import {ChangeDetectorRef, Component, HostListener, OnDestroy, OnInit} from '@angular/core';
import {ActivatedRoute, Data, NavigationEnd, Params, Router} from '@angular/router';
import {EnvProperties} from './openaireLibrary/utils/properties/env-properties';
import {Role, Session, User} from './openaireLibrary/login/utils/helper.class';
import {UserManagementService} from "./openaireLibrary/services/user-management.service";
import {StakeholderService} from "./openaireLibrary/monitor/services/stakeholder.service";
import {BehaviorSubject, Subscriber} from "rxjs";
import {LayoutService} from "./openaireLibrary/dashboard/sharedComponents/sidebar/layout.service";
import {MenuItem} from "./openaireLibrary/sharedComponents/menu";
import {
  Category,
  Stakeholder,
  StakeholderEntities,
  Topic,
  Visibility
} from "./openaireLibrary/monitor/entities/stakeholder";
import {LinksResolver} from "./search/links-resolver";
import {Header} from "./openaireLibrary/sharedComponents/navigationBar.component";
import {properties} from "../environments/environment";
import {ConfigurationService} from "./openaireLibrary/utils/configuration/configuration.service";
import {Option} from "./openaireLibrary/sharedComponents/input/input.component";
import {StakeholderUtils} from "./utils/indicator-utils";
import {SmoothScroll} from "./openaireLibrary/utils/smooth-scroll";
import {ConnectHelper} from "./openaireLibrary/connect/connectHelper";
import {ResourcesService} from "./openaireLibrary/monitor/services/resources.service";
import {StringUtils} from "./openaireLibrary/utils/string-utils.class";


@Component({
  selector: 'app-root',
  templateUrl: './app.component.html'
})
export class AppComponent implements OnInit, OnDestroy {
  properties: EnvProperties = properties;
  user: User;
  params: BehaviorSubject<Params> = new BehaviorSubject<Params>(null);
  data: BehaviorSubject<Data> = new BehaviorSubject<Data>(null);
  hasSidebar: boolean = false;
  hasHeader: boolean = false;
  hasAdminMenu: boolean = false;
  hasInternalSidebar: boolean = false;
  isFrontPage: boolean = false;
  isViewPublic: boolean = false;
  sideBarItems: MenuItem[] = [];
  specialSideBarMenuItem: MenuItem = null;
  menuItems: MenuItem[] = [];
  notificationGroups: Option[] = [];
  entities: string[];
  notificationGroupsInitialized: boolean = false;
  stakeholderUtils: StakeholderUtils = new StakeholderUtils();
  public stakeholderEntities = StakeholderEntities;
  menuHeader: Header = {
    route: "/",
    url: null,
    title: "Default menu header",
    logoUrl: null,
    logoSmallUrl: null,
    position: 'center',
    badge: true,
    menuPosition: "center"
  };
  
  userMenuItems: MenuItem[] = [];
  adminMenuItems: MenuItem[] = [];
  stakeholder: Stakeholder = null;
  activeTopic: Topic = null;
  activeCategory: Category = null;
  loading: boolean = true;
  paramsResolved: boolean = false;
  innerWidth;
  private subscriptions: any[] = [];
  
  constructor(private route: ActivatedRoute,
              private router: Router,
              private userManagementService: UserManagementService,
              private layoutService: LayoutService,
              private smoothScroll: SmoothScroll,
              private stakeholderService: StakeholderService,
              private cdr: ChangeDetectorRef,
              private configurationService: ConfigurationService,
              private resourcesService: ResourcesService) {
    this.subscriptions.push(this.router.events.subscribe(event => {
      if (event instanceof NavigationEnd) {
        let r = this.route;
        while (r.firstChild) {
          r = r.firstChild;
        }
        this.paramsResolved = true;
        this.params.next(r.snapshot.params);
        this.data.next(r.snapshot.data);
      }
    }));
  }
  
