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 order shipping ledger & stock adjustment ---');

  const tempDir = mkdtempSync(join(tmpdir(), 'test-order-shipping-'));
  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 {
    // 1. Setup company and user
    const googleAuthId = await store.google_auth.add('shipping-test@example.com');
    const company = await store.company.create({
      name: 'Shipping Test Corp',
      iso639: 'de',
      taxrate: 19,
      reducedtaxrate: 7,
      googleAuthId,
    });
    await store.google_auth.setSelectedCompany(googleAuthId, company.id);

    // Setup warehouse
    const warehouse = await store.warehouse.create(googleAuthId, {
      name: 'Hauptlager',
    });
    assert(warehouse.id, 'Warehouse should have id');

    // Setup units
    await store.unit.upsert(googleAuthId, {
      si: 'stk',
      basesi: 'stk',
      basesifactor: 1,
      symbol: 'Stk',
      name: 'Stück',
    });

    // Setup customer group & customer entity
    const groups = await store.customergroup.list(googleAuthId);
    const customer = await store.entity.create(googleAuthId, {
      customergroupId: groups[0].id,
      name: 'Max Mustermann',
    });

    // 2. Setup tracked article and untracked article
    const trackedArt = await store.article.createUnderParent({
      googleAuthId,
      parentId: company.rootCategoryId,
      name: 'Tracked Article',
      track_stock: 1,
    });
    const untrackedArt = await store.article.createUnderParent({
      googleAuthId,
      parentId: company.rootCategoryId,
      name: 'Untracked Service Item',
      track_stock: 0,
    });

    // Initial stock for tracked article: +10
    await store.stock.adjust(googleAuthId, {
      sku: trackedArt.sku,
      warehouseId: warehouse.id,
      amount: 10,
      text: 'Initial stock intake',
    });

    const artBefore = await store.article.getBySku(googleAuthId, trackedArt.sku);
    const stockBefore = artBefore.article.warehouses.reduce((sum, w) => sum + w.stock, 0);
    assert.equal(stockBefore, 10, 'Initial stock should be 10');

    // 3. Create sales order with tracked and untracked items
    const order = await store.order.create(googleAuthId, {
      number: 'O-2026-001',
      date: new Date().toISOString(),
      entityId: customer.id,
      lines: [
        {
          sku: trackedArt.sku,
          name: 'Tracked Article',
          pu: 1,
          amount: 3,
          net: 50,
          taxrate: 19,
        },
        {
          sku: untrackedArt.sku,
          name: 'Untracked Service Item',
          pu: 1,
          amount: 2,
          net: 20,
          taxrate: 19,
        },
      ],
    });
    assert.equal(order.lines.length, 2);

    // 4. Create shipping with state 'open' (not shipped yet)
    console.log('4. Creating shipping with state "open"...');
    const shippingOpen = await store.shipping.create(googleAuthId, {
      manifestId: order.id,
      type: 'parcel',
      state: 'open',
    });
    assert.equal(shippingOpen.state, 'open');

    // Assert stock is still 10
    const artStill10 = await store.article.getBySku(googleAuthId, trackedArt.sku);
    assert.equal(artStill10.article.warehouses.reduce((sum, w) => sum + w.stock, 0), 10, 'Stock should still be 10 when shipping is open');

    // 5. Update shipping to state 'shipped'
    console.log('5. Updating shipping to state "shipped"...');
    const shippingShipped = await store.shipping.update(googleAuthId, shippingOpen.id, {
      state: 'shipped',
      warehouseId: warehouse.id,
    });
    assert.equal(shippingShipped.state, 'shipped');

    // Assert stock is now 7 (10 - 3)
    const artAfter = await store.article.getBySku(googleAuthId, trackedArt.sku);
    assert.equal(artAfter.article.warehouses.reduce((sum, w) => sum + w.stock, 0), 7, 'Stock should be reduced to 7');

    // Assert ledger entries
    const ledgerRows = await store.ledger.listBySku(googleAuthId, trackedArt.sku);
    assert.equal(ledgerRows.length, 2, 'Should have 2 ledger entries for tracked article (adjust + shipping)');
    const shippingLedger = ledgerRows.find((l) => l.transaction_type === 'SHIPPING');
    assert(shippingLedger, 'Shipping ledger entry should exist');
    assert.equal(shippingLedger.amount, -3, 'Shipping ledger entry should be -3');

    // Assert untracked article has 0 warehouse ledger entries
    const untrackedLedger = await store.ledger.listBySku(googleAuthId, untrackedArt.sku);
    assert.equal(untrackedLedger.length, 0, 'Untracked article should not have warehouse ledger entries');

