/**
 * PLAYTIME TRACKER SYSTEM
 * Tracks persistent stats: playtime, deaths, harvests, etc.
 */
class PlaytimeTrackerSystem {
    constructor(scene) {
        this.scene = scene;

        // Initialize stats
        this.stats = {
            playtimeSeconds: 0,
            deaths: 0,
            kills: 0,
            harvests: 0,
            plantings: 0,
            distanceTraveled: 0,
            moneyEarned: 0,
            itemsCrafted: 0,
            blocksPlaced: 0,
            sessionStart: Date.now()
        };

        // Load from save
        this.load();

        // Update timer
        this.updateTimer = 0;
        this.saveInterval = 10000; // Save every 10 seconds
    }

    update(delta) {
        // Increment playtime
        this.stats.playtimeSeconds += delta / 1000;

        // Periodic save
        this.updateTimer += delta;
        if (this.updateTimer >= this.saveInterval) {
            this.updateTimer = 0;
            this.save();
        }
    }

    // Stat tracking methods
    recordDeath() {
        this.stats.deaths++;
        this.save();
    }

    recordKill() {
        this.stats.kills++;
    }

    recordHarvest() {
        this.stats.harvests++;
    }

    recordPlanting() {
        this.stats.plantings++;
    }

    recordDistance(distance) {
        this.stats.distanceTraveled += distance;
    }

    recordMoneyEarned(amount) {
        this.stats.moneyEarned += amount;
    }

    recordCraft() {
        this.stats.itemsCrafted++;
    }

    recordBlockPlaced() {
        this.stats.blocksPlaced++;
    }

    // Formatted playtime
    getPlaytimeFormatted() {
        const hours = Math.floor(this.stats.playtimeSeconds / 3600);
        const minutes = Math.floor((this.stats.playtimeSeconds % 3600) / 60);
        const seconds = Math.floor(this.stats.playtimeSeconds % 60);

        if (hours > 0) {
            return `${hours}h ${minutes}m`;
        } else if (minutes > 0) {
            return `${minutes}m ${seconds}s`;
        } else {
            return `${seconds}s`;
        }
    }

    // Session duration
    getSessionDuration() {
        const sessionMs = Date.now() - this.stats.sessionStart;
        const sessionSec = Math.floor(sessionMs / 1000);
        return sessionSec;
    }

    // Save/Load
    save() {
        localStorage.setItem('novafarma_stats', JSON.stringify(this.stats));
    }

    load() {
        const saved = localStorage.getItem('novafarma_stats');
        if (saved) {
            try {
                const data = JSON.parse(saved);
                this.stats = { ...this.stats, ...data };
                this.stats.sessionStart = Date.now(); // Reset session timer
            } catch (e) {
                console.error('Failed to load stats:', e);
            }
        }
    }

    reset() {
        this.stats = {
            playtimeSeconds: 0,
            deaths: 0,
            kills: 0,
            harvests: 0,
            plantings: 0,
            distanceTraveled: 0,
            moneyEarned: 0,
            itemsCrafted: 0,
            blocksPlaced: 0,
            sessionStart: Date.now()
        };
        this.save();
    }

    // Get all stats
    getStats() {
        return {
            ...this.stats,
            playtimeFormatted: this.getPlaytimeFormatted(),
            sessionDuration: this.getSessionDuration()
        };
    }
}