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import { useEffect } from 'react';
import { listen } from '@tauri-apps/api/event';
import { invoke } from '@tauri-apps/api/core';
import { useTimerStore, TimerTickPayload } from '../store/timerStore';
import { useTaskStore } from '../store/taskStore';
interface PhaseChangedPayload {
phase: TimerTickPayload['phase'];
session_count: number;
}
interface CompletedPayload {
task_id: string | null;
}
export function useTimerEvents(
onCompleted: (taskId: string | null) => void,
) {
const setTimerTick = useTimerStore((s) => s.setTimerTick);
const setRunning = useTimerStore((s) => s.setRunning);
const fetchTasks = useTaskStore((s) => s.fetchTasks);
useEffect(() => {
// Bootstrap initial state from backend
invoke<{
phase: TimerTickPayload['phase'];
remaining_secs: number;
total_secs: number;
running: boolean;
session_count: number;
current_task_id: string | null;
}>('get_timer_status')
.then((status) => {
setTimerTick({
phase: status.phase,
remaining_secs: status.remaining_secs,
total_secs: status.total_secs,
session_count: status.session_count,
current_task_id: status.current_task_id,
});
setRunning(status.running);
})
.catch((e) => console.error('get_timer_status error:', e));
let unlistenTick: (() => void) | null = null;
let unlistenCompleted: (() => void) | null = null;
let unlistenPhaseChanged: (() => void) | null = null;
listen<TimerTickPayload>('timer-tick', (event) => {
setTimerTick(event.payload);
setRunning(true);
}).then((fn) => { unlistenTick = fn; });
listen<CompletedPayload>('timer-completed', (event) => {
setRunning(false);
onCompleted(event.payload.task_id);
// Refresh tasks since remaining_sessions may have changed
fetchTasks();
}).then((fn) => { unlistenCompleted = fn; });
listen<PhaseChangedPayload>('timer-phase-changed', (event) => {
setRunning(false);
setTimerTick({
phase: event.payload.phase,
remaining_secs: useTimerStore.getState().remainingSecs,
total_secs: useTimerStore.getState().totalSecs,
session_count: event.payload.session_count,
current_task_id: useTimerStore.getState().currentTaskId,
});
}).then((fn) => { unlistenPhaseChanged = fn; });
return () => {
unlistenTick?.();
unlistenCompleted?.();
unlistenPhaseChanged?.();
};
}, [setTimerTick, setRunning, fetchTasks, onCompleted]);
}
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