'use strict';

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

var assert = require('../../support/assert');
var _ = require('underscore');
var querystring = require('querystring');
var step = require('step');
var mapnik = require('windshaft').mapnik;
var cartodbServer = require('../../../lib/server');
var ServerOptions = require('./support/ported-server-options');
var LayergroupToken = require('../../../lib/models/layergroup-token');

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

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

    mapnik.register_system_fonts();
    var available_system_fonts = _.keys(mapnik.fontFiles());

    var IMAGE_EQUALS_TOLERANCE_PER_MIL = 20;

    function checkCORSHeaders (res) {
        assert.strictEqual(
            res.headers['access-control-allow-headers'],
            'X-Requested-With, X-Prototype-Version, X-CSRF-Token, Authorization'
        );
        assert.strictEqual(res.headers['access-control-allow-origin'], '*');
    }

    // See https://github.com/Vizzuality/Windshaft/issues/70
    it('post layergroup with encoding in content-type', function (done) {
        var layergroup = {
            version: '1.0.1',
            layers: [
                {
                    options: {
                        sql: 'select the_geom from test_table limit 1',
                        cartocss: '#layer { marker-fill:red }',
                        cartocss_version: '2.0.1',
                        geom_column: 'the_geom'
                    }
                }
            ]
        };
        var expected_token;
        step(
            function do_post () {
                var next = this;
                assert.response(server, {
                    url: '/api/v1/map',
                    method: 'POST',
                    headers: { host: 'localhost', 'Content-Type': 'application/json; charset=utf-8' },
                    data: JSON.stringify(layergroup)
                }, {}, function (res) {
                    assert.strictEqual(res.statusCode, 200, res.body);
                    var parsedBody = JSON.parse(res.body);
                    expected_token = LayergroupToken.parse(parsedBody.layergroupid).token;
                    next();
                });
            },
            function finish (err) {
                if (err) {
                    return done(err);
                }
                var keysToDelete = { 'user:localhost:mapviews:global': 5 };
                keysToDelete['map_cfg|' + expected_token] = 0;
                testHelper.deleteRedisKeys(keysToDelete, done);
            }
        );
    });

    // See https://github.com/Vizzuality/Windshaft/issues/71
    it('single layer with multiple css sections', function (done) {
        var layergroup = {
            version: '1.0.1',
            layers: [
                {
                    options: {
                        sql: 'select st_setsrid(st_makepoint(0, 0), 4326) as the_geom',
                        cartocss: '#layer { marker-fill:red; } #layer { marker-width:100; }',
                        cartocss_version: '2.0.1',
                        geom_column: 'the_geom'
                    }
                }
            ]
        };
        var expected_token;
        step(
            function do_post () {
                var next = this;
                assert.response(server, {
                    url: '/api/v1/map',
                    method: 'POST',
                    headers: { host: 'localhost', 'Content-Type': 'application/json' },
                    data: JSON.stringify(layergroup)
                }, {}, function (res) {
                    assert.strictEqual(res.statusCode, 200, res.body);
                    var parsedBody = JSON.parse(res.body);
                    expected_token = LayergroupToken.parse(parsedBody.layergroupid).token;
                    next();
                });
            },
            function do_get_tile (err) {
                assert.ifError(err);
                var next = this;
                assert.response(server, {
                    url: '/api/v1/map/' + expected_token + '/0/0/0.png',
                    method: 'GET',
                    encoding: 'binary',
                    headers: { host: 'localhost' }
                }, {}, function (res) {
                    assert.strictEqual(res.statusCode, 200, res.body);
                    assert.strictEqual(res.headers['content-type'], 'image/png');
                    checkCORSHeaders(res);
                    var referenceImagePath = './test/fixtures/test_bigpoint_red.png';
                    assert.imageBufferIsSimilarToFile(res.body, referenceImagePath, IMAGE_EQUALS_TOLERANCE_PER_MIL,
                        function (err) {
                            next(err);
                        });
                });
            },
            function finish (err) {
                if (err) {
                    return done(err);
                }
                var keysToDelete = { 'user:localhost:mapviews:global': 5 };
                keysToDelete['map_cfg|' + expected_token] = 0;
                testHelper.deleteRedisKeys(keysToDelete, done);
            }
        );
    });

    it('layergroup with 2 layers, each with its style', function (done) {
        var layergroup = {
            version: '1.0.1',
            layers: [
                {
                    options: {
                        sql: 'select cartodb_id, ST_Translate(the_geom, 50, 0) as the_geom from test_table limit 2',
                        cartocss: '#layer { marker-fill:red; marker-width:32; marker-allow-overlap:true; }',
                        cartocss_version: '2.0.1',
                        interactivity: ['cartodb_id'],
                        geom_column: 'the_geom'
                    }
                },
                {
                    options: {
                        sql: 'select cartodb_id, ST_Translate(the_geom, -50, 0) as the_geom from test_table limit 2 offset 2',
                        cartocss: '#layer { marker-fill:blue; marker-allow-overlap:true; }',
                        cartocss_version: '2.0.2',
                        interactivity: ['cartodb_id'],
                        geom_column: 'the_geom'
                    }
                }
            ]
        };

