var test_helper = require('../support/test_helper');

var assert = require('../support/assert');
var CartodbWindshaft = require(__dirname + '/../../lib/cartodb/server');
var serverOptions = require(__dirname + '/../../lib/cartodb/server_options');

var LayergroupToken = require('../../lib/cartodb/models/layergroup-token');

var RedisPool = require('redis-mpool');

var step = require('step');

var windshaft = require('windshaft');

describe('overviews metadata for named maps', function() {
    var server;

    before(function () {
        server = new CartodbWindshaft(serverOptions);
    });

    // configure redis pool instance to use in tests
    var redisPool = new RedisPool(global.environment.redis);

    var overviews_layer = {
        type: 'cartodb',
        options: {
            sql: 'SELECT * FROM test_table_overviews',
            cartocss: '#layer { marker-fill: black; }',
            cartocss_version: '2.3.0'
        }
    };

    var non_overviews_layer = {
        type: 'cartodb',
        options: {
            sql: 'SELECT * FROM test_table',
            cartocss: '#layer { marker-fill: black; }',
            cartocss_version: '2.3.0'
        }
    };

    var keysToDelete;

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

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

    var templateId = 'overviews-template-1';

    var template = {
        version: '0.0.1',
        name: templateId,
        auth: { method: 'open' },
        layergroup:  {
            version: '1.0.0',
            layers: [overviews_layer, non_overviews_layer]
        }
    };

    it("should add overviews data to layers", 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);

                var next = this;
                assert.equal(res.statusCode, 200);
                assert.deepEqual(JSON.parse(res.body), {
                    template_id: templateId
                });
                next(null);
            },
            function instantiateTemplate(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'
                    }
                }, {},
                function(res, err) {
                    return next(err, res);
                });

            },
            function checkInstanciation(err, res) {
                assert.ifError(err);

                var next = this;

                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);

                next(null, parsedBody.layergroupid);
            },

            function checkMapconfig(err, layergroupId)
            {
                assert.ifError(err);

                var next = this;

                var mapStore  = new windshaft.storage.MapStore({
                    pool: redisPool,
                    expire_time: 500000
                });
                mapStore.load(LayergroupToken.parse(layergroupId).token, function(err, mapConfig) {
                    assert.ifError(err);
                    assert.deepEqual(non_overviews_layer, mapConfig._cfg.layers[1]);
                    assert.equal(mapConfig._cfg.layers[0].type, 'cartodb');
                    assert.ok(mapConfig._cfg.layers[0].options.query_rewrite_data);
                    var expected_data = {
                        overviews: {
                            test_table_overviews: {
                                  schema: 'public',
                                  1: { table: '_vovw_1_test_table_overviews' },
                                  2: { table: '_vovw_2_test_table_overviews' }
                              }
                          }
                      };
                    assert.deepEqual(mapConfig._cfg.layers[0].options.query_rewrite_data, expected_data);
                });

                next(err);
            },
            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);
            }
        );
    });
});