/**
 * 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,
};

/**
 * 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',
  animation: 'Animation',
  container: 'Container',
  list: 'List',
  particles: 'Particles',
};

/**
 * 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) {
  const row = await t.json('__gm.tabRow()');
  if (row.hidden.includes(tab)) {
    await t.clickText('»');
  }
  await t.clickText(TAB_LABELS[tab]);
}

/**
 * Picks an asset type from the already-open `+` menu. Since #43 the menu may grow to the height of
 * the canvas, so on this window every type is usually on screen at once; the scroll stays in as
 * insurance for a shorter window, where entries below the mask edge are still found by `locate`
 * but a click there lands on nothing. That is what the fourteenth type (`Variables`, #91) did to
 * `Font` and to step 30.
 */
export async function pickAssetType(t, label) {
  const box = await t.json('__gm.overlayRect()');
  let p = await t.locate(label, true);
  let scrolled = false;
  if (box && (!p || p.y > box.y + box.h - 4)) {
    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 };
}