// src/pages/agent-office/canvas/FurnitureRenderer.js

/**
 * 가구 프로시저럴 렌더러 — 테마 팔레트 기반
 * 각 가구 타입별 draw 함수, Y-sort를 위한 zY 반환
 */
export class FurnitureRenderer {
  constructor(furnitureList, tileSize) {
    this.furnitureList = furnitureList;
    this.tileSize = tileSize;
  }

  /**
   * 모든 가구를 Y-sort 순서로 반환 (에이전트와 함께 정렬하기 위함)
   * @returns {Array<{type, col, row, zY, draw: Function}>}
   */
  getRenderables(theme, scale, offsetX, offsetY) {
    const ts = this.tileSize * scale;
    return this.furnitureList.map(f => ({
      ...f,
      zY: f.row,
      draw: (ctx) => this._drawFurniture(ctx, f, theme, ts, offsetX, offsetY)
    }));
  }

  _drawFurniture(ctx, f, theme, ts, ox, oy) {
    const x = f.col * ts + ox;
    const y = f.row * ts + oy;

    switch (f.type) {
      case 'desk_monitor':  this._drawDesk(ctx, f, theme, ts, x, y); break;
      case 'meeting_table': this._drawMeetingTable(ctx, f, theme, ts, x, y); break;
      case 'sofa':          this._drawSofa(ctx, theme, ts, x, y); break;
      case 'coffee_machine':this._drawCoffeeMachine(ctx, theme, ts, x, y); break;
      case 'bookshelf':     this._drawBookshelf(ctx, f, theme, ts, x, y); break;
      case 'plant':         this._drawPlant(ctx, theme, ts, x, y); break;
      case 'water_cooler':  this._drawWaterCooler(ctx, theme, ts, x, y); break;
    }
  }

  _drawDesk(ctx, f, theme, ts, x, y) {
    // 책상 상판
    const dw = ts * 2;
    const dh = ts * 0.6;
    ctx.fillStyle = theme.furniture.desk;
    ctx.fillRect(x, y + ts * 0.2, dw, dh);
    // 책상 다리
    ctx.fillStyle = theme.wall.border;
    ctx.fillRect(x + ts * 0.1, y + dh + ts * 0.2, ts * 0.15, ts * 0.3);
    ctx.fillRect(x + dw - ts * 0.25, y + dh + ts * 0.2, ts * 0.15, ts * 0.3);

    // 모니터들
    const monCount = f.monitors || 1;
    const monW = ts * 0.5;
    const monH = ts * 0.4;
    const totalW = monCount * monW + (monCount - 1) * ts * 0.1;
    let monX = x + (dw - totalW) / 2;

    for (let i = 0; i < monCount; i++) {
      // 모니터 프레임
      ctx.fillStyle = theme.furniture.monitor;
      ctx.fillRect(monX, y - monH + ts * 0.2, monW, monH);
      // 화면
      ctx.fillStyle = theme.furniture.monitorScreen;
      ctx.fillRect(monX + ts * 0.05, y - monH + ts * 0.25, monW - ts * 0.1, monH - ts * 0.1);
      // 모니터 받침대
      ctx.fillStyle = theme.furniture.monitor;
      ctx.fillRect(monX + monW * 0.35, y + ts * 0.2 - ts * 0.05, monW * 0.3, ts * 0.08);
      monX += monW + ts * 0.1;
    }

    // 의자 (책상 아래)
    ctx.fillStyle = theme.furniture.chair;
    ctx.fillRect(x + dw * 0.35, y + ts, dw * 0.3, ts * 0.5);
    ctx.fillRect(x + dw * 0.3, y + ts * 0.8, dw * 0.4, ts * 0.25);

    // 에이전트별 악센트 소품
    if (f.accent === 'instrument') {
      // 음표 모양
      ctx.fillStyle = theme.ui.accent;
      ctx.fillRect(x + dw + ts * 0.2, y + ts * 0.3, ts * 0.1, ts * 0.5);
      ctx.beginPath();
      ctx.arc(x + dw + ts * 0.2, y + ts * 0.8, ts * 0.15, 0, Math.PI * 2);
      ctx.fill();
    } else if (f.accent === 'papers') {
      // 서류 더미
      ctx.fillStyle = '#ffffff';
      ctx.fillRect(x + dw + ts * 0.1, y + ts * 0.3, ts * 0.35, ts * 0.45);
      ctx.fillStyle = theme.text.label;
      for (let i = 0; i < 3; i++) {
        ctx.fillRect(x + dw + ts * 0.15, y + ts * 0.38 + i * ts * 0.1, ts * 0.25, ts * 0.02);
      }
    } else if (f.accent === 'briefcase') {
      ctx.fillStyle = '#8B4513';
      ctx.fillRect(x + dw + ts * 0.1, y + ts * 0.5, ts * 0.4, ts * 0.3);
      ctx.fillStyle = '#D4A06A';
      ctx.fillRect(x + dw + ts * 0.2, y + ts * 0.45, ts * 0.2, ts * 0.08);
    } else if (f.accent === 'dice') {
      ctx.fillStyle = '#ef4444';
      ctx.fillRect(x + dw + ts * 0.15, y + ts * 0.4, ts * 0.3, ts * 0.3);
      ctx.fillStyle = '#ffffff';
      ctx.beginPath();
      ctx.arc(x + dw + ts * 0.3, y + ts * 0.55, ts * 0.05, 0, Math.PI * 2);
      ctx.fill();
    }
  }

