import { tap, expect } from '@git.zone/tstest/tapbundle';
import * as skr from '../ts/index.js';

let api: skr.SkrApi;

tap.test('should initialize SKR03 API', async () => {
  api = new skr.SkrApi({
    mongoDbUrl: 'mongodb://localhost:27017',
    dbName: 'test_skr03',
  });

  await api.initialize('SKR03');
  expect(api.getSKRType()).toEqual('SKR03');
});

tap.test('should have SKR03 accounts initialized', async () => {
  const accounts = await api.listAccounts();
  expect(accounts.length).toBeGreaterThan(50);

  // Check specific SKR03 accounts exist
  const kasse = await api.getAccount('1000');
  expect(kasse).not.toBeNull();
  expect(kasse.accountName).toEqual('Kasse');
  expect(kasse.accountType).toEqual('asset');

  const umsatz = await api.getAccount('4000');
  expect(umsatz).not.toBeNull();
  expect(umsatz.accountName).toEqual('Umsatzerlöse');
  expect(umsatz.accountType).toEqual('revenue');
});

tap.test('should verify SKR03 process structure principle', async () => {
  // SKR03 organizes accounts by business process
  // Class 4: Operating Income
  // Class 5: Material Costs
  // Class 6: Personnel Costs
  // Class 7: Other Operating Expenses

  const class4 = await api.getAccountsByClass(4);
  expect(class4.length).toBeGreaterThan(0);
  expect(class4[0].accountType).toEqual('revenue');

  const class5 = await api.getAccountsByClass(5);
  expect(class5.length).toBeGreaterThan(0);
  expect(class5[0].accountType).toEqual('expense');

  const class6 = await api.getAccountsByClass(6);
  expect(class6.length).toBeGreaterThan(0);
  expect(class6[0].accountType).toEqual('expense');
});

tap.test('should create custom SKR03 account', async () => {
  const customAccount = await api.createAccount({
    accountNumber: '4999',
    accountName: 'Custom Revenue Account',
    accountClass: 4,
    accountType: 'revenue',
    description: 'Test custom account',
  });

  expect(customAccount.accountNumber).toEqual('4999');
  expect(customAccount.skrType).toEqual('SKR03');
  expect(customAccount.isActive).toBeTrue();
});

tap.test('should post transaction in SKR03', async () => {
  const transaction = await api.postTransaction({
    date: new Date(),
    debitAccount: '1200', // Bank
    creditAccount: '4000', // Revenue
    amount: 1000,
    description: 'Test sale',
    reference: 'INV-001',
    skrType: 'SKR03',
  });

  expect(transaction.status).toEqual('posted');
  expect(transaction.amount).toEqual(1000);
  expect(transaction.skrType).toEqual('SKR03');
});

tap.test('should post journal entry in SKR03', async () => {
  const journalEntry = await api.postJournalEntry({
    date: new Date(),
    description: 'Test journal entry',
    reference: 'JE-001',
    lines: [
      { accountNumber: '1000', debit: 500 }, // Cash
      { accountNumber: '1200', debit: 500 }, // Bank
      { accountNumber: '4000', credit: 1000 }, // Revenue
    ],
    skrType: 'SKR03',
  });

  expect(journalEntry.status).toEqual('posted');
  expect(journalEntry.isBalanced).toBeTrue();
  expect(journalEntry.totalDebits).toEqual(1000);
  expect(journalEntry.totalCredits).toEqual(1000);
});

tap.test('should generate trial balance for SKR03', async () => {
  const trialBalance = await api.generateTrialBalance();

  expect(trialBalance.skrType).toEqual('SKR03');
  expect(trialBalance.entries.length).toBeGreaterThan(0);
  expect(trialBalance.isBalanced).toBeTrue();
  expect(trialBalance.totalDebits).toEqual(trialBalance.totalCredits);
});

tap.test('should generate income statement for SKR03', async () => {
  const incomeStatement = await api.generateIncomeStatement();

  expect(incomeStatement.skrType).toEqual('SKR03');
  expect(incomeStatement.revenue.length).toBeGreaterThanOrEqual(0);
  expect(incomeStatement.expenses.length).toBeGreaterThanOrEqual(0);
  expect(incomeStatement.netIncome).toEqual(
    incomeStatement.totalRevenue - incomeStatement.totalExpenses,
  );
});

tap.test('should generate balance sheet for SKR03', async () => {
  const balanceSheet = await api.generateBalanceSheet();

  expect(balanceSheet.skrType).toEqual('SKR03');
  expect(balanceSheet.assets.totalAssets).toBeGreaterThanOrEqual(0);
  expect(balanceSheet.isBalanced).toBeTrue();
});

tap.test('should search accounts in SKR03', async () => {
  const results = await api.searchAccounts('Bank');

  expect(results.length).toBeGreaterThan(0);
  const bankAccount = results.find((a) => a.accountNumber === '1200');
  expect(bankAccount).not.toBeNull();
});

tap.test('should export SKR03 accounts to CSV', async () => {
  const csv = await api.exportAccountsToCSV();

  expect(csv).toInclude('"Account";"Name";"Description";"Type";"Active"');
  expect(csv).toInclude('1000');
  expect(csv).toInclude('Kasse');
});

tap.test('should close API connection', async () => {
  await api.close();

  // Verify API requires reinitialization
  let errorThrown = false;
  try {
    await api.listAccounts();
  } catch (error) {
    errorThrown = true;
    expect(error.message).toInclude('not initialized');
  }
  expect(errorThrown).toBeTrue();
});

export default tap.start();