import test from 'node:test';
import assert from 'node:assert/strict';
import { createLeadInserter, openDb } from '../src/db.mjs';
import { createRouter } from '../src/server/router.mjs';
import { registerWhatsAppRoutes } from '../src/server/routes/whatsapp.mjs';

function setup({ qr = 'raw-qr', checkNumber } = {}) {
  const db = openDb(':memory:');
  const calls = [];
  const whatsapp = {
    getStatus: () => ({ state: 'QR_REQUIRED', connected: false, qrExpiresAt: '2026-07-28T12:00:00.000Z' }),
    getQr: () => qr,
    connect: async () => { calls.push('connect'); },
    refreshQr: async () => { calls.push('refreshQr'); },
    checkNumber: checkNumber || (async (numero) => ({
      numero,
      status: 'confirmado',
      registered: true,
      resolvedNumber: '557599091780',
      variant: 'sem_nono_digito',
      candidatesChecked: 2
    })),
    disconnect: async (options) => { calls.push(options); }
  };
  const router = createRouter();
  registerWhatsAppRoutes(router, {
    db,
    whatsapp,
    toDataURL: async (value) => `data:image/png;base64,${value === 'raw-qr' ? 'encoded' : 'bad'}`
  });
  return { db, router, calls };
}

async function invoke(router, method, pathname, context = {}) {
  const responses = [];
  const matched = router.match(method, pathname);
  assert.ok(matched, `rota ausente: ${method} ${pathname}`);
  await matched.handler(null, null, {
    params: matched.params,
    body: null,
    json: (status, data) => responses.push({ status, data }),
    ...context
  });
  return responses[0];
}

test('status pode ser consultado por qualquer usuario autenticado sem segredos', async () => {
  const { router } = setup();
  const response = await invoke(router, 'GET', '/api/whatsapp/status', { user: { role: 'comercial' } });
  assert.equal(response.status, 200);
  assert.equal(response.data.state, 'QR_REQUIRED');
  assert.equal(JSON.stringify(response.data).includes('raw-qr'), false);
  assert.equal(JSON.stringify(response.data).includes('auth'), false);
});

test('acoes WhatsApp rejeitam usuario nao-admin', async () => {
  const { router, calls } = setup();
  for (const [method, pathname] of [
    ['POST', '/api/whatsapp/connect'],
    ['POST', '/api/whatsapp/refresh-qr'],
    ['POST', '/api/whatsapp/check-number'],
    ['GET', '/api/whatsapp/qr'],
    ['POST', '/api/whatsapp/disconnect'],
    ['POST', '/api/whatsapp/logout']
  ]) {
    const response = await invoke(router, method, pathname, { user: { role: 'comercial' } });
    assert.equal(response.status, 403);
  }
  assert.deepEqual(calls, []);
});

test('admin diagnostica numero sem enviar mensagem', async () => {
  const { db, router } = setup({
    checkNumber: async () => ({
      numero: '5511888880000',
      status: 'erro_temporario',
      registered: true,
      resolvedNumber: '557599091780',
      variant: 'sem_nono_digito',
      candidatesChecked: 2
    })
  });
  const response = await invoke(router, 'POST', '/api/whatsapp/check-number', {
    user: { role: 'admin' }, body: { numero: '5575999091780' }
  });
  assert.equal(response.status, 200);
  assert.equal(response.data.numero, '5575999091780');
  assert.equal(response.data.status, 'confirmado');
  assert.equal(response.data.registered, true);
  assert.equal(response.data.resolvedNumber, '557599091780');
  assert.equal(response.data.variant, 'sem_nono_digito');
  assert.equal(response.data.candidatesChecked, 2);
  assert.match(response.data.checked_at, /^\d{4}-\d{2}-\d{2} \d{2}:\d{2}:\d{2}$/);
  assert.deepEqual(
    { ...db.prepare('SELECT numero, status, numero_resolvido, variante FROM whatsapp_number_verifications').get() },
    {
      numero: '5575999091780',
      status: 'confirmado',
      numero_resolvido: '557599091780',
      variante: 'sem_nono_digito'
    }
  );
  db.close();
});