        var expected_token;
        step(
            function do_post () {
                var next = this;
                assert.response(server, {
                    url: '/api/v1/map',
                    method: 'POST',
                    headers: { host: 'localhost', 'Content-Type': 'application/json' },
                    data: JSON.stringify(layergroup)
                }, {}, function (res) {
                    assert.strictEqual(res.statusCode, 200, res.statusCode + ': ' + res.body);
                    // CORS headers should be sent with response
                    // from layergroup creation via POST
                    checkCORSHeaders(res);
                    var parsedBody = JSON.parse(res.body);
                    if (expected_token) {
                        assert.deepStrictEqual(parsedBody, { layergroupid: expected_token, layercount: 2 });
                    } else {
                        expected_token = LayergroupToken.parse(parsedBody.layergroupid).token;
                    }
                    next(null, res);
                });
            },
            function do_get_tile (err) {
                assert.ifError(err);
                var next = this;
                assert.response(server, {
                    url: '/api/v1/map/' + expected_token + '/0/0/0.png',
                    method: 'GET',
                    encoding: 'binary',
                    headers: { host: 'localhost' }
                }, {}, function (res) {
                    assert.strictEqual(res.statusCode, 200, res.body);
                    assert.strictEqual(res.headers['content-type'], 'image/png');
                    var referenceImagePath = './test/acceptance/ported/fixtures/test_table_0_0_0_multilayer1.png';
                    assert.imageBufferIsSimilarToFile(res.body, referenceImagePath,
                        IMAGE_EQUALS_TOLERANCE_PER_MIL, function (err) {
                            next(err);
                        });
                });
            },
            function do_get_grid0 (err) {
                assert.ifError(err);
                var next = this;
                assert.response(server, {
                    url: '/api/v1/map/' + expected_token + '/0/0/0/0.grid.json',
                    method: 'GET',
                    headers: { host: 'localhost' }
                }, {}, function (res) {
                    assert.strictEqual(res.statusCode, 200, res.body);
                    assert.strictEqual(res.headers['content-type'], 'application/json; charset=utf-8');
                    assert.utfgridEqualsFile(
                        res.body, './test/acceptance/ported/fixtures/test_table_0_0_0_multilayer1.layer0.grid.json', 2,
                        function (err/*, similarity */) {
                            next(err);
                        });
                });
            },
            function do_get_grid1 (err) {
                assert.ifError(err);
                var next = this;
                assert.response(server, {
                    url: '/api/v1/map/' + expected_token +
                  '/1/0/0/0.grid.json?interactivity=cartodb_id',
                    method: 'GET',
                    headers: { host: 'localhost' }
                }, {}, function (res) {
                    assert.strictEqual(res.statusCode, 200, res.body);
                    assert.strictEqual(res.headers['content-type'], 'application/json; charset=utf-8');
                    assert.utfgridEqualsFile(
                        res.body, './test/acceptance/ported/fixtures/test_table_0_0_0_multilayer1.layer1.grid.json', 2,
                        function (err/*, similarity */) {
                            next(err);
                        });
                });
            },
            function finish (err) {
                if (err) {
                    return done(err);
                }
                var keysToDelete = { 'user:localhost:mapviews:global': 5 };
                keysToDelete['map_cfg|' + expected_token] = 0;
                testHelper.deleteRedisKeys(keysToDelete, done);
            }
        );
    });

    it('layergroup with 2 layers, each with its style, GET method', function (done) {
        var layergroup = {
            version: '1.0.1',
            layers: [
                {
                    options: {
                        sql: 'select cartodb_id, ST_Translate(the_geom, 50, 0) as the_geom from test_table limit 2',
                        cartocss: '#layer { marker-fill:red; marker-width:32; marker-allow-overlap:true; }',
                        cartocss_version: '2.0.1',
                        interactivity: ['cartodb_id'],
                        geom_column: 'the_geom'
                    }
                },
                {
                    options: {
                        sql: 'select cartodb_id, ST_Translate(the_geom, -50, 0) as the_geom from test_table limit 2 offset 2',
                        cartocss: '#layer { marker-fill:blue; marker-allow-overlap:true; }',
                        cartocss_version: '2.0.2',
                        interactivity: ['cartodb_id'],
                        geom_column: 'the_geom'
                    }
                }
            ]
        };

        var expected_token;
        step(
            function do_get () {
                var next = this;
                assert.response(server, {
                    url: '/api/v1/map?' + querystring.stringify({
                        config: JSON.stringify(layergroup)
                    }),
                    method: 'GET',
                    headers: { host: 'localhost', 'Content-Type': 'application/json' }
                }, {}, function (res) {
                    assert.strictEqual(res.statusCode, 200, res.body);
                    // CORS headers should be sent with response
                    // from layergroup creation via GET
                    // see https://github.com/CartoDB/Windshaft/issues/92
                    checkCORSHeaders(res);
                    var parsedBody = JSON.parse(res.body);
                    if (expected_token) {
                        assert.deepStrictEqual(parsedBody, { layergroupid: expected_token, layercount: 2 });
                    } else {
                        expected_token = LayergroupToken.parse(parsedBody.layergroupid).token;
                    }
                    next(null, res);
                });
            },
            function do_get_tile (err) {
                assert.ifError(err);
                var next = this;
                assert.response(server, {
                    url: '/api/v1/map/' + expected_token + '/0/0/0.png',
                    method: 'GET',
                    encoding: 'binary',
                    headers: { host: 'localhost' }
                }, {}, function (res) {
                    assert.strictEqual(res.statusCode, 200, res.body);
                    assert.strictEqual(res.headers['content-type'], 'image/png');
                    var referenceImagePath = './test/acceptance/ported/fixtures/test_table_0_0_0_multilayer1.png';
                    assert.imageBufferIsSimilarToFile(res.body, referenceImagePath,
                        IMAGE_EQUALS_TOLERANCE_PER_MIL, function (err) {
                            next(err);
                        });
                });
            },
            function do_get_grid0 (err) {
                assert.ifError(err);
                var next = this;
                assert.response(server, {
                    url: '/api/v1/map/' + expected_token +
                  '/0/0/0/0.grid.json?interactivity=cartodb_id',
                    method: 'GET',
                    headers: { host: 'localhost' }
                }, {}, function (res) {
                    assert.strictEqual(res.statusCode, 200, res.body);
                    assert.strictEqual(res.headers['content-type'], 'application/json; charset=utf-8');
                    assert.utfgridEqualsFile(
                        res.body, './test/acceptance/ported/fixtures/test_table_0_0_0_multilayer1.layer0.grid.json', 2,
                        function (err/*, similarity */) {
                            next(err);
                        });
                });
            },
            function do_get_grid1 (err) {
                assert.ifError(err);
                var next = this;
                assert.response(server, {
                    url: '/api/v1/map/' + expected_token +
                  '/1/0/0/0.grid.json?interactivity=cartodb_id',
                    method: 'GET',
                    headers: { host: 'localhost' }
                }, {}, function (res) {
                    assert.strictEqual(res.statusCode, 200, res.body);
                    assert.strictEqual(res.headers['content-type'], 'application/json; charset=utf-8');
                    assert.utfgridEqualsFile(
                        res.body, './test/acceptance/ported/fixtures/test_table_0_0_0_multilayer1.layer1.grid.json', 2,
                        function (err/*, similarity */) {
                            next(err);
                        });
                });
            },
            function finish (err) {
                if (err) {
                    return done(err);
                }
                var keysToDelete = { 'user:localhost:mapviews:global': 5 };
                keysToDelete['map_cfg|' + expected_token] = 0;
                testHelper.deleteRedisKeys(keysToDelete, done);
            }
        );
    });

