/**
 * Struct assets as types (#253), with the real mouse: a Struct asset made from the + menu and its
 * fields declared in the inspector, a behavior's struct variable typed by it, an `Expand` pointed at
 * it through its Type setting – then a field of the asset renamed, and the new name has to show up
 * in the variable, in a placed object's override and on the `Expand` port with its edge. "Make
 * struct type" turns a struct's own fields into an asset; deleting the asset leaves the fields.
 *
 * Everything it adds carries an `st54` id or is an asset it made, and goes again at the end.
 */
import { inView, MAKE_OBJECT } from './lib/scaffold.mjs';

export async function structTypes(t) {
  const {
    check,
    json,
    evaluate,
    mutate,
    click,
    clickText,
    press,
    typeText,
    sleep,
    settle,
    shot,
    select,
    undo,
  } = t;
  const inOverlay = async (text) => {
    const box = await json('__gm.overlayRect()');
    const hits = (await json(`__gm.locateAll(${JSON.stringify(text)})`)) ?? [];
    return (
      hits.find((h) => h.x >= box.x && h.x <= box.x + box.w && h.y >= box.y && h.y <= box.y + box.h) ?? null
    );
  };
  const press_ = async (at, what) => {
    if (!at) throw new Error(`nothing to click: ${what}`);
    await click(at.x, at.y);
    await sleep(150);
  };
  /** A menu entry, always the last drawn: the panels behind a menu carry the same words. */
  const pick = async (label) => press_(await json(`__gm.locate(${JSON.stringify(label)}, true)`), label);
  /**
   * Types into the text field showing `text`, replacing it. The rightmost hit: the inspector is the
   * right-hand panel, and an open graph shows the same names on its ports.
   */
  const retype = async (text, next) => {
    const hits = (await json(`__gm.locateAll(${JSON.stringify(text)})`)) ?? [];
    await press_(hits.sort((a, b) => b.x - a.x)[0], text);
    await press('a', { ctrl: true });
    await typeText(next);
    await press('Enter');
    await sleep(150);
  };
  const asset = (id) => json(`__gm.state.project.assets.find((a) => a.id === ${JSON.stringify(id)}) ?? null`);
  const chest = () => asset('st54-chest');
  const variable = async (key) => (await chest()).variables.find((v) => v.key === key);
  const override = () =>
    json("__gm.state.activeScene.objects.find((o) => o.id === 'st54-obj')?.overrides.drop ?? null");
  const expand = async () => (await chest()).graph.nodes.find((n) => n.id === 'st54-expand');
  const edgeFrom = async () =>
    (await chest()).graph.edges.find((e) => e.id === 'st54-edge')?.from.port ?? null;

  // A behavior with two structs holding their own fields, an Expand and a Log in its graph, and one
  // placed object overriding `drop`.
  await mutate(`
    const p = __gm.state.project;
    const scene = __gm.state.activeScene;
    p.assets.push({
      id: 'st54-chest',
      type: 'behavior',
      name: 'Chest 54',
      props: { enabled: true, runInEditor: false, drop: { Title: 'Gem' }, bag: { Gold: 5 } },
      variables: [
        { key: 'drop', label: 'drop', kind: 'struct', default: { Title: '' }, fields: [{ key: 'Title', kind: 'text' }] },
        { key: 'bag', label: 'bag', kind: 'struct', default: { Gold: 0 }, fields: [{ key: 'Gold', kind: 'number' }] },
      ],
      graph: {
        nodes: [
          { id: 'st54-expand', type: 'ExpandStruct', x: 0, y: 0, params: {} },
          { id: 'st54-log', type: 'Log', x: 240, y: 0, params: {} },
        ],
        edges: [],
      },
    });
    ${MAKE_OBJECT}
    const placed = make('st54-obj', 'st54-chest', '', 400, 'Chest 54');
    placed.overrides = { drop: { Title: 'Ruby' } };
    scene.objects.push(placed);
  `);

