// ========================================================
// NOVE GLOBALNE KONSTANTE ZA LOKACIJE
// ========================================================
const FARM_SIZE = 8;
const FARM_CENTER_X = 20; // Lokacija farme na X osi
const FARM_CENTER_Y = 20; // Lokacija farme na Y osi

const CITY_SIZE = 15;
const CITY_START_X = 65; // Desni del mape (npr. med 65 in 80)
const CITY_START_Y = 65;

// Terrain Generator System
class TerrainSystem {
    constructor(scene, width = 100, height = 100) {
        this.scene = scene;
        this.width = width;
        this.height = height;

        this.iso = new IsometricUtils(48, 24);
        this.noise = new PerlinNoise(Date.now());

        this.tiles = [];
        this.decorations = [];
        this.decorationsMap = new Map();
        this.cropsMap = new Map();

        this.visibleTiles = new Map();
        this.visibleDecorations = new Map();
        this.visibleCrops = new Map();

        this.tilePool = {
            active: [],
            inactive: [],
            get: () => {
                if (this.tilePool.inactive.length > 0) {
                    const s = this.tilePool.inactive.pop();
                    s.setVisible(true);
                    return s;
                }
                const s = this.scene.add.sprite(0, 0, 'dirt');
                s.setOrigin(0.5, 0.5);
                return s;
            },
            release: (sprite) => {
                sprite.setVisible(false);
                this.tilePool.inactive.push(sprite);
            }
        };

        this.decorationPool = {
            active: [],
            inactive: [],
            get: () => {
                if (this.decorationPool.inactive.length > 0) {
                    const s = this.decorationPool.inactive.pop();
                    s.setVisible(true);
                    s.clearTint();
                    return s;
                }
                return this.scene.add.sprite(0, 0, 'tree');
            },
            release: (sprite) => {
                sprite.setVisible(false);
                this.decorationPool.inactive.push(sprite);
            }
        };

        this.cropPool = {
            active: [],
            inactive: [],
            get: () => {
                if (this.cropPool.inactive.length > 0) {
                    const s = this.cropPool.inactive.pop();
                    s.setVisible(true);
                    return s;
                }
                return this.scene.add.sprite(0, 0, 'crop_stage_1');
            },
            release: (sprite) => {
                sprite.setVisible(false);
                this.cropPool.inactive.push(sprite);
            }
        };

        this.terrainTypes = {
            WATER: { name: 'water', height: 0, color: 0x4444ff },
            SAND: { name: 'sand', height: 0.2, color: 0xdddd44 },
            GRASS_FULL: { name: 'grass_full', height: 0.35, color: 0x44aa44 },
            GRASS_TOP: { name: 'grass_top', height: 0.45, color: 0x66cc66 },
            DIRT: { name: 'dirt', height: 0.5, color: 0x8b4513 },
            STONE: { name: 'stone', height: 0.7, color: 0x888888 },
            PAVEMENT: { name: 'pavement', height: 0.6, color: 0x777777 },
            RUINS: { name: 'ruins', height: 0.6, color: 0x555555 },
            PATH: { name: 'path', height: -1, color: 0xc2b280 },
            FARMLAND: { name: 'farmland', height: -1, color: 0x5c4033 }
        };

        this.offsetX = 0;
        this.offsetY = 0;
    }

    createTileTextures() {
        const tileWidth = 48;
        const tileHeight = 60;
        const types = Object.values(this.terrainTypes);

        types.forEach((type) => {
            if (this.scene.textures.exists(type.name)) return;

            const graphics = this.scene.make.graphics({ x: 0, y: 0, add: false });
            const x = 0;
            const midX = 24;
            const midY = 12;
            const bottomY = 24;
            const depth = 20;

            graphics.fillStyle(0x8B4513);
            graphics.beginPath();
            graphics.moveTo(midX, bottomY);
            graphics.lineTo(midX, bottomY + depth);
            graphics.lineTo(x, midY + depth);
            graphics.lineTo(x, midY);
            graphics.closePath();
            graphics.fill();

            graphics.fillStyle(0x6B3410);
            graphics.beginPath();
            graphics.moveTo(x + 48, midY);
            graphics.lineTo(x + 48, midY + depth);
            graphics.lineTo(midX, bottomY + depth);
            graphics.lineTo(midX, bottomY);
            graphics.closePath();
            graphics.fill();

