import {Component, Input, OnDestroy, OnInit} from "@angular/core";
import {AbstractControl} from "@angular/forms";
import {HelperFunctions} from "../../../utils/HelperFunctions.class";


export interface Option {
  icon?: string,
  iconClass?: string,
  value: any,
  label: string
}

@Component({
  selector: '[dashboard-input]',
  template: `
    <mat-form-field *ngIf="type != 'checkbox'"  class="uk-width-1-1 uk-padding-remove">
      <input *ngIf="type === 'text'" matInput [placeholder]="label"
             [formControl]="formControl" [required]="required">
      <textarea *ngIf="type === 'textarea'" [rows]="rows" matInput
                [placeholder]="label" [formControl]="formControl" [required]="required"></textarea>
      <mat-select *ngIf="type === 'select'" [placeholder]="label" [required]="required"
                  (openedChange)="stopPropagation()" [formControl]="formControl" [disableOptionCentering]="true">
        <mat-option *ngFor="let option of options" [value]="option.value">
          {{option.label}}
        </mat-option>
      </mat-select>
      
    </mat-form-field>
    <mat-checkbox *ngIf="type === 'checkbox'"  [formControl]="formControl" >{{label}}</mat-checkbox>
  `
})
export class InputComponent implements OnInit, OnDestroy {
  @Input('formInput') formControl: AbstractControl;
  @Input('type') type: 'text' | 'textarea' | 'select' | 'checkbox' = 'text';
  @Input('label') label: string;
  @Input('rows') rows: number = 3;
  @Input('options') options: Option[];
  public required: boolean = false;
  private initValue: any;

  constructor() {
  }

  ngOnInit(): void {
    this.initValue = HelperFunctions.copy(this.formControl.value);
    if(this.formControl && this.formControl.validator) {
      let validator = this.formControl.validator({} as AbstractControl);
      this.required = (validator && validator.required);
    }
    this.formControl.valueChanges.subscribe(value => {
      value = (value === '')?null:value;
      if(this.initValue === value) {
        this.formControl.markAsPristine();
      }
    });
  }

  ngOnDestroy(): void {
  }

  stopPropagation() {
    if(event) {
      event.stopPropagation();
    }
  }
}