import {Component, OnDestroy, OnInit, ViewChild} from '@angular/core';
import {ActivatedRoute, Router} from '@angular/router';
import {Title} from '@angular/platform-browser';
import {EnvProperties} from '../openaireLibrary/utils/properties/env-properties';
import {Category, Stakeholder, SubCategory, Topic} from "../utils/entities/stakeholder";
import {SideBarService} from "../library/sharedComponents/sidebar/sideBar.service";
import {StakeholderService} from "../services/stakeholder.service";
import {HelperFunctions} from "../openaireLibrary/utils/HelperFunctions.class";
import {AlertModal} from "../openaireLibrary/utils/modal/alert";

declare var UIkit;

@Component({
  selector: 'topic',
  templateUrl: './topic.component.html',
})
export class TopicComponent implements OnInit, OnDestroy {
  public properties: EnvProperties;
  public loading: boolean = true;
  public stakeholder: Stakeholder;
  public topicIndex: number = -1;
  public topic: Topic = null;
  public categoryIndex: number = -1;
  public selectedCategoryIndex: number = -1;
  public copyCategory: Category = null;
  public subCategoryIndex: number = -1;
  public copySubCategory: SubCategory = null;
  public valid = true;
  public edit: boolean = false;
  public toggle: boolean = false;

  public element: any;
  public index: number;

  @ViewChild('deleteTopicModal') deleteTopicModal: AlertModal;
  @ViewChild('deleteCategoryModal') deleteCategoryModal: AlertModal;
  @ViewChild('deleteSubcategoryModal') deleteSubcategoryModal: AlertModal;

  constructor(
    private route: ActivatedRoute,
    private router: Router,
    private title: Title,
    private sideBarService: SideBarService,
    private stakeholderService: StakeholderService) {
  }

  public ngOnInit() {
    this.route.data
      .subscribe((data: { envSpecific: EnvProperties }) => {
        this.properties = data.envSpecific;
        this.route.params.subscribe( params => {
          this.stakeholderService.getStakeholderAsObservable().subscribe(stakeholder => {
            if (stakeholder) {
              this.stakeholder = HelperFunctions.copy(stakeholder);
              this.topicIndex = this.stakeholder.topics.findIndex(topic => topic.alias === params['topic']);
              if(this.topicIndex === -1) {
                this.navigateToError();
              } else {
                this.title.setTitle(stakeholder.index_name);
                this.categoryIndex = 0;
                this.selectedCategoryIndex = 0;
                this.subCategoryIndex = 0;
                this.toggle = true;
              }
            }
          });
        });
      });
  }

  public ngOnDestroy() {
  }

  public hide(element) {
    this.edit = false;
    UIkit.drop(element).hide();
  }

  public show(element) {
    this.edit = true;
    UIkit.drop(element).show();
  }

  public toggleCategory(index: number) {
   if(this.selectedCategoryIndex !== index) {
      this.selectedCategoryIndex = index;
      this.toggle = true;
    } else {
      this.toggle = !this.toggle;
    }
  }

  public editCategoryOpen(index:number = -1, element = null) {
    if(index === -1) {
      this.copyCategory = new Category(null, null, null, true, true);
    } else {
      if(element.className.indexOf('uk-open') !== -1) {
        this.hide(element);
      } else {
        this.copyCategory = HelperFunctions.copy(this.stakeholder.topics[this.topicIndex].categories[index]);
        this.show(element);
        this.valid = true;
      }
    }
  }

  public saveCategory(element, index = -1) {
    if(this.copyCategory.name && this.copyCategory.name !== '') {
      if(!this.copyCategory.alias) {
        this.copyCategory.alias = this.copyCategory.name.toLowerCase();
      }
      if(index === -1) {
        this.stakeholder.topics[this.topicIndex].categories.push(this.copyCategory);
        this.save('Category has been successfully created', element);
      } else {
        this.stakeholder.topics[this.topicIndex].categories[index] = HelperFunctions.copy(this.copyCategory);
        this.save('Category has been successfully saved', element);
      }
    } else {
      this.valid = false;
    }
  }

  public deleteCategoryOpen(element, index) {
    this.deleteOpen('category', this.deleteCategoryModal, element, index);
  }

  public deleteCategory() {
    this.stakeholder.topics[this.topicIndex].categories.splice(this.index, 1);
    this.stakeholderService.saveStakeholder(this.properties.monitorServiceAPIURL, this.stakeholder).subscribe(stakeholder => {
      this.stakeholderService.setStakeholder(stakeholder);
      UIkit.notification('Category has been successfully deleted', {
        status: 'success',
        timeout: 3000,
        pos: 'top-left'
      });
      this.hide(this.element);
    }, error => {
      UIkit.notification(error.error.message, {
        status: 'danger',
        timeout: 3000,
        pos: 'top-left'
      });
      this.hide(this.element);
    });
  }

