(function () {
    'use strict';

    var QueryViewCtrl = function ($scope, $window, $route, $http, $location, growl, notifications, Query, Visualization, DataSource) {
        var DEFAULT_TAB = 'table';
        var pristineHash = "";
        var leavingPageText = "You will lose your changes if you leave";
        var route = $route.current;

        $scope.dataSources = DataSource.get();

        $scope.dirty = undefined;
        $scope.isNewQuery = false;
        $scope.isOwner = false;
        $scope.canEdit = false;
        $scope.canFork = false;

        $scope.isSourceVisible = route.locals.viewSource;

        $scope.queryExecuting = false;

        $scope.newVisualization = undefined;

        updateSourceHref();

        $window.onbeforeunload = function () {
            if ($scope.canEdit && $scope.dirty) {
                return leavingPageText;
            }
        }

        function updateSourceHref() {
            if ($scope.query && $scope.query.id) {
                $scope.sourceHref = $scope.isSourceVisible ?
                    $location.url().replace('source', '') : getQuerySourceUrl($scope.query.id);
            }
        };

        function getQuerySourceUrl(queryId) {
            return '/queries/' + queryId + '/source#' + $location.hash();
        };

        Mousetrap.bindGlobal("meta+s", function (e) {
            e.preventDefault();

            if ($scope.canEdit) {
                $scope.saveQuery();
            }
        });

        $scope.$on('$locationChangeStart', function (event, next, current) {
            if (next.split("#")[0] == current.split("#")[0]) {
                return;
            }

            if (!$scope.canEdit) {
                return;
            }

            if ($scope.dirty && !confirm(leavingPageText + "\n\nAre you sure you want to leave this page?")) {
                event.preventDefault();
            } else {
                Mousetrap.unbind("meta+s");
            }
        });

        $scope.$watch(function () {
            return $location.hash()
        }, function (hash) {
            $scope.selectedTab = hash || DEFAULT_TAB;
            updateSourceHref();
        });

        $scope.lockButton = function (lock) {
            $scope.queryExecuting = lock;
        };

        $scope.formatQuery = function () {
            $scope.editorOptions.readOnly = 'nocursor';

            $http.post('/api/queries/format', {
                'query': $scope.query.query
            }).success(function (response) {
                $scope.query.query = response;
                $scope.editorOptions.readOnly = false;
            })
        }

        $scope.saveQuery = function (duplicate, oldId) {
            if (!oldId) {
                oldId = $scope.query.id;
            }

            delete $scope.query.latest_query_data;
            $scope.query.$save(function (q) {
                pristineHash = q.getHash();
                $scope.dirty = false;

                if (duplicate) {
                    growl.addSuccessMessage("Query forked");
                } else {
                    growl.addSuccessMessage("Query saved");
                }

                if (oldId != q.id) {
                    $location.url(getQuerySourceUrl(q.id)).replace();
                }
            }, function (httpResponse) {
                growl.addErrorMessage("Query could not be saved");
            });
        };

        $scope.duplicateQuery = function () {
            var oldId = $scope.query.id;
            $scope.query.id = null;
            $scope.query.ttl = -1;

            $scope.saveQuery(true, oldId);
        };

        // Query Editor:
        $scope.editorOptions = {
            mode: 'text/x-sql',
            lineWrapping: true,
            lineNumbers: true,
            readOnly: false,
            matchBrackets: true,
            autoCloseBrackets: true
        };

        $scope.refreshOptions = [
            {
                value: -1,
                name: 'No Refresh'
            },
            {
                value: 60,
                name: 'Every minute'
            },
        ]

        _.each(_.range(1, 13), function (i) {
            $scope.refreshOptions.push({
                value: i * 3600,
                name: 'Every ' + i + 'h'
            });
        })

        $scope.refreshOptions.push({
            value: 24 * 3600,
            name: 'Every 24h'
        });
        $scope.refreshOptions.push({
            value: 7 * 24 * 3600,
            name: 'Once a week'
        });

