import Phaser from 'phaser';
import type { Card } from '@/game/onitama';
import type { Spawner } from 'boardgame-phaser';
import type { OnitamaScene } from '@/scenes/OnitamaScene';
import { BOARD_OFFSET, CELL_SIZE } from './PawnSpawner';

export const CARD_WIDTH = 100;
export const CARD_HEIGHT = 140;
const BOARD_SIZE = 5;

export interface CardSpawnData {
  cardId: string;
  position: 'red' | 'black' | 'spare';
  index: number;
}

export class CardSpawner implements Spawner<CardSpawnData, Phaser.GameObjects.Container> {
  private previousData = new Map<string, CardSpawnData>();

  constructor(public readonly scene: OnitamaScene) {}

  *getData(): Iterable<CardSpawnData> {
    const state = this.scene.state;

    // 红方卡牌
    for (let i = 0; i < state.redCards.length; i++) {
      yield { cardId: state.redCards[i], position: 'red', index: i };
    }

    // 黑方卡牌
    for (let i = 0; i < state.blackCards.length; i++) {
      yield { cardId: state.blackCards[i], position: 'black', index: i };
    }

    // 备用卡牌
    yield { cardId: state.spareCard, position: 'spare', index: 0 };
  }

  getKey(data: CardSpawnData): string {
    return data.cardId;
  }

  private getCardPosition(data: CardSpawnData): { x: number, y: number } {
    const boardLeft = BOARD_OFFSET.x;
    const boardTop = BOARD_OFFSET.y;
    const boardRight = BOARD_OFFSET.x + BOARD_SIZE * CELL_SIZE;
    const boardCenterX = boardLeft + (BOARD_SIZE * CELL_SIZE) / 2;

    if (data.position === 'red') {
      return {
        x: boardLeft - CARD_WIDTH - 60 + 60,
        y: boardTop + 80 + data.index * (CARD_HEIGHT + 15),
      };
    } else if (data.position === 'black') {
      return {
        x: boardRight + 60 + 40,
        y: boardTop + 80 + data.index * (CARD_HEIGHT + 15),
      };
    } else {
      return {
        x: boardCenterX,
        y: boardTop - CARD_HEIGHT - 20,
      };
    }
  }

  private hasPositionChanged(data: CardSpawnData): boolean {
    const prev = this.previousData.get(data.cardId);
    if (!prev) return true;
    return prev.position !== data.position || prev.index !== data.index;
  }

  onUpdate(data: CardSpawnData, obj: Phaser.GameObjects.Container): void {
    // 检查是否是选中的卡牌
    const isSelected = this.scene.uiState.value.selectedCard === data.cardId;
    
    // 高亮选中的卡牌
    if (isSelected) {
      this.highlightCard(obj, 0xfbbf24, 3);
    } else {
      this.unhighlightCard(obj);
    }

    // 只在位置实际变化时才播放移动动画
    if (!this.hasPositionChanged(data)) {
      this.previousData.set(data.cardId, { ...data });
      return;
    }

    const pos = this.getCardPosition(data);

    // 播放移动动画并添加中断
    const tween = this.scene.tweens.add({
      targets: obj,
      x: pos.x,
      y: pos.y,
      duration: 350,
      ease: 'Back.easeOut',
    });

    this.scene.addTweenInterruption(tween);
    this.previousData.set(data.cardId, { ...data });
  }

  private highlightCard(container: Phaser.GameObjects.Container, color: number, lineWidth: number): void {
    // 检查是否已经有高亮边框
    let highlight = container.list.find(
      child => child instanceof Phaser.GameObjects.Rectangle && child.getData('isHighlight')
    ) as Phaser.GameObjects.Rectangle;

    if (!highlight) {
      // 创建高亮边框
      highlight = this.scene.add.rectangle(0, 0, CARD_WIDTH + 8, CARD_HEIGHT + 8, color, 0)
        .setStrokeStyle(lineWidth, color)
        .setData('isHighlight', true);
      container.addAt(highlight, 0);
    } else {
      // 更新现有高亮边框
      highlight.setStrokeStyle(lineWidth, color);
      highlight.setAlpha(1);
    }
  }