    it('layergroup with 2 layers, GET method, JSONP', function (done) {
        var layergroup = {
            version: '1.0.1',
            layers: [
                {
                    options: {
                        sql: 'select cartodb_id, ST_Translate(the_geom, 50, 0) as the_geom from test_table limit 2',
                        cartocss: '#layer { marker-fill:red; marker-width:32; marker-allow-overlap:true; }',
                        cartocss_version: '2.0.1',
                        interactivity: ['cartodb_id'],
                        geom_column: 'the_geom'
                    }
                },
                {
                    options: {
                        sql: 'select cartodb_id, ST_Translate(the_geom, -50, 0) as the_geom from test_table limit 2 offset 2',
                        cartocss: '#layer { marker-fill:blue; marker-allow-overlap:true; }',
                        cartocss_version: '2.0.2',
                        interactivity: ['cartodb_id'],
                        geom_column: 'the_geom'
                    }
                }
            ]
        };

        var expected_token;
        step(
            function do_get_token () {
                var next = this;
                assert.response(server, {
                    url: '/api/v1/map?' + querystring.stringify({
                        config: JSON.stringify(layergroup),
                        callback: 'jsonp_test'
                    }),
                    method: 'GET',
                    headers: { host: 'localhost', 'Content-Type': 'application/json' }
                }, {}, function (res, err) { next(err, res); });
            },
            function do_check_token (err, res) {
                assert.ifError(err);
                assert.strictEqual(res.statusCode, 200, res.body);

                var didRunJsonCallback = false;
                // jshint ignore:start
                function jsonp_test (body) {
                    assert.ok(body.layergroupid);
                    expected_token = LayergroupToken.parse(body.layergroupid).token;
                    assert.ok(body.metadata.layers.length === 2);
                    assert.ok(body.metadata.layers[0].type === 'mapnik');
                    assert.ok(body.metadata.layers[0].meta);
                    assert.ok(body.metadata.layers[1].type === 'mapnik');
                    assert.ok(body.metadata.layers[1].meta);
                    didRunJsonCallback = true;
                }
                eval(res.body);
                // jshint ignore:end
                assert.ok(didRunJsonCallback);

                // TODO: check caching headers !
                return null;
            },
            function do_get_tile (err) {
                assert.ifError(err);
                var next = this;
                assert.response(server, {
                    url: '/api/v1/map/' + expected_token + '/0/0/0.png',
                    method: 'GET',
                    encoding: 'binary',
                    headers: { host: 'localhost' }
                }, {}, function (res) {
                    assert.strictEqual(res.statusCode, 200, res.body);
                    assert.strictEqual(res.headers['content-type'], 'image/png');
                    var referenceImagePath = './test/acceptance/ported/fixtures/test_table_0_0_0_multilayer1.png';
                    assert.imageBufferIsSimilarToFile(res.body, referenceImagePath,
                        IMAGE_EQUALS_TOLERANCE_PER_MIL, function (err) {
                            next(err);
                        });
                });
            },
            function do_get_grid0 (err) {
                assert.ifError(err);
                var next = this;
                assert.response(server, {
                    url: '/api/v1/map/' + expected_token +
                  '/0/0/0/0.grid.json?interactivity=cartodb_id',
                    method: 'GET',
                    headers: { host: 'localhost' }
                }, {}, function (res) {
                    assert.strictEqual(res.statusCode, 200, res.body);
                    assert.strictEqual(res.headers['content-type'], 'application/json; charset=utf-8');
                    assert.utfgridEqualsFile(
                        res.body, './test/acceptance/ported/fixtures/test_table_0_0_0_multilayer1.layer0.grid.json', 2,
                        function (err/*, similarity */) {
                            next(err);
                        });
                });
            },
            function do_get_grid1 (err) {
                assert.ifError(err);
                var next = this;
                assert.response(server, {
                    url: '/api/v1/map/' + expected_token +
                  '/1/0/0/0.grid.json?interactivity=cartodb_id',
                    method: 'GET',
                    headers: { host: 'localhost' }
                }, {}, function (res) {
                    assert.strictEqual(res.statusCode, 200, res.body);
                    assert.strictEqual(res.headers['content-type'], 'application/json; charset=utf-8');
                    assert.utfgridEqualsFile(
                        res.body, './test/acceptance/ported/fixtures/test_table_0_0_0_multilayer1.layer1.grid.json', 2,
                        function (err/*, similarity */) {
                            next(err);
                        });
                });
            },
            function finish (err) {
                if (err) {
                    return done(err);
                }
                var keysToDelete = { 'user:localhost:mapviews:global': 5 };
                keysToDelete['map_cfg|' + expected_token] = 0;
                testHelper.deleteRedisKeys(keysToDelete, done);
            }
        );
    });