        $scope.$watch('queryResult && queryResult.getError()', function (newError, oldError) {
            if (newError == undefined) {
                return;
            }

            if (oldError == undefined && newError != undefined) {
                $scope.lockButton(false);
            }
        });

        $scope.$watch('queryResult && queryResult.getData()', function (data, oldData) {
            if (!data) {
                return;
            }

            $scope.filters = $scope.queryResult.getFilters();

            if ($scope.queryResult.getId() == null) {
                $scope.dataUri = "";
            } else {
                $scope.dataUri = '/api/queries/' + $scope.query.id + '/results/' + $scope.queryResult.getId() + '.csv';
                $scope.dataFilename = $scope.query.name.replace(" ", "_") + moment($scope.queryResult.getUpdatedAt()).format("_YYYY_MM_DD") + ".csv";
            }
        });

        $scope.$watch("queryResult && queryResult.getStatus()", function (status) {
            if (!status) {
                return;
            }

            if (status == "done") {
                if ($scope.query.id && $scope.query.latest_query_data_id != $scope.queryResult.getId() &&
                    $scope.query.query_hash == $scope.queryResult.query_result.query_hash) {
                    Query.save({
                        'id': $scope.query.id,
                        'latest_query_data_id': $scope.queryResult.getId()
                    })
                }
                $scope.query.latest_query_data_id = $scope.queryResult.getId();

                notifications.showNotification("re:dash", $scope.query.name + " updated.");

                $scope.lockButton(false);
            }
        });

        // view or source pages: controller is instantiated with a query
        if (route.locals.query) {
            $scope.query = route.locals.query;
            pristineHash = $scope.query.getHash();
            $scope.dirty = false;
            $scope.queryResult = $scope.query.getQueryResult();

            $scope.isOwner = currentUser.canEdit($scope.query);
            $scope.canEdit = $scope.isSourceVisible && $scope.isOwner;
            $scope.canFork = true;

        } else {
            // new query
            $scope.query = new Query({
                query: "",
                name: "New Query",
                ttl: -1,
                user: currentUser
            });
            $scope.lockButton(false);
            $scope.isOwner = $scope.canEdit = true;
            $scope.isNewQuery = true;
        }

        $scope.$watch('query.name', function () {
            $scope.$parent.pageTitle = $scope.query.name;
        });

        $scope.$watch(function () {
            return $scope.query.getHash();
        }, function (newHash) {
            $scope.dirty = (newHash !== pristineHash);
        });

        $scope.executeQuery = function () {
            $scope.queryResult = $scope.query.getQueryResult(0);
            $scope.lockButton(true);
            $scope.cancelling = false;
        };

        $scope.cancelExecution = function () {
            $scope.cancelling = true;
            $scope.queryResult.cancelExecution();
        };

        $scope.deleteVisualization = function ($e, vis) {
            $e.preventDefault();
            if (confirm('Are you sure you want to delete ' + vis.name + ' ?')) {
                Visualization.delete(vis);
                if ($scope.selectedTab == vis.id) {
                    $scope.selectedTab = DEFAULT_TAB;
                    $location.hash($scope.selectedTab);
                }
                $scope.query.visualizations =
                    $scope.query.visualizations.filter(function (v) {
                        return vis.id !== v.id;
                    });
            }
        };

        var unbind = $scope.$watch('selectedTab == "add"', function (newPanel) {
            if (newPanel && route.params.queryId == undefined) {
                unbind();
                $scope.saveQuery();
            }
        });
    };

    angular.module('redash.controllers').controller('QueryViewCtrl',
        [
            '$scope',
            '$window',
            '$route',
            '$http',
            '$location',
            'growl',
            'notifications',
            'Query',
            'Visualization',
            'DataSource',
            QueryViewCtrl
        ]);

})();