import { Component, OnDestroy, OnInit } from '@angular/core';
import { FormBuilder, FormGroup, Validators } from '@angular/forms';
import { Subject } from 'rxjs';

@Component({
    selector   : 'forms',
    templateUrl: './forms.component.html',
    styleUrls  : ['./forms.component.scss']
})
export class FormsComponent implements OnInit, OnDestroy
{
    form: FormGroup;

    // Horizontal Stepper
    horizontalStepperStep1: FormGroup;
    horizontalStepperStep2: FormGroup;
    horizontalStepperStep3: FormGroup;

    // Vertical Stepper
    verticalStepperStep1: FormGroup;
    verticalStepperStep2: FormGroup;
    verticalStepperStep3: FormGroup;

    // Private
    private _unsubscribeAll: Subject<any>;

    /**
     * Constructor
     *
     * @param {FormBuilder} _formBuilder
     */
    constructor(
        private _formBuilder: FormBuilder
    )
    {
        // Set the private defaults
        this._unsubscribeAll = new Subject();
    }

    // -----------------------------------------------------------------------------------------------------
    // @ Lifecycle hooks
    // -----------------------------------------------------------------------------------------------------

    /**
     * On init
     */
    ngOnInit(): void
    {
        // Reactive Form
        this.form = this._formBuilder.group({
            company   : [
                {
                    value   : 'Google',
                    disabled: true
                }, Validators.required
            ],
            firstName : ['', Validators.required],
            lastName  : ['', Validators.required],
            address   : ['', Validators.required],
            address2  : ['', Validators.required],
            city      : ['', Validators.required],
            state     : ['', Validators.required],
            postalCode: ['', [Validators.required, Validators.maxLength(5)]],
            country   : ['', Validators.required]
        });

        // Horizontal Stepper form steps
        this.horizontalStepperStep1 = this._formBuilder.group({
            firstName: ['', Validators.required],
            lastName : ['', Validators.required]
        });

        this.horizontalStepperStep2 = this._formBuilder.group({
            address: ['', Validators.required]
        });

        this.horizontalStepperStep3 = this._formBuilder.group({
            city      : ['', Validators.required],
            state     : ['', Validators.required],
            postalCode: ['', [Validators.required, Validators.maxLength(5)]]
        });

        // Vertical Stepper form stepper
        this.verticalStepperStep1 = this._formBuilder.group({
            firstName: ['', Validators.required],
            lastName : ['', Validators.required]
        });

        this.verticalStepperStep2 = this._formBuilder.group({
            address: ['', Validators.required]
        });

        this.verticalStepperStep3 = this._formBuilder.group({
            city      : ['', Validators.required],
            state     : ['', Validators.required],
            postalCode: ['', [Validators.required, Validators.maxLength(5)]]
        });
    }

    /**
     * On destroy
     */
    ngOnDestroy(): void
    {
        // Unsubscribe from all subscriptions
        this._unsubscribeAll.next();
        this._unsubscribeAll.complete();
    }

    // -----------------------------------------------------------------------------------------------------
    // @ Public methods
    // -----------------------------------------------------------------------------------------------------

    /**
     * Finish the horizontal stepper
     */
    finishHorizontalStepper(): void
    {
        alert('You have finished the horizontal stepper!');
    }

    /**
     * Finish the vertical stepper
     */
    finishVerticalStepper(): void
    {
        alert('You have finished the vertical stepper!');
    }
}