so we can see the last frame
const projectFps = useProjectStore.getState().activeProject?.fps;
if (!projectFps)
console.error("Project FPS is not set, assuming 30fps");
const frameOffset = 1 / (projectFps ?? 30); // Stop 1 frame before end based on project FPS
const stopTime = Math.max(0, effectiveDuration - frameOffset);
state.pause();
state.setCurrentTime(stopTime);
// Notify video elements to sync with end position
window.dispatchEvent(
new CustomEvent("playback-seek", {
detail: { time: stopTime },
})
);
} else {
state.setCurrentTime(newTime);
// Notify video elements to sync
window.dispatchEvent(
new CustomEvent("playback-update", { detail: { time: newTime } })
);
}
}
playbackTimer = requestAnimationFrame(updateTime);
};
let lastUpdate = performance.now();
playbackTimer = requestAnimationFrame(updateTime);
};
const stopTimer = () => {
if (playbackTimer) {
cancelAnimationFrame(playbackTimer);
playbackTimer = null;
}
};
export const usePlaybackStore = create<PlaybackStore>((set, get) => ({
isPlaying: false,
currentTime: 0,
duration: 0,
volume: 1,
muted: false,
previousVolume: 1,
speed: 1.0,
play: () => {
set({ isPlaying: true });
startTimer(get);
},
pause: () => {
set({ isPlaying: false });
stopTimer();
},
toggle: () => {
const { isPlaying } = get();
if (isPlaying) {
get().pause();
} else {
get().play();
}
},
seek: (time: number) => {
const { duration } = get();
const clampedTime = Math.max(0, Math.min(duration, time));
set({ currentTime: clampedTime });
const event = new CustomEvent("playback-seek", {
detail: { time: clampedTime },
});
window.dispatchEvent(event);
},
setVolume: (volume: number) =>
set((state) => ({
volume: Math.max(0, Math.min(1, volume)),
muted: volume === 0,
previousVolume: volume > 0 ? volume : state.previousVolume,
})),
setSpeed: (speed: number) => {
const newSpeed = Math.max(0.1, Math.min(2.0, speed));
set({ speed: newSpeed });
const event = new CustomEvent("playback-speed", {
detail: { speed: newSpeed },
});
window.dispatchEvent(event);
},
setDuration: (duration: number) => set({ duration }),
setCurrentTime: (time: number) => set({ currentTime: time }),
mute: () => {
const { volume, previousVolume } = get();
set({
muted: true,
previousVolume: volume > 0 ? volume : previousVolume,
volume: 0,
});
},
unmute: () => {
const { previousVolume } = get();
set({ muted: false, volume: previousVolume ?? 1 });
},
toggleMute: () => {
const { muted } = get();
if (muted) {
get().unmute();
} else {
get().mute();
}
},
}));
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