  @HostListener('window:resize', ['$event'])
  onResize(event) {
    if (this.layoutService.isSmallScreen && event.target.innerWidth > 640) {
      this.layoutService.setSmallScreen(false);
    } else if (!this.layoutService.isSmallScreen && event.target.innerWidth <= 640) {
      this.layoutService.setSmallScreen(true);
      this.layoutService.setOpen(false);
    }
  }
  
  ngOnInit() {
    if (typeof document !== 'undefined' && window) {
      this.innerWidth = window.innerWidth;
    }
    this.subscriptions.push(this.layoutService.hasSidebar.subscribe(hasSidebar => {
      this.hasSidebar = hasSidebar;
      this.cdr.detectChanges();
    }));
    this.subscriptions.push(this.layoutService.hasHeader.subscribe(hasHeader => {
      this.hasHeader = hasHeader;
      this.cdr.detectChanges();
    }));
    this.subscriptions.push(this.layoutService.hasAdminMenu.subscribe(hasAdminMenu => {
      this.hasAdminMenu = hasAdminMenu;
      this.cdr.detectChanges();
    }));
    this.subscriptions.push(this.layoutService.hasInternalSidebar.subscribe(hasInternalSidebar => {
      this.hasInternalSidebar = hasInternalSidebar;
      this.cdr.detectChanges();
    }));
    this.subscriptions.push(this.layoutService.isFrontPage.subscribe(isFrontPage => {
      this.isFrontPage = isFrontPage;
      this.cdr.detectChanges();
    }));
    this.route.queryParams.subscribe(params => {
      this.isViewPublic = (params['view'] == 'public');
    });
    this.layoutService.setSmallScreen((this.innerWidth && this.innerWidth <= 640));
    this.layoutService.setOpen(!(this.innerWidth && this.innerWidth <= 640));
    this.subscriptions.push(this.params.subscribe(params => {
      if (this.paramsResolved) {
        this.loading = true;
        if (params && params['stakeholder']) {
          if (!this.stakeholder || this.stakeholder.alias !== params['stakeholder']) {
            this.subscriptions.push(this.stakeholderService.getStakeholder(params['stakeholder']).subscribe(stakeholder => {
              if (stakeholder) {
                this.stakeholder = stakeholder;
                LinksResolver.setProperties(this.stakeholder.alias);
                this.setProperties(this.stakeholder.alias, this.stakeholder.type);
                this.buildMenu();
                this.setActives(params);
                this.setSideBar();
                this.loading = false;
              } else {
                this.stakeholder = null;
                LinksResolver.resetProperties();
                this.navigateToError();
                this.buildMenu();
                this.loading = false;
              }
            }));
          } else {
            this.buildMenu();
            this.setActives(params);
            this.loading = false;
          }
        } else {
          LinksResolver.resetProperties();
          this.stakeholderService.setStakeholder(null);
          this.stakeholder = null;
          this.buildMenu();
          this.loading = false;
        }
      }
    }));
    this.subscriptions.push(this.data.subscribe(data => {
      if (data && data.portal) {
        this.setProperties(data.portal);
        this.configurationService.initCommunityInformation(this.properties, this.properties.adminToolsCommunity);
      }
    }));
    this.subscriptions.push(this.userManagementService.getUserInfo().subscribe(user => {
      if (user) {
        this.user = user;
        this.buildMenu();
        if (!this.notificationGroupsInitialized) {
          this.setNotificationGroups();
        }
      } else if(this.user) {
        this.user = user;
        this.buildMenu();
        this.notificationGroupsInitialized = false;
        this.notificationGroups = [];
      }
    }));
  }
  
  setActives(params: Params) {
    if (params && params['topic']) {
      this.activeTopic = this.stakeholder.topics.find(topic => topic.alias === decodeURIComponent(params['topic']) && this.isPublicOrIsMember(topic.visibility));
    } else {
      this.activeTopic = this.stakeholder.topics.find(topic => this.isPublicOrIsMember(topic.visibility));
    }
    if(this.activeTopic) {
      if (params && params['category']) {
        this.activeCategory = this.activeTopic.categories.find(category => category.alias === decodeURIComponent(params['category']) && this.isPublicOrIsMember(category.visibility));
      } else {
        this.activeCategory = this.activeTopic.categories.find(category => this.isPublicOrIsMember(category.visibility));
      }
    }
  }
  
