import { randomUUID } from 'node:crypto';
import argon2 from 'argon2';
import ExcelJS from 'exceljs';
import { afterEach, describe, expect, it } from 'vitest';
import { CONSENT_QUESTIONS } from '../../frontend/src/consentQuestions.js';
import { createServer } from '../src/app.js';
import { db } from '../src/db/knex.js';
import { CONSENT_STATEMENTS } from '../src/schemas/consent.js';
import { encryptField } from '../src/services/fieldCrypto.js';
import { seedSurveyDefinition } from '../src/survey/seed.js';
import { truncateTables } from './truncate.js';

const email = 'applications-export-admin@example.com';
const password = 'correct-password';

/**
 * @param {import('@hapi/hapi').ServerInjectResponse} response
 */
function sessionCookie(response) {
  const raw = response.headers['set-cookie'];
  const header = Array.isArray(raw) ? raw[0] : raw;
  return header.split(';')[0];
}

describe('consent statements', () => {
  it('match the statements shown on the consent page', () => {
    expect(CONSENT_STATEMENTS).toEqual(
      CONSENT_QUESTIONS.map(({ id, label }) => ({ id, label })),
    );
  });
});

describe('applications export', () => {
  /** @type {import('@hapi/hapi').Server | undefined} */
  let server;

  afterEach(async () => {
    await server?.stop();
    await truncateTables();
  });

  it('writes application, consent and survey columns for the created-date range', async () => {
    server = await createServer();
    await db('admin_users').insert({
      name: 'Administrator',
      email,
      password_hash: await argon2.hash(password, { type: argon2.argon2id }),
      is_active: true,
    });
    const login = await server.inject({
      method: 'POST',
      url: '/api/admin/auth/login',
      payload: { email, password },
    });

    const [userId] = await db('users').insert({ email: 'asha@example.com', name: 'Asha Rao' });
    const [applicationId] = await db('applications').insert({
      public_id: randomUUID(),
      user_id: userId,
      email: 'asha@example.com',
      status: 'APPROVED',
      full_name: 'Asha Rao',
      registration_no: 'MMC-100',
      pan: encryptField('ABCDE1234F'),
      account_number: encryptField('001234567890'),
      ifsc: 'HDFC0001234',
      cancelled_cheque_key: 'cheques/1.png',
      final_pdf_key: 'final/1.pdf',
      version: 1,
      created_at: '2026-10-10 09:00:00',
    });
    await db('applications').insert({
      public_id: randomUUID(),
      email: 'outside@example.com',
      status: 'DRAFT',
      version: 1,
      created_at: '2026-09-01 09:00:00',
    });
    await db('signatures').insert({
      application_id: applicationId,
      version: 1,
      type: 'TYPED',
      typed_text: 'Asha Rao',
      signed_at: new Date(),
    });
    await db('consents').insert({
      user_id: userId,
      application_id: applicationId,
      participant_name: 'Asha Rao',
      consent_date: '2026-10-10',
      answers: JSON.stringify(
        Object.fromEntries(CONSENT_STATEMENTS.map((statement) => [statement.id, true])),
      ),
      submitted_at: '2026-10-10 09:05:00',
    });
    const definitionId = await seedSurveyDefinition();
    await db('survey_responses').insert({
      application_id: applicationId,
      survey_definition_id: definitionId,
      answers: JSON.stringify({}),
      status: 'IN_PROGRESS',
      started_at: new Date(),
    });

    const response = await server.inject({
      method: 'GET',
      url: '/api/admin/applications/export?from=2026-10-01&to=2026-10-31',
      headers: { cookie: sessionCookie(login) },
    });

    expect(response.statusCode).toBe(200);
    expect(response.headers['content-disposition']).toContain('applications-consent.xlsx');
    const workbook = new ExcelJS.Workbook();
    await workbook.xlsx.load(response.rawPayload);
    const sheet = workbook.getWorksheet('Applications');
    const headers = sheet.getRow(1).values;
    const cell = (/** @type {string} */ header) => sheet.getRow(2).getCell(headers.indexOf(header)).value;

    expect(sheet.rowCount).toBe(2);
    expect(sheet.getRow(1).getCell(1).font?.bold).toBe(true);
    expect(cell('Status')).toBe('Approved');
    expect(cell('PAN')).toBe('ABCDE1234F');
    expect(cell('Account number')).toBe('001234567890');
    expect(cell('Cheque uploaded')).toBe('Yes');
    expect(cell('Signed')).toBe('Yes');
    expect(cell('Final PDF available')).toBe('Yes');
    expect(cell('Consent date')).toBe('2026-10-10');
    expect(cell(CONSENT_STATEMENTS[0].label)).toBe('Yes');
    expect(cell('I agree and consent to participate in the survey.')).toBe('Yes');
    expect(cell('Survey status')).toBe('In progress');
    expect(await db('audit_log').where({ action: 'APPLICATIONS_EXPORTED' }).first()).toBeTruthy();
  });

  it('rejects malformed dates', async () => {
    server = await createServer();
    await db('admin_users').insert({
      name: 'Administrator',
      email,
      password_hash: await argon2.hash(password, { type: argon2.argon2id }),
      is_active: true,
    });
    const login = await server.inject({
      method: 'POST',
      url: '/api/admin/auth/login',
      payload: { email, password },
    });

    const response = await server.inject({
      method: 'GET',
      url: '/api/admin/applications/export?from=10-10-2026',
      headers: { cookie: sessionCookie(login) },
    });

    expect(response.statusCode).toBe(400);
  });
});