import { describe, expect, it } from 'vitest';
import type { Asset } from '../../src/core/model/Asset';
import { ASSET_TYPES, type AssetType } from '../../src/core/model/AssetTypes';
import { ASSET_CATEGORIES, ASSET_GROUPS, groupAssets } from '../../src/editor/panels/assetGroups';

let serial = 0;
const asset = (type: AssetType, name: string): Asset =>
  ({ id: `a${++serial}`, type, name, props: {} }) as unknown as Asset;

const groupsOf = (assets: readonly Asset[]) => groupAssets(assets).flatMap((c) => c.groups);
const shape = (assets: Asset[]) => groupsOf(assets).map((g) => [g.type, g.assets.map((a) => a.name)]);

describe('groupAssets (#176)', () => {
  it('puts every asset into the group of its type, and no empty group', () => {
    const assets = [asset('texture', 'Sheet'), asset('sprite', 'Hero'), asset('texture', 'Tiles')];
    expect(shape(assets)).toEqual([
      ['sprite', ['Hero']],
      ['texture', ['Sheet', 'Tiles']],
    ]);
  });

  it('puts the groups under their category, categories in their fixed order and none empty', () => {
    const assets = [
      asset('song', 'Tune'),
      asset('behavior', 'Mover'),
      asset('scene', 'Level'),
      asset('sprite', 'Hero'),
    ];
    expect(groupAssets(assets).map((c) => [c.category, c.groups.map((g) => g.type)])).toEqual([
      ['Basics', ['scene']],
      ['Visuals', ['sprite']],
      ['Logics', ['behavior']],
      ['Audio', ['song']],
    ]);
  });

  it('sorts the groups in a category by their heading, not by type or declaration order', () => {
    const types = [...ASSET_TYPES].reverse();
    const categories = groupAssets(types.map((t) => asset(t, 'x')));
    expect(categories.map((c) => c.category)).toEqual([...ASSET_CATEGORIES]);
    for (const { groups } of categories) {
      const headings = groups.map((g) => ASSET_GROUPS[g.type].name);
      expect(headings).toEqual([...headings].sort((a, b) => a.localeCompare(b)));
    }
    expect(categories.flatMap((c) => c.groups)).toHaveLength(ASSET_TYPES.length);
    // By heading: "State machine" sorts under S, the type key `statemachine` would not tell.
    const logic = categories
      .find((c) => c.category === 'Logics')!
      .groups.map((g) => ASSET_GROUPS[g.type].name);
    expect(logic.indexOf('Behavior')).toBeLessThan(logic.indexOf('State machine'));
    expect(logic.indexOf('State machine')).toBeLessThan(logic.indexOf('Struct'));
  });

  it('sorts the assets in a group by name, ignoring case and reading numbers as numbers', () => {
    const assets = ['Level 10', 'level 2', 'Boss', 'Level 1', 'arena'].map((n) => asset('scene', n));
    expect(shape(assets)).toEqual([['scene', ['arena', 'Boss', 'Level 1', 'level 2', 'Level 10']]]);
  });

  it('keeps the project order among equal names', () => {
    const first = asset('sprite', 'Coin');
    const second = asset('sprite', 'coin');
    expect(groupsOf([first, second])[0]!.assets).toEqual([first, second]);
    expect(groupsOf([second, first])[0]!.assets).toEqual([second, first]);
  });

  it('leaves the project list alone', () => {
    const assets = [asset('sprite', 'B'), asset('sprite', 'A')];
    groupAssets(assets);
    expect(assets.map((a) => a.name)).toEqual(['B', 'A']);
  });
});