  // 54a. The + menu makes a Struct; its inspector declares fields as a Variables asset declares
  //      variables, and each field has a default.
  await t.showTab('scene');
  await clickText('+');
  await clickText('Logics');
  const offered = (await json('__gm.menuRows()')) ?? [];
  // Should the submenu outgrow a short canvas, Struct is scrolled to; the lowest hit between the
  // box's sides is the entry, not the tab above it.
  await inView(
    t,
    '__gm.overlayRect()',
    `(() => {
      const box = __gm.overlayRect();
      const hits = (__gm.locateAll('Struct') ?? []).filter(
        (hit) => hit.x >= box.x && hit.x <= box.x + box.w && hit.y >= box.y,
      );
      return hits.sort((a, b) => a.y - b.y).at(-1) ?? null;
    })()`,
  );
  const entry = await inOverlay('Struct');
  check('the + menu offers Struct', offered.includes('Struct') && Boolean(entry), JSON.stringify(offered));
  if (!entry) return;
  await press_(entry, 'Struct');
  await settle();
  const lootId = (
    await json("__gm.state.project.assets.filter((a) => a.type === 'struct').map((a) => a.id)")
  ).at(-1);
  await mutate(`__gm.state.project.assets.find((a) => a.id === ${JSON.stringify(lootId)}).name = 'Loot 54'`);
  const row = await json(`__gm.assetRow(${JSON.stringify(lootId)})`);
  await press_(row, 'the Loot 54 row');
  check(
    'a new Struct selects itself and says it has no fields',
    (await t.has('FIELDS')) && (await t.has('+ Field')) && (await t.has('No fields yet.')),
  );
  await clickText('+ Field');
  await pick('Text');
  await retype('field1', 'Title');
  await clickText('+ Field');
  await pick('Number');
  await retype('field1', 'Amount');
  await press_(await json("__gm.inspectorField('Title')"), 'Title value');
  await typeText('Coin');
  await press('Enter');
  await press_(await json("__gm.inspectorField('Amount')"), 'Amount value');
  await press('a', { ctrl: true });
  await typeText('7');
  await press('Enter');
  await sleep(150);
  const loot = await asset(lootId);
  check(
    '+ Field, a new name and a value give the struct its fields and their defaults',
    JSON.stringify(loot.variables.map((v) => `${v.key}:${v.kind}`)) === '["Title:text","Amount:number"]' &&
      JSON.stringify(loot.props) === '{"Title":"Coin","Amount":7}',
    JSON.stringify({ variables: loot.variables.map((v) => v.key), props: loot.props }),
  );
  await shot('01-struct-fields');

  // 54b. A struct variable picks the type under its head. It takes the type's fields, keeps what
  //      fits of its value and cannot grow fields of its own any more.
  await select({ kind: 'asset', assetId: 'st54-chest' });
  await sleep(150);
  const addsBefore = ((await json("__gm.locateAll('+ Field')")) ?? []).length;
  const typeRows = ((await json("__gm.locateAll('Own fields')")) ?? []).sort((a, b) => a.y - b.y);
  check(
    'each struct variable has a Type row reading "Own fields"',
    typeRows.length === 2,
    JSON.stringify(typeRows),
  );
  await press_(typeRows[0], 'Type of drop');
  await pick('Loot 54');
  const drop = await variable('drop');
  const props = (await chest()).props;
  check(
    'picking Loot 54 gives drop its fields, keeps "Gem" and fills Amount with the default 7',
    drop.structType === lootId &&
      JSON.stringify(drop.fields.map((f) => f.key)) === '["Title","Amount"]' &&
      JSON.stringify(props.drop) === '{"Title":"Gem","Amount":7}',
    JSON.stringify({ drop, value: props.drop }),
  );
  check(
    'and the placed override takes the shape as well',
    JSON.stringify(await override()) === '{"Title":"Ruby","Amount":7}',
    JSON.stringify(await override()),
  );
  const addsAfter = ((await json("__gm.locateAll('+ Field')")) ?? []).length;
  check(
    'a typed struct offers no + Field, its row names the type',
    addsBefore === 2 && addsAfter === 1 && (await t.has('Loot 54')),
    JSON.stringify({ addsBefore, addsAfter }),
  );
  await shot('02-typed-variable');

