/**
 * VehicleSystem.js
 * ================
 * KRVAVA ŽETEV - Complete Vehicle System (P14)
 * 
 * Vehicle Types:
 * - Animal Mounts (Horse, Donkey + mutants)
 * - Carts & Wagons (Hand cart, Donkey cart, Horse wagon)
 * - Bikes & Boards (Bicycle, Motorcycle, Skateboard, Scooter)
 * - Water Vehicles (Kayak, SUP, Boat, Motorboat, Surfboard, Submarine)
 * - Flying Vehicles (Glider, Balloon, Griffin, Pterodactyl, Dragon, Helicopter)
 * - Train System (18 stations, fast travel)
 * 
 * @author NovaFarma Team
 * @date 2025-12-23
 */

export default class VehicleSystem {
    constructor(scene) {
        this.scene = scene;

        // Current vehicle
        this.currentVehicle = null;
        this.isRiding = false;

        // Vehicle registry
        this.vehicles = new Map();
        this.ownedVehicles = [];

        // Train system
        this.trainStations = [];
        this.trainTickets = 0;

        console.log('🚗 VehicleSystem initialized');

        // Register all vehicle types
        this.registerVehicles();
    }

    /**
     * Register all vehicle types
     */
    registerVehicles() {
        // 14.1 - Animal Mounts
        this.registerAnimalMounts();

        // 14.2 - Carts & Wagons
        this.registerCartsWagons();

        // 14.3 - Bikes & Boards
        this.registerBikesBoards();

        // 14.4 - Water Vehicles
        this.registerWaterVehicles();

        // 14.5 - Flying Vehicles
        this.registerFlyingVehicles();

        // 14.6 - Train System
        this.registerTrainStations();

        console.log(`✅ Registered ${this.vehicles.size} vehicle types`);
    }

    /**
     * 14.1 - Animal Mounts
     */
    registerAnimalMounts() {
        const mounts = [
            {
                id: 'horse',
                name: 'Horse',
                type: 'mount',
                speed: 2.0,
                stamina: 100,
                requiresSaddle: true,
                canCarry: 50,
                icon: '🐴'
            },
            {
                id: 'mutant_horse',
                name: 'Mutant Horse',
                type: 'mount',
                speed: 3.0,
                stamina: 150,
                requiresSaddle: true,
                canCarry: 75,
                icon: '🦄',
                special: 'Glows in the dark'
            },
            {
                id: 'donkey',
                name: 'Donkey',
                type: 'mount',
                speed: 1.5,
                stamina: 120,
                requiresSaddle: true,
                canCarry: 100, // More cargo!
                icon: '🫏'
            },
            {
                id: 'mutant_donkey',
                name: 'Mutant Donkey',
                type: 'mount',
                speed: 2.0,
                stamina: 180,
                requiresSaddle: true,
                canCarry: 150,
                icon: '🦓',
                special: 'Never gets tired'
            }
        ];

        mounts.forEach(mount => this.vehicles.set(mount.id, mount));
    }

    /**
     * 14.2 - Carts & Wagons
     */
    registerCartsWagons() {
        const carts = [
            {
                id: 'hand_cart',
                name: 'Hand Cart',
                type: 'cart',
                speed: 0.8,
                canCarry: 200,
                requiresAnimal: false,
                icon: '🛒'
            },
            {
                id: 'donkey_cart',
                name: 'Donkey Cart',
                type: 'cart',
                speed: 1.5,
                canCarry: 500,
                requiresAnimal: 'donkey',
                icon: '🛺'
            },
            {
                id: 'horse_wagon',
                name: 'Horse Wagon',
                type: 'cart',
                speed: 2.0,
                canCarry: 1000,
                requiresAnimal: 'horse',
                icon: '🚐'
            }
        ];

