/**
 * 为「Windows 客户端 × Web 服务端」跨端集成验收准备一份**真实**目录：
 *   真实 VMD 动作 → 预处理成内部标准 33 点；真实 PMX 模型 → 转 VRM；
 *   场景 GLB（复用真实转换产物的几何）+ 契约 0.5.0 的物理参数。
 */
import { mkdirSync, openSync, readFileSync, rmSync, writeFileSync } from 'node:fs';
import { execFileSync } from 'node:child_process';
import { dirname, join } from 'node:path';

const API = process.env.API_BASE ?? 'http://127.0.0.1:3100';
// 样例目录与期望值输出路径都可通过环境变量覆盖（默认取仓库根的 示例文件/）
const SAMPLES = process.env.OPENDANCE_SAMPLES_DIR
  ?? new URL('../../../示例文件', import.meta.url).pathname;
const EXPECT_PATH = process.env.EXPECT_PATH ?? '/tmp/opendance-catalog-expect.json';
/** 用于把真实 PMX 转成 GLB（模拟"转换只产出 GLB"的入库形态） */
const ASSIMP_BIN = process.env.ASSIMP_BIN ?? '/usr/bin/assimp';
const SOURCE = {
  sourceType: 'original',
  sourceName: '跨端集成验收素材',
  sourceUrl: 'https://example.com/opendance',
  license: 'MIT',
  author: 'OpenDance QA',
};

async function request(method, path, { json, form } = {}) {
  const init = { method };
  if (json !== undefined) { init.headers = { 'Content-Type': 'application/json' }; init.body = JSON.stringify(json); }
  if (form !== undefined) init.body = form;
  const res = await fetch(`${API}${path}`, init);
  const text = await res.text();
  let body = null;
  try { body = text ? JSON.parse(text) : null; } catch { body = text; }
  return { status: res.status, body };
}

function fileForm(fields, filename, content, mime = 'application/octet-stream') {
  const form = new FormData();
  for (const [k, v] of Object.entries(fields)) form.append(k, String(v));
  form.append('file', new Blob([content], { type: mime }), filename);
  return form;
}

const must = (cond, what, extra = '') => {
  if (!cond) { console.error(`✗ ${what} ${extra}`); process.exit(1); }
  console.log(`  ✓ ${what}`);
};

const run = async () => {
  // ---------- 歌曲 ----------
  const song = await request('POST', '/api/songs', {
    json: { title: '霜雪千年', artist: '乐正绫 / 洛天依', album: '跨端验收', language: 'zh', durationMs: 96700, bpm: 120, difficulty: 3, ...SOURCE },
  });
  must(song.status === 201, '创建曲目', `${song.status} ${JSON.stringify(song.body)}`);
  const songId = song.body.id;

  // ---------- 动作：真实 VMD ----------
  const vmd = readFileSync(`${SAMPLES}/【动作】霜雪千年.vmd`);
  const motion = await request('POST', '/api/motions', {
    form: fileForm({ name: '霜雪千年（真实 VMD）', songId, autoPreprocess: false, ...SOURCE }, '霜雪千年.vmd', vmd, 'application/octet-stream'),
  });
  must(motion.status === 201, '上传真实 VMD 动作', `${motion.status} ${JSON.stringify(motion.body)}`);
  const motionId = motion.body.id;
  must(motion.body.format === 'vmd', `识别格式 vmd（实际 ${motion.body.format}）`);
  const pre = await request('POST', `/api/motions/${motionId}/preprocess`);
  must(pre.status === 200, '预处理为内部标准 33 点', `${pre.status} ${JSON.stringify(pre.body)}`);
  console.log(`    预处理结果：${JSON.stringify(pre.body)}`);

