/**
 * The throwaway rig steps 17–20 share in the fixture scene: a behavior asset cloned off `mover` with the
 * step's graph, a crate to hold it, and a logic child that runs it.
 */

/**
 * Where each step parks its box. The fixture scene is shared, so two steps at the same y would
 * overlap and each would fail for reasons belonging to the other.
 */
export const LANES = {
  editorRun: 400,
  editorRunContainer: 800,
  editorRunEdits: 1200,
  pause: 300,
  nested: 700,
  keyRepeat: -300,
  stateMachine: -700,
  console: -1100,
  transform: -1500,
  font: -1900,
  particles: -2300,
  sound: -2700,
  tilemap: -3100,
  physics: -3500,
  shapes: -3900,
  queries: -4300,
  symbols: -4700,
  vectorArt: -5100,
  pixelArt: -5400,
  eyedropper: -5800,
  containerReference: -6200,
  nestedReference: -6600,
  video: -7000,
};

/**
 * Source for a `make(id, assetId, parentId, y, name)` factory, to paste inside a `mutate()`
 * string. It clones `scene.objects[0]`, so a new object carries whatever shape the fixture has.
 */
export const MAKE_OBJECT = `
    const make = (id, assetId, parentId, y, name = '') => {
      const o = structuredClone(scene.objects[0]);
      Object.assign(o, {
        id,
        assetId,
        name,
        position: { x: 0, y, z: 0 },
        parentId,
        overrides: {},
        instanceEdits: {},
      });
      return o;
    };`;

/**
 * Returns the created ids plus `remove()`, so a step's cleanup matches what it made. `front` puts the
 * asset at the head of the list: a row appended at the end scrolls out of `dragAsset`'s reach.
 */
export async function scaffoldBehavior(t, options) {
  const {
    assetId,
    name,
    graph,
    boxId,
    boxName = 'Box',
    logicId,
    y,
    front = false,
    props = { enabled: true, runInEditor: false },
  } = options;

  await t.mutate(`
    const p = __gm.state.project;
    const scene = __gm.state.activeScene;
    const asset = structuredClone(p.assets.find((a) => a.id === 'mover'));
    Object.assign(asset, {
      id: ${JSON.stringify(assetId)},
      name: ${JSON.stringify(name)},
      props: ${JSON.stringify(props)},
      variables: [],
      graph: ${JSON.stringify(graph)},
    });
    p.assets.${front ? 'unshift' : 'push'}(asset);
    ${MAKE_OBJECT}
    scene.objects.push(
      make(${JSON.stringify(boxId)}, 'crate', '', ${y}, ${JSON.stringify(boxName)}),
      make(${JSON.stringify(logicId)}, ${JSON.stringify(assetId)}, ${JSON.stringify(boxId)}, 0, ${JSON.stringify(name)}),
    );
  `);

  return {
    assetId,
    boxId,
    logicId,
    /** Removes everything this rig added and reports what survived (should be all zeroes). */
    async remove() {
      await t.evaluate('__gm.state.select(null)');
      await t.mutate(`
        const p = __gm.state.project;
        const scene = __gm.state.activeScene;
        const objects = ${JSON.stringify([boxId, logicId])};
        const assets = ${JSON.stringify([assetId])};
        scene.objects = scene.objects.filter((o) => !objects.includes(o.id));
        p.assets = p.assets.filter((a) => !assets.includes(a.id));
      `);
      return t.json(`{
        objects: __gm.sceneObjects().filter((o) => ${JSON.stringify([boxId, logicId])}.includes(o.id)).length,
        assets: __gm.state.project.assets.filter((a) => a.id === ${JSON.stringify(assetId)}).length,
      }`);
    },
  };
}

/** What each tab button reads – the text a check has to click to open it. */
export const TAB_LABELS = {
  scene: 'Scene',
  game: 'Game',
  graph: 'Behavior',
  statemachine: 'State machine',
  shader: 'Shader',
  texture: 'Texture',
  vectorart: 'Vector art',
  pixelart: 'Pixel art',
  animation: 'Animation',
  curve: 'Curve',
  tile: 'Tile',
  container: 'Container',
  list: 'List',
  particles: 'Particles',
  // Added at start-up by the demo plugin (plugins/demo-plugin.js), after every built-in tab.
  'plugin:assets': 'Assets',
};