  public setNotificationGroups() {
    this.entities = this.stakeholderUtils.types.map(option => option.value);
    this.notificationGroups = [];
    if (Session.isPortalAdministrator(this.user)) {
      this.notificationGroups.push({value: Role.PORTAL_ADMIN, label: 'Portal Administrators'});
    }
    for (let type of this.stakeholderUtils.types) {
      if (Session.isCurator(type.value, this.user) || Session.isPortalAdministrator(this.user)) {
        this.notificationGroups.push({value: Role.curator(type.value), label: type.label + ' Curators'});
        this.notificationGroups.push({value: Role.typeManager(type.value), label: type.label + ' Managers'});
        this.notificationGroups.push({value: Role.typeMember(type.value), label: type.label + ' Members'});
      }
    }
    this.subscriptions.push(this.stakeholderService.getMyStakeholders(this.properties.monitorServiceAPIURL).subscribe(stakeholders => {
      stakeholders.forEach(stakeholder => {
        this.notificationGroups.push({
          value: Role.manager(stakeholder.type, stakeholder.alias),
          label: stakeholder.name + ' Managers'
        });
        this.notificationGroups.push({
          value: Role.member(stakeholder.type, stakeholder.alias),
          label: stakeholder.name + ' Members'
        });
      });
      this.notificationGroupsInitialized = true;
    }));
  }
  
  public ngOnDestroy() {
    this.subscriptions.forEach(value => {
      if (value instanceof Subscriber) {
        value.unsubscribe();
      }
    });
    this.userManagementService.clearSubscriptions();
    this.layoutService.clearSubscriptions();
    this.stakeholderService.clearSubscriptions();
    this.configurationService.clearSubscriptions();
    this.smoothScroll.clearSubscriptions();
  }
  
  private navigateToError() {
    this.router.navigate([this.properties.errorLink], {queryParams: {'page': this.properties.baseLink + this.router.url}});
  }
  
  public get open() {
    return this.layoutService.open;
  }
  
  private setSideBar() {
    let items: MenuItem[] = [];
    if (this.isPublicOrIsMember(this.stakeholder.visibility)) {
      this.stakeholder.topics.forEach((topic: Topic) => {
        if (this.isPublicOrIsMember(topic.visibility)) {
          let topicItem: MenuItem = new MenuItem(topic.alias, topic.name, "", '/' + this.stakeholder.alias + '/' + topic.alias,
            null, [], [], {}, {svg: topic.icon}, null, null, (
              '/' + this.stakeholder.alias + '/' + topic.alias));
          topicItem.items = topic.categories.map(category => {
            return new MenuItem(category.alias, category.name, "", ('/' + this.stakeholder.alias + '/' + topic.alias + '/' + category.alias),
              null, [], [], {}, {svg: topic.icon}, null, null,
              ('/' + this.stakeholder.alias + '/' + topic.alias + '/' + category.alias));
          });
          items.push(topicItem);
        }
      });
      if (items.length === 0) {
        items.push(new MenuItem('noTopics', 'No topics available yet', "", "", false, [], [], {}));
      }
    }
    this.adminMenuItems = [];
    this.adminMenuItems.push(new MenuItem("general", "General", "", "/admin/" + this.stakeholder.alias, false, [], [], {}, {name: 'badge'}));
    this.adminMenuItems.push(new MenuItem("indicators", "Indicators", "", "/admin/" + this.stakeholder.alias + '/indicators', false, [], [], {}, {name: 'bar_chart'}));
    if (this.stakeholder.defaultId) {
      this.adminMenuItems.push(new MenuItem("users", "Users", "", "/admin/" + this.stakeholder.alias + "/users", false, [], [], {}, {name: 'group'}, null, null, "/admin/" + this.stakeholder.alias + "/users"));
      if (this.isCurator()) {
        this.adminMenuItems.push(new MenuItem("admin-tools", "Pages & Entities", "", "/admin/" + this.stakeholder.alias + "/admin-tools/pages", false, [], [], {}, {name: 'description'}, null, null, "/admin/" + this.stakeholder.alias + "/admin-tools"));
      }
    }
    this.specialSideBarMenuItem = new MenuItem("back", "Manage profiles", "", "/admin", false, [], null, {}, {name: 'search', class: 'uk-text-secondary'});
    this.sideBarItems = items;
    this.hasSidebar = this.hasSidebar && this.sideBarItems.length > 0;
  }
  