test('diagnostico definitivo nao cadastrado retorna 422 e persiste o resultado', async () => {
  const { db, router } = setup({
    checkNumber: async (numero) => ({
      numero,
      status: 'nao_cadastrado',
      registered: false,
      resolvedNumber: null,
      variant: null,
      candidatesChecked: 2
    })
  });
  const response = await invoke(router, 'POST', '/api/whatsapp/check-number', {
    user: { role: 'admin' }, body: { numero: '5511999990001' }
  });
  assert.equal(response.status, 422);
  assert.equal(response.data.status, 'nao_cadastrado');
  assert.match(response.data.checked_at, /^\d{4}-\d{2}-\d{2} \d{2}:\d{2}:\d{2}$/);
  assert.equal(db.prepare('SELECT status FROM whatsapp_number_verifications').get().status, 'nao_cadastrado');
  db.close();
});

test('timeout de diagnostico retorna 504 e persiste erro temporario solicitado', async () => {
  const { db, router } = setup({
    checkNumber: async () => {
      throw Object.assign(new Error('consulta excedeu o prazo'), {
        statusCode: 504,
        code: 'WHATSAPP_LOOKUP_TIMEOUT',
        status: 'erro_temporario',
        registered: false,
        resolvedNumber: null,
        variant: null,
        candidatesChecked: 2
      });
    }
  });
  const response = await invoke(router, 'POST', '/api/whatsapp/check-number', {
    user: { role: 'admin' }, body: { numero: '5511999990001' }
  });
  assert.equal(response.status, 504);
  assert.match(response.data.erro, /prazo/);
  assert.deepEqual(
    { ...db.prepare('SELECT numero, status, erro FROM whatsapp_number_verifications').get() },
    { numero: '5511999990001', status: 'erro_temporario', erro: 'consulta excedeu o prazo' }
  );
  db.close();
});

test('erro definitivo sem statusCode retorna 422 e ignora numero conflitante do provedor', async () => {
  const { db, router } = setup({
    checkNumber: async () => {
      throw Object.assign(new Error('numero nao cadastrado'), {
        numero: '5511888880000',
        status: 'nao_cadastrado',
        registered: false,
        resolvedNumber: null,
        variant: null
      });
    }
  });
  const response = await invoke(router, 'POST', '/api/whatsapp/check-number', {
    user: { role: 'admin' }, body: { numero: '+55 (11) 99999-0001' }
  });
  assert.equal(response.status, 422);
  assert.deepEqual(
    { ...db.prepare('SELECT numero, status FROM whatsapp_number_verifications').get() },
    { numero: '5511999990001', status: 'nao_cadastrado' }
  );
  db.close();
});

test('check-number valida leadId opcional antes de consultar provedor ou cache', async () => {
  let providerCalls = 0;
  const { db, router } = setup({
    checkNumber: async () => {
      providerCalls += 1;
      return { registered: true };
    }
  });
  createLeadInserter(db)({
    dedup_key: 'lead-check-1', empresa: 'Empresa', whatsapp: '5511999990001', cidade: 'Santos',
    produto_principal: 'ERP', produtos_json: '[]', pains_json: '[]', origem: 'teste',
    telefone_valido: 1, cnpj_valido: 0, empresa_valida: 1, score: 0, classificacao: 'ruim'
  });
  db.exec(`
    CREATE TRIGGER fail_verification_cache BEFORE INSERT ON whatsapp_number_verifications
    BEGIN SELECT RAISE(FAIL, 'cache nao deveria ser tocado'); END;
  `);

  for (const leadId of [true, '1', '01', '1e0', 1.5, 0, -1, NaN, 999]) {
    const response = await invoke(router, 'POST', '/api/whatsapp/check-number', {
      user: { role: 'admin' }, body: { leadId, numero: '5511999990001' }
    });
    assert.deepEqual(response, { status: 404, data: { erro: 'lead nao encontrado' } });
  }
  assert.equal(providerCalls, 0);
  assert.equal(db.prepare('SELECT COUNT(*) total FROM whatsapp_number_verifications').get().total, 0);
  db.close();
});