    it('layergroup with 3 mixed layers, mapnik torque and attributes', function (done) {
        var layergroup = {
            version: '1.1.0',
            layers: [
                {
                    options: {
                        sql: 'select cartodb_id, ST_Translate(the_geom, 50, 0) as the_geom from test_table limit 2',
                        cartocss: '#layer { marker-fill:red; marker-width:32; marker-allow-overlap:true; }',
                        cartocss_version: '2.0.1',
                        interactivity: ['cartodb_id'],
                        geom_column: 'the_geom'
                    }
                },
                {
                    options: {
                        sql: 'select cartodb_id, cartodb_id*10 as n, ST_Translate(the_geom, -50, 0) as the_geom' +
                   ' from test_table ORDER BY cartodb_id limit 2 offset 2',
                        cartocss: '#layer { marker-fill:blue; marker-allow-overlap:true; }',
                        cartocss_version: '2.0.2',
                        interactivity: ['cartodb_id'],
                        attributes: { id: 'cartodb_id', columns: ['n'] },
                        geom_column: 'the_geom'
                    }
                },
                {
                    type: 'torque',
                    options: {
                        sql: "select cartodb_id, '1970-01-01'::date as d," +
                   ' ST_SnapToGrid(the_geom_webmercator,1e10) as the_geom_webmercator ' +
                   'from test_table WHERE cartodb_id = 4',
                        cartocss: 'Map { -torque-frame-count:1; -torque-resolution:1; -torque-time-attribute:d; ' +
                   '-torque-aggregation-function:"count(*)"; } #layer { marker-fill:blue; marker-allow-overlap:true; }'
                    }
                }
            ]
        };

        var expected_token;
        step(
            function do_get () {
                var next = this;
                assert.response(server, {
                    url: '/api/v1/map',
                    method: 'POST',
                    headers: { host: 'localhost', 'Content-Type': 'application/json' },
                    data: JSON.stringify(layergroup)
                }, {}, function (res, err) {
                    next(err, res);
                });
            },
            function check_create (err, res) {
                assert.ifError(err);
                assert.strictEqual(res.statusCode, 200, res.body);
                var parsed = JSON.parse(res.body);
                expected_token = LayergroupToken.parse(parsed.layergroupid).token;
                return null;
            },
            function do_get_tile (err) {
                assert.ifError(err);
                var next = this;
                assert.response(server, {
                    url: '/api/v1/map/' + expected_token + '/0/0/0.png',
                    method: 'GET',
                    encoding: 'binary',
                    headers: { host: 'localhost' }
                }, {}, function (res) {
                    assert.strictEqual(res.statusCode, 200, res.body);
                    assert.strictEqual(res.headers['content-type'], 'image/png');
                    var referenceImagePath = './test/acceptance/ported/fixtures/test_table_0_0_0_multilayer1.png';
                    assert.imageBufferIsSimilarToFile(res.body, referenceImagePath,
                        IMAGE_EQUALS_TOLERANCE_PER_MIL, function (err) {
                            next(err);
                        });
                });
            },
            function do_get_grid0 (err) {
                assert.ifError(err);
                var next = this;
                assert.response(server, {
                    url: '/api/v1/map/' + expected_token +
                  '/0/0/0/0.grid.json?interactivity=cartodb_id',
                    method: 'GET',
                    headers: { host: 'localhost' }
                }, {}, function (res) {
                    assert.strictEqual(res.statusCode, 200, res.body);
                    assert.strictEqual(res.headers['content-type'], 'application/json; charset=utf-8');
                    assert.utfgridEqualsFile(
                        res.body, './test/acceptance/ported/fixtures/test_table_0_0_0_multilayer1.layer0.grid.json', 2,
                        function (err/*, similarity */) {
                            next(err);
                        });
                });
            },
            function do_get_grid1 (err) {
                assert.ifError(err);
                var next = this;
                assert.response(server, {
                    url: '/api/v1/map/' + expected_token +
                  '/1/0/0/0.grid.json?interactivity=cartodb_id',
                    method: 'GET',
                    headers: { host: 'localhost' }
                }, {}, function (res) {
                    assert.strictEqual(res.statusCode, 200, res.body);
                    assert.strictEqual(res.headers['content-type'], 'application/json; charset=utf-8');
                    assert.utfgridEqualsFile(
                        res.body, './test/acceptance/ported/fixtures/test_table_0_0_0_multilayer1.layer1.grid.json', 2,
                        function (err/*, similarity */) {
                            next(err);
                        });
                });
            },
            function do_get_attr1 (err) {
                assert.ifError(err);
                var next = this;
                assert.response(server, {
                    url: '/api/v1/map/' + expected_token + '/1/attributes/4',
                    method: 'GET',
                    headers: { host: 'localhost' }
                }, {}, function (res, err) {
                    next(err, res);
                });
            },
            function do_check_attr1 (err, res) {
                assert.ifError(err);
                assert.strictEqual(res.statusCode, 200, res.body);
                assert.strictEqual(res.headers['content-type'], 'application/json; charset=utf-8');
                var parsed = JSON.parse(res.body);
                assert.deepStrictEqual(parsed, { n: 40 });
                return null;
            },
            function do_get_torque2 (err) {
                assert.ifError(err);
                var next = this;
                assert.response(server, {
                    url: '/api/v1/map/' + expected_token + '/2/0/0/0.json.torque',
                    method: 'GET',
                    headers: { host: 'localhost' }
                }, {}, function (res, err) { next(err, res); });
            },
            function do_check_torque2 (err, res) {
                assert.ifError(err);
                assert.strictEqual(res.statusCode, 200, res.body);
                assert.strictEqual(res.headers['content-type'], 'application/json; charset=utf-8');
                var parsed = JSON.parse(res.body);
                assert.deepStrictEqual(parsed[0].vals__uint8, [1]);
                assert.deepStrictEqual(parsed[0].dates__uint16, [0]);
                assert.strictEqual(parsed[0].x__uint8, 128);
                assert.strictEqual(parsed[0].y__uint8, 128);
                return null;
            },
            function do_get_torque1 (err) {
                // Layer 1 is not a torque layer...
                // See https://github.com/CartoDB/Windshaft/issues/136
                assert.ifError(err);
                var next = this;
                assert.response(server, {
                    url: '/api/v1/map/' + expected_token + '/1/0/0/0.json.torque',
                    method: 'GET',
                    headers: { host: 'localhost' }
                }, {}, function (res, err) { next(err, res); });
            },
            function do_check_torque1 (err, res) {
                assert.ifError(err);
                assert.strictEqual(res.statusCode, 400, res.statusCode + ': ' + res.body);
                var parsed = JSON.parse(res.body);
                assert.ok(parsed.errors, res.body);
                assert.strictEqual(parsed.errors.length, 1);
                var msg = parsed.errors[0];
                assert.ok(msg.match(/Unsupported format json.torque/i), msg);
                return null;
            },
            function finish (err) {
                if (err) {
                    return done(err);
                }
                var keysToDelete = { 'user:localhost:mapviews:global': 5 };
                keysToDelete['map_cfg|' + expected_token] = 0;
                testHelper.deleteRedisKeys(keysToDelete, done);
            }
        );
    });

