/**
 * Picking an object of the same scene for an object variable (#258), with the real mouse: the
 * placed behavior offers None and the scene's objects, the pick is stored as the object's id and a
 * run reads the object itself. Removing that object drops the reference; undo brings it back. On the
 * behavior asset there is no scene, so the row still says "(null)".
 *
 * Everything it adds carries an `or57` id and goes again at the end.
 */
import { MAKE_OBJECT } from './lib/scaffold.mjs';

export async function objectReferences(t) {
  const { check, json, evaluate, mutate, click, press, sleep, shot, select, undo, stop } = t;
  const press_ = async (at, what) => {
    if (!at) throw new Error(`nothing to click: ${what}`);
    await click(at.x, at.y);
    await sleep(150);
  };
  const target = () =>
    json("__gm.state.activeScene.objects.find((o) => o.id === 'or57-obj')?.overrides.target ?? null");

  // On start the behavior logs the object its `target` names.
  const graph = {
    nodes: [
      { id: 'or57-start', type: 'OnStart', x: 0, y: 0, params: {} },
      {
        id: 'or57-vars',
        type: 'Variables',
        x: 0,
        y: 200,
        params: {},
        ports: [{ key: 'target', kind: 'object' }],
      },
      { id: 'or57-log', type: 'Log', x: 320, y: 0, params: {} },
    ],
    edges: [
      { id: 'or57-e1', from: { node: 'or57-start', port: 'exec' }, to: { node: 'or57-log', port: 'exec' } },
      {
        id: 'or57-e2',
        from: { node: 'or57-vars', port: 'target' },
        to: { node: 'or57-log', port: 'message' },
      },
    ],
  };
  await mutate(`
    const p = __gm.state.project;
    const scene = __gm.state.activeScene;
    p.assets.push({
      id: 'or57-aim',
      type: 'behavior',
      name: 'Aim 57',
      props: { enabled: true, runInEditor: false, target: { $object: '' } },
      variables: [{ key: 'target', label: 'target', kind: 'object', default: { $object: '' } }],
      graph: ${JSON.stringify(graph)},
    });
    ${MAKE_OBJECT}
    const sprite = p.assets.find((a) => a.type === 'sprite');
    scene.objects.push(make('or57-obj', 'or57-aim', '', 400, 'Aim 57'));
    scene.objects.push(make('or57-crate', sprite.id, '', 450, 'Crate 57'));
  `);
  const sceneId = await json('__gm.state.activeScene.id');

  // 57a. The behavior asset has no scene: its object variable only says "(null)".
  await select({ kind: 'asset', assetId: 'or57-aim' });
  await sleep(200);
  check(
    'on the behavior asset the object variable says (null)',
    (await json("__gm.locate('(null)')")) !== null,
  );

  // 57b. On the placed object the row is a dropdown: None, the object itself and the Crate. A click
  //      on the Crate stores its id.
  await select({ kind: 'object', holderId: sceneId, objectId: 'or57-obj' });
  await sleep(200);
  await press_(await json("__gm.inspectorField('target')"), 'the target field');
  const offered = (await json('__gm.overlayTexts()')) ?? [];
  await shot('01-menu');
  check(
    'the placed object offers None, itself and the other objects of the scene',
    ['None', 'Aim 57', 'Crate 57'].every((label) => offered.includes(label)),
    JSON.stringify(offered),
  );
  await press_(await json("__gm.locate('Crate 57', true)"), 'Crate 57 in the menu');
  const picked = await target();
  check(
    'picking the Crate stores its id and the row shows its name',
    JSON.stringify(picked) === JSON.stringify({ $object: 'or57-crate' }) &&
      (await json("__gm.locate('Crate 57')")) !== null,
    JSON.stringify(picked),
  );
  await shot('02-picked');

  // 57c. A run reads the object itself.
  await evaluate('__gm.state.select(null)');
  const logFrom = t.consoleLog.length;
  await t.play();
  await sleep(600);
  await stop();
  const logged = t.consoleLog
    .slice(logFrom)
    .filter((line) => line.startsWith('[behavior Aim 57]'))
    .map((line) => line.split(']').pop().trim());
  check('in a run the variable is the picked object', logged.includes('Crate 57'), JSON.stringify(logged));

  // 57d. Removing the Crate drops the reference with it; one undo brings both back.
  await select({ kind: 'object', holderId: sceneId, objectId: 'or57-crate' });
  await sleep(150);
  await press('Delete');
  await sleep(150);
  const dropped = await target();
  await undo();
  const back = await target();
  check(
    'removing the picked object drops the reference, undo brings it back',
    JSON.stringify(dropped) === JSON.stringify({ $object: '' }) &&
      JSON.stringify(back) === JSON.stringify({ $object: 'or57-crate' }),
    JSON.stringify({ dropped, back }),
  );

  // Clean up.
  await evaluate('__gm.state.select(null)');
  await mutate(`
    const p = __gm.state.project;
    const scene = __gm.state.activeScene;
    scene.objects = scene.objects.filter((o) => !o.id.startsWith('or57-'));
    p.assets = p.assets.filter((a) => a.id !== 'or57-aim');
  `);
}