test('check-number usa numero do corpo mesmo com contexto de lead valido', async () => {
  let checkedNumber;
  const { db, router } = setup({
    checkNumber: async (numero) => {
      checkedNumber = numero;
      return { registered: false, resolvedNumber: null, variant: null, candidatesChecked: 2 };
    }
  });
  createLeadInserter(db)({
    dedup_key: 'lead-check-2', empresa: 'Empresa', whatsapp: '5511888880000', cidade: 'Santos',
    produto_principal: 'ERP', produtos_json: '[]', pains_json: '[]', origem: 'teste',
    telefone_valido: 1, cnpj_valido: 0, empresa_valida: 1, score: 0, classificacao: 'ruim'
  });

  const response = await invoke(router, 'POST', '/api/whatsapp/check-number', {
    user: { role: 'admin' }, body: { leadId: 1, numero: '5511999990001' }
  });

  assert.equal(response.status, 422);
  assert.equal(checkedNumber, '5511999990001');
  assert.equal(response.data.numero, '5511999990001');
  assert.equal(db.prepare('SELECT numero FROM whatsapp_number_verifications').get().numero, '5511999990001');
  db.close();
});

test('falha de cache no nao cadastrado preserva 422, JSON e timestamp nulo', async () => {
  const { db, router } = setup({
    checkNumber: async () => ({ registered: false, resolvedNumber: null, variant: null, candidatesChecked: 2 })
  });
  db.exec(`
    CREATE TRIGGER fail_verification_cache BEFORE INSERT ON whatsapp_number_verifications
    BEGIN SELECT RAISE(FAIL, 'cache indisponivel'); END;
  `);

  const response = await invoke(router, 'POST', '/api/whatsapp/check-number', {
    user: { role: 'admin' }, body: { numero: '5511999990001' }
  });

  assert.equal(response.status, 422);
  assert.equal(response.data.status, 'nao_cadastrado');
  assert.equal(response.data.checked_at, null);
  assert.match(response.data.aviso, /verificacao local/i);
  assert.doesNotMatch(response.data.aviso, /tente.*enviar|reenvie/i);
  db.close();
});

test('falha de cache no timeout de lookup preserva 504, JSON e timestamp nulo', async () => {
  const { db, router } = setup({
    checkNumber: async () => {
      throw Object.assign(new Error('consulta excedeu o prazo'), {
        statusCode: 504,
        status: 'erro_temporario',
        registered: false,
        resolvedNumber: null,
        variant: null,
        candidatesChecked: 2
      });
    }
  });
  db.exec(`
    CREATE TRIGGER fail_verification_cache BEFORE INSERT ON whatsapp_number_verifications
    BEGIN SELECT RAISE(FAIL, 'cache indisponivel'); END;
  `);

  const response = await invoke(router, 'POST', '/api/whatsapp/check-number', {
    user: { role: 'admin' }, body: { numero: '5511999990001' }
  });

  assert.equal(response.status, 504);
  assert.equal(response.data.status, 'erro_temporario');
  assert.equal(response.data.checked_at, null);
  assert.match(response.data.erro, /prazo/);
  assert.match(response.data.aviso, /verificacao local/i);
  assert.doesNotMatch(response.data.aviso, /tente.*enviar|reenvie/i);
  db.close();
});

test('admin conecta, obtem QR vigente como data URL e encerra ou remove sessao', async () => {
  const { router, calls } = setup();
  const user = { role: 'admin' };
  assert.equal((await invoke(router, 'POST', '/api/whatsapp/connect', { user })).status, 202);
  assert.equal((await invoke(router, 'POST', '/api/whatsapp/refresh-qr', { user })).status, 202);
  const qr = await invoke(router, 'GET', '/api/whatsapp/qr', { user });
  assert.deepEqual(qr, {
    status: 200,
    data: { qr: 'data:image/png;base64,encoded', expiresAt: '2026-07-28T12:00:00.000Z' }
  });
  assert.equal((await invoke(router, 'POST', '/api/whatsapp/disconnect', { user })).status, 200);
  assert.equal((await invoke(router, 'POST', '/api/whatsapp/logout', { user })).status, 200);
  assert.deepEqual(calls, ['connect', 'refreshQr', { logout: false }, { logout: true }]);
});

test('QR expirado retorna conflito sem chamar gerador', async () => {
  const { router } = setup({ qr: null });
  const response = await invoke(router, 'GET', '/api/whatsapp/qr', { user: { role: 'admin' } });
  assert.equal(response.status, 409);
  assert.match(response.data.erro, /QR/);
});