    it('check that distinct maps result in distinct tiles', function (done) {
        var layergroup1 = {
            version: '1.0.0',
            layers: [
                {
                    options: {
                        sql: 'select cartodb_id, ST_Translate(the_geom, 50, 0) as the_geom from test_table limit 2',
                        cartocss: '#layer { marker-fill:red; marker-width:32; marker-allow-overlap:true; }',
                        cartocss_version: '2.0.1',
                        interactivity: 'cartodb_id',
                        geom_column: 'the_geom'
                    }
                }
            ]
        };

        var layergroup2 = {
            version: '1.0.0',
            layers: [
                {
                    options: {
                        sql: 'select cartodb_id, ST_Translate(the_geom, -50, 0) as the_geom from test_table limit 2 offset 2',
                        cartocss: '#layer { marker-fill:blue; marker-allow-overlap:true; }',
                        cartocss_version: '2.0.2',
                        interactivity: 'cartodb_id',
                        geom_column: 'the_geom'
                    }
                }
            ]
        };

        var token1, token2;
        step(
            function do_post1 () {
                var next = this;
                assert.response(server, {
                    url: '/api/v1/map',
                    method: 'POST',
                    headers: { host: 'localhost', 'Content-Type': 'application/json' },
                    data: JSON.stringify(layergroup1)
                }, {}, function (res) {
                    assert.strictEqual(res.statusCode, 200, res.body);
                    var parsedBody = JSON.parse(res.body);
                    token1 = LayergroupToken.parse(parsedBody.layergroupid).token;
                    assert.ok(token1, res.body);
                    next(null);
                });
            },
            function do_post2 () {
                var next = this;
                assert.response(server, {
                    url: '/api/v1/map',
                    method: 'POST',
                    headers: { host: 'localhost', 'Content-Type': 'application/json' },
                    data: JSON.stringify(layergroup2)
                }, {}, function (res) {
                    assert.strictEqual(res.statusCode, 200, res.body);
                    var parsedBody = JSON.parse(res.body);
                    token2 = LayergroupToken.parse(parsedBody.layergroupid).token;
                    assert.ok(token2);
                    next(null);
                });
            },
            function do_get_tile1 (err) {
                assert.ifError(err);
                var next = this;
                assert.response(server, {
                    url: '/api/v1/map/' + token1 + '/0/0/0.png',
                    method: 'GET',
                    encoding: 'binary',
                    headers: { host: 'localhost' }
                }, {}, function (res) {
                    assert.strictEqual(res.statusCode, 200, res.body);
                    assert.strictEqual(res.headers['content-type'], 'image/png');
                    var referenceImagePath = './test/acceptance/ported/fixtures/test_table_0_0_0_multilayer2.png';
                    assert.imageBufferIsSimilarToFile(res.body, referenceImagePath,
                        IMAGE_EQUALS_TOLERANCE_PER_MIL, function (err) {
                            next(err);
                        });
                });
            },
            function do_get_grid1 (err) {
                assert.ifError(err);
                var next = this;
                assert.response(server, {
                    url: '/api/v1/map/' + token1 + '/0/0/0/0.grid.json?interactivity=cartodb_id',
                    method: 'GET',
                    headers: { host: 'localhost' }
                }, {}, function (res) {
                    assert.strictEqual(res.statusCode, 200, res.body);
                    assert.strictEqual(res.headers['content-type'], 'application/json; charset=utf-8');
                    assert.utfgridEqualsFile(
                        res.body, './test/acceptance/ported/fixtures/test_table_0_0_0_multilayer1.layer0.grid.json', 2,
                        function (err/*, similarity */) {
                            next(err);
                        });
                });
            },
            function do_get_tile2 (err) {
                assert.ifError(err);
                var next = this;
                assert.response(server, {
                    url: '/api/v1/map/' + token2 + '/0/0/0.png',
                    method: 'GET',
                    encoding: 'binary',
                    headers: { host: 'localhost' }
                }, {}, function (res) {
                    assert.strictEqual(res.statusCode, 200, res.body);
                    assert.strictEqual(res.headers['content-type'], 'image/png');
                    var referenceImagePath = './test/acceptance/ported/fixtures/test_table_0_0_0_multilayer3.png';
                    assert.imageBufferIsSimilarToFile(res.body, referenceImagePath,
                        IMAGE_EQUALS_TOLERANCE_PER_MIL, function (err) {
                            next(err);
                        });
                });
            },
            function do_get_grid_layer2 (err) {
                assert.ifError(err);
                var next = this;
                assert.response(server, {
                    url: '/api/v1/map/' + token2 + '/0/0/0/0.grid.json?interactivity=cartodb_id',
                    method: 'GET',
                    headers: { host: 'localhost' }
                }, {}, function (res) {
                    assert.strictEqual(res.statusCode, 200, res.body);
                    assert.strictEqual(res.headers['content-type'], 'application/json; charset=utf-8');
                    assert.utfgridEqualsFile(
                        res.body, './test/acceptance/ported/fixtures/test_table_0_0_0_multilayer1.layer1.grid.json', 2,
                        function (err/*, similarity */) {
                            next(err);
                        });
                });
            },
            function finish (err) {
                if (err) {
                    return done(err);
                }
                var keysToDelete = { 'user:localhost:mapviews:global': 5 };
                keysToDelete['map_cfg|' + token1] = 0;
                keysToDelete['map_cfg|' + token2] = 0;
                testHelper.deleteRedisKeys(keysToDelete, done);
            }
        );
    });

