import {AfterViewInit, Component, OnInit, ViewChild} from '@angular/core'
import {
  AbstractControl,
  FormBuilder,
  FormControl,
  FormGroup,
  Validators
} from '@angular/forms'
import {AlternativeValidationDirective} from 'angular-alternative-validation'
import {IAlternativeValidationConfig} from 'angular-alternative-validation/struct/alternative-validation-config'


@Component({
  selector: 'my-app',
  template: `
<h1>Basic Usage</h1>

<div class="row">
  <div class="col-sm-12">

    <form [formGroup]="basicFormGroup" class="card">
      <div class="card-header">
        The singer survey
      </div>
      <div class="card-block">
        <div
          class="form-group {{altInput.touched?'has-'+getControlFeedbackName(altInput, aV):''}}">

          <label class="form-control-label">Female Singer
            <small>(shows a demo uscase for validating and hinting form inputs)</small>
          </label>

          <input type="text" autocomplete="false"
            class="form-control {{altInput.touched?'form-control-'+getControlFeedbackName(altInput, aV):''}}"
            name="alt"
            formControlName="alt"
            [alternativeValidation]="avNameConfig"
            #aV="alternativeValidation">

          <small *ngIf="altInput.hasError('required') && altInput.touched"
            class="form-control-feedback">
            Input required
          </small>
          <small *ngIf="altInput.hasError('minlength') && altInput.touched"
            class="form-control-feedback">
            A minimum length of 3 is required
          </small>

          <small
            *ngIf="!altInput.errors && aV.hasError('validName') && aV.touched"
            class="form-control-feedback">
            This is maybe not a name of a female singer. Try names like:
            {{aV.getError('validName').validNames}}
          </small>

          <small *ngIf="altInput.valid && aV.valid && aV.touched"
            class="form-control-feedback">
            Good choice! :-)
          </small>

          <small *ngIf="aV.untouched" class="form-text text-muted">
            Please enter a female singer that pops up first in your mind.
          </small>

        </div>
      </div>
      <div class="card-footer">
        <button class="btn btn-primary" [disabled]="basicFormGroup.invalid"
          type="submit">Save
        </button>
        <button class="btn btn-secondary" type="reset">Reset <small>native</small></button>
        <button class="btn btn-secondary" type="button"
          (click)="resetWithValue('Nei')">Reset <small>via code</small>
        </button>

        <button class="btn btn-secondary" type="button" (click)="toggleDisabled(altInput)">{{altInput.disabled?'Enabled':'Disable'}}</button>

        <input type="text" autocomplete="false"
          class="form-control pull-right col-4"
          name="any-other-focus"
          placeholder="Any Other Focus">
      </div>
    </form>
    <br>
    <div class="row">

      <div class="col-6">

        <control-state [control]="altInput">
          Angular control states
        </control-state>

      </div>

      <div class="col-6">

        <control-state [control]="aV" [errorColor]="'warning'">
          Alternative control states
        </control-state>

      </div>
    
    </div>
  </div>
</div>

  `
})export class AppComponent implements OnInit, AfterViewInit {


  basicFormGroup: FormGroup;
  nativeInput: FormControl;
  basicInput: FormControl;
  cfnInput: FormControl;
  altInput: FormControl;
  avNameConfig: IAlternativeValidationConfig;

  @ViewChild(AlternativeValidationDirective)
  ref

  constructor(private fb: FormBuilder) {
    this.basicFormGroup = this.fb.group(
      {
        alt: ['initial', [Validators.required, Validators.minLength(3)]]
      }
    );

    this.avNameConfig = {
      validator: [
        {name: 'validName'}
      ]
    };
  }

  ngOnInit() {
    this.altInput = this.basicFormGroup.get('alt') as FormControl
  }

  ngAfterViewInit() {
    console.log('Reference to the directive', this.ref);
  }

  getControlFeedbackName(formControl: AbstractControl, altControl: AbstractControl): string {
    if (formControl.disabled) {
      return '';
    }
    if (formControl.invalid) {
      return 'danger';
    } else if (altControl.invalid) {
      return 'warning';
    } else {
      return 'success';
    }
  }

  toggleDisabled(control: AbstractControl) {
    if (!control.disabled) {
      control.disable();
    } else {
      control.enable();
    }
  }

  resetWithValue(value) {
    this.basicFormGroup.reset({
      alt: 'reset'
    })
  }

