// Player Entity
// Igralec z WASD kontrolami in isometrično podporo
class Player {
    constructor(scene, gridX = 50, gridY = 50, offsetX = 0, offsetY = 0) {
        this.scene = scene;
        this.gridX = gridX;
        this.gridY = gridY;

        // Terrain offset
        this.offsetX = offsetX;
        this.offsetY = offsetY;

        this.iso = new IsometricUtils(48, 24);

        // Hitrost gibanja
        this.moveSpeed = 150; // px/s
        this.gridMoveTime = 200; // ms za premik na eno kocko

        // Stanje
        this.isMoving = false;
        this.direction = 'down';
        this.lastDir = { x: 0, y: 1 }; // Default south

        // Kreira sprite
        this.createSprite();

        // Setup kontrole
        this.setupControls();

        // Space za napad
        this.scene.input.keyboard.on('keydown-SPACE', () => {
            this.attack();
        });

        // Začetna pozicija
        this.updatePosition();
    }

    createSprite() {
        // Prefer animated sprite if available
        let texKey = 'player_walk'; // Spritesheet
        let isAnimated = this.scene.textures.exists(texKey);

        if (!isAnimated) {
            texKey = this.scene.textures.exists('player_sprite') ? 'player_sprite' : 'player';
            if (!this.scene.textures.exists(texKey)) {
                TextureGenerator.createPlayerSprite(this.scene, texKey);
            }
        }

        // Kreira sprite
        const screenPos = this.iso.toScreen(this.gridX, this.gridY);
        this.sprite = this.scene.add.sprite(
            screenPos.x + this.offsetX,
            screenPos.y + this.offsetY,
            texKey
        );
        this.sprite.setOrigin(0.5, 1);

        // Scale logic
        if (isAnimated) {
            this.sprite.setScale(1.5);
        } else {
            this.sprite.setScale(0.3);
        }

        // --- HAND / HELD ITEM SPRITE ---
        this.handSprite = this.scene.add.sprite(
            screenPos.x + this.offsetX + 10,
            screenPos.y + this.offsetY - 25,
            'item_axe'
        );
        this.handSprite.setOrigin(0.5, 0.5);
        this.handSprite.setScale(0.25);
        this.handSprite.setVisible(false);

        this.updateDepth();
    }

    setupControls() {
        this.keys = this.scene.input.keyboard.addKeys({
            up: Phaser.Input.Keyboard.KeyCodes.W,
            down: Phaser.Input.Keyboard.KeyCodes.S,
            left: Phaser.Input.Keyboard.KeyCodes.A,
            right: Phaser.Input.Keyboard.KeyCodes.D
        });
    }

    attack() {
        console.log('⚔️ Player Attack!');
        if (this.scene.interactionSystem) {
            const targetX = this.gridX + this.lastDir.x;
            const targetY = this.gridY + this.lastDir.y;
            this.scene.interactionSystem.handleInteraction(targetX, targetY, true); // true = attackMode
        }

        // Animation
        this.scene.tweens.add({
            targets: this.handSprite,
            angle: 45, // Swing
            yoyo: true,
            duration: 100
        });

        // Player lunge
        const lungeX = this.sprite.x + (this.lastDir.x * 10);
        const lungeY = this.sprite.y + (this.lastDir.y * 5);
        this.scene.tweens.add({
            targets: this.sprite,
            x: lungeX,
            y: lungeY,
            yoyo: true,
            duration: 50
        });
    }

    update(delta) {
        if (this.isMoving) {
            this.updateDepth();
        }

        if (!this.isMoving) {
            this.handleInput();
        }

        this.updateHeldItem();
    }

    updateHeldItem() {
        const uiScene = this.scene.scene.get('UIScene');
        const invSys = this.scene.inventorySystem;

        if (uiScene && invSys) {
            const selectedIdx = uiScene.selectedSlot;
            const slot = invSys.slots[selectedIdx];

            if (slot && (slot.type === 'axe' || slot.type === 'pickaxe' || slot.type === 'hoe' || slot.type === 'sword')) {
                const texKey = `item_${slot.type}`;
                if (this.scene.textures.exists(texKey)) {
                    this.handSprite.setTexture(texKey);
                    this.handSprite.setVisible(true);
                } else {
                    this.handSprite.setVisible(false);
                }
            } else {
                this.handSprite.setVisible(false);
            }
        }
    }

    handleInput() {
        let targetX = this.gridX;
        let targetY = this.gridY;
        let moved = false;
        let facingRight = !this.sprite.flipX;