  buildMenu() {
    this.menuItems = [];
    this.userMenuItems = [];
    if (this.user) {
      if (this.isKindOfMonitorManager()) {
        this.userMenuItems.push(new MenuItem("", "Manage profiles",
          "", "/admin", false, [], [], {}));
      }
      if (Session.isPortalAdministrator(this.user)) {
        this.userMenuItems.push(new MenuItem("adminOptions", "Super Admin options", "", "/admin/admin-tools/portals", false, [], [], {}));
      }
      if (this.isCurator()) {
        this.userMenuItems.push(new MenuItem("monitorOptions", "Monitor options", "", "/admin/monitor/admin-tools/pages", false, [], [], {}));
      }
    }
    if (this.stakeholder) {
      this.userMenuItems.push(new MenuItem("", "User information", "", "/" + this.stakeholder.alias + "/user-info", false, [], [], {}));
      this.menuItems.push(
        new MenuItem("dashboard", "Dashboard",
          "", "/" + this.stakeholder.alias, false, [], null, {}
          , null, null, null, null)
      );
      if (this.isPublicOrIsMember(this.stakeholder.visibility)) {
        this.menuItems.push(
          new MenuItem("search", "Browse Data", "", this.properties.searchLinkToResults,
            false, [], null, {resultbestaccessright: '"' + encodeURIComponent("Open Access") + '"'},
            null, null, null, null)
        );
        this.resourcesService.setResources(this.menuItems, "/" + this.stakeholder.alias);
        if (this.stakeholder.type === "funder") {
          this.menuItems.push(
            new MenuItem("develop", "Develop",
              "", "/" + this.stakeholder.alias + "/develop", false, [], null, {})
          );
        }
      }
      if (this.isManager(this.stakeholder)) {
        this.menuItems.push(
          new MenuItem("manage", "Manage",
            "", "/admin/" + this.stakeholder.alias, false, [], null, {}
            , null, null, null, null)
        );
      }
      if (!this.hasAdminMenu && this.isFrontPage) {
        this.menuHeader = {
          route: null,
          url: "https://" + (this.properties.environment == 'beta' ? 'beta.' : '') + 'monitor.openaire.eu',
          title: "Monitor",
          logoUrl: 'assets/common-assets/logo-services/monitor/small-inverted.svg',
          logoSmallUrl: "assets/common-assets/logo-services/monitor/small.svg",
          position: 'center',
          badge: true,
          darkBg: true,
          menuPosition: "center",
          replaceHeader: {
            route: './' + this.stakeholder.alias,
            url: null,
            title: this.stakeholder.name,
            logoUrl: StringUtils.getLogoUrl(this.stakeholder),
            logoSmallUrl: StringUtils.getLogoUrl(this.stakeholder),
            logoInfo: '<div class="uk-margin-left uk-width-medium"><div class="uk-margin-remove uk-text-background uk-text-bold uk-text-small">Monitor</div>' +
              '<div class="uk-h6 uk-text-truncate uk-margin-remove">Dashboard</div></div>',
            position: 'center',
            badge: true,
            menuPosition: "center"
          }
        };
      } else {
        this.menuHeader = {
          route: null,
          url: "https://" + (this.properties.environment == 'beta' ? 'beta.' : '') + 'monitor.openaire.eu',
          title: "Monitor",
          logoUrl: 'assets/common-assets/logo-services/monitor/small.svg',
          logoSmallUrl: "assets/common-assets/logo-services/monitor/small.svg",
          position: 'center',
          badge: true,
          menuPosition: "center",
          replaceHeader: {
            route: './' + this.stakeholder.alias,
            url: null,
