'use strict';

/**
 * Integration tests – Invoice controller (controllers/invoice.js)
 *
 * We focus on the read path (getInvoices_get) which does not require the full
 * complex invoice-creation pipeline (jobs, clients, Stripe, etc.).
 * A seeded Invoice document is created directly via the model for query tests.
 */

const { connectDB, disconnectDB, clearCollection } = require('./jest.setup');
const { mockApplicator, mockClient, mockReq, mockRes, newId } = require('./mock_data');

let Invoice, Customer, Client;

beforeAll(async () => {
  await connectDB();
  Invoice  = require('../../model/invoice');
  Customer = require('../../model/customer');
  Client   = require('../../model/client');
});

afterAll(async () => {
  await disconnectDB();
});

const invoiceCtl = require('../../controllers/invoice');

describe('Invoice controller – data methods', () => {
  let applicator, client;

  function makeInvoiceDoc(puid, clientId) {
    return {
      code: `INV-${Date.now()}`,
      companyName: 'Test Applicator Co.',
      address: '123 Main St',
      currency: 'USD',
      dueDate: new Date(Date.now() + 30 * 24 * 60 * 60 * 1000),
      openDate: new Date(),
      status: 'open',
      paymentTerm: 30,
      byPuid: puid,
      clients: [
        {
          billTo: clientId,
          code: `INV-${Date.now()}-1`,
          split: '100',
          subTotal: '100.00',
        },
      ],
      jobs: [],
    };
  }

  beforeAll(async () => {
    await clearCollection(Invoice);
    applicator = await Customer.create(mockApplicator());
    client     = await Client.create(mockClient(applicator._id));
  });

  afterAll(async () => {
    await clearCollection(Invoice);
    await Client.deleteMany({ _id: client._id });
    await Customer.deleteMany({ _id: applicator._id });
  });

  const makeReq = (extra = {}) =>
    mockReq({
      uid: applicator._id,
      puid: applicator._id,
      ut: '1',
      userInfo: {
        puid: applicator._id,
        kind: '1',
        premium: 0,
        membership: null,
        markedDelete: false,
      },
      ...extra,
    });

  // -------------------------------------------------------------------------
  describe('getInvoices_get', () => {
    beforeAll(async () => {
      await Invoice.create(makeInvoiceDoc(applicator._id, client._id));
    });

    it('returns invoices for the applicator', async () => {
      const req = makeReq({ query: {} });
      const res = mockRes();

      await invoiceCtl.getInvoices_get(req, res);

      expect(res.json).toHaveBeenCalled();
      expect(Array.isArray(res._data)).toBe(true);
      expect(res._data.length).toBeGreaterThan(0);
    });

    it('returns empty array when no invoices match filter', async () => {
      const filters = JSON.stringify({ code: { value: 'NONEXISTENT_CODE_12345', valueOperator: 'contains' } });
      const req = makeReq({ query: { filters } });
      const res = mockRes();

      await invoiceCtl.getInvoices_get(req, res);

      expect(res.json).toHaveBeenCalled();
      expect(res._data.length).toBe(0);
    });

    it('throws AppParamError when applicator puid is invalid', async () => {
      const req = mockReq({
        uid: newId(),
        puid: 'invalid-puid',
        ut: '1',
        userInfo: {
          puid: 'invalid-puid',
          kind: '1',
          premium: 0,
          membership: null,
          markedDelete: false,
        },
      });
      const res = mockRes();

      await expect(invoiceCtl.getInvoices_get(req, res)).rejects.toThrow();
    });
  });

  // -------------------------------------------------------------------------
  describe('getInvoiceById_get', () => {
    let invoiceId, InvoiceSetting;

    beforeAll(async () => {
      InvoiceSetting = require('../../model/invoice_settings');
      // Seed a default invoice issuer setting (required by getInvoiceById_get)
      await InvoiceSetting.findOneAndUpdate(
        { userId: null, byPuid: applicator._id },
        { $setOnInsert: { userId: null, byPuid: applicator._id, companyName: 'Test Co.', paymentTerm: 30 } },
        { upsert: true, new: true }
      );
      const doc = await Invoice.create(makeInvoiceDoc(applicator._id, client._id));
      invoiceId = String(doc._id);
    });

    it('returns invoice detail with issuer info', async () => {
      const req = makeReq({ params: { id: invoiceId } });
      const res = mockRes();

      await invoiceCtl.getInvoiceById_get(req, res);

      expect(res.json).toHaveBeenCalled();
      expect(res._data).toBeTruthy();
    });

    it('throws when invoice is not found', async () => {
      const req = makeReq({ params: { id: String(newId()) } });
      const res = mockRes();
      await expect(invoiceCtl.getInvoiceById_get(req, res)).rejects.toThrow();
    });
  });

  // -------------------------------------------------------------------------
  describe('getPrintInformation_get', () => {
    let invoiceId, InvoiceSetting;

    beforeAll(async () => {
      InvoiceSetting = require('../../model/invoice_settings');
      await InvoiceSetting.findOneAndUpdate(
        { userId: null, byPuid: applicator._id },
        { $setOnInsert: { userId: null, byPuid: applicator._id, companyName: 'Test Co.', paymentTerm: 30 } },
        { upsert: true, new: true }
      );
      const doc = await Invoice.create(makeInvoiceDoc(applicator._id, client._id));
      invoiceId = String(doc._id);
    });

    it('throws when invoiceId is missing', async () => {
      const req = makeReq({
        query: { clientId: String(client._id) },
      });
      const res = mockRes();
      await expect(invoiceCtl.getPrintInformation_get(req, res)).rejects.toThrow();
    });

    it('throws when invoice is not found for the given client', async () => {
      const req = makeReq({
        query: { invoiceId: String(newId()), clientId: String(client._id) },
      });
      const res = mockRes();
      await expect(invoiceCtl.getPrintInformation_get(req, res)).rejects.toThrow();
    });

    it('returns print information for a valid invoice and client', async () => {
      const req = makeReq({
        query: { invoiceId, clientId: String(client._id) },
      });
      const res = mockRes();

      await invoiceCtl.getPrintInformation_get(req, res);

      expect(res.json).toHaveBeenCalled();
      expect(res._data).toBeTruthy();
    });
  });

  // -------------------------------------------------------------------------
  describe('exportInvoices_get', () => {
    it('throws when exportType is missing', async () => {
      const req = makeReq({ query: { invoiceIds: [String(newId())] } });
      const res = mockRes();
      await expect(invoiceCtl.exportInvoices_get(req, res)).rejects.toThrow();
    });

    it('throws when invoiceIds is empty', async () => {
      const req = makeReq({ query: { exportType: 'csv', invoiceIds: [] } });
      const res = mockRes();
      await expect(invoiceCtl.exportInvoices_get(req, res)).rejects.toThrow();
    });
  });
});