import { Component, Inject, OnInit, ViewChild } from '@angular/core';
import { Page, BrowseTerm, Datasource, KeyValue } from '../common/is.model';
import { ISService } from '../common/is.service';
import { ActivatedRoute, Params } from '@angular/router';
import { MatDialog, MAT_DIALOG_DATA, MatDialogRef } from '@angular/material/dialog';
import { MatTableDataSource } from '@angular/material/table';
import { MatSort } from '@angular/material/sort';
import { combineLatest } from 'rxjs';
import { Router } from '@angular/router';
import { PageEvent } from '@angular/material/paginator';

@Component({
  selector: 'app-dsm-search',
  templateUrl: './dsm-search.component.html',
  styleUrls: ['./dsm.component.css']
})
export class DsmSearchComponent implements OnInit {
  searchText:string = '';
  browsableFields:KeyValue[] = [];

  constructor(public service: ISService, public route: ActivatedRoute, public router: Router, public dialog: MatDialog) {
  }

  ngOnInit() {
    this.service.dsmBrowsableFields((data: KeyValue[]) => this.browsableFields = data);
  }

  search() {
    this.router.navigate(['/dsm/results/0/50'], {
      queryParams: { value: this.searchText }
    });
  }

  browseField(field:string, label:string) {
      const dialogRef = this.dialog.open(DsmBrowseDialog, {
        data: { field: field, label: label },
        width: '80%'
      });
  }

}

@Component({
  selector: 'app-dsm-results',
  templateUrl: './dsm-results.component.html',
  styleUrls: ['./dsm.component.css']
})
export class DsmResultsComponent implements OnInit {
  filterText:string = '';
  results:Datasource[] = [];
  nResults:number = 0;
  currPage:number = 0;
  nPages:number = 0;
  pageSize:number = 0;
  field?:string;
  value:string = '';
  
  constructor(public service: ISService, public route: ActivatedRoute, public router: Router, public dialog: MatDialog) {
  }

  ngOnInit(): void {
    combineLatest([ this.route.params, this.route.queryParams ],
      (params: Params, queryParams: Params) => ({ params, queryParams })
    ).subscribe((res: { params: Params; queryParams: Params }) => {
      const { params, queryParams} = res;
      this.currPage = parseInt(params['page']);
      this.pageSize = parseInt(params['size']);
      this.field = queryParams['field'];
      this.value = queryParams['value'];
  
      if (this.field) {
        this.service.dsmSearchByField(this.field, this.value, this.currPage, this.pageSize, (page:Page<Datasource>) => {
          this.results = page.content;
          this.nResults = page.totalElements;
          this.nPages = page.totalPages;
        });
      } else {
        this.service.dsmSearch(this.value, this.currPage, this.pageSize, (page:Page<Datasource>) => {
          this.results = page.content;
          this.nResults = page.totalElements;
          this.nPages = page.totalPages;
        });
      }
    });  
  }

  changePage(event: PageEvent) {
    let path = '/dsm/results/' + event.pageIndex + '/' + event.pageSize;
    let qp = this.field ?  
      { field: this.field, value: this.value } : 
      { value: this.value };
    
    this.router.navigate([path], {
      queryParams: qp
    });
  }
}

@Component({
  selector: 'app-dsm-api',
  templateUrl: './dsm-api.component.html',
  styleUrls: ['./dsm.component.css']
})
export class DsmApiComponent {

}

@Component({
  selector: 'app-dsm-add-api',
  templateUrl: './dsm-add-api.component.html',
  styleUrls: ['./dsm.component.css']
})
export class DsmAddApiComponent {

}




@Component({
  selector: 'dsm-browse-dialog',
  templateUrl: 'dsm-browse-dialog.html',
  styleUrls: ['./dsm.component.css']
})
export class DsmBrowseDialog implements OnInit{

  datasource: MatTableDataSource<BrowseTerm> = new MatTableDataSource<BrowseTerm>([]);
  colums: string[] = ['name', 'total'];
 
  @ViewChild(MatSort) sort: MatSort | undefined

  constructor(public dialogRef: MatDialogRef<DsmBrowseDialog>, @Inject(MAT_DIALOG_DATA) public data: any, public service: ISService) {
  } 

  ngOnInit(): void {
    this.service.dsmBrowse(this.data.field, (res:BrowseTerm[]) => this.datasource.data = res);
  }

  ngAfterViewInit() {
    if (this.sort) this.datasource.sort = this.sort;
  }

  applyFilter(event: Event) {
    const filterValue = (event.target as HTMLInputElement).value.trim().toLowerCase();
    this.datasource.filter = filterValue;
  }

  onNoClick(): void {
    this.dialogRef.close();
  }
}