import { test } from 'node:test';
import assert from 'node:assert/strict';
import { readFileSync } from 'node:fs';
import vm from 'node:vm';

const source = readFileSync(new URL('../deploy-admin-functions.mjs', import.meta.url), 'utf8');
const functions = source.slice(source.indexOf('function importCell('), source.indexOf('async function commitVocabularyImport('));
function importer(nodes = [{ nodeId: 42, nodeName: '第一单元', bookName: '真实教材', stageName: '小学' }], existing = null) {
  const queries = [];
  class Batch { constructor() { this.id = 'batch'; this.createdAt = new Date(); } set() {} async save() {} }
  const context = vm.createContext({
    Parse: { Object: Batch }, Psql: { query: async () => nodes, oneOrNone: async (sql, args) => { queries.push({ sql, args }); return existing; } },
    text: value => String(value ?? '').trim(), number: value => Number(value) || 0,
    requireRole() {}, reasonOf: () => 'test', companyIdOf: () => 'tenant', companyPointer: () => ({}),
    fail: (_status, message) => { throw new Error(message); }, randomObjectId: () => 'random', audit: async () => {},
    dateIso: value => value.toISOString(), legacyVocabularyMedia: value => String(value ?? '').replace('https://a018.2018.z01.com/UploadFiles/', ''),
  });
  vm.runInContext(functions, context);
  return { queries, run: async (rows, targetNodeId) => JSON.parse(JSON.stringify(await context.previewVocabularyImport({ current: { id: 'operator' } }, {}, { rows, ...(targetNodeId === undefined ? {} : { targetNodeId }) }))) };
}

test('old template headers preserve GeneralID and exported audio URLs', async () => {
  const { run, queries } = importer(undefined, { objectId: 'word', title: 'time', nodeId: 42, sy: '时间', yp: 'time.mp3' });
  const result = await run([{ ' GeneralID（可选） ': '123', 单元ID: '42', 单词: 'time', 释义: '时间', 音频URL: 'https://a018.2018.z01.com/UploadFiles/time.mp3' }]);
  assert.equal(result.summary.unchanged, 1);
  assert.equal(queries[0].args[1], '123');
  assert.match(queries[0].sql, /generalId/);
});
test('old sample paths fail with actionable guidance, explicit chosen target resolves them', async () => {
  const { run } = importer(), rows = [{ 学段: '小学', 教材: '示例教材', 单元: '第一单元', 单词: 'time' }];
  const invalid = await run(rows);
  assert.equal(invalid.summary.error, 1); assert.match(invalid.items[0].errors[0], /示例教材.*单元ID.*页面选择/);
  const valid = await run(rows, 42);
  assert.equal(valid.summary.create, 1); assert.equal(valid.items[0].nodeId, 42); assert.equal(valid.summary.missingMedia, 1);
});
test('explicit invalid, recycled or cross-tenant IDs never fall back to matching names', async () => {
  const { run } = importer();
  const result = await run([{ 单元ID: '999', 学段: '小学', 教材: '真实教材', 单元: '第一单元', 单词: 'time' }]);
  assert.equal(result.summary.error, 1); assert.match(result.items[0].errors[0], /单元ID不存在/);
  await assert.rejects(run([{ 单词: 'time' }], 999), /有效的目标/);
});
test('duplicate names require ID rather than choosing the last matching directory', async () => {
  const { run } = importer([42, 43].map(nodeId => ({ nodeId, nodeName: '第一单元', bookName: '真实教材', stageName: '小学' })));
  assert.match((await run([{ 学段: '小学', 教材: '真实教材', 单元: '第一单元', 单词: 'time' }])).items[0].errors[0], /不唯一/);
});
test('duplicate rows identify the original Excel row; different units remain separate', async () => {
  const { run } = importer([42, 43].map(nodeId => ({ nodeId })));
  const result = await run([{ 单元ID: 42, 单词: 'time' }, { 单元ID: 42, 单词: 'TIME' }, { 单元ID: 43, 单词: 'time' }]);
  assert.equal(result.summary.duplicate, 1); assert.equal(result.summary.create, 2);
  assert.match(result.items[1].errors[0], /第 2 行/);
});
test('unknown GeneralID blocks import rather than creating an unexpected word', async () => {
  const result = await importer().run([{ 'GeneralID（可选）': 999, 单元ID: 42, 单词: 'time' }]);
  assert.equal(result.summary.error, 1); assert.match(result.items[0].errors[0], /GeneralID.*不存在/);
});