  _drawMeetingTable(ctx, f, theme, ts, x, y) {
    const w = (f.width || 4) * ts;
    const h = (f.height || 2) * ts;
    // 테이블 상판
    ctx.fillStyle = theme.furniture.table;
    ctx.fillRect(x + ts * 0.1, y + ts * 0.1, w - ts * 0.2, h - ts * 0.2);
    // 테이블 그림자
    ctx.fillStyle = 'rgba(0,0,0,0.15)';
    ctx.fillRect(x + ts * 0.15, y + h - ts * 0.1, w - ts * 0.25, ts * 0.1);
    // 의자들 (상하 4개씩)
    for (let i = 0; i < 4; i++) {
      const cx = x + ts * 0.5 + i * (w - ts) / 3;
      ctx.fillStyle = theme.furniture.chair;
      ctx.fillRect(cx, y - ts * 0.3, ts * 0.4, ts * 0.35);
      ctx.fillRect(cx, y + h - ts * 0.05, ts * 0.4, ts * 0.35);
    }
  }

  _drawSofa(ctx, theme, ts, x, y) {
    ctx.fillStyle = theme.furniture.sofa;
    ctx.fillRect(x, y, ts * 2, ts * 0.8);
    // 등받이
    ctx.fillStyle = theme.furniture.sofa;
    ctx.fillRect(x, y - ts * 0.3, ts * 2, ts * 0.35);
    // 쿠션 구분선
    ctx.strokeStyle = theme.wall.border;
    ctx.lineWidth = 1;
    ctx.beginPath();
    ctx.moveTo(x + ts, y);
    ctx.lineTo(x + ts, y + ts * 0.8);
    ctx.stroke();
  }

  _drawCoffeeMachine(ctx, theme, ts, x, y) {
    ctx.fillStyle = theme.furniture.coffee;
    ctx.fillRect(x + ts * 0.15, y, ts * 0.7, ts * 0.8);
    // 디스펜서
    ctx.fillStyle = theme.furniture.monitor;
    ctx.fillRect(x + ts * 0.25, y + ts * 0.15, ts * 0.5, ts * 0.3);
    // 커피 잔
    ctx.fillStyle = '#ffffff';
    ctx.fillRect(x + ts * 0.3, y + ts * 0.55, ts * 0.2, ts * 0.15);
    // 스팀
    ctx.strokeStyle = 'rgba(255,255,255,0.3)';
    ctx.lineWidth = 1;
    ctx.beginPath();
    ctx.moveTo(x + ts * 0.4, y + ts * 0.5);
    ctx.quadraticCurveTo(x + ts * 0.45, y + ts * 0.35, x + ts * 0.4, y + ts * 0.2);
    ctx.stroke();
  }

  _drawBookshelf(ctx, f, theme, ts, x, y) {
    const h = (f.height || 3) * ts;
    ctx.fillStyle = theme.furniture.shelf;
    ctx.fillRect(x, y, ts * 0.9, h);
    // 선반 및 책
    const bookColors = ['#aa4444', '#4444aa', '#44aa44', '#aaaa44', '#aa44aa', '#44aaaa'];
    const shelfCount = f.height || 3;
    for (let i = 0; i < shelfCount; i++) {
      const sy = y + i * ts + ts * 0.1;
      // 선반 판
      ctx.fillStyle = theme.furniture.shelf;
      ctx.fillRect(x, sy + ts * 0.7, ts * 0.9, ts * 0.05);
      // 책들
      for (let b = 0; b < 4; b++) {
        ctx.fillStyle = bookColors[(i * 4 + b) % bookColors.length];
        ctx.fillRect(x + ts * 0.05 + b * ts * 0.2, sy + ts * 0.1, ts * 0.15, ts * 0.6);
      }
    }
  }

  _drawPlant(ctx, theme, ts, x, y) {
    // 화분
    ctx.fillStyle = theme.decor.pot;
    ctx.fillRect(x + ts * 0.25, y + ts * 0.6, ts * 0.5, ts * 0.35);
    ctx.fillRect(x + ts * 0.2, y + ts * 0.55, ts * 0.6, ts * 0.1);
    // 잎
    ctx.fillStyle = theme.decor.plant;
    ctx.beginPath();
    ctx.ellipse(x + ts * 0.5, y + ts * 0.35, ts * 0.3, ts * 0.25, 0, 0, Math.PI * 2);
    ctx.fill();
    ctx.beginPath();
    ctx.ellipse(x + ts * 0.35, y + ts * 0.25, ts * 0.15, ts * 0.2, -0.3, 0, Math.PI * 2);
    ctx.fill();
    ctx.beginPath();
    ctx.ellipse(x + ts * 0.65, y + ts * 0.25, ts * 0.15, ts * 0.2, 0.3, 0, Math.PI * 2);
    ctx.fill();
  }

  _drawWaterCooler(ctx, theme, ts, x, y) {
    // 본체
    ctx.fillStyle = theme.furniture.shelf;
    ctx.fillRect(x + ts * 0.2, y + ts * 0.3, ts * 0.6, ts * 0.6);
    // 물통
    ctx.fillStyle = 'rgba(100,180,255,0.5)';
    ctx.fillRect(x + ts * 0.3, y, ts * 0.4, ts * 0.35);
    ctx.fillStyle = 'rgba(100,180,255,0.3)';
    ctx.beginPath();
    ctx.arc(x + ts * 0.5, y, ts * 0.2, 0, Math.PI * 2);
    ctx.fill();
  }
}