/**
 * `Key was pressed` and `Key was released` answer the edges `On key down` and `On key up` fire on,
 * as values a flow can ask for. Driven through a real world, so the frame they hold for is the
 * one the run really ends.
 */
import { describe, expect, it } from 'vitest';
import type { BehaviorAsset } from '../../src/core/model/Asset';
import { graphEditor, makeBehavior, makeSpriteScene, place, startWorld, type SceneFixture } from '../helpers';

function scene(): SceneFixture & { behavior: BehaviorAsset } {
  const f = makeSpriteScene('Box');
  const behavior = makeBehavior(f, 'Logic');
  const box = place(f, f.spriteId, { x: 0, y: 0 });
  place(f, behavior.id, { x: 0, y: 0 }, box);
  return { ...f, behavior };
}

/** Wires `On update → Branch(<node>.<port>) → Log(message)`: one log entry per frame the node says yes. */
function logWhile(
  f: SceneFixture & { behavior: BehaviorAsset },
  type: string,
  port: string,
  key: string,
  message: string,
): void {
  const edit = graphEditor(f, f.behavior);
  const update = edit.addNode('OnUpdate');
  const asked = edit.addNode(type, { key });
  const branch = edit.addNode('Branch');
  const log = edit.addNode('Log', { message });
  edit.connect(update, 'exec', branch, 'exec');
  edit.connect(asked, port, branch, 'condition');
  edit.connect(branch, 'then', log, 'exec');
}

describe('Key was pressed', () => {
  it('is true in the frame the key goes down and in no other', () => {
    const f = scene();
    logWhile(f, 'KeyWasPressed', 'pressed', 'a', 'pressed');
    const { world, input, frame } = startWorld(f, { behaviors: true });

    frame();
    expect(world.log).toEqual([]);

    input.press('a');
    frame();
    expect(world.log).toEqual(['pressed']);

    frame();
    frame();
    expect(world.log).toEqual(['pressed']);
  });

  it("does not count the browser's own repeat of a held key as a new press", () => {
    const f = scene();
    logWhile(f, 'KeyWasPressed', 'pressed', 'a', 'pressed');
    const { world, input, frame } = startWorld(f, { behaviors: true });

    input.press('a');
    frame();
    input.press('a');
    frame();
    expect(world.log).toEqual(['pressed']);

    input.release('a');
    input.press('a');
    frame();
    expect(world.log).toEqual(['pressed', 'pressed']);
  });

  it('answers in the same frame as On key down', () => {
    const f = scene();
    logWhile(f, 'KeyWasPressed', 'pressed', 'a', 'value');
    const edit = graphEditor(f, f.behavior);
    edit.connect(
      edit.addNode('OnKeyDown', { key: 'a' }),
      'exec',
      edit.addNode('Log', { message: 'event' }),
      'exec',
    );
    const { world, input, frame } = startWorld(f, { behaviors: true });

    input.press('a');
    frame();
    expect([...world.log].sort()).toEqual(['event', 'value']);
    frame();
    expect(world.log).toHaveLength(2);
  });

  it('takes "a" and "A" for one key and leaves another key alone', () => {
    const f = scene();
    logWhile(f, 'KeyWasPressed', 'pressed', 'a', 'pressed');
    const { world, input, frame } = startWorld(f, { behaviors: true });

    input.press('b');
    frame();
    expect(world.log).toEqual([]);

    input.press('A');
    frame();
    expect(world.log).toEqual(['pressed']);
  });

  it('reads the key on the node the same way, whichever case it was saved in', () => {
    const f = scene();
    logWhile(f, 'KeyWasPressed', 'pressed', 'A', 'pressed');
    logWhile(f, 'KeyWasReleased', 'released', 'A', 'released');
    const { world, input, frame } = startWorld(f, { behaviors: true });

    input.press('a');
    frame();
    input.release('a');
    frame();
    expect(world.log).toEqual(['pressed', 'released']);
  });

  it('stays false while the key is only released', () => {
    const f = scene();
    logWhile(f, 'KeyWasPressed', 'pressed', 'a', 'pressed');
    const { world, input, frame } = startWorld(f, { behaviors: true });

    input.press('a');
    frame();
    input.release('a');
    frame();
    expect(world.log).toEqual(['pressed']);
  });
});

describe('Key was released', () => {
  it('is true in the frame the key comes up and in no other', () => {
    const f = scene();
    logWhile(f, 'KeyWasReleased', 'released', 'a', 'released');
    const { world, input, frame } = startWorld(f, { behaviors: true });

    input.press('a');
    frame();
    frame();
    expect(world.log).toEqual([]);

    input.release('a');
    frame();
    expect(world.log).toEqual(['released']);

    frame();
    expect(world.log).toEqual(['released']);
  });

  it('stays false for a key that was never down', () => {
    const f = scene();
    logWhile(f, 'KeyWasReleased', 'released', 'a', 'released');
    const { world, input, frame } = startWorld(f, { behaviors: true });

    input.release('a');
    frame();
    expect(world.log).toEqual([]);
  });

  it('sees a press and a release inside one frame as both', () => {
    const f = scene();
    logWhile(f, 'KeyWasPressed', 'pressed', 'a', 'pressed');
    logWhile(f, 'KeyWasReleased', 'released', 'a', 'released');
    const { world, input, frame } = startWorld(f, { behaviors: true });

    input.press('a');
    input.release('a');
    frame();
    expect([...world.log].sort()).toEqual(['pressed', 'released']);
  });

  it('is true for every held key when the window loses the keyboard', () => {
    const f = scene();
    logWhile(f, 'KeyWasReleased', 'released', 'a', 'released');
    const { world, input, frame } = startWorld(f, { behaviors: true });

    input.press('a');
    frame();
    input.releaseAll();
    frame();
    expect(world.log).toEqual(['released']);
  });
});