import { same } from '../lib/harness.mjs';

/**
 * Groups in the hierarchy (#241), made, opened, filled, renamed and dissolved with the real menus,
 * clicks, keys and a real drag. The order rules and drops are unit-tested, this checks that the
 * panel and the dialog do what those rules say.
 * It works in a scene of its own, whose top level is g1, g2 (with the collider gc2), g3 and g5: the
 * checks compare whole lists of rows, and in the full run the fixture's scene holds whatever the
 * modules before left there. The scene is removed at the end.
 */
export async function hierarchyGroups(t) {
  const { check, json, evaluate, click, clickText, drag, press, typeText, select, showTab, undo, shot } = t;

  const SCENE = 'groups-52';
  const home = await json('__gm.state.project.activeSceneId');
  await t.mutate(`
    const p = __gm.state.project;
    const base = __gm.state.activeScene.objects[0];
    const make = (id, assetId, parentId, x, name) => {
      const o = structuredClone(base);
      Object.assign(o, { id, assetId, parentId, name, position: { x, y: 0, z: 0 }, overrides: {}, instanceEdits: {} });
      delete o.groupId;
      if ('enabled' in o) o.enabled = true;
      return o;
    };
    p.assets.push({ id: ${JSON.stringify(SCENE)}, type: 'scene', name: 'Groups 52', props: { backgroundColor: 0x22252c },
      objects: [
        make('g1', 'crate', '', -200, 'Crate 1'),
        make('g2', 'crate', '', 0, 'Crate 2'),
        make('gc2', 'collider', 'g2', 0, 'Collider'),
        make('g3', 'crate', '', 200, 'Crate 3'),
        make('g5', 'mover', '', 300, 'Mover'),
      ] });
    p.activeSceneId = ${JSON.stringify(SCENE)}`);

  const rowIds = () => json('__gm.hierarchyOrder()');
  const scene = () => json('__gm.state.activeScene');
  const selected = async () => (await json('__gm.state.selection'))?.objectIds ?? [];
  const rowAt = (id) => json(`__gm.hierarchyRow(${JSON.stringify(id)})`);
  const menuRow = async (label) => {
    const rows = (await json('__gm.menuRows()')) ?? [];
    return { rows, enabled: ((await json('__gm.menuEnabled()')) ?? [])[rows.indexOf(label)] };
  };

  await press('Escape');
  await showTab('scene');
  await evaluate('__gm.state.select(null); __gm.hierarchyCollapseAll()');

  // 52a. A child cannot go into a group: the entry is there, greyed out.
  await select({ kind: 'object', holderId: SCENE, objectId: 'gc2', objectIds: ['gc2'] });
  const child = await rowAt('gc2');
  await click(child.x, child.y, 'right');
  const childEntry = await menuRow('Group…');
  check('Group… is greyed out for a child', childEntry.enabled === false, JSON.stringify(childEntry));
  await press('Escape');
  await evaluate('__gm.state.select(null); __gm.hierarchyCollapseAll()');

  // 52b. Two top-level objects, the row menu's "Group 2 objects…", a name typed into the dialog.
  await select({ kind: 'object', holderId: SCENE, objectId: 'g1', objectIds: ['g1', 'g3'] });
  const first = await rowAt('g1');
  await click(first.x, first.y, 'right');
  const entry = await menuRow('Group 2 objects…');
  await clickText('Group 2 objects…');
  const dialogOpened = await json('__gm.groupDialogOpen()');
  await typeText('Crates');
  await press('Enter');
  const made = await scene();
  const group = made.groups?.[0];
  const row = `group:${group?.id}`;
  check(
    'Group 2 objects… asks for a name and makes the group of both',
    entry.enabled === true &&
      dialogOpened === true &&
      (await json('__gm.groupDialogOpen()')) === false &&
      made.groups?.length === 1 &&
      group.name === 'Crates' &&
      made.objects
        .filter((o) => o.groupId === group.id)
        .map((o) => o.id)
        .join() === 'g1,g3',
    JSON.stringify({ entry, dialogOpened, groups: made.groups }),
  );
  // g3 is listed with g1 now; with both members selected the group stays folded.
  check(
    'the group row stands where g1 stood, folded',
    same(await rowIds(), [row, 'g2', 'g5']),
    JSON.stringify(await rowIds()),
  );

