import Phaser from 'phaser';
import type { BoopState, PlayerType } from '@/game/boop';
import type { ReadonlySignal } from '@preact/signals-core';

const BOARD_SIZE = 6;
const CELL_SIZE = 80;
const BOARD_OFFSET = { x: 80, y: 100 };

export { BOARD_SIZE, CELL_SIZE, BOARD_OFFSET };

export class BoardRenderer {
  private container: Phaser.GameObjects.Container;
  private gridGraphics: Phaser.GameObjects.Graphics;
  private turnText: Phaser.GameObjects.Text;
  private infoText: Phaser.GameObjects.Text;

  constructor(private scene: Phaser.Scene) {
    this.container = this.scene.add.container(0, 0);
    this.gridGraphics = this.scene.add.graphics();
    this.drawGrid();

    this.turnText = this.scene.add.text(
      BOARD_OFFSET.x + (BOARD_SIZE * CELL_SIZE) / 2,
      BOARD_OFFSET.y + BOARD_SIZE * CELL_SIZE + 30,
      '',
      {
        fontSize: '22px',
        fontFamily: 'Arial',
        color: '#4b5563',
      }
    ).setOrigin(0.5);

    this.infoText = this.scene.add.text(
      BOARD_OFFSET.x + (BOARD_SIZE * CELL_SIZE) / 2,
      BOARD_OFFSET.y + BOARD_SIZE * CELL_SIZE + 60,
      'Click to place kitten. Cats win with 3 in a row!',
      {
        fontSize: '16px',
        fontFamily: 'Arial',
        color: '#6b7280',
      }
    ).setOrigin(0.5);
  }

  private drawGrid(): void {
    const g = this.gridGraphics;
    g.lineStyle(2, 0x6b7280);

    for (let i = 1; i < BOARD_SIZE; i++) {
      g.lineBetween(
        BOARD_OFFSET.x + i * CELL_SIZE,
        BOARD_OFFSET.y,
        BOARD_OFFSET.x + i * CELL_SIZE,
        BOARD_OFFSET.y + BOARD_SIZE * CELL_SIZE,
      );
      g.lineBetween(
        BOARD_OFFSET.x,
        BOARD_OFFSET.y + i * CELL_SIZE,
        BOARD_OFFSET.x + BOARD_SIZE * CELL_SIZE,
        BOARD_OFFSET.y + i * CELL_SIZE,
      );
    }

    g.strokePath();

    this.scene.add.text(BOARD_OFFSET.x + (BOARD_SIZE * CELL_SIZE) / 2, BOARD_OFFSET.y - 50, 'Boop Game', {
      fontSize: '32px',
      fontFamily: 'Arial',
      color: '#1f2937',
    }).setOrigin(0.5);
  }

  updateTurnText(player: PlayerType, state: BoopState): void {
    const current = player === 'white' ? state.players.white : state.players.black;
    const catsAvailable = current.catPool.remaining() + current.graduatedCount;

    this.turnText.setText(
      `${player.toUpperCase()}'s turn | Kittens: ${current.kittenPool.remaining()} | Cats: ${catsAvailable}`
    );
  }

  setupInput(
    state: ReadonlySignal<BoopState>,
    onCellClick: (row: number, col: number) => void
  ): void {
    for (let row = 0; row < BOARD_SIZE; row++) {
      for (let col = 0; col < BOARD_SIZE; col++) {
        const x = BOARD_OFFSET.x + col * CELL_SIZE + CELL_SIZE / 2;
        const y = BOARD_OFFSET.y + row * CELL_SIZE + CELL_SIZE / 2;

        const zone = this.scene.add.zone(x, y, CELL_SIZE, CELL_SIZE).setInteractive();

        zone.on('pointerdown', () => {
          const isOccupied = !!state.value.board.partMap[`${row},${col}`];
          if (!isOccupied && !state.value.winner) {
            onCellClick(row, col);
          }
        });
      }
    }
  }

  destroy(): void {
    this.container.destroy();
    this.gridGraphics.destroy();
    this.turnText.destroy();
    this.infoText.destroy();
  }
}