import assert from 'node:assert/strict';
import { mkdtempSync, rmSync } from 'node:fs';
import { tmpdir } from 'node:os';
import { join } from 'node:path';
import LibDashStore from '../src/index.js';
import { BetterSqlite3Provider } from '../src/providers/sqlite3/index.js';

async function run() {
  console.log('--- Testing category recursive deletion ---');

  const tempDir = mkdtempSync(join(tmpdir(), 'test-cat-del-rec-'));
  const dbFile = join(tempDir, 'test.db');
  const storageDir = join(tempDir, 'storage');

  const provider = new BetterSqlite3Provider({
    filename: dbFile,
    storageDir,
  });

  await provider.initialize();
  const store = await new LibDashStore(provider);

  try {
    const googleAuthId = await store.google_auth.add('tester@example.com');
    const company = await store.company.create({
      name: 'Recursive Test Corp',
      iso639: 'de',
      taxrate: 19,
      reducedtaxrate: 7,
      googleAuthId,
    });
    await store.google_auth.setSelectedCompany(googleAuthId, company.id);

    const rootId = company.rootCategoryId;

    // 1. Refuse to delete root category, even with recursive: true
    console.log('1. Testing refusal to delete root category...');
    await assert.rejects(
      () => store.category.delete({ googleAuthId, id: rootId, recursive: true }),
      /Cannot delete root category/
    );

    // 2. Build category tree:
    // Root
    // ├── OutsideCat (for preserved articles)
    // └── MainCat (to be recursively deleted)
    //     ├── SubCat1
    //     │   └── SubSubCat1
    //     └── SubCat2
    console.log('2. Building category tree...');
    const outsideCat = await store.category.createUnderParent({
      googleAuthId,
      parentId: rootId,
      name: 'Outside Category',
    });
    const mainCat = await store.category.createUnderParent({
      googleAuthId,
      parentId: rootId,
      name: 'Main Category',
    });
    const subCat1 = await store.category.createUnderParent({
      googleAuthId,
      parentId: mainCat.id,
      name: 'Sub Category 1',
    });
    const subSubCat1 = await store.category.createUnderParent({
      googleAuthId,
      parentId: subCat1.id,
      name: 'Sub Sub Category 1',
    });
    const subCat2 = await store.category.createUnderParent({
      googleAuthId,
      parentId: mainCat.id,
      name: 'Sub Category 2',
    });

    // 3. Test non-recursive delete guards
    console.log('3. Testing non-recursive delete guards...');
    await assert.rejects(
      () => store.category.delete({ googleAuthId, id: mainCat.id, recursive: false }),
      /Category has subcategories/
    );

    // 4. Create articles:
    // Article 1: Only in SubSubCat1 -> Should be deleted
    // Article 2: In SubCat1 AND OutsideCat -> Should survive, removed from SubCat1
    // Article 3: Parent in SubCat2 with a variant child -> Both should be deleted
    // Article 4: Outside article in OutsideCat -> Untouched
    console.log('4. Creating articles in categories...');
    const artOnlySub = await store.article.createUnderParent({
      googleAuthId,
      parentId: subSubCat1.id,
      name: 'Only SubSubCat Article',
    });

    const artMulti = await store.article.createUnderParent({
      googleAuthId,
      parentId: subCat1.id,
      name: 'Multi Category Article',
    });
    // Add outsideCat to artMulti
    await store.article.setCategoryIdsBySku(googleAuthId, artMulti.sku, [subCat1.id, outsideCat.id]);

    const attrName = await store.attributename.create(googleAuthId, { name: 'Size' });
    const artParent = await store.article.createUnderParent({
      googleAuthId,
      parentId: subCat2.id,
      name: 'Parent Article In Sub2',
    });
    await store.article.toggleParent(googleAuthId, artParent.sku, {
      isParent: true,
      attributeNameId: attrName.id,
    });
    const artChild = await store.article.addChild(googleAuthId, artParent.sku, {
      value: 'M',
    });

    const artOutside = await store.article.createUnderParent({
      googleAuthId,
      parentId: outsideCat.id,
      name: 'Purely Outside Article',
    });

