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

var suite = new helper.Suite();

suite.test("pool callback behavior", done => {
  //test weird callback behavior with node-pool
  const pool = new pg.Pool();
  pool.connect(function(err) {
    assert.isNull(err);
    arguments[1].emit("drain");
    arguments[2]();
    pool.end(done);
  });
});

suite.test("callback API", done => {
  const client = new helper.Client();
  client.query("CREATE TEMP TABLE peep(name text)");
  client.query("INSERT INTO peep(name) VALUES ($1)", ["brianc"]);
  const config = {
    text: "INSERT INTO peep(name) VALUES ($1)",
    values: ["brian"]
  };
  client.query(config);
  client.query("INSERT INTO peep(name) VALUES ($1)", ["aaron"]);

  client.query("SELECT * FROM peep ORDER BY name", (err, res) => {
    assert(!err);
    assert.equal(res.rowCount, 3);
    assert.deepEqual(res.rows, [
      {
        name: "aaron"
      },
      {
        name: "brian"
      },
      {
        name: "brianc"
      }
    ]);
    done();
  });
  client.connect(err => {
    assert(!err);
    client.once("drain", () => client.end());
  });
});

suite.test("executing nested queries", function(done) {
  const pool = new pg.Pool();
  pool.connect(
    assert.calls(function(err, client, release) {
      assert.isNull(err);
      client.query(
        "select now as now from NOW()",
        assert.calls(function(err, result) {
          assert.equal(new Date().getYear(), result.rows[0].now.getYear());
          client.query(
            "select now as now_again FROM NOW()",
            assert.calls(function() {
              client.query(
                "select * FROM NOW()",
                assert.calls(function() {
                  assert.ok("all queries hit");
                  release();
                  pool.end(done);
                })
              );
            })
          );
        })
      );
    })
  );
});

suite.test("raises error if cannot connect", function() {
  var connectionString = "pg://sfalsdkf:asdf@localhost/ieieie";
  const pool = new pg.Pool({ connectionString: connectionString });
  pool.connect(
    assert.calls(function(err, client, done) {
      assert.ok(err, "should have raised an error");
      done();
    })
  );
});

suite.test("query errors are handled and do not bubble if callback is provded", function(done) {
    const pool = new pg.Pool();
    pool.connect(
      assert.calls(function(err, client, release) {
        assert.isNull(err);
        client.query(
          "SELECT OISDJF FROM LEIWLISEJLSE",
          assert.calls(function(err, result) {
            assert.ok(err);
            release()
            pool.end(done)
          })
        );
      })
    );
  }
);

suite.test("callback is fired once and only once", function(done) {
  const pool = new pg.Pool()
  pool.connect(
    assert.calls(function(err, client, release) {
      assert.isNull(err);
      client.query("CREATE TEMP TABLE boom(name varchar(10))");
      var callCount = 0;
      client.query(
        [
          "INSERT INTO boom(name) VALUES('hai')",
          "INSERT INTO boom(name) VALUES('boom')",
          "INSERT INTO boom(name) VALUES('zoom')"
        ].join(";"),
        function(err, callback) {
          assert.equal(
            callCount++,
            0,
            "Call count should be 0.  More means this callback fired more than once."
          );
          release()
          pool.end(done)
        }
      );
    })
  );
});

suite.test("can provide callback and config object", function(done) {
  const pool = new pg.Pool()
  pool.connect(
    assert.calls(function(err, client, release) {
      assert.isNull(err);
      client.query(
        {
          name: "boom",
          text: "select NOW()"
        },
        assert.calls(function(err, result) {
          assert.isNull(err);
          assert.equal(result.rows[0].now.getYear(), new Date().getYear());
          release();
          pool.end(done)
        })
      );
    })
  );
});

suite.test("can provide callback and config and parameters", function(done) {
  const pool = new pg.Pool()
  pool.connect(
    assert.calls(function(err, client, release) {
      assert.isNull(err);
      var config = {
        text: "select $1::text as val"
      };
      client.query(
        config,
        ["hi"],
        assert.calls(function(err, result) {
          assert.isNull(err);
          assert.equal(result.rows.length, 1);
          assert.equal(result.rows[0].val, "hi");
          release()
          pool.end(done)
        })
      );
    })
  );
});

suite.test("null and undefined are both inserted as NULL", function(done) {
  const pool = new pg.Pool()
  pool.connect(
    assert.calls(function(err, client, release) {
      assert.isNull(err);
      client.query(
        "CREATE TEMP TABLE my_nulls(a varchar(1), b varchar(1), c integer, d integer, e date, f date)"
      );
      client.query(
        "INSERT INTO my_nulls(a,b,c,d,e,f) VALUES ($1,$2,$3,$4,$5,$6)",
        [null, undefined, null, undefined, null, undefined]
      );
      client.query(
        "SELECT * FROM my_nulls",
        assert.calls(function(err, result) {
          assert.isNull(err);
          assert.equal(result.rows.length, 1);
          assert.isNull(result.rows[0].a);
          assert.isNull(result.rows[0].b);
          assert.isNull(result.rows[0].c);
          assert.isNull(result.rows[0].d);
          assert.isNull(result.rows[0].e);
          assert.isNull(result.rows[0].f);
          pool.end(done)
          release();
        })
      );
    })
  );
});