    it('layers are rendered in definition order', function (done) {
        var layergroup = {
            version: '1.0.1',
            layers: [
                {
                    options: {
                        sql: "select st_setsrid('LINESTRING(-60 -60,-60 60)'::geometry, 4326) as the_geom",
                        cartocss_version: '2.0.2',
                        cartocss: '#layer { line-width:16; line-color:#ff0000; }',
                        geom_column: 'the_geom'
                    }
                },
                {
                    options: {
                        sql: "select st_setsrid('LINESTRING(-100 0,100 0)'::geometry, 4326) as the_geom",
                        cartocss_version: '2.0.2',
                        cartocss: '#layer { line-width:16; line-color:#00ff00; }',
                        geom_column: 'the_geom'
                    }
                },
                {
                    options: {
                        sql: "select st_setsrid('LINESTRING(60 -60,60 60)'::geometry, 4326) as the_geom",
                        cartocss_version: '2.0.2',
                        cartocss: '#layer { line-width:16; line-color:#0000ff; }',
                        geom_column: 'the_geom'
                    }
                }
            ]
        };

        var expected_token; // = "32994445c0a4525432fcd7013bf6524c";
        step(
            function do_post () {
                var next = this;
                assert.response(server, {
                    url: '/api/v1/map',
                    method: 'POST',
                    headers: { host: 'localhost', 'Content-Type': 'application/json' },
                    data: JSON.stringify(layergroup)
                }, {}, function (res) {
                    try {
                        assert.strictEqual(res.statusCode, 200, res.body);
                        var parsedBody = JSON.parse(res.body);
                        if (expected_token) {
                            assert.deepStrictEqual(parsedBody, { layergroupid: expected_token, layercount: 3 });
                        } else {
                            expected_token = LayergroupToken.parse(parsedBody.layergroupid).token;
                        }
                        next(null, res);
                    } catch (err) { next(err); }
                });
            },
            function do_get_tile (err) {
                assert.ifError(err);
                var next = this;
                assert.response(server, {
                    url: '/api/v1/map/' + expected_token + '/0/0/0.png',
                    method: 'GET',
                    encoding: 'binary',
                    headers: { host: 'localhost' }
                }, {}, function (res) {
                    assert.strictEqual(res.statusCode, 200, res.body);
                    assert.strictEqual(res.headers['content-type'], 'image/png');
                    var referenceImagePath = './test/acceptance/ported/fixtures/test_table_0_0_0_multilayer4.png';
                    assert.imageBufferIsSimilarToFile(res.body, referenceImagePath,
                        IMAGE_EQUALS_TOLERANCE_PER_MIL, function (err) {
                            next(err);
                        });
                });
            },
            function finish (err) {
                if (err) {
                    return done(err);
                }
                var keysToDelete = { 'user:localhost:mapviews:global': 5 };
                keysToDelete['map_cfg|' + expected_token] = 0;
                testHelper.deleteRedisKeys(keysToDelete, done);
            }
        );
    });

    it('quotes in CartoCSS', function (done) {
        var layergroup = {
            version: '1.0.1',
            layers: [
                {
                    options: {
                        sql: "select 'single''quote' as n, 'SRID=4326;POINT(0 0)'::geometry as the_geom",
                        cartocss: '#s [n="single\'quote" ] { marker-fill:red; }',
                        cartocss_version: '2.1.0',
                        geom_column: 'the_geom'
                    }
                },
                {
                    options: {
                        sql: "select 'double\"quote' as n, 'SRID=4326;POINT(2 0)'::geometry as the_geom",
                        cartocss: '#s [n="double\\"quote" ] { marker-fill:red; }',
                        cartocss_version: '2.1.0',
                        geom_column: 'the_geom'
                    }
                }
            ]
        };

        assert.response(server, {
            url: '/api/v1/map',
            method: 'POST',
            headers: { host: 'localhost', 'Content-Type': 'application/json' },
            data: JSON.stringify(layergroup)
        }, {}, function (res) {
            assert.strictEqual(res.statusCode, 200, res.statusCode + ': ' + res.body);
            var parsed = JSON.parse(res.body);
            var expected_token = LayergroupToken.parse(parsed.layergroupid).token;
            var keysToDelete = { 'user:localhost:mapviews:global': 5 };
            keysToDelete['map_cfg|' + expected_token] = 0;
            testHelper.deleteRedisKeys(keysToDelete, done);
        });
    });

