#!/usr/bin/env node
'use strict';

// 学校数据（JSON 种子 + 运行时）单元测试
// 用法：npm run test:schools

const fs = require('fs');
const os = require('os');
const path = require('path');

const results = [];
function expect(cond, msg) {
  if (!cond) throw new Error(msg);
}
async function check(name, fn) {
  try {
    await fn();
    results.push({ name, ok: true });
  } catch (e) {
    results.push({ name, ok: false, error: e.message || String(e) });
  }
}

async function main() {
  const tmp = fs.mkdtempSync(path.join(os.tmpdir(), 'schools-test-'));
  const seedFile = path.join(tmp, 'seed.json');
  const runtimeFile = path.join(tmp, 'runtime.json');

  fs.writeFileSync(seedFile, JSON.stringify({
    version: 1,
    schools: [
      {
        id: 'sch_seed_1', name: '内置大学', aliases: ['内置'], province: '浙江省', city: '杭州市',
        lng: 120.1, lat: 30.2, enabled: true, seed: true,
      },
      {
        id: 'sch_seed_2', name: '坐标越界大学', province: '境外',
        lng: 10, lat: 60, enabled: true, seed: false,
      },
    ],
  }));

  process.env.SCHOOLS_SEED_FILE = seedFile;
  process.env.SCHOOLS_FILE = runtimeFile;
  const { loadSchools } = require(path.join(__dirname, '..', 'schools-store.js'));

  await check('读取种子：2 条', () => {
    const list = loadSchools();
    expect(list.length === 2, `实际 ${list.length}`);
    expect(list.every((s) => s.seed === true), '种子项应标记 seed');
  });

  await check('越界坐标降级为 null（未定位）', () => {
    const s = loadSchools().find((x) => x.name === '坐标越界大学');
    expect(s.lng === null && s.lat === null, `lng=${s.lng} lat=${s.lat}`);
  });

  await check('运行时不存在时只用种子', () => {
    expect(!fs.existsSync(runtimeFile), '运行时文件不应存在');
    expect(loadSchools().length === 2, '条数不对');
  });

  fs.writeFileSync(runtimeFile, JSON.stringify({
    version: 1,
    schools: [
      { name: '内置大学', enabled: false, province: '浙江省' },
      { id: 'sch_new_1', name: '新学校', province: '江苏省', city: '南京市', lng: 118.8, lat: 32.06, enabled: true },
    ],
  }));

  await check('运行时覆盖同名种子的字段', () => {
    const s = loadSchools().find((x) => x.name === '内置大学');
    expect(s.enabled === false, 'enabled 未被覆盖');
    expect(s.lng === 120.1, '未覆盖的字段应保留种子值');
    expect(s.seed === true, '种子标记不能丢');
  });

  await check('运行时新增学校并参与排序', () => {
    const list = loadSchools();
    expect(list.length === 3, `实际 ${list.length}`);
    const names = list.map((s) => s.name).join('|');
    expect(names.includes('新学校'), names);
  });

  await check('运行时项 seed=false', () => {
    expect(loadSchools().find((s) => s.name === '新学校').seed === false, 'seed 应为 false');
  });

  fs.writeFileSync(runtimeFile, '{ broken json');
  await check('运行时文件损坏：退回种子且不抛错', () => {
    const list = loadSchools();
    expect(list.length === 2, `实际 ${list.length}`);
    expect(list.some((s) => s.name === '内置大学'), '种子缺失');
  });

  try { fs.rmSync(tmp, { recursive: true, force: true }); } catch { /* ignore */ }

  const failed = results.filter((r) => !r.ok);
  console.log('\n========== 学校数据测试结果 ==========');
  for (const r of results) console.log(`${r.ok ? '✓' : '✗'} ${r.name}${r.ok ? '' : '  ← ' + r.error}`);
  console.log(`\n通过 ${results.length - failed.length}/${results.length}`);
  if (failed.length) process.exit(1);
}

main().catch((e) => {
  console.error('测试脚本自身异常:', e);
  process.exit(1);
});