        carts.forEach(cart => this.vehicles.set(cart.id, cart));
    }

    /**
     * 14.3 - Bikes & Boards
     */
    registerBikesBoards() {
        const bikes = [
            {
                id: 'bicycle',
                name: 'Bicycle',
                type: 'bike',
                speed: 2.5,
                stamina: -1, // Uses player stamina
                icon: '🚲'
            },
            {
                id: 'motorcycle',
                name: 'Motorcycle',
                type: 'bike',
                speed: 4.0,
                fuelType: 'gasoline',
                fuelCapacity: 10,
                icon: '🏍️',
                sound: 'VROOOOM!'
            },
            {
                id: 'skateboard',
                name: 'Skateboard',
                type: 'board',
                speed: 2.0,
                canDoTricks: true,
                tricks: ['Ollie', 'Kickflip', '360 Spin'],
                icon: '🛹'
            },
            {
                id: 'scooter',
                name: 'Delivery Scooter',
                type: 'scooter',
                speed: 2.2,
                hasMailbox: true,
                canCarry: 30,
                icon: '🛴',
                special: 'Perfect for deliveries!'
            }
        ];

        bikes.forEach(bike => this.vehicles.set(bike.id, bike));
    }

    /**
     * 14.4 - Water Vehicles
     */
    registerWaterVehicles() {
        const waterVehicles = [
            {
                id: 'kayak',
                name: 'Kayak',
                type: 'water',
                speed: 1.5,
                waterOnly: true,
                icon: '🛶'
            },
            {
                id: 'sup',
                name: 'SUP (Stand-Up Paddleboard)',
                type: 'water',
                speed: 1.2,
                waterOnly: true,
                icon: '🏄',
                canFish: true
            },
            {
                id: 'fishing_boat',
                name: 'Fishing Boat',
                type: 'water',
                speed: 1.8,
                waterOnly: true,
                canCarry: 100,
                unlocks: 'deep_sea_fishing',
                icon: '⛵'
            },
            {
                id: 'motorboat',
                name: 'Motorboat',
                type: 'water',
                speed: 3.5,
                waterOnly: true,
                fuelType: 'gasoline',
                fuelCapacity: 20,
                icon: '🚤'
            },
            {
                id: 'surfboard',
                name: 'Surfboard',
                type: 'water',
                speed: 2.5,
                waterOnly: true,
                canRideWaves: true,
                icon: '🏄‍♂️',
                special: 'Catch waves!'
            },
            {
                id: 'atlantis_submarine',
                name: 'Atlantis Submarine',
                type: 'water',
                speed: 2.0,
                waterOnly: true,
                canDive: true,
                maxDepth: 500,
                icon: '🔱',
                special: 'Access underwater ruins!',
                unlocks: 'atlantis_zone'
            }
        ];

        waterVehicles.forEach(vehicle => this.vehicles.set(vehicle.id, vehicle));
    }

    /**
     * 14.5 - Flying Vehicles
     */
    registerFlyingVehicles() {
        const flyingVehicles = [
            {
                id: 'hang_glider',
                name: 'Hang Glider',
                type: 'flying',
                speed: 2.0,
                maxHeight: 100,
                glideOnly: true, // Can't gain altitude
                icon: '🪂'
            },
            {
                id: 'hot_air_balloon',
                name: 'Hot Air Balloon',
                type: 'flying',
                speed: 1.0,
                maxHeight: 200,
                canHover: true,
                icon: '🎈'
            },
            {
                id: 'griffin',
                name: 'Griffin Mount',
                type: 'flying',
                speed: 3.5,
                maxHeight: 300,
                stamina: 200,
                icon: '🦅',
                special: 'Mythical creature!',
                unlocks: 'mythical_zone'
            },
            {
                id: 'pterodactyl',
                name: 'Pterodactyl Mount',
                type: 'flying',
                speed: 4.0,
                maxHeight: 250,
                stamina: 180,
                icon: '🦕',
                special: 'Prehistoric power!',
                unlocks: 'dino_valley'
            },
            {
                id: 'dragon',
                name: 'Dragon Mount',
                type: 'flying',
                speed: 5.0,
                maxHeight: 500,
                stamina: 300,
                canBreatheFire: true,
                icon: '🐉',
                special: 'ENDGAME MOUNT!',
                unlocks: 'everywhere'
            },
            {
                id: 'helicopter',
                name: 'Atlantean Helicopter',
                type: 'flying',
                speed: 4.5,
                maxHeight: 400,
                fuelType: 'atlantean_crystal',
                fuelCapacity: 10,
                icon: '🚁',
                special: 'Ancient technology!',
                unlocks: 'fast_travel'
            }
        ];

