import { COLORS } from './renderer.js';

const THEMES = {
  default: {
    name: 'Standard',
    swatch: '#e8e0d4',
    colors: {
      wall: { exterior: 0xe8e0d4, interior: 0xf5f0eb },
      floor: { tile: 0xc8beb0, hardwood: 0xb5894e },
      ceiling: 0xfaf8f5,
      door: 0x8b6914,
      window: 0x87ceeb,
      windowFrame: 0xd0d0d0,
      grid: 0xcccccc,
      selected: 0x4a90d9
    },
    scene: { background: 0xf0f0f0, ambientIntensity: 0.6, directionalIntensity: 0.8 }
  },
  modern: {
    name: 'Modern',
    swatch: '#f5f5f5',
    colors: {
      wall: { exterior: 0xf5f5f5, interior: 0xffffff },
      floor: { tile: 0xe0e0e0, hardwood: 0xc4a882 },
      ceiling: 0xffffff,
      door: 0x333333,
      window: 0xa8d4f0,
      windowFrame: 0x666666,
      grid: 0xe0e0e0,
      selected: 0x2196f3
    },
    scene: { background: 0xfafafa, ambientIntensity: 0.7, directionalIntensity: 0.6 }
  },
  warm: {
    name: 'Warm',
    swatch: '#ddd0b8',
    colors: {
      wall: { exterior: 0xddd0b8, interior: 0xf0e8d8 },
      floor: { tile: 0xb8a890, hardwood: 0x9b6b3a },
      ceiling: 0xf5efe5,
      door: 0x6b4423,
      window: 0x8bc4e0,
      windowFrame: 0x8b7355,
      grid: 0xc8b8a0,
      selected: 0xd48b2c
    },
    scene: { background: 0xf5efe5, ambientIntensity: 0.5, directionalIntensity: 0.9 }
  },
  dark: {
    name: 'Dark',
    swatch: '#3a3a3a',
    colors: {
      wall: { exterior: 0x3a3a3a, interior: 0x4a4a4a },
      floor: { tile: 0x2a2a2a, hardwood: 0x5a4030 },
      ceiling: 0x333333,
      door: 0x5a4030,
      window: 0x4080b0,
      windowFrame: 0x555555,
      grid: 0x444444,
      selected: 0x64b5f6
    },
    scene: { background: 0x222222, ambientIntensity: 0.4, directionalIntensity: 1.0 }
  },
  scandinavian: {
    name: 'Scandi',
    swatch: '#f0ece4',
    colors: {
      wall: { exterior: 0xf0ece4, interior: 0xfaf6f0 },
      floor: { tile: 0xe8ddd0, hardwood: 0xd4b88c },
      ceiling: 0xffffff,
      door: 0xc4a87a,
      window: 0xc0ddf0,
      windowFrame: 0xb0b0b0,
      grid: 0xd8d8d8,
      selected: 0x5b9bd5
    },
    scene: { background: 0xf8f6f2, ambientIntensity: 0.65, directionalIntensity: 0.7 }
  }
};

/**
 * ThemeManager — applies visual themes by mutating COLORS and re-rendering.
 */
export class ThemeManager {
  constructor(renderer) {
    this.renderer = renderer;
    this.currentTheme = 'default';
  }

  applyTheme(themeId) {
    const theme = THEMES[themeId];
    if (!theme) return;
    this.currentTheme = themeId;

    // Mutate the shared COLORS object
    Object.assign(COLORS.wall, theme.colors.wall);
    Object.assign(COLORS.floor, theme.colors.floor);
    COLORS.ceiling = theme.colors.ceiling;
    COLORS.door = theme.colors.door;
    COLORS.window = theme.colors.window;
    COLORS.windowFrame = theme.colors.windowFrame;
    COLORS.grid = theme.colors.grid;
    COLORS.selected = theme.colors.selected;

    // Update scene background and lights
    this.renderer.scene.background.setHex(theme.scene.background);
    this.renderer.scene.traverse(child => {
      if (child.isAmbientLight) child.intensity = theme.scene.ambientIntensity;
      if (child.isDirectionalLight) child.intensity = theme.scene.directionalIntensity;
    });

    // Clear cached materials/geometry and re-render to pick up new colors
    this.renderer._clearFloor();
    this.renderer.showFloor(this.renderer.currentFloor);
  }

  getThemes() {
    return Object.entries(THEMES).map(([id, t]) => ({
      id,
      name: t.name,
      swatch: t.swatch
    }));
  }
}