/**
 * The two pure halves of the `asset` property kind: how a stored id reads, and which assets a
 * picker may offer for it. Used by the inspector row and the graph node view alike.
 */
import { describe, expect, it } from 'vitest';
import { CreateAssetCommand } from '../../src/core/commands/assetCommands';
import { BUILT_IN_NODES } from '../../src/core/graph/nodes';
import type { AssetType } from '../../src/core/model/AssetTypes';
import type { Project } from '../../src/core/model/Project';
import { assetChoiceLabel, assetRefChoices, assetRefLabel } from '../../src/core/properties/assetRef';
import { makeProject, type ProjectFixture } from '../helpers';

function add(fixture: ProjectFixture, type: AssetType, name: string): string {
  const command = new CreateAssetCommand(type, name);
  fixture.stack.execute(command);
  return command.asset.id;
}

/** A project holding one asset of every type, each named after its type. */
function oneOfEach(): { project: Project; ids: Record<AssetType, string> } {
  const fixture = makeProject();
  const types: AssetType[] = [
    'scene',
    'camera',
    'sprite',
    'text',
    'behavior',
    'collider',
    'container',
    'texture',
  ];
  const ids = Object.fromEntries(types.map((type) => [type, add(fixture, type, type)])) as Record<
    AssetType,
    string
  >;
  return { project: fixture.project, ids };
}

describe('assetRefLabel', () => {
  it('reads as the referenced asset name', () => {
    const fixture = makeProject();
    const id = add(fixture, 'sprite', 'Coin');
    expect(assetRefLabel(fixture.project, id)).toBe('Coin');
  });

  it('reads as "None" when nothing is referenced', () => {
    expect(assetRefLabel(makeProject().project, '')).toBe('None');
  });

  it('keeps showing the id of a reference that no longer resolves', () => {
    expect(assetRefLabel(makeProject().project, 'gone')).toBe('gone?');
  });

  it('marks a deleted asset as dangling rather than falling back to "None"', () => {
    const fixture = makeProject();
    const id = add(fixture, 'sprite', 'Coin');
    fixture.stack.undo();
    expect(assetRefLabel(fixture.project, id)).toBe(`${id}?`);
  });

  it('dangles without a project, but the empty reference is still "None"', () => {
    expect(assetRefLabel(null, 'x')).toBe('x?');
    expect(assetRefLabel(null, '')).toBe('None');
  });
});

describe('assetRefChoices', () => {
  it('offers every placeable asset when no types are given', () => {
    const { project } = oneOfEach();
    expect(assetRefChoices(project).map((a) => a.type)).toEqual([
      'behavior',
      'camera',
      'collider',
      'container',
      'sprite',
      'text',
    ]);
  });

  it('never offers a scene or a texture as a placeable asset', () => {
    const { project } = oneOfEach();
    const types = assetRefChoices(project).map((a) => a.type);
    expect(types).not.toContain('scene');
    expect(types).not.toContain('texture');
  });

  it('offers exactly the given types, placeable or not', () => {
    const { project, ids } = oneOfEach();
    expect(assetRefChoices(project, ['texture']).map((a) => a.id)).toEqual([ids.texture]);
    expect(assetRefChoices(project, ['scene', 'sprite']).map((a) => a.id)).toEqual([ids.scene, ids.sprite]);
  });

  it('offers nothing when no asset has one of the given types', () => {
    const fixture = makeProject();
    add(fixture, 'sprite', 'Coin');
    expect(assetRefChoices(fixture.project, ['texture'])).toEqual([]);
  });

  it('sorts by name, not by creation order', () => {
    const fixture = makeProject();
    add(fixture, 'sprite', 'Zebra');
    add(fixture, 'sprite', 'Apple');
    add(fixture, 'text', 'Mango');
    expect(assetRefChoices(fixture.project).map((a) => a.name)).toEqual(['Apple', 'Mango', 'Zebra']);
  });

  it('sorts namesakes by type so the order does not depend on creation order', () => {
    const fixture = makeProject();
    add(fixture, 'text', 'Coin');
    add(fixture, 'sprite', 'Coin');
    expect(assetRefChoices(fixture.project).map(assetChoiceLabel)).toEqual(['Coin (sprite)', 'Coin (text)']);
  });

  it('leaves the asset order of the project alone', () => {
    const fixture = makeProject();
    add(fixture, 'sprite', 'Zebra');
    add(fixture, 'sprite', 'Apple');
    assetRefChoices(fixture.project);
    expect(fixture.project.assets.map((a) => a.name)).toEqual(['Zebra', 'Apple']);
  });
});

describe('node asset params', () => {
  // Guards against the old second notion of an asset reference: an enum with empty options
  // that the graph inspector filled in.
  it('use the asset kind and offer every placeable asset', () => {
    const params = BUILT_IN_NODES.flatMap((def) => def.params).filter((p) => p.key === 'asset');
    expect(params.length).toBeGreaterThan(0);
    for (const param of params) {
      expect(param.kind).toBe('asset');
      expect(param.kind === 'asset' && param.assetTypes).toBeUndefined();
    }
  });
});