            graphics.fillStyle(type.color);
            graphics.beginPath();
            graphics.moveTo(midX, 0);
            graphics.lineTo(x + 48, midY);
            graphics.lineTo(midX, bottomY);
            graphics.lineTo(x, midY);
            graphics.closePath();
            graphics.fill();

            graphics.lineStyle(1, 0xffffff, 0.15);
            graphics.beginPath();
            graphics.moveTo(x, midY);
            graphics.lineTo(midX, 0);
            graphics.lineTo(x + 48, midY);
            graphics.strokePath();

            if (type.name.includes('grass')) {
                graphics.fillStyle(Phaser.Display.Color.IntegerToColor(type.color).lighten(10).color);
                for (let i = 0; i < 8; i++) {
                    const rx = x + 10 + Math.random() * 28;
                    const ry = 4 + Math.random() * 16;
                    graphics.fillRect(rx, ry, 2, 2);
                }
            }
            if (type.name.includes('stone') || type.name.includes('ruins')) {
                graphics.fillStyle(0x444444);
                for (let i = 0; i < 6; i++) {
                    const rx = x + 8 + Math.random() * 30;
                    const ry = 4 + Math.random() * 16;
                    graphics.fillRect(rx, ry, 3, 3);
                }
            }

            if (type.name.includes('pavement')) {
                graphics.lineStyle(1, 0x555555, 0.5);
                graphics.beginPath();
                graphics.moveTo(x + 12, midY + 6);
                graphics.lineTo(x + 36, midY - 6);
                graphics.strokePath();
            }

            graphics.generateTexture(type.name, tileWidth, tileHeight);
            graphics.destroy();
        });
    }

    generate() {
        this.createTileTextures();

        for (let y = 0; y < this.height; y++) {
            this.tiles[y] = [];
            for (let x = 0; x < this.width; x++) {
                const nx = x * 0.1;
                const ny = y * 0.1;
                const elevation = this.noise.noise(nx, ny);

                let terrainType = this.terrainTypes.GRASS_FULL;

                if (x < 3 || x >= this.width - 3 || y < 3 || y >= this.height - 3) {
                    terrainType = this.terrainTypes.GRASS_FULL;
                } else {
                    if (elevation < -0.6) terrainType = this.terrainTypes.WATER;
                    else if (elevation > 0.1) terrainType = this.terrainTypes.SAND;
                    else if (elevation > 0.2) terrainType = this.terrainTypes.GRASS_FULL;
                    else if (elevation > 0.3) terrainType = this.terrainTypes.GRASS_TOP;
                    else if (elevation > 0.7) terrainType = this.terrainTypes.DIRT;
                    else if (elevation > 0.85) terrainType = this.terrainTypes.STONE;
                }

                if (Math.abs(x - FARM_CENTER_X) <= FARM_SIZE / 2 && Math.abs(y - FARM_CENTER_Y) <= FARM_SIZE / 2) {
                    terrainType = this.terrainTypes.DIRT;
                }
                if (x >= CITY_START_X && x < CITY_START_X + CITY_SIZE &&
                    y >= CITY_START_Y && y < CITY_START_Y + CITY_SIZE) {
                    terrainType = this.terrainTypes.PAVEMENT;
                    if (Math.random() < 0.2) {
                        terrainType = this.terrainTypes.RUINS;
                    }
                }

                this.tiles[y][x] = {
                    type: terrainType.name,
                    texture: terrainType.name,
                    hasDecoration: false,
                    hasCrop: false
                };
            }
        }

        let treeCount = 0;
        let rockCount = 0;
        let flowerCount = 0;

        const validPositions = [];
        const isFarm = (x, y) => Math.abs(x - FARM_CENTER_X) <= (FARM_SIZE / 2 + 2) && Math.abs(y - FARM_CENTER_Y) <= (FARM_SIZE / 2 + 2);
        const isCity = (x, y) => x >= CITY_START_X - 2 && x < CITY_START_X + CITY_SIZE + 2 && y >= CITY_START_Y - 2 && y < CITY_START_Y + CITY_SIZE + 2;

        for (let y = 5; y < this.height - 5; y++) {
            for (let x = 5; x < this.width - 5; x++) {
                if (isFarm(x, y) || isCity(x, y)) continue;

                const tile = this.tiles[y][x];
                if (tile.type !== 'water' && tile.type !== 'sand' && tile.type !== 'stone') {
                    validPositions.push({ x, y });
                }
            }
        }