  private unhighlightCard(container: Phaser.GameObjects.Container): void {
    const highlight = container.list.find(
      child => child instanceof Phaser.GameObjects.Rectangle && child.getData('isHighlight')
    ) as Phaser.GameObjects.Rectangle;

    if (highlight) {
      highlight.setAlpha(0);
    }
  }

  onSpawn(data: CardSpawnData): Phaser.GameObjects.Container {
    const card = this.scene.state.cards[data.cardId];
    if (!card) {
      this.previousData.set(data.cardId, { ...data });
      return this.scene.add.container(0, 0);
    }

    const container = this.scene.add.container(0, 0);
    const pos = this.getCardPosition(data);
    container.x = pos.x;
    container.y = pos.y;

    // 创建卡牌视觉
    const cardVisual = this.createCardVisual(card);
    container.add(cardVisual);

    // 使卡牌可点击（设置矩形点击区域）
    const hitArea = new Phaser.Geom.Rectangle(-CARD_WIDTH / 2, -CARD_HEIGHT / 2, CARD_WIDTH, CARD_HEIGHT);
    container.setInteractive(hitArea, Phaser.Geom.Rectangle.Contains);
    
    // 悬停效果
    container.on('pointerover', () => {
      if (this.scene.uiState.value.selectedCard !== data.cardId) {
        container.setAlpha(0.8);
      }
    });
    
    container.on('pointerout', () => {
      container.setAlpha(1);
    });
    
    container.on('pointerdown', () => {
      this.scene.onCardClick(data.cardId);
    });

    // 初始状态为透明，然后淡入
    container.setAlpha(0);
    const tween = this.scene.tweens.add({
      targets: container,
      alpha: 1,
      duration: 300,
      ease: 'Power2',
    });
    this.scene.addTweenInterruption(tween);

    this.previousData.set(data.cardId, { ...data });
    return container;
  }

  onDespawn(obj: Phaser.GameObjects.Container): void {
    const tween = this.scene.tweens.add({
      targets: obj,
      alpha: 0,
      scale: 0.8,
      duration: 200,
      ease: 'Power2',
      onComplete: () => obj.destroy(),
    });
    this.scene.addTweenInterruption(tween);
  }

  private createCardVisual(card: Card): Phaser.GameObjects.Container {
    const container = this.scene.add.container(0, 0);

    const bg = this.scene.add.rectangle(0, 0, CARD_WIDTH, CARD_HEIGHT, 0xf9fafb, 1)
      .setStrokeStyle(2, 0x6b7280);
    container.add(bg);

    const title = this.scene.add.text(0, -CARD_HEIGHT / 2 + 15, card.id, {
      fontSize: '12px',
      fontFamily: 'Arial',
      color: '#1f2937',
    }).setOrigin(0.5);
    container.add(title);

    const grid = this.scene.add.graphics();
    const cellSize = 16;
    const gridWidth = 5 * cellSize;
    const gridHeight = 5 * cellSize;
    const gridStartX = -gridWidth / 2;
    const gridStartY = -gridHeight / 2 + 30;

    for (let row = 0; row < 5; row++) {
      for (let col = 0; col < 5; col++) {
        const x = gridStartX + col * cellSize;
        const y = gridStartY + row * cellSize;

        if (row === 2 && col === 2) {
          grid.fillStyle(0x3b82f6, 1);
          grid.fillCircle(x + cellSize / 2, y + cellSize / 2, cellSize / 3);
        } else {
          const isTarget = card.moveCandidates.some(m => m.dx === col - 2 && m.dy === 2 - row);
          if (isTarget) {
            grid.fillStyle(0xef4444, 0.6);
            grid.fillCircle(x + cellSize / 2, y + cellSize / 2, cellSize / 3);
          }
        }
      }
    }
    container.add(grid);

    const playerText = this.scene.add.text(0, CARD_HEIGHT / 2 - 15, card.startingPlayer, {
      fontSize: '10px',
      fontFamily: 'Arial',
      color: '#6b7280',
    }).setOrigin(0.5);
    container.add(playerText);

    return container;
  }
}