/**
 * Opens a tab by clicking it, through the `»` menu when the row had to hide it. Since the tenth tab
 * (#73) that is the normal case at the test window's width: a plain `clickText('Container')` found
 * nothing and took the whole suite down with it.
 */
export async function openTab(t, tab) {
  // A kind of document has no tab of its own since #171; the hook shows the one the selection is about.
  if (DOCUMENT_KINDS.includes(tab)) {
    await t.evaluate(`__gm.showTab(${JSON.stringify(tab)})`);
    return;
  }
  const label = TAB_LABELS[tab];
  const row = await t.json('__gm.tabRow()');
  if (row.hidden.includes(tab)) {
    await t.clickText('»');
    await t.clickText(label);
    return;
  }
  // The label alone is not the tab: the toolbar labels its scene selector "Scene" too, and being
  // drawn first that is what `clickText` had been hitting – so the tab stayed where it was
  // (measured 2026-09-17: step 39 ended on the Autotile tab – now Tile – although it asks for the Scene tab).
  // The hit is therefore picked by the box the tab row reports for that tab.
  const entry = row.shown.find((e) => e.tab === tab);
  const hits = entry ? await t.json(`__gm.locateAll(${JSON.stringify(label)})`) : [];
  const hit = hits.find(
    (p) => p.x >= entry.x && p.x <= entry.right && p.y >= entry.y && p.y <= entry.y + entry.h,
  );
  if (hit) await t.click(hit.x, hit.y);
  else await t.clickText(label);
}

const DOCUMENT_KINDS = [
  'graph',
  'statemachine',
  'shader',
  'particles',
  'texture',
  'vectorart',
  'pixelart',
  'animation',
  'curve',
  'tile',
  'container',
  'variables',
  'management',
];

/**
 * Clicks the tab of an open document (`asset:<id>` or `values:<key>`), through the `»` menu when the row
 * hides it. The press lands left of the ×, on the name.
 */
export async function clickDocumentTab(t, doc) {
  const row = await t.json('__gm.tabRow()');
  const entry = row.shown.find((e) => e.tab === doc);
  if (entry) {
    await t.click(entry.x + (entry.close.x - entry.x) / 2, entry.y + entry.h / 2);
    return;
  }
  if (!row.hidden.includes(doc)) throw new Error(`no tab for ${doc}`);
  const label = await t.json(`(() => {
    const id = ${JSON.stringify(doc)};
    if (id.startsWith('values:')) return __gm.tabRow().labels?.[id] ?? null;
    const asset = __gm.state.project.assets.find((a) => 'asset:' + a.id === id);
    return asset ? asset.name : null;
  })()`);
  await t.clickText('»');
  const item = (await t.json('__gm.menuRows()')).find((r) => r === label);
  const at = await t.locate(item, true);
  await t.click(at.x, at.y);
}

/**
 * Picks an asset type from the already-open `+` menu: first its category, which opens the types of
 * that category beside the menu, then the type in there. A submenu could still outgrow a short
 * window, and `locate` refuses a row scrolled out of its list, so the first look is `find`, and a
 * hit outside the submenu (the centre tab "Texture") counts as a miss.
 */
export async function pickAssetType(t, label) {
  const category = await t.json(`__gm.addMenuCategory(${JSON.stringify(label)})`);
  if (!category) throw new Error(`no category of the + menu holds "${label}"`);
  await t.clickText(category);
  const box = await t.json('__gm.overlayRect()');
  let p = await t.find(label, true);
  let scrolled = false;
  const inMenu = (at) =>
    at && at.x >= box.x && at.x <= box.x + box.w && at.y >= box.y && at.y <= box.y + box.h - 4;
  if (box && !inMenu(p)) {
    await t.wheel(box.x + box.w / 2, box.y + box.h / 2, 300);
    p = await t.locate(label, true);
    scrolled = true;
  }
  await t.click(p.x, p.y);
  return { box, p, scrolled };
}

/**
 * A point of a panel (`panel` and `point` are hook expressions), scrolled into view first: a
 * collider's material rows sit below the fold of the inspector, and after the earlier steps the
 * hierarchy is long enough to hide this step's objects. A click beside the panel would land on
 * whatever is drawn there instead.
 */
export async function inView(t, panel, point) {
  for (let i = 0; i < 15; i++) {
    const rect = await t.json(panel);
    const at = await t.json(point);
    if (!rect) return null;
    if (at && at.y > rect.y + 8 && at.y < rect.y + rect.h - 8) return at;
    await t.wheel(rect.x + rect.w / 2, rect.y + rect.h / 2, at && at.y < rect.y ? -200 : 200);
    await t.settle();
  }
  return null;
}