        for (let i = validPositions.length - 1; i > 0; i--) {
            const j = Math.floor(Math.random() * (i + 1));
            [validPositions[i], validPositions[j]] = [validPositions[j], validPositions[i]];
        }

        for (let i = 0; i < Math.min(25, validPositions.length); i++) {
            const pos = validPositions[i];
            let treeType = 'tree_green_new';
            const rand = Math.random();
            if (rand < 0.15) treeType = 'tree_blue_new';
            else if (rand < 0.25) treeType = 'tree_dead_new';

            this.addDecoration(pos.x, pos.y, treeType);
            treeCount++;
        }
        for (let i = 25; i < Math.min(50, validPositions.length); i++) {
            const pos = validPositions[i];
            // Uporabi uporabnikove kamne
            const rockType = Math.random() > 0.5 ? 'rock_1' : 'rock_2';
            this.addDecoration(pos.x, pos.y, rockType);
            rockCount++;
        }

        const flowerNoise = new PerlinNoise(Date.now() + 3000);
        for (let y = 5; y < this.height - 5; y++) {
            for (let x = 5; x < this.width - 5; x++) {
                if (isFarm(x, y) || isCity(x, y)) continue;

                const tile = this.tiles[y][x];
                const val = flowerNoise.noise(x * 0.12, y * 0.12);
                if (val > 0.85 && tile.type.includes('grass')) {
                    this.addDecoration(x, y, 'flowers_new');
                    flowerCount++;
                }
            }
        }


        const roomSize = 5;
        const roomsAcross = Math.floor(CITY_SIZE / roomSize);

        for (let ry = 0; ry < roomsAcross; ry++) {
            for (let rx = 0; rx < roomsAcross; rx++) {
                if (Math.random() < 0.75) {
                    const gx = CITY_START_X + rx * roomSize;
                    const gy = CITY_START_Y + ry * roomSize;
                    this.placeStructure(gx, gy, 'ruin_room');
                } else {
                    const gx = CITY_START_X + rx * roomSize + 2;
                    const gy = CITY_START_Y + ry * roomSize + 2;
                    const rockType = Math.random() > 0.5 ? 'rock_1' : 'rock_2';
                    this.addDecoration(gx, gy, rockType);
                }
            }
        }

        console.log(`✅ Teren generiran: ${treeCount} dreves, ${rockCount} kamnov.`);
    }

    damageDecoration(x, y, amount) {
        const key = `${x},${y}`;
        const decor = this.decorationsMap.get(key);
        if (!decor) return false;
        decor.hp -= amount;

        if (this.visibleDecorations.has(key)) {
            const sprite = this.visibleDecorations.get(key);
            sprite.setTint(0xff0000);
            this.scene.time.delayedCall(100, () => sprite.clearTint());
            this.scene.tweens.add({
                targets: sprite,
                x: sprite.x + 2,
                duration: 50,
                yoyo: true,
                repeat: 1
            });
        }

        if (decor.hp <= 0) {
            this.removeDecoration(x, y);
            return 'destroyed';
        }
        return 'hit';
    }

    removeDecoration(x, y) {
        const key = `${x},${y}`;
        const decor = this.decorationsMap.get(key);
        if (!decor) return;

        if (this.visibleDecorations.has(key)) {
            const sprite = this.visibleDecorations.get(key);
            sprite.setVisible(false);
            this.decorationPool.release(sprite);
            this.visibleDecorations.delete(key);
        }

        this.decorationsMap.delete(key);
        const index = this.decorations.indexOf(decor);
        if (index > -1) this.decorations.splice(index, 1);
        if (this.tiles[y] && this.tiles[y][x]) this.tiles[y][x].hasDecoration = false;

        return decor.type;
    }

    init(offsetX, offsetY) {
        this.offsetX = offsetX;
        this.offsetY = offsetY;
    }

    setTile(x, y, type) {
        if (x >= 0 && x < this.width && y >= 0 && y < this.height) {
            this.tiles[y][x].type = type;
        }
    }

