Opetushallitus/eperusteet-opintopolku

/*
 * Copyright (c) 2013 The Finnish Board of Education - Opetushallitus
 *
 * This program is free software: Licensed under the EUPL, Version 1.1 or - as
 * soon as they will be approved by the European Commission - subsequent versions
 * of the EUPL (the "Licence");
 *
 * You may not use this work except in compliance with the Licence.
 * You may obtain a copy of the Licence at: http://ec.europa.eu/idabc/eupl
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * European Union Public Licence for more details.
 */

/* Sets sivunavi items active based on current state */
angular
    .module("eperusteet.esitys")
    .service("epLukioStateService", function($state, $stateParams, $location, epSivunaviUtils, $rootScope) {
        let state: any = {};
        let section = null;

        function processSection(navi, index, cb) {
            section = navi.sections[index];
            if (index === 1) {
                state.oppiaine = true;
            }
            section.$open = true;
            _.each(section.items, function(item, index) {
                (cb || angular.noop)(item, index);
                item.$hidden = item.depth > 0;
            });
        }

        this.setState = function(navi) {
            this.state = {};
            _.each(navi.sections, function(section) {
                section.$open = false;
                _.each(section.items, function(item) {
                    item.$selected = false;
                    item.$header = false;
                    if (item.depth > 0) {
                        item.$hidden = true;
                    }
                });
            });
            section = null;
            var selected = null;
            var items = null;

            function setParentOppiaineHeader() {
                if (selected && selected.$oppiaine._oppiaine) {
                    var found = _.find(items, function(item: any) {
                        return item.$oppiaine && "" + item.$oppiaine.id === "" + selected.$oppiaine._oppiaine;
                    });
                    if (found) {
                        found.$header = true;
                    }
                }
            }

            function setParentOppiaineHeaderForKurssi() {
                var found = null;
                if (selected && selected.$kurssi) {
                    found = _.find(items, function(item: any) {
                        return item.$kurssi && "" + item.$kurssi.id === "" + $location.hash();
                    });
                }
                if (found) {
                    found.$header = true;
                }
            }

            var states = {
                tekstikappale: {
                    index: 0,
                    callback: function(item: any) {
                        if (item.$osa && item.depth === 0 && !$location.hash()) {
                            item.$selected = "" + $stateParams.tekstikappaleId === "" + item.$osa.id;
                            item.$hidden = item.depth > 0;
                        }
                        if (item.$osa && $location.hash()) {
                            item.$selected = "" + $location.hash() === "" + item.$osa._perusteenOsa;
                            item.$hidden = item.depth > 0;
                        }
                        if (item.$selected) {
                            selected = item;
                        }
                    }
                },
                tiedot: {
                    index: 0,
                    callback: function(item) {
                        item.$selected =
                            _.isArray(item.link) &&
                            item.link.length > 0 &&
                            _.last(item.link[0].split(".")) === "tiedot";
                    }
                },
                oppiaine: {
                    index: 1,
                    callback: function(item) {
                        if (item.$oppiaine) {
                            item.$selected = "" + $stateParams.oppiaineId === "" + item.$oppiaine.id;
                        }
                        if (item.$selected) {
                            selected = item;
                        }
                    },
                    actions: function() {
                        items = section.items;
                        setParentOppiaineHeader();
                    }
                },
                kurssi: {
                    index: 1,
                    callback: function(item) {
                        if (item.$kurssi) {
                            item.$selected = "" + $stateParams.kurssiId === "" + item.$kurssi.id;
                        }
                        if (item.$selected) {
                            selected = item;
                        }
                    },
                    actions: function() {
                        items = section.items;
                        setParentOppiaineHeaderForKurssi();
                    }
                }
            };

            _.each(states, function(value: any, key) {
                if (_.endsWith($state.current.name, key)) {
                    processSection(navi, value.index, value.callback || angular.noop);
                    (value.actions || angular.noop)();
                }
            });

            if (selected && section) {
                var menuItems = items || section.items;
                var parent = selected.$parent;
                while (_.isNumber(parent)) {
                    menuItems[parent].$header = true;
                    parent = menuItems[parent].$parent;
                }
                epSivunaviUtils.unCollapse(menuItems, selected);
                epSivunaviUtils.traverse(menuItems, 0);
                $rootScope.$broadcast("lukio:stateSet");
            }
        };
        this.getState = function() {
            return state;
        };
    });