  // ---------- 模型：真实 PMX 压缩包 → VRM ----------
  const pmxZip = readFileSync(`${SAMPLES}/模型_初音未来Hatsune Miku_by_Boku_Wa_Luka.zip`);
  const model = await request('POST', '/api/models', {
    form: fileForm({ name: '初音未来（真实 PMX → VRM）', ...SOURCE }, 'miku.zip', pmxZip, 'application/zip'),
  });
  must(model.status === 201, '上传真实 PMX 压缩包', `${model.status} ${JSON.stringify(model.body)}`);
  const modelId = model.body.id;
  must(model.body.format === 'vrm', `转换产物格式 vrm（实际 ${model.body.format}）`);
  must(model.body.usable === true, '模型可用（humanoid 达标）', JSON.stringify(model.body.unusableReason));
  console.log(`    转换说明：${model.body.conversionNote}`);
  console.log(`    humanoid：${model.body.stats?.humanoidMapped}/${model.body.stats?.humanoidTotal}，可驱动=${model.body.stats?.drivable}`);

  // ---------- 场景：真实 GLB（复用刚转换出的 VRM 几何）+ 物理参数 ----------
  const glbRes = await fetch(`${API}${model.body.fileUrl}`);
  const glbBytes = Buffer.from(await glbRes.arrayBuffer());
  must(glbBytes.subarray(0, 4).toString('ascii') === 'glTF', `取回模型 GLB（${glbBytes.length} 字节）`);
  // 作为场景上传时补一个按客户端 colliders:auto 约定命名的碰撞节点不方便，直接用 mesh 模式
  const sceneConfig = {
    physics: {
      gravity: { x: 0, y: -3.5, z: 0 },
      wind: {
        base: { x: 2, y: 0, z: -1 },
        gustAmplitude: 4,
        gustFrequency: 0.5,
        gustDirection: { x: 1, y: 0, z: 0 },
        space: 'world',
      },
      ground: { friction: 0.8, restitution: 0.1, slopeLimit: 30 },
      colliders: 'mesh',
    },
    environment: { ambientColor: '#112233', ambientIntensity: 2, fogDensity: 0.2 },
    spawnPoints: [{ x: 1, y: 0, z: -2, yaw: 90 }],
    camera: { mode: 'orbit', distance: 6, height: 2 },
  };
  const scene = await request('POST', '/api/scenes', {
    form: fileForm({ name: '跨端验收场景（真实 GLB）', config: JSON.stringify(sceneConfig), ...SOURCE }, 'stage.glb', glbBytes, 'model/gltf-binary'),
  });
  must(scene.status === 201, '上传场景 GLB', `${scene.status} ${JSON.stringify(scene.body)}`);
  const sceneId = scene.body.id;