            title: this.stakeholder.name,
            logoUrl: StringUtils.getLogoUrl(this.stakeholder),
            logoSmallUrl: StringUtils.getLogoUrl(this.stakeholder),
            position: 'center',
            badge: true,
            menuPosition: "center"
          }
        };
      }
    } else {
      this.userMenuItems.push(new MenuItem("", "User information", "https://" + (this.properties.environment == 'beta' ? 'beta.' : '') + 'monitor.openaire.eu/user-info', '', false, [], [], {}, null, null, null, null, "_self"));
      this.menuHeader = {
        route: null,
        url: "https://" + (this.properties.environment == 'beta' ? 'beta.' : '') + 'monitor.openaire.eu',
        title: "Monitor",
        logoUrl: 'assets/common-assets/logo-services/monitor/main.svg',
        logoSmallUrl: "assets/common-assets/logo-services/monitor/small.svg",
        position: 'left',
        badge: true,
        menuPosition: "center"
      };
      this.menuItems.push(
        new MenuItem("stakeholders", "Browse " + this.stakeholderEntities.STAKEHOLDERS,
          "https://" + (this.properties.environment == 'beta' ? 'beta.' : '') + 'monitor.openaire.eu/browse', "", false, [], null, {}, null, null, null, null, "_self")
      );
      this.resourcesService.setResources(this.menuItems, '', "https://" + (this.properties.environment === 'beta' ? 'beta.' : '') + 'monitor.openaire.eu');
      this.menuItems.push(
        new MenuItem("about", "About",
          "https://" + (this.properties.environment == 'beta' ? 'beta.' : '') + 'monitor.openaire.eu/about/learn-how', "", false, [], null, {}, null, null, null, null, "_self")
      );
      if (this.hasAdminMenu) {
        this.adminMenuItems = [];
        this.specialSideBarMenuItem = null;
        this.adminMenuItems.push(new MenuItem("stakeholders", "Manage profiles", "", "/admin", false, [], [], {}, {name: 'settings'}));
        if (Session.isPortalAdministrator(this.user)) {
          this.adminMenuItems.push(new MenuItem("super_admin", "Super Admin options", "", "/admin/admin-tools/portals", false, [], [], {}, {name: 'settings'}, null, null, '/admin/admin-tools'));
        }
        if (Session.isPortalAdministrator(this.user) || Session.isMonitorCurator(this.user)) {
          this.adminMenuItems.push(new MenuItem("monitor", "Monitor options", "", "/admin/monitor/admin-tools/pages", false, [], [], {}, {name: 'settings'}, null, null, '/admin/monitor/admin-tools'));
        }
        this.hasAdminMenu = this.hasAdminMenu && this.adminMenuItems.length > 1;
      }
    }
  }
  
  public isCurator() {
    return this.user && (Session.isPortalAdministrator(this.user) || Session.isMonitorCurator(this.user));
  }
  
  public isKindOfMonitorManager() {
    return this.user && (Session.isPortalAdministrator(this.user) || Session.isMonitorCurator(this.user) || Session.isKindOfMonitorManager(this.user));
  }
  
  public isManager(stakeholder: Stakeholder) {
    return this.user && (Session.isPortalAdministrator(this.user) || Session.isCurator(stakeholder.type, this.user) || Session.isManager(stakeholder.type, stakeholder.alias, this.user));
  }
  
  public isPublicOrIsMember(visibility: Visibility): boolean {
    return !(visibility == "PRIVATE" || (this.isViewPublic && visibility != "PUBLIC"));
  }
  
  setProperties(id, type = null) {
    this.properties.adminToolsCommunity = id;
    if (type) {
      this.properties.adminToolsPortalType = type;
    } else {
      ConnectHelper.setPortalTypeFromPid(id);
    }
    this.configurationService.initCommunityInformation(this.properties, this.properties.adminToolsCommunity);
  }
}