  // 52c. A click on the group row selects the members, the chevron unfolds them.
  await evaluate('__gm.state.select(null)');
  const groupRow = await rowAt(row);
  await click(groupRow.x, groupRow.y);
  check(
    'clicking the group row selects all its members and leaves it folded',
    same(await selected(), ['g1', 'g3']) && same(await rowIds(), [row, 'g2', 'g5']),
    JSON.stringify({ selected: await selected(), rows: await rowIds() }),
  );
  const chevron = await json(`__gm.hierarchyChevron(${JSON.stringify(row)})`);
  await click(chevron.x, chevron.y);
  check(
    'its chevron lists the members below it',
    same(await rowIds(), [row, 'g1', 'g3', 'g2', 'g5']),
    JSON.stringify(await rowIds()),
  );
  await shot('52-group-open');

  // 52d. Dragging g5 onto the group row puts it in behind the last member; undo takes it out.
  const from = await rowAt('g5');
  const onto = await rowAt(row);
  await drag(from.x, from.y, onto.x, onto.y);
  check(
    'dragging an object onto the group row adds it to the group',
    same(await rowIds(), [row, 'g1', 'g3', 'g5', 'g2']) &&
      (await scene()).objects.find((o) => o.id === 'g5')?.groupId === group?.id,
    JSON.stringify(await rowIds()),
  );
  await undo();

  // 52e. Rename… from the group row's menu, typed over the selected old name.
  await click(groupRow.x, groupRow.y, 'right');
  const groupMenu = (await json('__gm.menuRows()')) ?? [];
  await clickText('Rename…');
  await typeText('Boxes');
  await press('Enter');
  check(
    "the group row's menu renames it",
    ['Select members', 'Rename…', 'Ungroup'].every((label) => groupMenu.includes(label)) &&
      (await scene()).groups?.[0]?.name === 'Boxes',
    JSON.stringify({ groupMenu, groups: (await scene()).groups }),
  );

  // 52f. Ungroup keeps the objects and gives back the list of before.
  await click(groupRow.x, groupRow.y, 'right');
  await clickText('Ungroup');
  const ungrouped = await scene();
  check(
    'Ungroup dissolves the group and keeps its members',
    ungrouped.groups === undefined &&
      !ungrouped.objects.some((o) => o.groupId) &&
      same(await rowIds(), ['g1', 'g2', 'g3', 'g5']),
    JSON.stringify({ groups: ungrouped.groups, rows: await rowIds() }),
  );

  // Ungroup, rename and group: three steps back to the fixture.
  await undo();
  await undo();
  await undo();
  const back = await scene();
  check(
    'undo takes each step back on its own, down to no group at all',
    back.groups === undefined && !back.objects.some((o) => 'groupId' in o),
    JSON.stringify(back.groups),
  );
  await evaluate('__gm.state.select(null); __gm.hierarchyCollapseAll()');

  // 52g. A plain click on a row that is already part of a multi-selection keeps only that row –
  // the other member as well as the primary one.
  await select({ kind: 'object', holderId: SCENE, objectId: 'g1', objectIds: ['g1', 'g2', 'g3'] });
  const other = await rowAt('g2');
  await click(other.x, other.y);
  const narrowedToOther = await selected();
  await select({ kind: 'object', holderId: SCENE, objectId: 'g1', objectIds: ['g1', 'g2', 'g3'] });
  const primary = await rowAt('g1');
  await click(primary.x, primary.y);
  const narrowedToPrimary = await selected();
  check(
    'clicking a selected row narrows the selection to that row',
    same(narrowedToOther, ['g2']) && same(narrowedToPrimary, ['g1']),
    JSON.stringify({ narrowedToOther, narrowedToPrimary }),
  );
  await evaluate('__gm.state.select(null); __gm.hierarchyCollapseAll()');

