/**
 * Shared default zoo grid layout: row 1 building cells and 3 starter couples (row 2).
 * Used by state.js (defaultState) and prestige.js (doPrestige).
 */

import { LootTables } from "./loot-tables.js";
import { fillAnimalBlock } from "./placement.js";

/** Row 1 layout: (col, kind). Columns 1–6. */
const ROW1_LAYOUT = [
  [1, "research"],
  [2, "billeterie"],
  [3, "nursery"],
  [4, "reception"],
  [5, "food"],
  [6, "school"],
];

/**
 * Build default cells for row 1 (research, billeterie, nursery, reception, food, school).
 * @returns {Record<string, { kind: string, level: number }>}
 */
export function buildDefaultRow1Cells() {
  const cells = {};
  for (const [col, kind] of ROW1_LAYOUT) {
    cells[`${col}_1`] = { kind, level: 1 };
  }
  return cells;
}

/** Default animal ids for the 3 starter couples (one per biome: Meadow, Ocean, Mountain). */
export const STARTER_ANIMAL_IDS_BY_BIOME = ["c0_r0", "c5_r0", "c10_r0"];

/** Positions for the 6 starter animals (row 2, columns 1–6). */
export const STARTER_ANIMAL_POSITIONS = [[1, 2], [2, 2], [3, 2], [4, 2], [5, 2], [6, 2]];

/**
 * Place 3 breeding couples (6 animals) on the grid. Mutates state.grid.cells.
 * @param {import("./types.js").GameState} state
 */
export function addStarterAnimals(state) {
  const now = Math.floor(Date.now() / 1000);
  let idx = 0;
  for (const animalId of STARTER_ANIMAL_IDS_BY_BIOME) {
    const def = LootTables.Animals[animalId];
    if (def !== null && def !== undefined) {
      const w = def.cellsWide ?? 1;
      const h = def.cellsHigh ?? 1;
      for (let pair = 0; pair < 2 && idx < STARTER_ANIMAL_POSITIONS.length; pair++, idx++) {
        const [x, y] = STARTER_ANIMAL_POSITIONS[idx];
        fillAnimalBlock(state, x, y, {
          kind: "animal",
          id: animalId,
          mutation: "none",
          level: 1,
          placedAt: now,
          lastVisitedAt: now,
          lastFedAt: now,
          cellsWide: w,
          cellsHigh: h,
          fromOtherZoo: false,
        });
      }
    }
  }
}