  // ---------- 边界 A：不可用模型（只有 GLB、没有 VRM 容器）----------
  // 形态等价于"管线只产出了 GLB"：契约 model-formats §1.1 要求这类模型
  // **可入库、可审核，但 usable=false，且不进入 catalog/export**（① 的硬性要求）。
  let unusable = null;
  try {
    const pmxZip = `${SAMPLES}/模型_初音未来Hatsune Miku_by_Boku_Wa_Luka.zip`;
    const entries = execFileSync('unzip', ['-Z1', pmxZip], { encoding: 'utf8' })
      .split('\n').map((line) => line.trim())
      .filter((line) => line.toLowerCase().endsWith('.pmx'));
    if (entries.length === 0) throw new Error('压缩包里没有 .pmx');
    const pmxPath = join('/tmp', 'opendance-seed-model.pmx');
    const glbPath = join('/tmp', 'opendance-seed-model.glb');
    execFileSync('unzip', ['-p', pmxZip, entries[0]], { stdio: ['ignore', openSync(pmxPath, 'w'), 'ignore'] });
    execFileSync(ASSIMP_BIN, ['export', pmxPath, glbPath], { stdio: 'ignore' });
    const glb = readFileSync(glbPath);
    must(glb.subarray(0, 4).toString('ascii') === 'glTF', `Assimp 转出 GLB（${glb.length} 字节）`);
    const created = await request('POST', '/api/models', {
      form: fileForm({ name: '不可用模型（仅 GLB，未产出 VRM）', ...SOURCE }, 'unusable.glb', glb, 'model/gltf-binary'),
    });
    must(created.status === 201, '上传仅 GLB 的模型', `${created.status} ${JSON.stringify(created.body)}`);
    const id = created.body.id;
    must(created.body.format === 'glb', `入库格式为 glb（实际 ${created.body.format}）`);
    must(created.body.usable === false, '该模型标记为不可用（usable=false）',
      JSON.stringify(created.body.unusableReason));
    const approve = await request('POST', `/api/reviews/model/${id}/approve`, {
      json: { reviewer: 'qa', comment: '通过但不设为默认' },
    });
    must(approve.status === 200 || approve.status === 201, '审核通过（不设为默认模型）', String(approve.status));
    const detail = await request('GET', `/api/models/${id}`);
    const reason = String(detail.body?.unusableReason ?? '');
    const drivable = detail.body?.stats?.drivable === true;
    must(reason.includes('未产出 VRM'), `不可用原因说明"未产出 VRM"：${reason}`);
    // 归因准确性（T-WEB-017）：骨架已达标时**不得**说"humanoid 不达标"
    if (drivable) {
      must(!reason.includes('humanoid 不达标'),
        `骨架达标（drivable=true，humanoid ${detail.body?.stats?.humanoidMapped}/${detail.body?.stats?.humanoidTotal}）`
        + `时不得归因于 humanoid：${reason}`);
    } else {
      console.log(`    · 该 GLB 的 drivable=false（humanoid ${detail.body?.stats?.humanoidMapped}/`
        + `${detail.body?.stats?.humanoidTotal}），原因归因于 humanoid 属正确`);
    }
    unusable = { id, reason, drivable };
    rmSync(pmxPath, { force: true });
    rmSync(glbPath, { force: true });
  } catch (error) {
    console.log(`    · 跳过不可用模型场景（${error.message}）—— 需要 unzip 与 ASSIMP_BIN`);
  }

  // ---------- 边界 B：场景 config 只给最少字段，服务端必须补齐默认 ----------
  const minimalConfig = { physics: { gravity: { y: -9.8 } } };
  const minimalScene = await request('POST', '/api/scenes', {
    form: fileForm(
      { name: '最简配置场景（只有 gravity）', config: JSON.stringify(minimalConfig), ...SOURCE },
      'minimal.glb', glbBytes, 'model/gltf-binary',
    ),
  });
  must(minimalScene.status === 201, '上传最简配置场景', `${minimalScene.status} ${JSON.stringify(minimalScene.body)}`);
  const minimalSceneId = minimalScene.body.id;

  // ---------- 审核发布 ----------
  for (const [kind, id] of [['song', songId], ['motion', motionId], ['model', modelId], ['scene', sceneId], ['scene', minimalSceneId]]) {
    // 契约：**上传即 pending**（draft 才需要显式 submit），所以 409「已处于 pending」是正常的
    const submit = await request('POST', `/api/reviews/${kind}/${id}/submit`, { json: { reviewer: 'qa' } });
    must([200, 201, 409].includes(submit.status), `提交审核 ${kind}#${id}`, String(submit.status));
    const approve = await request('POST', `/api/reviews/${kind}/${id}/approve`, {
      json: kind === 'model' ? { reviewer: 'qa', comment: '通过', setPrimary: true } : { reviewer: 'qa', comment: '通过' },
    });
    must(approve.status === 200 || approve.status === 201, `审核通过 ${kind}#${id}`, `${approve.status} ${JSON.stringify(approve.body)}`);
  }