    // See https://github.com/CartoDB/Windshaft/issues/90
    it('exponential notation in CartoCSS filter', function (done) {
        var layergroup = {
            version: '1.0.1',
            layers: [
                {
                    options: {
                        sql: "select 1.0 as n, 'SRID=4326;POINT(0 0)'::geometry as the_geom",
                        cartocss: '#s [n=1e-4 ] { marker-fill:red; }',
                        cartocss_version: '2.1.0',
                        geom_column: 'the_geom'
                    }
                }
            ]
        };
        assert.response(server, {
            url: '/api/v1/map',
            method: 'POST',
            headers: { host: 'localhost', 'Content-Type': 'application/json' },
            data: JSON.stringify(layergroup)
        }, {}, function (res) {
            assert.strictEqual(res.statusCode, 200, res.statusCode + ': ' + res.body);
            var parsed = JSON.parse(res.body);
            var expected_token = LayergroupToken.parse(parsed.layergroupid).token;
            var keysToDelete = { 'user:localhost:mapviews:global': 5 };
            keysToDelete['map_cfg|' + expected_token] = 0;
            testHelper.deleteRedisKeys(keysToDelete, done);
        });
    });

    // See https://github.com/CartoDB/Windshaft/issues/94
    it('unknown text-face-name', function (done) {
        var layergroup = {
            version: '1.0.1',
            layers: [
                {
                    options: {
                        sql: "select 1.0 as n, 'SRID=4326;POINT(0 0)'::geometry as the_geom",
                        cartocss: '#s { text-name: [n]; text-face-name: "<%= font %>"; }',
                        cartocss_version: '2.1.0',
                        geom_column: 'the_geom'
                    }
                }
            ]
        };

        var tpl = JSON.stringify(layergroup);

        step(
            function doBadPost () {
                var next = this;
                assert.response(server, {
                    url: '/api/v1/map',
                    method: 'POST',
                    headers: { host: 'localhost', 'Content-Type': 'application/json' },
                    data: _.template(tpl, { font: 'bogus' })
                }, function (res) { next(null, res); });
            },
            function checkBadFont (err, res) {
                assert.ifError(err);
                assert.strictEqual(res.statusCode, 400, res.statusCode + ': ' + res.body);
                var parsedBody = JSON.parse(res.body);
                assert.strictEqual(parsedBody.errors.length, 1);
                var errmsg = parsedBody.errors[0];
                assert.ok(errmsg.match(/text-face-name.*bogus/), parsedBody.errors.toString());
                //, {"errors":["style0: Failed to find font face 'bogus'"]});
                return null;
            },
            function doGoodPost (err) {
                assert.ifError(err);
                var next = this;
                assert.response(server, {
                    url: '/api/v1/map',
                    method: 'POST',
                    headers: { host: 'localhost', 'Content-Type': 'application/json' },
                    data: _.template(tpl, { font: available_system_fonts[0] })
                }, function (res) { next(null, res); });
            },
            function checkGoodFont (err, res) {
                assert.ifError(err);
                assert.strictEqual(res.statusCode, 200, res.statusCode + ': ' + res.body);
                var parsed = JSON.parse(res.body);
                var expected_token = LayergroupToken.parse(parsed.layergroupid).token;
                var keysToDelete = { 'user:localhost:mapviews:global': 5 };
                keysToDelete['map_cfg|' + expected_token] = 0;
                testHelper.deleteRedisKeys(keysToDelete, done);
            }
        );
    });

    /// /////////////////////////////////////////////////////////////////
    //
    // OPTIONS LAYERGROUP
    //
    /// /////////////////////////////////////////////////////////////////

    it('geting options on layergroup should return CORS headers', function (done) {
        const allowHeaders = 'X-Requested-With, X-Prototype-Version, X-CSRF-Token, Authorization, Content-Type';
        assert.response(server, {
            url: '/api/v1/map',
            method: 'OPTIONS'
        }, {
            status: 200,
            // TODO: use checkCORSHeaders() function
            headers: {
                'Access-Control-Allow-Headers': allowHeaders,
                'Access-Control-Allow-Origin': '*'
            }
        }, function () { done(); });
    });

    // See:
    //  - https://github.com/CartoDB/Windshaft/issues/103
    //  - https://github.com/mapnik/mapnik/issues/2121
    //  - https://github.com/mapnik/mapnik/issues/764
    it.skip('layergroup with datetime interactivity', function (done) {
        var layergroup = {
            version: '1.0.1',
            layers: [
                {
                    options: {
                        sql: 'select 1 as i, 2::int2 as n, now() as t, ST_SetSRID(ST_MakePoint(0,0),3857) as the_geom',
                        cartocss: '#layer { marker-fill:red; }',
                        cartocss_version: '2.1.1',
                        interactivity: ['i', 't', 'n']
                    }
                }
            ]
        };