        // WASD
        let dx = 0;
        let dy = 0;

        if (this.keys.up.isDown) {
            dx = -1; dy = 0;
            moved = true;
            facingRight = false;
        } else if (this.keys.down.isDown) {
            dx = 1; dy = 0;
            moved = true;
            facingRight = true;
        }

        if (this.keys.left.isDown) {
            dx = 0; dy = 1;
            moved = true;
            facingRight = false;
        } else if (this.keys.right.isDown) {
            dx = 0; dy = -1;
            moved = true;
            facingRight = true;
        }

        // Update target
        targetX = this.gridX + dx;
        targetY = this.gridY + dy;

        // Update Facing Direction and Last Dir
        if (moved) {
            // Keep diagonal input clean or prioritize one axis?
            // Just use the calculated dx/dy. 
            // Note: If both UP and LEFT pressed, logic above overwrites dx/dy.
            // Let's refine to allow diagonal accumulation if needed, but existing logic prioritized axis.
            // Current logic: RIGHT/LEFT overwrites UP/DOWN. This is fine for now.

            this.lastDir = { x: dx, y: dy };
            this.sprite.setFlipX(!facingRight);

            // Hand offset
            const handOffset = facingRight ? 10 : -10;
            this.handSprite.setX(this.sprite.x + handOffset);
            this.handSprite.setFlipX(!facingRight);
        }

        // Collision Check
        const terrainSystem = this.scene.terrainSystem;
        if (moved && terrainSystem) {
            if (this.iso.isInBounds(targetX, targetY, terrainSystem.width, terrainSystem.height)) {

                const tile = terrainSystem.tiles[targetY][targetX];
                let isPassable = true;

                if (tile.type.name === 'water') isPassable = false;

                const key = `${targetX},${targetY}`;
                if (terrainSystem.decorationsMap.has(key)) {
                    const decor = terrainSystem.decorationsMap.get(key);
                    const solidTypes = ['tree', 'stone', 'bush', 'wall', 'ruin', 'fence', 'house', 'gravestone'];
                    if (solidTypes.includes(decor.type)) {
                        console.log('⛔ Blocked by:', decor.type);
                        isPassable = false;
                    }
                }

                if (isPassable) {
                    this.moveToGrid(targetX, targetY);
                }
            }
        }
    }

    moveToGrid(targetX, targetY) {
        this.isMoving = true;
        this.gridX = targetX;
        this.gridY = targetY;

        const targetScreen = this.iso.toScreen(targetX, targetY);

        if (this.sprite.texture.key === 'player_walk') {
            this.sprite.play('player_walk_anim', true);
        }

        this.scene.tweens.add({
            targets: [this.sprite, this.handSprite],
            x: '+=' + (targetScreen.x + this.offsetX - this.sprite.x),
            y: '+=' + (targetScreen.y + this.offsetY - this.sprite.y),
            duration: this.gridMoveTime,
            ease: 'Linear',
            onComplete: () => {
                this.isMoving = false;
                this.updatePosition();

                if (this.sprite.texture.key === 'player_walk') {
                    this.sprite.stop();
                    this.sprite.setFrame(0);
                }
            }
        });

        this.updateDepth();
    }

    updatePosition() {
        const screenPos = this.iso.toScreen(this.gridX, this.gridY);
        this.sprite.setPosition(
            screenPos.x + this.offsetX,
            screenPos.y + this.offsetY
        );

        const facingRight = !this.sprite.flipX;
        const handOffset = facingRight ? 10 : -10;
        this.handSprite.setPosition(
            screenPos.x + this.offsetX + handOffset,
            screenPos.y + this.offsetY - 15
        );

        this.updateDepth();
    }

    updateDepth() {
        if (this.sprite) {
            this.sprite.setDepth(this.sprite.y);
            if (this.handSprite) this.handSprite.setDepth(this.sprite.y + 1);
        }
    }

    getPosition() {
        return { x: this.gridX, y: this.gridY };
    }

    getScreenPosition() {
        return { x: this.sprite.x, y: this.sprite.y };
    }

    destroy() {
        if (this.sprite) this.sprite.destroy();
    }

    dieAnimation() {
        this.sprite.setTint(0xff0000);
        this.scene.tweens.add({
            targets: this.sprite,
            angle: 90,
            duration: 500,
            ease: 'Bounce.easeOut'
        });
    }

    respawn() {
        this.sprite.clearTint();
        this.sprite.angle = 0;
    }
}