import {Component, EventEmitter, Input, OnInit, Output} from '@angular/core';
import {UploadAnalysisModel} from '../../models/upload.analysis.model';
import {PayInModel} from '../../models/pay-in.model';
import {CellCloseEvent} from '@progress/kendo-angular-grid';
import {PayInConnectiveModel} from '../../models/pay-in-connective.model';
import {DataResult, GroupDescriptor, process} from '@progress/kendo-data-query';

@Component({
  selector: 'app-lender-connective-income',
  templateUrl: './lender-connective-income.component.html',
  styleUrls: ['./lender-connective-income.component.scss']
})
export class LenderConnectiveIncomeComponent implements OnInit {

  private Lender = 'Connective';
  @Input() public analysis = new UploadAnalysisModel({});
  @Input() newPayInUpdate: PayInModel;
  @Output() Selected: EventEmitter<PayInModel> = new EventEmitter<PayInModel>();
  public data: PayInConnectiveModel[] = [];
  private payInCandidates: PayInModel[] = [];

  public groups: GroupDescriptor[] = [{ field: 'Lender' }];
  public gridView: DataResult;
  constructor() { }

  ngOnInit(): void {
    this.analysis.Connective.forEach(v => {
      v.matchedPayIn = this.matchPayIn(v);
      this.data.push(new PayInConnectiveModel(v));
    });
    this.gridView = process(this.data, { group: this.groups });
  }

  ngOnChanges(changes): void { // Todo: build super class for common features
    if (changes.newPayInUpdate){
      const piNew = changes.newPayInUpdate.currentValue as PayInModel;
      this.data.forEach(v => {
        // remove old matches
        if (v.matchedPayIn !== -1 && v.matchedPayIn.Id === piNew.Id){
          v.matchedPayIn = -1;
        }

        // add new matches
        if ( this.isMatch(v, changes.newPayInUpdate.currentValue) ){
          v.matchedPayIn = changes.newPayInUpdate.currentValue;
        }
      });
    }
  }

  public onCellClick(event: CellCloseEvent): void{
    this.Selected.emit(event.dataItem.asPayIn());
  }

  private matchPayIn(v: PayInConnectiveModel): PayInModel | -1 {
    const idx = this.payInCandidates.findIndex( pi => this.isMatch(v, pi) );
    if ( idx === -1 ) { return -1; }
    return this.payInCandidates[idx];
  }

  private isMatch( v: PayInConnectiveModel, pi: PayInModel): boolean {
    if ( v === null || pi === null ){
      return false;
    }
    return  v.isMatch(pi);
  }


  @Input() set payIn(pis: PayInModel[]) {
    this.payInCandidates = [];
    pis.forEach( v => this.payInCandidates.push(new PayInModel(v)));

    this.data.forEach( v => {
      v.matchedPayIn = this.matchPayIn(v);
    });

  }

  get PayIn(): PayInModel[] {
    return this.payInCandidates;
  }
}