const FINISHED = ['FINISHED', 'COMPLETED'];

/**
 * Every achievement unlocked. Only while the stats are visible: Core can still send the old unlock count after they turn private.
 */
export const allAchievementsUnlocked = (game) => game.hasAchievements && game.statsVisible
    && game.achievementsTotal > 0 && game.achievementsUnlocked >= game.achievementsTotal;

/**
 * 0: not finished, 1: finished, 2: finished and every achievement unlocked.
 */
export const celebrationLevel = (game) => {
    if (!FINISHED.includes(game.status)) return 0;
    return allAchievementsUnlocked(game) ? 2 : 1;
};

/**
 * The confetti to play: only when the level rises while the page shows the game (the user sets Finished or completes
 * it here). Opening a finished game and a reload play nothing.
 *
 * @param before {appid, level} of the game shown before, null on opening the page
 * @returns 'small', 'big' or null
 */
export const celebrationFor = (before, game) => {
    if (before?.appid !== game.appid) return null;
    const level = celebrationLevel(game);
    if (level <= before.level) return null;
    return level === 2 ? 'big' : 'small';
};