import { Component, ViewChild, OnInit, AfterViewInit, ViewEncapsulation } from "@angular/core";
import { MatPaginator, MatSort, MatSnackBar } from "@angular/material";
import { Router, ActivatedRoute, Params } from "@angular/router";
import { TranslateService } from "@ngx-translate/core";
import { DataSource } from "@angular/cdk/table";
import { Observable } from "rxjs/Observable";
import { DataManagementPlanService } from "../../services/data-management-plan/data-management-plan.service";
import { ProjectModel, ProjectType } from "../../models/projects/ProjectModel";
import { ProjectService } from "../../services/project/project.service";
import { JsonSerializer } from "../../utilities/JsonSerializer";
import { FormGroup, AbstractControl, FormControl, FormArray } from "@angular/forms";
import { SnackBarNotificationComponent } from "../../shared/components/notificaiton/snack-bar-notification.component";
import { BaseErrorModel } from "../../models/error/BaseErrorModel";
import { TdDialogService } from "@covalent/core";
import { ProjectFileUploaderService } from "../../services/files/project-file-uploader.service";
import { HostConfiguration } from "../../app.constants";
import { LanguageResolverService } from "../../services/language-resolver/language-resolver.service";
import { THIS_EXPR } from "@angular/compiler/src/output/output_ast";
import { BaseHttpService } from "../../utilities/cite-http-service-module/base-http.service";
import { IBreadCrumbComponent } from "../../shared/components/breadcrumb/definition/IBreadCrumbComponent";
import { BreadcrumbItem } from "../../shared/components/breadcrumb/definition/breadcrumb-item";



@Component({
  selector: 'app-project-editor-component',
  templateUrl: 'project-editor.component.html',
  styleUrls: ['./project-editor.component.scss'],
  encapsulation: ViewEncapsulation.None
})
export class ProjectEditorComponent implements OnInit, IBreadCrumbComponent {

  breadCrumbs: Observable<BreadcrumbItem[]> = Observable.of([]);;
  isNew = true;
  project: ProjectModel;
  formGroup: FormGroup = null;
  host = HostConfiguration.Server;
  editMode = false;
  constructor(
    private projectService: ProjectService,
    private route: ActivatedRoute,
    public snackBar: MatSnackBar,
    public router: Router,
    public language: TranslateService,
    private dialogService: TdDialogService,
    private uploaderService: ProjectFileUploaderService,
    private languageResolverService: LanguageResolverService
  ) {

  }

  ngOnInit() {
    this.route.params.subscribe((params: Params) => {
      const itemId = params['id'];

      if (itemId != null) {
        this.isNew = false;
        this.projectService.getSingle(itemId).map(data => data as ProjectModel)
          .subscribe(data => {
            this.project = JsonSerializer.fromJSONObject(data, ProjectModel);
            this.formGroup = this.project.buildForm(null, this.project.type == ProjectType.External || !this.editMode);
            this.breadCrumbs = Observable.of([{ parentComponentName: "ProjectListingComponent", label: 'Projects', url: "/projects" }, { parentComponentName: null, label: this.project.label, url: "/projects/edit/" + this.project.id }])

          });
      } else {
        this.breadCrumbs = Observable.of([{ parentComponentName: "ProjectListingComponent", label: 'Projects', url: "/projects" }, { parentComponentName: null, label: "Project New", url: "/projects/new" }])
        this.project = new ProjectModel();
        setTimeout(() => {
          this.formGroup = this.project.buildForm();
        });
      }
    });
  }

  formSubmit(): void {
    this.touchAllFormFields(this.formGroup);
    if (!this.isFormValid()) { return; }
    this.onSubmit();
  }

  public isFormValid() {
    return this.formGroup.valid;
  }

  onSubmit(): void {
    this.projectService.createProject(this.formGroup.value).subscribe(
      complete => this.onCallbackSuccess(),
      error => this.onCallbackError(error)
    );
  }

  onCallbackSuccess(): void {
    this.snackBar.openFromComponent(SnackBarNotificationComponent, {
      data: { message: this.isNew ? 'GENERAL.SNACK-BAR.SUCCESSFUL-CREATION' : 'GENERAL.SNACK-BAR.SUCCESSFUL-UPDATE', language: this.language },
      duration: 3000,
    })
    this.router.navigate(['/projects']);
  }

  onCallbackError(errorResponse: any) {
    this.setErrorModel(errorResponse.error);
    this.validateAllFormFields(this.formGroup);
  }

  public setErrorModel(errorModel: BaseErrorModel) {
    Object.keys(errorModel).forEach(item => {
      (<any>this.project.errorModel)[item] = (<any>errorModel)[item];
    })
  }

  public cancel(): void {
    this.router.navigate(['/projects']);
  }

  public delete(): void {
    this.language.get('GENERAL.DELETE-CONFIRMATION').subscribe((messages: any) => {
      this.dialogService.openConfirm({
        message: messages.MESSAGE,
        title: messages.TITLE,
        cancelButton: messages.NEGATIVE,
        acceptButton: messages.POSITIVE
      }).afterClosed().subscribe((accept: boolean) => {
        if (accept) {
          this.projectService.inactivate(this.project.id).subscribe(
            complete => { this.router.navigate(['/projects']); },
            error => this.onCallbackError(error)
          );
        }
      });
    });
  }

  public touchAllFormFields(formControl: AbstractControl) {
    if (formControl instanceof FormControl) {
      formControl.markAsTouched();
    } else if (formControl instanceof FormGroup) {
      Object.keys(formControl.controls).forEach(item => {
        const control = formControl.get(item);
        this.touchAllFormFields(control);
      })
    }
    else if (formControl instanceof FormArray) {
      formControl.controls.forEach(item => {
        this.touchAllFormFields(item);
      })
    }
  }

  public validateAllFormFields(formControl: AbstractControl) {
    if (formControl instanceof FormControl) {
      formControl.updateValueAndValidity({ emitEvent: false })
    } else if (formControl instanceof FormGroup) {
      Object.keys(formControl.controls).forEach(item => {
        const control = formControl.get(item);
        this.validateAllFormFields(control);
      })
    }
    else if (formControl instanceof FormArray) {
      formControl.controls.forEach(item => {
        this.validateAllFormFields(item);
      })
    }
  }

  public enableForm() {
    if (!this.isExternalProject()) {
      this.editMode = true;
      this.formGroup.enable()
    }

  }

  public disableForm() {
    this.editMode = false;
    this.formGroup.disable();
  }

  public goToProjectDmps() {
    this.router.navigate(["dmps/project/" + this.project.id], { queryParams: { projectLabel: this.project.label } })
  }

  public isExternalProject() {
    return this.project.type === ProjectType.External;
  }
}