import { MEETING_CENTER, ZONES } from "./constants";
import type { Point } from "./types";

export interface DeskSlot {
  x: number;
  y: number;
}

function gridSlots(
  zone: { x: number; y: number; width: number; height: number },
  cols: number,
  rows: number,
  padX: number,
  padTop: number,
  padBottom: number,
): DeskSlot[] {
  const availW = zone.width - padX * 2;
  const availH = zone.height - padTop - padBottom;
  const cellW = availW / cols;
  const cellH = availH / rows;
  const slots: DeskSlot[] = [];
  for (let row = 0; row < rows; row++) {
    for (let col = 0; col < cols; col++) {
      slots.push({
        x: Math.round(zone.x + padX + cellW * (col + 0.5)),
        y: Math.round(zone.y + padTop + cellH * (row + 0.5)),
      });
    }
  }
  return slots;
}

/** 6 fixed desks for main agents (3 × 2). */
export const DESK_SLOTS = gridSlots(ZONES.desk, 3, 2, 60, 66, 40);

/** 8 hot desks for subagents (4 × 2). */
export const HOT_DESK_SLOTS = gridSlots(ZONES.hotDesk, 4, 2, 50, 70, 36);

/** Standing spots in the lounge, between the sofas and the reception desk. */
export const LOUNGE_ANCHORS: Point[] = (() => {
  const lz = ZONES.lounge;
  return [
    { x: lz.x + 200, y: lz.y + 88 },
    { x: lz.x + 265, y: lz.y + 140 },
    { x: lz.x + 360, y: lz.y + 88 },
    { x: lz.x + 60, y: lz.y + 150 },
    { x: lz.x + 145, y: lz.y + 140 },
    { x: lz.x + 430, y: lz.y + 150 },
  ];
})();

/** Circular seats around the meeting table. */
export function meetingSeats(count: number, center: Point = MEETING_CENTER): Point[] {
  const radius = Math.min(74 + count * 6, 108);
  return Array.from({ length: count }, (_, i) => {
    const angle = (2 * Math.PI * i) / count - Math.PI / 2;
    return {
      x: Math.round(center.x + Math.cos(angle) * radius),
      y: Math.round(center.y + Math.sin(angle) * radius),
    };
  });
}