        flyingVehicles.forEach(vehicle => this.vehicles.set(vehicle.id, vehicle));
    }

    /**
     * 14.6 - Train System
     */
    registerTrainStations() {
        const stations = [
            { id: 'spawn_town', name: 'Spawn Town', x: 250, y: 250 },
            { id: 'desert', name: 'Desert Oasis', x: 150, y: 150 },
            { id: 'forest', name: 'Endless Forest', x: 350, y: 200 },
            { id: 'mountains', name: 'Mountain Peak', x: 200, y: 100 },
            { id: 'beach', name: 'Sunny Beach', x: 400, y: 300 },
            { id: 'swamp', name: 'Toxic Swamp', x: 100, y: 350 },
            { id: 'volcano', name: 'Volcano Station', x: 50, y: 50 },
            { id: 'snow', name: 'Frozen Tundra', x: 450, y: 100 },
            { id: 'jungle', name: 'Amazon Jungle', x: 300, y: 450 },
            { id: 'loch_ness', name: 'Loch Ness', x: 100, y: 200 },
            { id: 'egypt', name: 'Egyptian Pyramids', x: 200, y: 400 },
            { id: 'atlantis', name: 'Atlantis Port', x: 450, y: 450 },
            { id: 'dino_valley', name: 'Dino Valley', x: 50, y: 400 },
            { id: 'mythical', name: 'Mythical Realm', x: 400, y: 50 },
            { id: 'catacombs', name: 'Catacombs Entrance', x: 300, y: 300 },
            { id: 'chernobyl', name: 'Chernobyl Zone', x: 150, y: 450 },
            { id: 'scotland', name: 'Scottish Highlands', x: 450, y: 200 },
            { id: 'farm', name: 'Central Farm Hub', x: 250, y: 350 }
        ];

        this.trainStations = stations;
        console.log(`🚂 ${stations.length} train stations registered`);
    }

    /**
     * Mount/ride a vehicle
     */
    mountVehicle(vehicleId) {
        const vehicle = this.vehicles.get(vehicleId);
        if (!vehicle) {
            console.error(`Vehicle ${vehicleId} not found!`);
            return false;
        }

        // Check requirements
        if (vehicle.requiresSaddle && !this.hasSaddle()) {
            this.showNotification({
                title: 'Need Saddle',
                text: 'You need a saddle to ride this mount!',
                icon: '🪢'
            });
            return false;
        }

        if (vehicle.requiresAnimal && !this.hasAnimal(vehicle.requiresAnimal)) {
            this.showNotification({
                title: 'Need Animal',
                text: `You need a ${vehicle.requiresAnimal} to use this cart!`,
                icon: '🐴'
            });
            return false;
        }

        // Mount!
        this.currentVehicle = vehicle;
        this.isRiding = true;

        // Apply speed modifier
        if (this.scene.player) {
            this.scene.player.originalSpeed = this.scene.player.speed || 100;
            this.scene.player.speed = this.scene.player.originalSpeed * vehicle.speed;
        }

        console.log(`${vehicle.icon} Mounted ${vehicle.name}!`);

        this.showNotification({
            title: 'Mounted!',
            text: `${vehicle.icon} Riding ${vehicle.name}! Speed: ${vehicle.speed}x`,
            icon: '🏇'
        });

        return true;
    }

    /**
     * Dismount vehicle
     */
    dismountVehicle() {
        if (!this.currentVehicle) return false;

        const vehicle = this.currentVehicle;