  // 52h. Shift-click takes every row from the last plain click to the clicked one; a second
  // Shift-click redraws the range from the same anchor, and it runs upwards just as well.
  // It starts on g2: 52g's last click hit g1, and a second one there would count as a double click.
  const clickRow = async (id, modifiers) => {
    const at = await rowAt(id);
    await click(at.x, at.y, 'left', modifiers);
  };
  await clickRow('g2');
  await clickRow('g5', { shift: true });
  const down = await selected();
  const primaryAfter = (await json('__gm.state.selection'))?.objectId;
  await clickRow('g1', { shift: true });
  const up = await selected();
  check(
    'Shift-click selects the rows in between',
    same([...down].sort(), ['g2', 'g3', 'g5']) &&
      primaryAfter === 'g5' &&
      same([...up].sort(), ['g1', 'g2']) &&
      same(await rowIds(), ['g1', 'g2', 'g3', 'g5']),
    JSON.stringify({ down, primaryAfter, up, rows: await rowIds() }),
  );
  await evaluate('__gm.state.select(null); __gm.hierarchyCollapseAll()');

  // 52i. A group "Pile" of g5 alone; its folder stands in the icon column of the objects, the
  // count left of it. Then g1 and g2 join it through the dialog's group dropdown.
  await select({ kind: 'object', holderId: SCENE, objectId: 'g5', objectIds: ['g5'] });
  const lone = await rowAt('g5');
  await click(lone.x, lone.y, 'right');
  await clickText('Group…');
  await typeText('Pile');
  await press('Enter');
  const pile = (await scene()).groups?.[0];
  const pileRow = `group:${pile?.id}`;
  const folder = await json(`__gm.hierarchyIcon(${JSON.stringify(pileRow)})`);
  const count = await json(`__gm.hierarchyHint(${JSON.stringify(pileRow)})`);
  const objectIcon = await json('__gm.hierarchyIcon("g1")');
  check(
    "a group's folder stands in the objects' icon column, its count left of it",
    folder !== null &&
      objectIcon !== null &&
      count !== null &&
      Math.abs(folder.x - objectIcon.x) < 1 &&
      count.x < folder.x - 8,
    JSON.stringify({ folder, objectIcon, count }),
  );
  await select({ kind: 'object', holderId: SCENE, objectId: 'g1', objectIds: ['g1', 'g2'] });
  const joiner = await rowAt('g1');
  await click(joiner.x, joiner.y, 'right');
  await clickText('Group 2 objects…');
  await clickText('New group');
  const choices = (await json('__gm.menuRows()')) ?? [];
  // The last "Pile" drawn is the menu's, above the hierarchy row of the same name.
  const pick = await json('__gm.locate("Pile", true)');
  await click(pick.x, pick.y);
  await shot('52-join-group');
  await clickText('Add');
  const joined = await scene();
  check(
    'the Group dialog puts the objects into an existing group picked from its dropdown',
    same(choices, ['New group', 'Pile']) &&
      joined.groups?.length === 1 &&
      same(
        joined.objects.filter((o) => o.groupId === pile?.id).map((o) => o.id),
        ['g1', 'g2', 'g5'],
      ),
    JSON.stringify({ choices, groups: joined.groups, objects: joined.objects.map((o) => [o.id, o.groupId]) }),
  );
  await undo();

  // 52j. Dragging one row of a multi-selection takes the others along – here onto the group row.
  await select({ kind: 'object', holderId: SCENE, objectId: 'g1', objectIds: ['g1', 'g2'] });
  const grab = await rowAt('g2');
  const into = await rowAt(pileRow);
  await drag(grab.x, grab.y, into.x, into.y);
  const dragged = await scene();
  const inPile = dragged.objects.filter((o) => o.groupId === pile?.id).map((o) => o.id);
  await undo();
  const undone = await scene();
  check(
    'dragging a selected row moves the whole selection, in one undo step',
    same(inPile, ['g5', 'g1', 'g2']) &&
      same(
        undone.objects.filter((o) => o.groupId === pile?.id).map((o) => o.id),
        ['g5'],
      ),
    JSON.stringify({ inPile, undone: undone.objects.map((o) => [o.id, o.groupId]) }),
  );
  await undo();
  check(
    'undo takes the group of g5 back too',
    (await scene()).groups === undefined,
    JSON.stringify((await scene()).groups),
  );
  await evaluate('__gm.state.select(null); __gm.hierarchyCollapseAll()');
  await t.mutate(`
    const p = __gm.state.project;
    p.activeSceneId = ${JSON.stringify(home)};
    p.assets = p.assets.filter((a) => a.id !== ${JSON.stringify(SCENE)})`);
  await t.saved();
}