import assert from 'node:assert/strict';
import { test } from 'node:test';
import { HexBoard } from '../src/board';
import { Game } from '../src/game';
import { PointerInput } from '../src/input';
import type { HexCellDef } from '../src/types';

const c = (id: string, q: number, r: number, clue?: number): HexCellDef => ({ id, q, r, clue });
const level13 = () => HexBoard.fromCells([c('a', 0, 0, 1), c('b', 1, 0), c('c', 0, 1), c('d', 1, 1, 4)], [['a', 'b']]);

function setup() {
  const b = level13();
  const g = new Game(b);
  const input = new PointerInput(g);
  const id = (s: string) => b.cellById(s).index;
  return { b, g, input, id };
}

test('按下起点、滑到邻格追加、滑回撤销、松手保留', () => {
  const { g, input, id } = setup();
  assert.equal(input.down(id('a'))[0].type, 'step');
  assert.ok(input.isDrawing);
  assert.equal(input.move(id('c'))[0].type, 'step');
  assert.deepEqual(input.move(id('c')), [], '同一格不重复触发');
  assert.equal(input.move(id('a'))[0].type, 'unstep');
  assert.equal(g.path.length, 1);
  input.move(id('c'));
  input.up();
  assert.equal(g.status, 'idle');
  assert.equal(g.path.length, 2);
});

test('滑向有墙的邻格 → wallHit 一次，路径不变', () => {
  const { g, input, id } = setup();
  input.down(id('a'));
  const ev = input.move(id('b'));
  assert.equal(ev.length, 1);
  assert.equal(ev[0].type, 'wallHit');
  assert.deepEqual(input.move(id('b')), [], '停在同一格不重复报');
  assert.equal(g.path.length, 1);
  // 指针逻辑上仍在末端：继续滑到 c 可追加
  assert.equal(input.move(id('c'))[0].type, 'step');
});

test('点末端继续、点前一格撤销、点旁边空格追加、点墙外邻格报撞墙', () => {
  const { g, input, id } = setup();
  input.down(id('a'));
  input.move(id('c'));
  input.up();
  assert.equal(input.down(id('c')).length, 0);
  assert.ok(input.isDrawing);
  input.up();
  assert.equal(input.down(id('a'))[0].type, 'unstep');
  assert.equal(g.path.length, 1);
  input.up();
  assert.equal(input.down(id('c'))[0].type, 'step', '点着走');
  input.up();
  // 路径 a,c；c 的邻居 b 无墙 → 追加；再从 b 去 a 已走 → 忽略
  assert.equal(input.down(id('b'))[0].type, 'step');
  input.up();
  // 从 a 起手时点 b：撞墙反馈
  input.cancel();
  g.apply({ type: 'reset' });
  input.down(id('a'));
  input.up();
  assert.equal(input.down(id('b'))[0].type, 'wallHit');
});

test('非法起手与空白按下', () => {
  const { input, id } = setup();
  assert.equal(input.down(id('b'))[0].type, 'rejectStart');
  assert.ok(!input.isDrawing);
  assert.deepEqual(input.down(-1), []);
  assert.deepEqual(input.move(id('a')), [], '没在画，move 无效');
});

test('过关后手势失效', () => {
  const { g, input, id } = setup();
  input.down(id('a'));
  input.move(id('c'));
  input.move(id('b'));
  const ev = input.move(id('d'));
  assert.ok(ev.some((e) => e.type === 'cleared'));
  assert.ok(!input.isDrawing);
  assert.equal(g.isCleared, true);
  assert.deepEqual(input.down(id('d')), []);
});