    placeStructure(gridX, gridY, type) {
        if (type === 'ruin') {
            for (let y = 0; y < 6; y++) {
                for (let x = 0; x < 6; x++) {
                    if (Math.random() > 0.6) this.addDecoration(gridX + x, gridY + y, 'fence');
                    this.setTile(gridX + x, gridY + y, 'stone');
                }
            }
        }
        if (type === 'arena') {
            const size = 12;
            for (let y = 0; y < size; y++) {
                for (let x = 0; x < size; x++) {
                    const tx = gridX + x;
                    const ty = gridY + y;

                    this.setTile(tx, ty, 'stone');
                    if (x === 0 || x === size - 1 || y === 0 || y === size - 1) {
                        if (!(x === Math.floor(size / 2) && y === size - 1)) {
                            this.addDecoration(tx, ty, 'fence');
                        }
                    }
                }
            }
            this.addDecoration(gridX + 6, gridY + 6, 'gravestone');
        }
        if (type === 'ruin_room') {
            for (let y = 0; y < 5; y++) {
                for (let x = 0; x < 5; x++) {
                    const tx = gridX + x;
                    const ty = gridY + y;
                    if (x > 0 && x < 4 && y > 0 && y < 4) {
                        this.setTile(tx, ty, 'ruins');
                    }
                    if (x === 0 || x === 4 || y === 0 || y === 4) {
                        const isCenter = (x === 2 || y === 2);
                        if (isCenter && Math.random() > 0.5) continue;
                        if (Math.random() > 0.3) {
                            this.addDecoration(tx, ty, 'fence');
                        } else {
                            // User rocks in ruins
                            if (Math.random() > 0.5) {
                                const rType = Math.random() > 0.5 ? 'rock_1' : 'rock_2';
                                this.addDecoration(tx, ty, rType);
                            }
                        }
                    }
                }
            }
        }
    }

    addDecoration(gridX, gridY, type) {
        if (gridX < 0 || gridX >= this.width || gridY < 0 || gridY >= this.height) return;

        const key = `${gridX},${gridY}`;
        if (this.decorationsMap.has(key)) return;

        let scale = 1.0;

        if (type === 'rock_1' || type === 'rock_2') scale = 1.5; // Povečano (bilo 0.5)
        else if (type === 'tree_green_new' || type === 'tree_blue_new' || type === 'tree_dead_new') scale = 0.04;
        else if (type === 'flowers_new') scale = 0.02;
        else if (type === 'fence') scale = 0.025;
        else if (type === 'gravestone') scale = 0.03;
        else if (type === 'hill_sprite') scale = 0.025;
        else {
            // Old Assets (Low Res)
            if (type.includes('tree')) scale = 1.2 + Math.random() * 0.4;
            else if (type.includes('rock')) scale = 0.8;
            else scale = 1.0;
        }

        const decorData = {
            gridX: gridX,
            gridY: gridY,
            type: type,
            id: key,
            maxHp: 10,
            hp: 10,
            scale: scale
        };
        this.decorations.push(decorData);
        this.decorationsMap.set(key, decorData);

        if (this.tiles[gridY] && this.tiles[gridY][gridX]) {
            this.tiles[gridY][gridX].hasDecoration = true;
        }
    }

    setTileType(x, y, typeName) {
        if (!this.tiles[y] || !this.tiles[y][x]) return;
        this.tiles[y][x].type = typeName;

        const key = `${x},${y}`;
        if (this.visibleTiles.has(key)) {
            const sprite = this.visibleTiles.get(key);
            sprite.setTexture(typeName);
        }
    }

    addCrop(x, y, cropData) {
        const key = `${x},${y}`;
        this.cropsMap.set(key, cropData);
        this.tiles[y][x].hasCrop = true;
    }

    removeCrop(x, y) {
        const key = `${x},${y}`;
        if (this.cropsMap.has(key)) {
            if (this.visibleCrops.has(key)) {
                const sprite = this.visibleCrops.get(key);
                sprite.setVisible(false);
                this.cropPool.release(sprite);
                this.visibleCrops.delete(key);
            }
            this.cropsMap.delete(key);
            this.tiles[y][x].hasCrop = false;
        }
    }

    updateCropVisual(x, y, stage) {
        const key = `${x},${y}`;
        if (this.visibleCrops.has(key)) {
            const sprite = this.visibleCrops.get(key);
            sprite.setTexture(`crop_stage_${stage}`);
        }
    }

    getTile(x, y) {
        if (this.tiles[y] && this.tiles[y][x]) {
            return this.tiles[y][x];
        }
        return null;
    }