  public editSubCategoryOpen(index:number = -1, element = null) {
    if(index === -1) {
      this.copySubCategory = new SubCategory(null, null, null, true, true);
    } else {
      if(element.className.indexOf('uk-open') !== -1) {
        this.hide(element);
      } else {
        this.copySubCategory = HelperFunctions.copy(this.stakeholder.topics[this.topicIndex].
          categories[this.categoryIndex].subCategories[index]);
        this.show(element);
        this.valid = true;
      }
    }
  }

  public saveSubCategory(element, index = -1) {
    if(this.copySubCategory.name && this.copySubCategory.name !== '') {
      if(!this.copySubCategory.alias) {
        this.copySubCategory.alias = this.copySubCategory.name.toLowerCase();
      }
      if(index === -1) {
        this.stakeholder.topics[this.topicIndex].categories[this.selectedCategoryIndex].
        subCategories.push(this.copySubCategory);
        this.save('Subcategory has been successfully created', element);
      } else {
        this.stakeholder.topics[this.topicIndex].categories[this.selectedCategoryIndex].
          subCategories[index] = HelperFunctions.copy(this.copySubCategory);
        this.save('Subcategory has been successfully saved', element);
      }
      this.hide(element);
    } else {
      this.valid = false;
    }
  }

  public deleteSubcategoryOpen(element, index) {
    this.deleteOpen('subcategory', this.deleteSubcategoryModal, element, index);
  }

  public deleteSubcategory() {
    this.stakeholder.topics[this.topicIndex].categories[this.selectedCategoryIndex].subCategories.
    splice(this.index, 1);
    this.stakeholderService.saveStakeholder(this.properties.monitorServiceAPIURL, this.stakeholder).subscribe(stakeholder => {
      this.stakeholderService.setStakeholder(stakeholder);
      UIkit.notification('Subcategory has been successfully deleted', {
        status: 'success',
        timeout: 3000,
        pos: 'top-left'
      });
      this.hide(this.element);
    }, error => {
      UIkit.notification(error.error.message, {
        status: 'danger',
        timeout: 3000,
        pos: 'top-left'
      });
      this.hide(this.element);
    });
  }

  public editTopicOpen(element) {
    if(element.className.indexOf('uk-open') !== -1) {
      this.hide(element);
    } else {
      this.topic = HelperFunctions.copy(this.stakeholder.topics[this.topicIndex]);
      this.valid = true;
      this.show(element);
    }
  }

  public saveTopic(element) {
    if(this.topic.name && this.topic.name !== ''
      && this.topic.description && this.topic.description !== '') {
      if(!this.topic.alias) {
        this.topic.alias = this.topic.name.toLowerCase().trim();
      }
      this.stakeholder.topics[this.topicIndex] = HelperFunctions.copy(this.topic);
      this.save('Topic has been successfully saved', element, true);
    } else {
      this.valid = false;
    }
  }

  public deleteTopicOpen(element) {
    this.deleteOpen('topic', this.deleteTopicModal, element, this.topicIndex);
  }

  public deleteTopic() {
    this.stakeholder.topics.splice(this.index, 1);
    this.stakeholderService.saveStakeholder(this.properties.monitorServiceAPIURL, this.stakeholder).subscribe(stakeholder => {
      this.stakeholderService.setStakeholder(stakeholder);
      UIkit.notification('Topic has been successfully deleted', {
        status: 'success',
        timeout: 3000,
        pos: 'top-left'
      });
      this.hide(this.element);
      this.back();
    }, error => {
      UIkit.notification(error.error.message, {
        status: 'danger',
        timeout: 3000,
        pos: 'top-left'
      });
      this.hide(this.element);
    });
  }

  private navigateToError() {
    this.router.navigate(['/error'], {queryParams: {'page': this.router.url}});
  }

  private deleteOpen(type: string, modal: AlertModal, element, index) {
    this.element = element;
    this.index = index;
    modal.alertHeader = true;
    modal.alertMessage = true;
    modal.cancelButton = true;
    modal.cancelButtonText = 'No';
    modal.okButtonText = 'Yes';
    modal.message = 'This ' + type + ' will permanently be deleted. Are you sure you want to proceed?';
    modal.open();
  }

  private save(message: string, element, redirect = false) {
    this.stakeholderService.saveStakeholder(this.properties.monitorServiceAPIURL, this.stakeholder).subscribe(stakeholder => {
      this.stakeholderService.setStakeholder(stakeholder);
      UIkit.notification(message, {
        status: 'success',
        timeout: 3000,
        pos: 'top-left'
      });
      if(redirect) {
        this.router.navigate(['../' + this.topic.alias], {
          relativeTo: this.route
        });
      }
      this.hide(element);
    }, error => {
      UIkit.notification(error.error.message, {
        status: 'danger',
        timeout: 3000,
        pos: 'top-left'
      });
      this.hide(element);
    });
  }

  back() {
    this.router.navigate(['../'], {
      relativeTo: this.route
    });
  }

  chooseSubcategory(categoryIndex: number, subcategoryIndex: number) {
    this.categoryIndex = categoryIndex;
    this.subCategoryIndex = subcategoryIndex;
  }
}