        var expected_token;
        step(
            function do_post () {
                var next = this;
                assert.response(server, {
                    url: '/api/v1/map',
                    method: 'POST',
                    headers: { host: 'localhost', 'Content-Type': 'application/json' },
                    data: JSON.stringify(layergroup)
                }, {}, function (res) {
                    try {
                        assert.strictEqual(res.statusCode, 200, res.body);
                        var parsedBody = JSON.parse(res.body);
                        if (expected_token) {
                            assert.deepStrictEqual(parsedBody, { layergroupid: expected_token, layercount: 3 });
                        } else {
                            expected_token = LayergroupToken.parse(parsedBody.layergroupid).token;
                        }
                        next(null, res);
                    } catch (err) { next(err); }
                });
            },
            function do_get_grid0 (err) {
                assert.ifError(err);
                var next = this;
                assert.response(server, {
                    url: '/api/v1/map/' + expected_token + '/0/0/0/0.grid.json',
                    method: 'GET',
                    headers: { host: 'localhost' }
                }, {}, function (res) {
                    next(null, res);
                });
            },
            function do_check_grid (err, res) {
                assert.ifError(err);
                var next = this;
                assert.strictEqual(res.statusCode, 200, res.body);
                assert.strictEqual(res.headers['content-type'], 'application/json; charset=utf-8');
                var grid = JSON.parse(res.body);
                assert.ok(grid);
                assert.ok(Object.prototype.hasOwnProperty.call(grid, 'data'));
                assert.ok(Object.prototype.hasOwnProperty.call(grid.data, '1'));
                var data = grid.data[1];
                assert.ok(Object.prototype.hasOwnProperty.call(data, 'n'), "Missing 'n' from grid data keys: " + _.keys(data));
                assert.ok(Object.prototype.hasOwnProperty.call(data, 'i'), "Missing 'i' from grid data keys: " + _.keys(data));
                assert.ok(Object.prototype.hasOwnProperty.call(data, 't'), "Missing 't' from grid data keys: " + _.keys(data));
                next();
            },
            function finish (err) {
                if (err) {
                    return done(err);
                }
                var keysToDelete = { 'user:localhost:mapviews:global': 5 };
                keysToDelete['map_cfg|' + expected_token] = 0;
                testHelper.deleteRedisKeys(keysToDelete, done);
            }
        );
    });

    // See https://github.com/CartoDB/Windshaft/issues/163
    it.skip('has different token for different database', function (done) {
        var layergroup = {
            version: '1.0.1',
            layers: [
                {
                    options: {
                        sql: 'select 1 as i, 2::int2 as n, now() as t, ST_SetSRID(ST_MakePoint(0,0),3857) as the_geom',
                        cartocss: '#layer { marker-fill:red; marker-width:32; marker-allow-overlap:true; }',
                        cartocss_version: '2.0.1',
                        geom_column: 'the_geom'
                    }
                }
            ]
        };

        var token1, token2;
        step(
            function do_post_1 () {
                var next = this;
                assert.response(server, {
                    url: '/api/v1/map',
                    method: 'POST',
                    headers: { host: 'localhost', 'Content-Type': 'application/json' },
                    data: JSON.stringify(layergroup)
                }, {}, function (res, err) { next(err, res); });
            },
            function check_post_1 (err, res) {
                assert.ifError(err);
                assert.strictEqual(res.statusCode, 200, res.statusCode + ': ' + res.body);
                var parsedBody = JSON.parse(res.body);
                token1 = LayergroupToken.parse(parsedBody.layergroupid).token;
                return null;
            },
            function do_post_2 () {
                var next = this;
                assert.response(server, {
                    url: '/database/windshaft_test2/layergroup',
                    method: 'POST',
                    headers: { host: 'cartodb250user', 'Content-Type': 'application/json' },
                    data: JSON.stringify(layergroup)
                }, {}, function (res, err) { next(err, res); });
            },
            function check_post_2 (err, res) {
                assert.ifError(err);
                assert.strictEqual(res.statusCode, 200, res.statusCode + ': ' + res.body);
                var parsedBody = JSON.parse(res.body);
                token2 = LayergroupToken.parse(parsedBody.layergroupid).token;
                assert.ok(token1 !== token2);
                return null;
            },
            function finish (err) {
                if (err) {
                    return done(err);
                }
                var keysToDelete = { 'user:localhost:mapviews:global': 5 };
                keysToDelete['map_cfg|' + token1] = 0;
                keysToDelete['map_cfg|' + token2] = 0;
                testHelper.deleteRedisKeys(keysToDelete, done);
            }
        );
    });

    // See http://github.com/CartoDB/Windshaft/issues/191
    it('mapnik layer with custom geom_column', function (done) {
        var layergroup = {
            version: '1.0.1',
            layers: [
                {
                    options: {
                        sql: 'select 1 as i, ST_SetSRID(ST_MakePoint(0,0),4326) as g',
                        cartocss: '#layer { marker-fill:red; marker-width:100; }',
                        cartocss_version: '2.0.1',
                        geom_column: 'g'
                    }
                }
            ]
        };

        var token1;
        step(
            function do_post_1 () {
                var next = this;
                assert.response(server, {
                    url: '/api/v1/map',
                    method: 'POST',
                    headers: { host: 'localhost', 'Content-Type': 'application/json' },
                    data: JSON.stringify(layergroup)
                }, {}, function (res, err) { next(err, res); });
            },
            function check_post_1 (err, res) {
                assert.ifError(err);
                assert.strictEqual(res.statusCode, 200, res.statusCode + ': ' + res.body);
                var parsedBody = JSON.parse(res.body);
                token1 = LayergroupToken.parse(parsedBody.layergroupid).token;
                return null;
            },
            function do_get_tile (err) {
                assert.ifError(err);
                var next = this;
                assert.response(server, {
                    url: '/api/v1/map/' + token1 + '/0/0/0.png',
                    method: 'GET',
                    encoding: 'binary',
                    headers: { host: 'localhost' }
                }, {}, function (res) {
                    assert.strictEqual(res.statusCode, 200, res.body);
                    assert.strictEqual(res.headers['content-type'], 'image/png');
                    checkCORSHeaders(res);
                    assert.imageBufferIsSimilarToFile(res.body, './test/fixtures/test_bigpoint_red.png',
                        IMAGE_EQUALS_TOLERANCE_PER_MIL, function (err) {
                            next(err);
                        });
                });
            },
            function finish (err) {
                if (err) {
                    return done(err);
                }
                var keysToDelete = { 'user:localhost:mapviews:global': 5 };
                keysToDelete['map_cfg|' + token1] = 0;
                testHelper.deleteRedisKeys(keysToDelete, done);
            }
        );
    });
});