}
import { NgModule }      from '@angular/core';
import { BrowserModule } from '@angular/platform-browser';
import { FormsModule,NG_VALIDATORS }   from '@angular/forms';


import { AppComponent }  from './app.component';
import { ControlStateComponent }  from './control-state/control-state.component';

import { AlternativeValidationModule } from 'angular-alternative-validation';
import {validName} from './validators/valid-name'


@NgModule({
  imports: [
    BrowserModule,
    AlternativeValidationModule.forRoot(),
  ],
  declarations: [
    AppComponent,
    ControlStateComponent
  ],
  providers: [
    {provide: NG_VALIDATORS, useValue: validName, multi: true}
  ],
  bootstrap: [ AppComponent ]
})
export class AppModule { }


/*
Copyright 2017 Google Inc. All Rights Reserved.
Use of this source code is governed by an MIT-style license that
can be found in the LICENSE file at http://angular.io/license
*/
import { platformBrowserDynamic } from '@angular/platform-browser-dynamic';
import { AppModule } from './app/app.module';

platformBrowserDynamic().bootstrapModule(AppModule);


/*
Copyright 2017 Google Inc. All Rights Reserved.
Use of this source code is governed by an MIT-style license that
can be found in the LICENSE file at http://angular.io/license
*/
/* Master Styles */
h1 {
  color: #369;
  font-family: Arial, Helvetica, sans-serif;
  font-size: 250%;
}
h2, h3 {
  color: #444;
  font-family: Arial, Helvetica, sans-serif;
  font-weight: lighter;
}
body {
  margin: 2em;
}
body, input[text], button {
  color: #888;
  font-family: Cambria, Georgia;
}
a {
  cursor: pointer;
  cursor: hand;
}
button {
  font-family: Arial;
  background-color: #eee;
  border: none;
  padding: 5px 10px;
  border-radius: 4px;
  cursor: pointer;
  cursor: hand;
}
button:hover {
  background-color: #cfd8dc;
}
button:disabled {
  background-color: #eee;
  color: #aaa;
  cursor: auto;
}

/* Navigation link styles */
nav a {
  padding: 5px 10px;
  text-decoration: none;
  margin-right: 10px;
  margin-top: 10px;
  display: inline-block;
  background-color: #eee;
  border-radius: 4px;
}
nav a:visited, a:link {
  color: #607D8B;
}
nav a:hover {
  color: #039be5;
  background-color: #CFD8DC;
}
nav a.active {
  color: #039be5;
}

/* everywhere else */
* {
  font-family: Arial, Helvetica, sans-serif;
}


/*
Copyright 2017 Google Inc. All Rights Reserved.
Use of this source code is governed by an MIT-style license that
can be found in the LICENSE file at http://angular.io/license
*/
<!DOCTYPE html>
<html>
  <head>
    <title>Angular Tour of Heroes</title>
    <script>document.write('<base href="' + document.location + '" />');</script>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-alpha.6/css/bootstrap.min.css" integrity="sha384-rwoIResjU2yc3z8GV/NPeZWAv56rSmLldC3R/AZzGRnGxQQKnKkoFVhFQhNUwEyJ" crossorigin="anonymous">
    <link rel="stylesheet" href="styles.css">
    

    <!-- Polyfills -->
    <script src="https://unpkg.com/core-js/client/shim.min.js"></script>

    <script src="https://unpkg.com/zone.js@0.7.4?main=browser"></script>
    <script src="https://unpkg.com/systemjs@0.19.39/dist/system.src.js"></script>

    <script src="systemjs.config.js"></script>
    <script>
      System.import('main.js').catch(function(err){ console.error(err); });
    </script>
  </head>

