'use strict';

var testHelper = require('../support/test-helper');
var assert = require('../support/assert');

var cartodbServer = require('../../lib/server');
var ServerOptions = require('./ported/support/ported-server-options');
var testClient = require('./ported/support/test-client');

describe('overviews_queries', function () {
    var server;

    before(function () {
        server = cartodbServer(ServerOptions);
        server.setMaxListeners(0);
    });

    var IMAGE_EQUALS_TOLERANCE_PER_MIL = 2;

    after(function () {
        testHelper.rmdirRecursiveSync(global.environment.millstone.cache_basedir);
    });

    function imageCompareFn (fixture, done) {
        return function (err, tile) {
            if (err) {
                return done(err);
            }
            var referenceImagePath = './test/fixtures/' + fixture;
            assert.imageBufferIsSimilarToFile(tile.body, referenceImagePath, IMAGE_EQUALS_TOLERANCE_PER_MIL, done);
        };
    }

    it('should not use overview for tables without overviews', function (done) {
        testClient.getTile(testClient.defaultTableMapConfig('test_table'), 1, 0, 0,
            imageCompareFn('test_table_1_0_0.png', done)
        );
    });

    it('should not use overview for tables without overviews at z=2', function (done) {
        testClient.getTile(testClient.defaultTableMapConfig('test_table'), 2, 1, 1,
            imageCompareFn('test_table_2_1_1.png', done)
        );
    });

    it('should not use overview for tables without overviews at z=2', function (done) {
        testClient.getTile(testClient.defaultTableMapConfig('test_table'), 3, 3, 3,
            imageCompareFn('test_table_3_3_3.png', done)
        );
    });

    it('should use overview for zoom level 1', function (done) {
        testClient.getTile(testClient.defaultTableMapConfig('test_table_overviews'), 1, 0, 0,
            imageCompareFn('_vovw_1_test_table_1_0_0.png', done)
        );
    });

    it('should use overview for zoom level 1', function (done) {
        testClient.getTile(testClient.defaultTableMapConfig('test_table_overviews'), 2, 1, 1,
            imageCompareFn('_vovw_2_test_table_2_1_1.png', done)
        );
    });

    it('should not use overview for zoom level 3', function (done) {
        testClient.getTile(testClient.defaultTableMapConfig('test_table_overviews'), 3, 3, 3,
            imageCompareFn('test_table_3_3_3.png', done)
        );
    });
});