  // ---------- 目录导出 ----------
  const health = await request('GET', '/health');
  must(health.status === 200, 'GET /health（取契约版本写进期望值）', String(health.status));

  const catalog = await request('GET', '/api/catalog/export');
  must(catalog.status === 200, 'GET /api/catalog/export', String(catalog.status));
  const data = catalog.body;
  console.log(`  目录：songs=${data.songs?.length} motions=${data.motions?.length} models=${data.models?.length} scenes=${data.scenes?.length}`);
  must(data.scenes?.length >= 1, '目录含场景（④ 的 scenes[]）');
  // 不可用模型不得进入客户端目录（①），且默认模型不受影响
  const modelsInCatalog = (catalog.body?.models ?? []);
  const nonVrm = modelsInCatalog.filter((m) => m.format !== 'vrm');
  must(nonVrm.length === 0, '目录里的模型全是 VRM（不可用模型不进目录）', JSON.stringify(nonVrm));
  if (unusable) {
    must(!modelsInCatalog.some((m) => m.id === unusable.id), `不可用模型 #${unusable.id} 不在目录里`);
    must(catalog.body?.defaultModelId === modelId,
      `defaultModelId 仍是可用的 VRM 模型（实际 ${catalog.body?.defaultModelId}，期望 ${modelId}）`);
  }

  // 最简配置场景：服务端必须补齐默认值（契约 0.5.0 的字段边界）
  const minimalEntry = (catalog.body?.scenes ?? []).find((s) => s.id === minimalSceneId);
  must(minimalEntry !== undefined, `最简配置场景 #${minimalSceneId} 在目录里`);
  const mc = minimalEntry?.config ?? {};
  must(mc.physics?.gravity?.y === -9.8, `重力保留（${JSON.stringify(mc.physics?.gravity)}）`);
  must(mc.physics?.colliders === 'auto', `碰撞体补默认 auto（实际 ${mc.physics?.colliders}）`);
  must(mc.physics?.ground?.friction === 0.6 && mc.physics?.ground?.slopeLimit === 45,
    `地面补默认 0.6/45°（实际 ${JSON.stringify(mc.physics?.ground)}）`);
  must(mc.physics?.wind?.gustAmplitude === 0 && mc.physics?.wind?.base?.x === 0,
    `风补默认（静风）：${JSON.stringify(mc.physics?.wind)}`);
  must(mc.camera?.mode === 'follow', `相机补默认 follow（实际 ${mc.camera?.mode}）`);
  must(mc.environment?.ambientIntensity === 1, `环境光补默认 1（实际 ${mc.environment?.ambientIntensity}）`);
  must(mc.spawnPoints === undefined || mc.spawnPoints.length <= 1,
    `出生点补默认（最多一条）：${JSON.stringify(mc.spawnPoints)}`);

  const version = await request('GET', '/api/catalog/version');
  console.log(`  目录指纹：${JSON.stringify(version.body)}`);

  mkdirSync(dirname(EXPECT_PATH), { recursive: true });
  writeFileSync(EXPECT_PATH, JSON.stringify({
    songId, motionId, modelId, sceneId,
    sceneConfig,
    motionFrames: pre.body?.frameCount ?? null,
    // 注意：**上传响应**里的 keypointFormat 还是 null（预处理后才写入），
    // 必须取**预处理响应**的值 —— 这里踩过一次，期望值写成了 null。
    keypointFormat: pre.body?.keypointFormat ?? null,
    catalogRevision: version.body?.revision ?? null,
    contractVersions: health.body?.contractVersion ?? {},
    unusableModelId: unusable?.id ?? null,
    unusableDrivable: unusable?.drivable ?? null,
    minimalSceneId,
    minimalSceneExpect: {
      gravityY: -9.8,
      colliders: 'auto',
      groundFriction: 0.6,
      groundSlopeLimit: 45,
      windCalm: true,
      cameraMode: 'follow',
      ambientIntensity: 1,
    },
  }, null, 2));
  console.log(`\n期望值已写入 ${EXPECT_PATH}`);
};

run().catch((e) => { console.error('ERR', e); process.exit(1); });