"use strict";
var helper = require("./test-helper");
const pg = helper.pg

//first make pool hold 2 clients
pg.defaults.poolSize = 2;

const pool = new pg.Pool()

const suite = new helper.Suite()
suite.test('connecting to invalid port', (cb) => {
  const pool = new pg.Pool({ port: 13801 })
  pool.connect().catch(e => cb())
})

suite.test('errors emitted on pool', (cb) => {
  //get first client
  pool.connect(assert.success(function (client, done) {
    client.id = 1;
    client.query('SELECT NOW()', function () {
      pool.connect(assert.success(function (client2, done2) {
        client2.id = 2;
        var pidColName = 'procpid';
        helper.versionGTE(client2, '9.2.0', assert.success(function (isGreater) {
          var killIdleQuery = 'SELECT pid, (SELECT pg_terminate_backend(pid)) AS killed FROM pg_stat_activity WHERE state = $1';
          var params = ['idle'];
          if (!isGreater) {
            killIdleQuery = 'SELECT procpid, (SELECT pg_terminate_backend(procpid)) AS killed FROM pg_stat_activity WHERE current_query LIKE $1';
            params = ['%IDLE%']
          }

          pool.once('error', (err, brokenClient) => {
            assert.ok(err);
            assert.ok(brokenClient);
            assert.equal(client.id, brokenClient.id);
            cb()
          })

          //kill the connection from client
          client2.query(killIdleQuery, params, assert.success(function (res) {
            //check to make sure client connection actually was killed
            //return client2 to the pool
            done2();
            pool.end();
          }));
        }));
      }));

    })
  }));

})