  <body>
    <my-app>Loading...</my-app>
  </body>
</html>


<!-- 
Copyright 2017 Google Inc. All Rights Reserved.
Use of this source code is governed by an MIT-style license that
can be found in the LICENSE file at http://angular.io/license
-->
/**
 * WEB ANGULAR VERSION
 * (based on systemjs.config.js in angular.io)
 * System configuration for Angular samples
 * Adjust as necessary for your application needs.
 */
(function (global) {
  System.config({
    // DEMO ONLY! REAL CODE SHOULD NOT TRANSPILE IN THE BROWSER
    transpiler: 'ts',
    typescriptOptions: {
      // Copy of compiler options in standard tsconfig.json
      "target": "es5",
      "module": "commonjs",
      "moduleResolution": "node",
      "sourceMap": true,
      "emitDecoratorMetadata": true,
      "experimentalDecorators": true,
      "lib": ["es2015", "dom"],
      "noImplicitAny": true,
      "suppressImplicitAnyIndexErrors": true
    },
    meta: {
      'typescript': {
        "exports": "ts"
      }
    },
    paths: {
      // paths serve as alias
      'npm:': 'https://unpkg.com/'
    },
    // map tells the System loader where to look for things
    map: {
      // our app is within the app folder
      'app': 'app',

      // angular bundles
      '@angular/animations': 'npm:@angular/animations/bundles/animations.umd.js',
      '@angular/animations/browser': 'npm:@angular/animations/bundles/animations-browser.umd.js',
      '@angular/core': 'npm:@angular/core/bundles/core.umd.js',
      '@angular/common': 'npm:@angular/common/bundles/common.umd.js',
      '@angular/compiler': 'npm:@angular/compiler/bundles/compiler.umd.js',
      '@angular/platform-browser': 'npm:@angular/platform-browser/bundles/platform-browser.umd.js',
      '@angular/platform-browser/animations': 'npm:@angular/platform-browser/bundles/platform-browser-animations.umd.js',
      '@angular/platform-browser-dynamic': 'npm:@angular/platform-browser-dynamic/bundles/platform-browser-dynamic.umd.js',
      '@angular/http': 'npm:@angular/http/bundles/http.umd.js',
      '@angular/router': 'npm:@angular/router/bundles/router.umd.js',
      '@angular/router/upgrade': 'npm:@angular/router/bundles/router-upgrade.umd.js',
      '@angular/forms': 'npm:@angular/forms/bundles/forms.umd.js',
      '@angular/upgrade': 'npm:@angular/upgrade/bundles/upgrade.umd.js',
      '@angular/upgrade/static': 'npm:@angular/upgrade/bundles/upgrade-static.umd.js',

      // other libraries
      'rxjs':                      'npm:rxjs@5.0.1',
      'angular-in-memory-web-api': 'npm:angular-in-memory-web-api/bundles/in-memory-web-api.umd.js',
      'ts':                        'npm:plugin-typescript@5.2.7/lib/plugin.js',
      'typescript':                'npm:typescript@2.3.2/lib/typescript.js',
      'angular-alternative-validation':   'npm:angular-alternative-validation'

    },
    // packages tells the System loader how to load when no filename and/or no extension
    packages: {
      app: {
        main: './main.ts',
        defaultExtension: 'ts',
        meta: {
          './*.ts': {
            loader: 'systemjs-angular-loader.js'
          }
        }
      },
      rxjs: {
        defaultExtension: 'js'
      }
    }
  });

})(this);

/*
Copyright 2016 Google Inc. All Rights Reserved.
Use of this source code is governed by an MIT-style license that
can be found in the LICENSE file at http://angular.io/license
*/
var templateUrlRegex = /templateUrl\s*:(\s*['"`](.*?)['"`]\s*)/gm;
var stylesRegex = /styleUrls *:(\s*\[[^\]]*?\])/g;
var stringRegex = /(['`"])((?:[^\\]\\\1|.)*?)\1/g;

module.exports.translate = function(load){
  if (load.source.indexOf('moduleId') != -1) return load;

  var url = document.createElement('a');
  url.href = load.address;

  var basePathParts = url.pathname.split('/');

  basePathParts.pop();
  var basePath = basePathParts.join('/');

  var baseHref = document.createElement('a');
  baseHref.href = this.baseURL;
  baseHref = baseHref.pathname;

  if (!baseHref.startsWith('/base/')) { // it is not karma
    basePath = basePath.replace(baseHref, '');
  }

  load.source = load.source
    .replace(templateUrlRegex, function(match, quote, url){
      var resolvedUrl = url;

      if (url.startsWith('.')) {
        resolvedUrl = basePath + url.substr(1);
      }

      return 'templateUrl: "' + resolvedUrl + '"';
    })
    .replace(stylesRegex, function(match, relativeUrls) {
      var urls = [];

      while ((match = stringRegex.exec(relativeUrls)) !== null) {
        if (match[2].startsWith('.')) {
          urls.push('"' + basePath + match[2].substr(1) + '"');
        } else {
          urls.push('"' + match[2] + '"');
        }
      }

      return "styleUrls: [" + urls.join(', ') + "]";
    });

  return load;
};
import {Component, Input, OnChanges, OnInit, SimpleChanges} from '@angular/core'
import {FormControl} from '@angular/forms'


