import { test } from 'node:test';
import assert from 'node:assert/strict';
import { join } from 'node:path';
import { mkdtempSync, mkdirSync, writeFileSync, rmSync } from 'node:fs';
import { tmpdir } from 'node:os';
import { ROOT } from '../lib/paths.mjs';
import { loadSource, SourceError } from '../ui-migration/gameabc-source.mjs';

const REAL_SOURCE = join(ROOT, '..', 'projects', 'Game_Surface_3', 'output');

function fakeSource(overrides = {}) {
  const dir = mkdtempSync(join(tmpdir(), 'gameabc-src-'));
  const files = {
    'gameabc_Object.json': {
      ObjectList: [
        {},
        { Property: { ObjectID: 1, ObjectType: 2, ObjectName: '背景', Left: 0, Top: 0, Width: 1280, Height: 720, BelongLayerID: 1, IndexOfLayer: 1, ImageFileID: 1, FrameStyle: 0, FrameIndex: 0, L9: 0, T9: 0, R9: 0, B9: 0, GroupID: 1, VoiceFileID: 0, TimerInterval: 0 }, Event: { mousedown: 1, mouseup: 1 } },
      ],
    },
    'gameabc_Layer.json': { LayerList: [{}, { Property: { LayerID: 1, LayerName: 'Logo_Layer' }, ObjectList: [1] }] },
    'gameabc_GroupList.json': { GroupList: [{ GroupID: 1, ObjectList: [1] }] },
    'gameabc_Image.json': { ImageFileList: [{}, { id: 1, w_all: 1280, h_all: 720, w: 1, h: 1, frame_all: 1, bmp: '00001.png', w1: 1280, h1: 720 }] },
    ...overrides,
  };
  for (const [name, content] of Object.entries(files)) {
    writeFileSync(join(dir, name), JSON.stringify(content));
  }
  return dir;
}

test('loadSource 解析对象、层、组、图，并附上 events', () => {
  const dir = fakeSource();
  try {
    const s = loadSource(dir);
    assert.equal(s.objects.size, 1);
    assert.equal(s.objects.get(1).ObjectName, '背景');
    assert.deepEqual(s.objects.get(1).events, ['mousedown', 'mouseup']);
    assert.deepEqual(s.layers, [{ layerId: 1, name: 'Logo_Layer', objectIds: [1] }]);
    assert.deepEqual(s.groups, [{ groupId: 1, objectIds: [1] }]);
    assert.equal(s.images.get(1).bmp, '00001.png');
  } finally { rmSync(dir, { recursive: true, force: true }); }
});

test('loadSource 跳过源数据里的空占位槽 {}', () => {
  const dir = fakeSource();
  try {
    const s = loadSource(dir);
    assert.equal(s.objects.size, 1, '首个 {} 占位不应变成对象');
    assert.equal(s.layers.length, 1);
  } finally { rmSync(dir, { recursive: true, force: true }); }
});

test('loadSource 对网格与帧数不符的图显式抛错（不兜底）', () => {
  const dir = fakeSource({
    'gameabc_Image.json': { ImageFileList: [{}, { id: 1, w_all: 100, h_all: 100, w: 3, h: 4, frame_all: 11, bmp: 'bad.png', w1: 33, h1: 25 }] },
  });
  try {
    assert.throws(() => loadSource(dir), SourceError);
    assert.throws(() => loadSource(dir), /bad\.png/);
  } finally { rmSync(dir, { recursive: true, force: true }); }
});

test('loadSource 对缺失文件显式抛错', () => {
  const dir = mkdtempSync(join(tmpdir(), 'gameabc-empty-'));
  try {
    assert.throws(() => loadSource(dir), /缺少源数据文件/);
  } finally { rmSync(dir, { recursive: true, force: true }); }
});

test('loadSource 在真实源数据上得到已知规模（回归护栏）', () => {
  const s = loadSource(REAL_SOURCE);
  assert.equal(s.objects.size, 991, '对象总数');
  assert.equal(s.layers.length, 55, '界面数');
  assert.equal(s.groups.length, 80, '分组数');
  assert.equal(s.images.size, 439, '图片数');
  const multi = [...s.images.values()].filter((i) => i.frame_all > 1);
  assert.equal(multi.length, 139, '多帧图数');
});