'use strict';

const test = require('node:test');
const assert = require('node:assert/strict');
const {
  buildCategoryFilterClause,
  buildIndicatorsQuery,
  buildRankingCompletoQuery,
  buildTicketContextQuery,
  buildBaselineDailyQuery,
  buildExtendedMetricsQuery,
} = require('../src/v2/queries');
const { assertReadOnlySql, FORBIDDEN_KEYWORDS } = require('../src/v2/sqlGuard');
const { resolvePeriod } = require('../src/v2/period');
const { loadConfig } = require('../src/v2/config');

const config = loadConfig();
const period = resolvePeriod('2026-08-20', new Date(2026, 7, 24), config);

test('assertReadOnlySql aceita SELECT e devolve a mesma string', () => {
  const sql = 'SELECT * FROM glpi_tickets';
  assert.equal(assertReadOnlySql(sql), sql);
});

test('assertReadOnlySql bloqueia qualquer verbo de escrita', () => {
  for (const verbo of FORBIDDEN_KEYWORDS) {
    assert.throws(() => assertReadOnlySql(`${verbo} INTO glpi_tickets ...`), /Query bloqueada/);
  }
});

test('assertReadOnlySql nao gera falso positivo em nomes de coluna legitimos do GLPI (date_creation, updater...)', () => {
  assert.doesNotThrow(() =>
    assertReadOnlySql('SELECT date_creation, users_id_lastupdater FROM glpi_tickets')
  );
});

test('buildCategoryFilterClause usa os IDs configurados (7,16,17,18) e nao verbo de escrita', () => {
  const clause = buildCategoryFilterClause([7, 16, 17, 18]);
  assert.match(clause, /id = 7/);
  assert.match(clause, /id = 16/);
  assert.match(clause, /id = 17/);
  assert.match(clause, /id = 18/);
  assert.doesNotThrow(() => assertReadOnlySql(clause));
});

test('buildCategoryFilterClause rejeita id invalido (defesa contra injecao via config)', () => {
  assert.throws(() => buildCategoryFilterClause([7, 'DROP TABLE x']));
});

test('buildIndicatorsQuery e somente leitura e preserva a logica da V1 (abertos por date, fechados por closedate)', () => {
  const sql = buildIndicatorsQuery(period, config);
  assert.doesNotThrow(() => assertReadOnlySql(sql));
  assert.match(sql, /is_deleted = false/);
  assert.match(sql, /date >= '2026-08-20'/);
  assert.match(sql, /closedate >= '2026-08-20'/);
  assert.match(sql, /status NOT IN \(5, 6\)/);
  assert.match(sql, /priority >= 4/);
});

test('buildIndicatorsQuery rejeita data em formato invalido (protecao contra interpolacao livre)', () => {
  const periodoRuim = { ...period, data_inicio: "2026-08-20'; DROP TABLE glpi_tickets; --", data_fim: period.data_fim };
  assert.throws(() => buildIndicatorsQuery(periodoRuim, config), /Data invalida/);
});

test('buildRankingCompletoQuery gera SQL somente leitura para categoria e cliente, e expoe o id (nao so o nome)', () => {
  const sqlCategoria = buildRankingCompletoQuery(period, config, 'categoria');
  const sqlCliente = buildRankingCompletoQuery(period, config, 'cliente');
  assert.doesNotThrow(() => assertReadOnlySql(sqlCategoria));
  assert.doesNotThrow(() => assertReadOnlySql(sqlCliente));
  assert.match(sqlCategoria, /glpi_itilcategories/);
  assert.match(sqlCliente, /glpi_entities/);
  assert.match(sqlCategoria, /SELECT t\.itilcategories_id AS id,/);
  assert.match(sqlCliente, /SELECT t\.entities_id AS id,/);
});

test('buildTicketContextQuery limita linhas via LIMIT e nao seleciona tabelas de escrita', () => {
  const sql = buildTicketContextQuery(period, config);
  assert.doesNotThrow(() => assertReadOnlySql(sql));
  assert.match(sql, new RegExp(`LIMIT ${config.TICKET_CONTEXT_SQL_LIMIT}`));
  assert.match(sql, /LEFT\(t\.content, 600\) AS description/);
});

test('buildBaselineDailyQuery agrupa por dia e por dimensao (categoria/cliente) sem verbo de escrita, e nao faz JOIN com tabela de dimensao (so glpi_tickets)', () => {
  const janela = period.baseline.rolling;
  const sql = buildBaselineDailyQuery(janela, config, 'categoria', period);
  assert.doesNotThrow(() => assertReadOnlySql(sql));
  assert.match(sql, /GROUP BY dia,/);
  assert.doesNotMatch(sql, /LEFT JOIN glpi_itilcategories/);
  assert.doesNotMatch(sql, /LEFT JOIN glpi_entities/);
});

test('buildBaselineDailyQuery restringe o agrupamento aos IDs ativos no periodo atual (evita agrupar a base inteira de entidades/categorias)', () => {
  const janela = period.baseline.rolling;
  const sqlCliente = buildBaselineDailyQuery(janela, config, 'cliente', period);
  assert.doesNotThrow(() => assertReadOnlySql(sqlCliente));
  // a subquery de IDs ativos usa o periodo ATUAL (data_inicio do relatorio), nao a janela historica
  assert.match(sqlCliente, new RegExp(`t2\\.date >= '${period.data_inicio}'`));
  assert.match(sqlCliente, /AND t\.entities_id IN \(/);
});

test('buildExtendedMetricsQuery e somente leitura mesmo usando campos ainda nao validados no schema real', () => {
  const sql = buildExtendedMetricsQuery(period, config);
  assert.doesNotThrow(() => assertReadOnlySql(sql));
  assert.match(sql, /time_to_resolve/);
});

test('nenhuma query gerada para nenhum tipo de periodo conhecido contem verbo de escrita (varredura ampla)', () => {
  const referencias = [new Date(2026, 7, 18), new Date(2026, 7, 19), new Date(2026, 7, 20), new Date(2026, 7, 21), new Date(2026, 7, 24)];
  for (const ref of referencias) {
    const p = resolvePeriod('', ref, config);
    assert.doesNotThrow(() => assertReadOnlySql(buildIndicatorsQuery(p, config)));
    assert.doesNotThrow(() => assertReadOnlySql(buildTicketContextQuery(p, config)));
    assert.doesNotThrow(() => assertReadOnlySql(buildRankingCompletoQuery(p, config, 'categoria')));
    assert.doesNotThrow(() => assertReadOnlySql(buildRankingCompletoQuery(p, config, 'cliente')));
    assert.doesNotThrow(() => assertReadOnlySql(buildExtendedMetricsQuery(p, config)));
    if (p.baseline.rolling) {
      assert.doesNotThrow(() => assertReadOnlySql(buildBaselineDailyQuery(p.baseline.rolling, config, 'categoria', p)));
      assert.doesNotThrow(() => assertReadOnlySql(buildBaselineDailyQuery(p.baseline.rolling, config, 'cliente', p)));
    }
  }
});