    // 5. Test POS terminal assignment unlinking on recursive delete
    console.log('5. Setting up POS terminal assignment...');
    const posTerminal = await store.posterminal.upsert(googleAuthId, {
      name: 'POS Register 1',
      pairingpin: '1234',
    });
    await store.posterminal.setOn(googleAuthId, posTerminal.id, subCat2.id);
    await store.posterminal.setOn(googleAuthId, posTerminal.id, outsideCat.id);

    const posCatsBefore = provider.db.prepare(
      'SELECT category_id FROM posterminalcategory WHERE posterminal_id = ?'
    ).all(posTerminal.id).map(r => r.category_id);
    assert.ok(posCatsBefore.includes(subCat2.id));
    assert.ok(posCatsBefore.includes(outsideCat.id));

    // 6. Execute recursive deletion of mainCat
    console.log('6. Executing recursive category delete on mainCat...');
    await store.category.delete({
      googleAuthId,
      id: mainCat.id,
      recursive: true,
    });

    // 7. Verify category tree state
    console.log('7. Verifying category tree...');
    const catsRemaining = provider.db.prepare('SELECT id FROM category').all().map(r => r.id);
    assert.ok(catsRemaining.includes(rootId));
    assert.ok(catsRemaining.includes(outsideCat.id));
    assert.ok(!catsRemaining.includes(mainCat.id));
    assert.ok(!catsRemaining.includes(subCat1.id));
    assert.ok(!catsRemaining.includes(subSubCat1.id));
    assert.ok(!catsRemaining.includes(subCat2.id));

    // 8. Verify POS terminal assignment was unlinked for deleted category
    console.log('8. Verifying POS terminal categories...');
    const posCatsAfter = provider.db.prepare(
      'SELECT category_id FROM posterminalcategory WHERE posterminal_id = ?'
    ).all(posTerminal.id).map(r => r.category_id);
    assert.ok(!posCatsAfter.includes(subCat2.id));
    assert.ok(posCatsAfter.includes(outsideCat.id));

    // 9. Verify article states:
    console.log('9. Verifying article states...');
    // artOnlySub: deleted
    await assert.rejects(
      () => store.article.getBySku(googleAuthId, artOnlySub.sku),
      /Article not found/
    );
    // tombstone for artOnlySub exists
    const t1 = provider.db.prepare('SELECT * FROM articletombstone WHERE sku = ?').all(artOnlySub.sku);
    assert.equal(t1.length, 1);

    // artParent and its child artChild: both deleted
    await assert.rejects(
      () => store.article.getBySku(googleAuthId, artParent.sku),
      /Article not found/
    );
    await assert.rejects(
      () => store.article.getBySku(googleAuthId, artChild.article.sku),
      /Article not found/
    );
    const tParent = provider.db.prepare('SELECT * FROM articletombstone WHERE sku = ?').all(artParent.sku);
    const tChild = provider.db.prepare('SELECT * FROM articletombstone WHERE sku = ?').all(artChild.article.sku);
    assert.equal(tParent.length, 1);
    assert.equal(tChild.length, 1);

    // artMulti: continues to exist!
    const artMultiDetail = await store.article.getBySku(googleAuthId, artMulti.sku);
    assert.equal(artMultiDetail.article.sku, artMulti.sku);
    // artMulti categoryarticle now ONLY contains outsideCat
    const artMultiCats = provider.db.prepare(
      'SELECT category_id FROM categoryarticle WHERE article_id = ?'
    ).all(artMultiDetail.article.id).map(r => r.category_id);
    assert.deepEqual(artMultiCats, [outsideCat.id]);

    // artOutside: completely untouched
    const artOutsideDetail = await store.article.getBySku(googleAuthId, artOutside.sku);
    assert.equal(artOutsideDetail.article.sku, artOutside.sku);

    console.log('✅ ALL RECURSIVE CATEGORY DELETE TESTS PASSED');
  } finally {
    try {
      rmSync(tempDir, { recursive: true, force: true });
    } catch {}
  }
}

run().catch((err) => {
  console.error('Test failed:', err);
  process.exit(1);
});