var assert = require('../../support/assert');
var step = require('step');
var LayergroupToken = require('../../../lib/cartodb/models/layergroup_token');
var testHelper = require('../../support/test_helper');
var CartodbWindshaft = require('../../../lib/cartodb/server');
var serverOptions = require('../../../lib/cartodb/server_options');
var server = new CartodbWindshaft(serverOptions);
var mapnik = require('windshaft').mapnik;
var IMAGE_TOLERANCE_PER_MIL = 10;

describe('turbo-carto for named maps', function() {

    var keysToDelete;

    beforeEach(function() {
        keysToDelete = {};
    });

    afterEach(function(done) {
        testHelper.deleteRedisKeys(keysToDelete, done);
    });

    var templateId = 'turbo-carto-template-1';

    var template = {
        version: '0.0.1',
        name: templateId,
        auth: { method: 'open' },
        placeholders: {
            color: {
                type: "css_color",
                default: "Reds"
            }
        },
        layergroup:  {
            version: '1.0.0',
                layers: [{
                    options: {
                        sql: [
                            'SELECT test_table.*, _prices.price FROM test_table JOIN (' +
                            '  SELECT 1 AS cartodb_id, 10.00 AS price',
                            '  UNION',
                            '  SELECT 2, 10.50',
                            '  UNION',
                            '  SELECT 3, 11.00',
                            '  UNION',
                            '  SELECT 4, 12.00',
                            '  UNION',
                            '  SELECT 5, 21.00',
                            ') _prices ON _prices.cartodb_id = test_table.cartodb_id'
                        ].join('\n'),
                        cartocss: [
                            '#layer {',
                            '  marker-fill: ramp([price], colorbrewer(<%= color %>));',
                            '  marker-allow-overlap:true;',
                            '}'
                        ].join('\n'),
                        cartocss_version: '2.0.2'
                    }
                }
            ]
        }
    };

    var templateParamsReds = { color: 'Reds' };
    var templateParamsBlues = { color: 'Blues' };

    it('should create a template with turbo-carto parsed properly', function (done) {
        step(
            function postTemplate() {
                var next = this;

                assert.response(server, {
                    url: '/api/v1/map/named?api_key=1234',
                    method: 'POST',
                    headers: { host: 'localhost', 'Content-Type': 'application/json' },
                    data: JSON.stringify(template)
                }, {},
                function (res, err) {
                    next(err, res);
                });
            },
            function checkTemplate(err, res) {
                assert.ifError(err);
                assert.equal(res.statusCode, 200);
                assert.deepEqual(JSON.parse(res.body), {
                    template_id: templateId
                });

                return null;
            },
            function instantiateTemplateWithReds(err) {
                assert.ifError(err);

                var next = this;
                assert.response(server, {
                    url: '/api/v1/map/named/' + templateId,
                    method: 'POST',
                    headers: {
                        host: 'localhost',
                        'Content-Type': 'application/json'
                    },
                    data: JSON.stringify(templateParamsReds)
                }, {},
                function(res, err) {
                    return next(err, res);
                });
            },
            function checkInstanciationWithReds(err, res) {
                assert.ifError(err);

                assert.equal(res.statusCode, 200);

                var parsedBody = JSON.parse(res.body);

                keysToDelete['map_cfg|' + LayergroupToken.parse(parsedBody.layergroupid).token] = 0;
                keysToDelete['user:localhost:mapviews:global'] = 5;

                assert.ok(parsedBody.layergroupid);
                assert.ok(parsedBody.last_updated);

                return parsedBody.layergroupid;
            },
            function requestTileReds(err, layergroupId) {
                assert.ifError(err);

                var next = this;

                assert.response(server, {
                    url: '/api/v1/map/' + layergroupId + '/0/0/0.png',
                    method: 'GET',
                    headers: { host: 'localhost' },
                    encoding: 'binary'
                }, {},
                function(res, err) {
                    next(err, res);
                });
            },
            function checkTileReds(err, res) {
                assert.ifError(err);

                var next = this;

                assert.equal(res.statusCode, 200);
                assert.equal(res.headers['content-type'], 'image/png');

                var fixturePath = './test/fixtures/turbo-carto-named-maps-reds.png';
                var image = mapnik.Image.fromBytes(new Buffer(res.body, 'binary'));

                assert.imageIsSimilarToFile(image, fixturePath, IMAGE_TOLERANCE_PER_MIL, next);
            },
            function instantiateTemplateWithBlues(err) {
                assert.ifError(err);

                var next = this;
                assert.response(server, {
                    url: '/api/v1/map/named/' + templateId,
                    method: 'POST',
                    headers: {
                        host: 'localhost',
                        'Content-Type': 'application/json'
                    },
                    data: JSON.stringify(templateParamsBlues)
                }, {},
                function(res, err) {
                    return next(err, res);
                });
            },
            function checkInstanciationWithBlues(err, res) {
                assert.ifError(err);
                assert.equal(res.statusCode, 200);

                var parsedBody = JSON.parse(res.body);

                keysToDelete['map_cfg|' + LayergroupToken.parse(parsedBody.layergroupid).token] = 0;
                keysToDelete['user:localhost:mapviews:global'] = 5;

                assert.ok(parsedBody.layergroupid);
                assert.ok(parsedBody.last_updated);

                return parsedBody.layergroupid;
            },
            function requestTileBlues(err, layergroupId) {
                assert.ifError(err);

                var next = this;

                assert.response(server, {
                    url: '/api/v1/map/' + layergroupId + '/0/0/0.png',
                    method: 'GET',
                    headers: { host: 'localhost' },
                    encoding: 'binary'
                }, {},
                function(res, err) {
                    next(err, res);
                });
            },
            function checkTileBlues(err, res) {
                assert.ifError(err);

                var next = this;

                assert.equal(res.statusCode, 200);
                assert.equal(res.headers['content-type'], 'image/png');

                var fixturePath = './test/fixtures/turbo-carto-named-maps-blues.png';
                var image = mapnik.Image.fromBytes(new Buffer(res.body, 'binary'));

                assert.imageIsSimilarToFile(image, fixturePath, IMAGE_TOLERANCE_PER_MIL, next);
            },
            function deleteTemplate(err) {
                assert.ifError(err);

                var next = this;

                assert.response(server, {
                    url: '/api/v1/map/named/' + templateId + '?api_key=1234',
                    method: 'DELETE',
                    headers: { host: 'localhost' }
                }, {}, function (res, err) {
                    next(err, res);
                });
            },
            function checkDeleteTemplate(err, res) {
                assert.ifError(err);
                assert.equal(res.statusCode, 204);
                assert.ok(!res.body);

                return null;
            },
            function finish(err) {
                done(err);
            }
        );
    });
});