  // 54c. Expand's Type setting points it at the asset: its ports are the fields.
  await select({ kind: 'node', assetId: 'st54-chest', nodeId: 'st54-expand' });
  await sleep(150);
  await press_(await json("__gm.inspectorField('Type')"), 'Type of Expand');
  // The asset picker names the kind after each asset.
  await pick('Loot 54 (struct)');
  const ports = (await expand()).ports ?? [];
  check(
    'Expand with the type has one output per field, and its fields are not edited there',
    JSON.stringify(ports.map((p) => p.key)) === '["Title","Amount"]' &&
      (await t.has('The fields of Loot 54. Change them there.')) &&
      !(await t.has('+ Field')),
    JSON.stringify(ports),
  );
  await mutate(`
    const graph = __gm.state.project.assets.find((a) => a.id === 'st54-chest').graph;
    graph.edges.push({ id: 'st54-edge', from: { node: 'st54-expand', port: 'Amount' }, to: { node: 'st54-log', port: 'message' } });
  `);
  await shot('03-typed-expand');

  // 54d. Renaming a field on the asset reaches every place of the type in one step, values kept.
  await select({ kind: 'asset', assetId: lootId });
  await sleep(150);
  await retype('Amount', 'Count');
  const renamed = {
    fields: (await variable('drop')).fields.map((f) => f.key),
    value: (await chest()).props.drop,
    override: await override(),
    ports: ((await expand()).ports ?? []).map((p) => p.key),
    edge: await edgeFrom(),
  };
  check(
    'renaming Amount to Count reaches the variable, its value, the override, the port and its edge',
    JSON.stringify(renamed) ===
      JSON.stringify({
        fields: ['Title', 'Count'],
        value: { Title: 'Gem', Count: 7 },
        override: { Title: 'Ruby', Count: 7 },
        ports: ['Title', 'Count'],
        edge: 'Count',
      }),
    JSON.stringify(renamed),
  );
  await undo();
  const back = {
    fields: (await variable('drop')).fields.map((f) => f.key),
    value: (await chest()).props.drop,
    override: await override(),
    edge: await edgeFrom(),
  };
  check(
    'one undo takes the rename back everywhere',
    JSON.stringify(back) ===
      JSON.stringify({
        fields: ['Title', 'Amount'],
        value: { Title: 'Gem', Amount: 7 },
        override: { Title: 'Ruby', Amount: 7 },
        edge: 'Amount',
      }),
    JSON.stringify(back),
  );

  // 54e. "Make struct type" turns the fields bag holds by itself into a Struct asset.
  await select({ kind: 'asset', assetId: 'st54-chest' });
  await sleep(150);
  await press_(await json("__gm.locate('Own fields')"), 'Type of bag');
  await pick('Make struct type');
  const bag = await variable('bag');
  const made = await asset(bag.structType ?? '');
  check(
    'Make struct type makes a Struct asset of bag, its value becoming the defaults',
    made?.type === 'struct' &&
      made.name === 'bag' &&
      JSON.stringify(made.props) === '{"Gold":5}' &&
      JSON.stringify((await chest()).props.bag) === '{"Gold":5}',
    JSON.stringify({ bag, made }),
  );

  // 54f. Deleting the type asks first and says what happens; the places keep the fields.
  const lootRow = await json(`__gm.assetRow(${JSON.stringify(lootId)})`);
  await click(lootRow.x, lootRow.y, 'right');
  await sleep(150);
  await pick('Delete…');
  const detail = '1 struct(s) and 1 node(s) use it and keep its fields as their own.';
  check('the delete dialog counts the places using the type', await t.has(detail));
  await shot('04-delete-dialog');
  await pick('Delete');
  const kept = await variable('drop');
  check(
    'after deleting, drop keeps Title and Amount and its value',
    (await asset(lootId)) === null &&
      JSON.stringify(kept.fields.map((f) => f.key)) === '["Title","Amount"]' &&
      JSON.stringify((await chest()).props.drop) === '{"Title":"Gem","Amount":7}',
    JSON.stringify(kept),
  );
  await select({ kind: 'asset', assetId: 'st54-chest' });
  await sleep(150);
  check(
    'and its Type row reads "Own fields" again, with + Field back',
    ((await json("__gm.locateAll('+ Field')")) ?? []).length === 1 && (await t.has('Own fields')),
  );

  // 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 !== 'st54-obj');
    const made = ${JSON.stringify(made?.id ?? '')};
    p.assets = p.assets.filter((a) => a.id !== 'st54-chest' && a.id !== made && a.id !== ${JSON.stringify(lootId)});
  `);
}