        // Restore speed
        if (this.scene.player && this.scene.player.originalSpeed) {
            this.scene.player.speed = this.scene.player.originalSpeed;
        }

        this.currentVehicle = null;
        this.isRiding = false;

        console.log(`Dismounted ${vehicle.name}`);

        this.showNotification({
            title: 'Dismounted',
            text: `Left ${vehicle.name}`,
            icon: ''
        });

        return true;
    }

    /**
     * Train fast travel
     */
    fastTravel(stationId) {
        const station = this.trainStations.find(s => s.id === stationId);
        if (!station) {
            console.error(`Station ${stationId} not found!`);
            return false;
        }

        // Check tickets
        if (this.trainTickets <= 0) {
            this.showNotification({
                title: 'No Tickets',
                text: 'Buy train tickets! (10 Zlatniki/ticket)',
                icon: '🎫'
            });
            return false;
        }

        // Use ticket
        this.trainTickets--;

        // Teleport player
        if (this.scene.player) {
            this.scene.player.x = station.x * 48; // Convert to pixels
            this.scene.player.y = station.y * 48;
        }

        console.log(`🚂 Traveled to ${station.name}!`);

        this.showNotification({
            title: 'Fast Travel',
            text: `🚂 Arrived at ${station.name}! (${this.trainTickets} tickets left)`,
            icon: '🎫'
        });

        return true;
    }

    /**
     * Buy train tickets
     */
    buyTrainTickets(amount) {
        const cost = amount * 10; // 10 Zlatniki per ticket

        // TODO: Check if player has money
        // For now, just give tickets
        this.trainTickets += amount;

        this.showNotification({
            title: 'Tickets Purchased',
            text: `🎫 Bought ${amount} train tickets! Total: ${this.trainTickets}`,
            icon: '💰'
        });
    }

    /**
     * Do skateboard trick
     */
    doSkateboardTrick() {
        if (!this.currentVehicle || this.currentVehicle.id !== 'skateboard') {
            return false;
        }

        const tricks = this.currentVehicle.tricks;
        const trick = Phaser.Utils.Array.GetRandom(tricks);

        console.log(`🛹 ${trick}!`);

        this.showNotification({
            title: 'Sick Trick!',
            text: `🛹 ${trick}! +10 Style Points!`,
            icon: '🤙'
        });

        return true;
    }

    /**
     * Use submarine dive
     */
    diveSubmarine() {
        if (!this.currentVehicle || this.currentVehicle.id !== 'atlantis_submarine') {
            return false;
        }

        console.log('🔱 Diving to Atlantis!');

        // TODO: Trigger underwater zone
        this.showNotification({
            title: 'Diving!',
            text: '🔱 Descending to Atlantis ruins!',
            icon: '🌊'
        });

        return true;
    }

    /**
     * Helper methods
     */
    hasSaddle() {
        // TODO: Check inventory
        return true; // For now, always true
    }

    hasAnimal(animalType) {
        // TODO: Check if player owns animal
        return true; // For now, always true
    }

    /**
     * Get all vehicles
     */
    getAllVehicles() {
        return Array.from(this.vehicles.values());
    }

    /**
     * Get vehicles by type
     */
    getVehiclesByType(type) {
        return this.getAllVehicles().filter(v => v.type === type);
    }

    /**
     * Get train stations
     */
    getTrainStations() {
        return this.trainStations;
    }

    /**
     * Helper: Show notification
     */
    showNotification(notification) {
        console.log(`📢 ${notification.icon} ${notification.title}: ${notification.text}`);

        const ui = this.scene.scene.get('UIScene');
        if (ui && ui.showNotification) {
            ui.showNotification(notification);
        }
    }
}