import { writable } from 'svelte/store';
import {
  emptyProgress,
  loadProgress,
  recordRun,
  saveProgress,
  type Progress,
} from '../game/persistence';
import type { Target } from '../game/tasks';
import type { Stage } from '../game/stages';

const initial: Progress = typeof window === 'undefined' ? emptyProgress() : loadProgress();

export const progress = writable<Progress>(initial);

// Letzter abgeschlossener Lauf — damit der ResultScreen genau diesen Versuch
// hervorheben kann, auch wenn er nicht der beste ist.
export const lastRun = writable<{ target: Target; stage: Stage; date: string } | null>(null);

progress.subscribe((p) => {
  if (typeof window !== 'undefined') saveProgress(p);
});

export function recordResult(target: Target, stage: Stage, timeMs?: number): void {
  const date = new Date().toISOString();
  progress.update((p) => recordRun(p, target, stage, date, timeMs));
  lastRun.set({ target, stage, date });
}