    updateCulling(camera) {
        const view = camera.worldView;
        let buffer = 200;
        if (this.scene.settings && this.scene.settings.viewDistance === 'LOW') buffer = 50;

        const left = view.x - buffer - this.offsetX;
        const top = view.y - buffer - this.offsetY;
        const right = view.x + view.width + buffer - this.offsetX;
        const bottom = view.y + view.height + buffer - this.offsetY;

        const p1 = this.iso.toGrid(left, top);
        const p2 = this.iso.toGrid(right, top);
        const p3 = this.iso.toGrid(left, bottom);
        const p4 = this.iso.toGrid(right, bottom);

        const minGridX = Math.floor(Math.min(p1.x, p2.x, p3.x, p4.x));
        const maxGridX = Math.ceil(Math.max(p1.x, p2.x, p3.x, p4.x));
        const minGridY = Math.floor(Math.min(p1.y, p2.y, p3.y, p4.y));
        const maxGridY = Math.ceil(Math.max(p1.y, p2.y, p3.y, p4.y));

        const startX = Math.max(0, minGridX);
        const endX = Math.min(this.width, maxGridX);
        const startY = Math.max(0, minGridY);
        const endY = Math.min(this.height, maxGridY);

        const neededTileKeys = new Set();
        const neededDecorKeys = new Set();
        const neededCropKeys = new Set();

        const voxelOffset = 12;

        for (let y = startY; y < endY; y++) {
            for (let x = startX; x < endX; x++) {
                const key = `${x},${y}`;
                const tile = this.tiles[y][x];

                if (tile) {
                    neededTileKeys.add(key);
                    if (!this.visibleTiles.has(key)) {
                        const sprite = this.tilePool.get();
                        sprite.setTexture(tile.type);
                        const screenPos = this.iso.toScreen(x, y);
                        sprite.setPosition(screenPos.x + this.offsetX, screenPos.y + this.offsetY);
                        sprite.setDepth(this.iso.getDepth(x, y));
                        this.visibleTiles.set(key, sprite);
                    }
                }

                const decor = this.decorationsMap.get(key);
                if (decor) {
                    neededDecorKeys.add(key);
                    if (!this.visibleDecorations.has(key)) {
                        const sprite = this.decorationPool.get();
                        const screenPos = this.iso.toScreen(x, y);

                        sprite.setPosition(screenPos.x + this.offsetX, screenPos.y + this.offsetY - voxelOffset);

                        if (decor.type.includes('house') || decor.type.includes('market') || decor.type.includes('structure')) {
                            sprite.setOrigin(0.5, 0.8);
                        } else {
                            sprite.setOrigin(0.5, 1.0);
                        }

                        sprite.setTexture(decor.type);
                        sprite.setScale(decor.scale || 1.0);

                        if (decor.alpha !== undefined) {
                            sprite.setAlpha(decor.alpha);
                        }

                        sprite.setDepth(this.iso.getDepth(x, y) + 1);
                        this.visibleDecorations.set(key, sprite);
                    }
                }

                const crop = this.cropsMap.get(key);
                if (crop) {
                    neededCropKeys.add(key);
                    if (!this.visibleCrops.has(key)) {
                        const sprite = this.cropPool.get();
                        const screenPos = this.iso.toScreen(x, y);
                        sprite.setPosition(screenPos.x + this.offsetX, screenPos.y + this.offsetY - voxelOffset);
                        sprite.setTexture(`crop_stage_${crop.stage}`);
                        sprite.setOrigin(0.5, 1);
                        sprite.setDepth(this.iso.getDepth(x, y) + 0.5);
                        this.visibleCrops.set(key, sprite);
                    }
                }
            }
        }

        for (const [key, sprite] of this.visibleTiles) {
            if (!neededTileKeys.has(key)) {
                sprite.setVisible(false);
                this.tilePool.release(sprite);
                this.visibleTiles.delete(key);
            }
        }
        for (const [key, sprite] of this.visibleDecorations) {
            if (!neededDecorKeys.has(key)) {
                sprite.setVisible(false);
                this.decorationPool.release(sprite);
                this.visibleDecorations.delete(key);
            }
        }
        for (const [key, sprite] of this.visibleCrops) {
            if (!neededCropKeys.has(key)) {
                sprite.setVisible(false);
                this.cropPool.release(sprite);
                this.visibleCrops.delete(key);
            }
        }
    }
}