@Component({
  selector: 'control-state',
  styles: [`
    ul {
      list-style: none;
      margin-bottom:0;
    }
  `],
  template: `<div class="card">
  <div class="card-header">
    <h4>
      <ng-content></ng-content>
    </h4>
  </div>

  <ul *ngIf="control.errors"
      class="card-block {{'bg-'+ errorColor}}">
    <li *ngFor="let error of getErrors()" class="text-white">
      <b>{{error.name}}</b>
    </li>
  </ul>

  <div class="card-block">
    <div class="row">
      <div class="col-3"><b>value</b></div>
      <div
        class="col-9 text-primary">
        <b>{{control.value}}</b>
      </div>

      <div class="col-3"><b>valid</b></div>
      <div
        class="col-3 {{control.valid?'text-success':'text-danger'}}">
        {{control.valid }}
      </div>

      <div class="col-3"><b>invalid</b></div>
      <div
        class="col-3 {{control.invalid?'text-success':'text-danger'}}">
        {{control.invalid }}
      </div>

      <div class="col-3"><b>status</b></div>
      <div class="col-3" [ngClass]="{
                'text-success': control.status==='VALID',
                'text-danger': control.status==='INVALID',
                'text-info': control.status==='PENDING'
                }">{{control.status}}
      </div>

      <div class="col-3"><b>pending</b></div>
      <div
        class="col-3 {{control.pending?'text-success':'text-danger'}}">
        {{control.pending}}
      </div>

      <div class="col-3"><b>pristine</b></div>
      <div
        class="col-3 {{control.pristine?'text-success':'text-danger'}}">
        {{control.pristine}}
      </div>
      <div class="col-3"><b>dirty</b></div>
      <div
        class="col-3 {{control.dirty?'text-success':'text-danger'}}">
        {{control.dirty}}
      </div>

      <div class="col-3"><b>touched</b></div>
      <div
        class="col-3 {{control.touched?'text-success':'text-danger'}}">
        {{control.touched}}
      </div>

      <div class="col-3"><b>untouched</b></div>
      <div
        class="col-3 {{control.untouched?'text-success':'text-danger'}}">
        {{control.untouched}}
      </div>

      <div class="col-3"><b>focus</b></div>
      <div
        class="col-3 {{control.focus?'text-success':'text-danger'}}">
        {{control.focus}}
      </div>

      <div class="col-3"><b>disabled</b></div>
      <div
        class="col-3 {{control.disabled?'text-success':'text-danger'}}">
        {{control.disabled}}
      </div>

      <div class="col-12"><b>errors</b></div>
      <div
        class="col-12 text-danger">
        <pre>{{control.errors | json}}</pre>
      </div>

    </div>

  </div>
</div>


  `
})
export class ControlStateComponent implements OnChanges, OnInit {

  @Input()
  control: FormControl;

  @Input()
  errorColor = 'danger';

  ngOnChanges(changes: SimpleChanges): void {

    console.log(changes);

    if ('errorColor' in changes) {
      this.errorColor = changes.errorColor.currentValue || 'danger'
    }
  }

  ngOnInit() {

  }

  getErrors(): any[] {
    return Object.keys(this.control.errors)
      .map((key) => {
        return {
          name: key,
          value: this.control.errors[key]
        }
      })
  }

}
import {AbstractControl, ValidationErrors} from '@angular/forms'

export function validName(c: AbstractControl): ValidationErrors | null {
  const validNames = ['Aretha', 'Ella', 'Etta', 'Nina'];

  const isValid = validNames
    .map(n => c.value && c.value.indexOf(n) !== -1)
    .filter(v => v)
    .reduce((prev, curr) => true, false);

  if (!isValid) {
    return {
      validName: {
        valid: true,
        validNames
      }
    }
  }

  return null
}