    // Assert article history: order goes into history, shipment does NOT
    const history = await store.article.getHistoryBySku(googleAuthId, trackedArt.sku);
    console.log('Tracked article history:', history.map((h) => h.text));
    const orderHistory = history.find((h) => h.text === 'Auftrag O-2026-001 (Kunde: "Max Mustermann", Menge: 3, € 59,50)');
    assert(orderHistory, 'Article history should contain order creation entry with formatted gross price');
    assert(orderHistory.meta, 'Article history entry should have meta');
    const parsedMeta = JSON.parse(orderHistory.meta);
    assert.equal(parsedMeta.type, 'order');
    assert.equal(parsedMeta.orderId, order.id);
    assert.equal(parsedMeta.gross, 59.5);
    const shippingHistory = history.find((h) => h.text.includes('Versand Auftrag'));
    assert(!shippingHistory, 'Article history should NOT report the shipment');

    // Untracked article also has the order in history, but not the shipment
    const untrackedHistory = await store.article.getHistoryBySku(googleAuthId, untrackedArt.sku);
    console.log('Untracked article history:', untrackedHistory.map((h) => h.text));
    assert(
      untrackedHistory.some((h) => h.text === 'Auftrag O-2026-001 (Kunde: "Max Mustermann", Menge: 2, € 23,80)'),
      'Untracked article history should contain order creation entry with formatted gross price',
    );
    assert(
      !untrackedHistory.some((h) => h.text.includes('Versand Auftrag')),
      'Untracked article history should NOT report the shipment',
    );

    // Test order import with historical date preserves date in article history
    const historicalDate = '2023-04-15T10:30:00.000Z';
    await store.order.create(googleAuthId, {
      number: 'O-HIST-001',
      date: historicalDate,
      createdAt: historicalDate,
      lines: [{ sku: trackedArt.sku, amount: 1, net: 10, taxrate: 19 }],
    });
    const histWithOld = await store.article.getHistoryBySku(googleAuthId, trackedArt.sku);
    const oldEntry = histWithOld.find((h) => h.text.startsWith('Auftrag O-HIST-001'));
    assert(oldEntry, 'Historical order entry should exist in article history');
    assert.equal(new Date(oldEntry.date).toISOString(), historicalDate, 'History entry should preserve historical order date');
    const oldMeta = JSON.parse(oldEntry.meta);
    assert.equal(oldMeta.orderNumber, 'O-HIST-001');

    // 6. Test immutability: once shipped, cannot be deleted
    console.log('6. Testing cannot delete shipped shipping...');
    await assert.rejects(
      async () => {
        await store.shipping.delete(googleAuthId, shippingShipped.id);
      },
      { message: 'Shipped shipping cannot be deleted' },
    );

    // 7. Test immutability: once shipped, cannot be undone
    console.log('7. Testing cannot undo shipped shipping...');
    await assert.rejects(
      async () => {
        await store.shipping.update(googleAuthId, shippingShipped.id, { state: 'open' });
      },
      { message: 'Shipped shipping cannot be undone' },
    );

    // 8. Test order cannot be shipped again
    console.log('8. Testing order cannot be shipped twice...');
    await assert.rejects(
      async () => {
        await store.shipping.create(googleAuthId, {
          manifestId: order.id,
          type: 'express',
          state: 'shipped',
        });
      },
      { message: 'Order already shipped' },
    );

    // 9. Test direct creation with state 'shipped'
    console.log('9. Testing direct creation with state "shipped"...');
    const order2 = await store.order.create(googleAuthId, {
      number: 'O-2026-002',
      date: new Date().toISOString(),
      entityId: customer.id,
      lines: [
        {
          sku: trackedArt.sku,
          name: 'Tracked Article',
          pu: 1,
          amount: 2,
          net: 50,
          taxrate: 19,
        },
      ],
    });

    const directShipped = await store.shipping.create(googleAuthId, {
      manifestId: order2.id,
      type: 'parcel',
      state: 'shipped',
    });
    assert.equal(directShipped.state, 'shipped');

    const artFinal = await store.article.getBySku(googleAuthId, trackedArt.sku);
    assert.equal(artFinal.article.warehouses.reduce((sum, w) => sum + w.stock, 0), 5, 'Stock should now be 5 (7 - 2)');

    console.log('✓ All order shipping ledger tests passed successfully!');
  } finally {
    try {
      rmSync(tempDir, { recursive: true, force: true });
    } catch {}
  }
}

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