client/src/app/videos/video-add/video-add.component.ts

   1 import { Component, ElementRef, OnInit } from '@angular/core';
   2 import { FormBuilder, FormGroup } from '@angular/forms';
   3 import { Router } from '@angular/router';
   4
   5 import { FileUploader } from 'ng2-file-upload/ng2-file-upload';
   6
   7 import { AuthService } from '../../core';
   8 import { FormReactive, VIDEO_NAME, VIDEO_DESCRIPTION, VIDEO_TAGS } from '../../shared';
   9
  10 @Component({
  11   selector: 'my-videos-add',
  12   styleUrls: [ './video-add.component.scss' ],
  13   templateUrl: './video-add.component.html'
  14 })
  15
  16 export class VideoAddComponent extends FormReactive implements OnInit {
  17   tags: string[] = [];
  18   uploader: FileUploader;
  19
  20   error: string = null;
  21   form: FormGroup;
  22   formErrors = {
  23     name: '',
  24     description: '',
  25     currentTag: ''
  26   };
  27   validationMessages = {
  28     name: VIDEO_NAME.MESSAGES,
  29     description: VIDEO_DESCRIPTION.MESSAGES,
  30     currentTag: VIDEO_TAGS.MESSAGES
  31   };
  32
  33   constructor(
  34     private authService: AuthService,
  35     private elementRef: ElementRef,
  36     private formBuilder: FormBuilder,
  37     private router: Router
  38   ) {
  39     super();
  40   }
  41
  42   get filename() {
  43     if (this.uploader.queue.length === 0) {
  44       return null;
  45     }
  46
  47     return this.uploader.queue[0].file.name;
  48   }
  49
  50   buildForm() {
  51     this.form = this.formBuilder.group({
  52       name: [ '', VIDEO_NAME.VALIDATORS ],
  53       description: [ '', VIDEO_DESCRIPTION.VALIDATORS ],
  54       currentTag: [ '', VIDEO_TAGS.VALIDATORS ]
  55     });
  56
  57     this.form.valueChanges.subscribe(data => this.onValueChanged(data));
  58   }
  59
  60   getInvalidFieldsTitle() {
  61     let title = '';
  62     const nameControl = this.form.controls['name'];
  63     const descriptionControl = this.form.controls['description'];
  64
  65     if (!nameControl.valid) {
  66       title += 'A name is required\n';
  67     }
  68
  69     if (this.tags.length === 0) {
  70       title += 'At least one tag is required\n';
  71     }
  72
  73     if (this.filename === null) {
  74       title += 'A file is required\n';
  75     }
  76
  77     if (!descriptionControl.valid) {
  78       title += 'A description is required\n';
  79     }
  80
  81     return title;
  82   }
  83
  84   ngOnInit() {
  85     this.uploader = new FileUploader({
  86       authToken: this.authService.getRequestHeaderValue(),
  87       queueLimit: 1,
  88       url: '/api/v1/videos',
  89       removeAfterUpload: true
  90     });
  91
  92     this.uploader.onBuildItemForm = (item, form) => {
  93       const name = this.form.value['name'];
  94       const description = this.form.value['description'];
  95
  96       form.append('name', name);
  97       form.append('description', description);
  98
  99       for (let i = 0; i < this.tags.length; i++) {
 100         form.append(`tags[${i}]`, this.tags[i]);
 101       }
 102     };
 103
 104     this.buildForm();
 105   }
 106
 107   onTagKeyPress(event: KeyboardEvent) {
 108     const currentTag = this.form.value['currentTag'];
 109
 110     // Enter press
 111     if (event.keyCode === 13) {
 112       // Check if the tag is valid and does not already exist
 113       if (
 114         currentTag.length >= 2 &&
 115         this.form.controls['currentTag'].valid &&
 116         this.tags.indexOf(currentTag) === -1
 117       ) {
 118         this.tags.push(currentTag);
 119         this.form.patchValue({ currentTag: '' });
 120
 121         if (this.tags.length >= 3) {
 122           this.form.get('currentTag').disable();
 123         }
 124       }
 125     }
 126   }
 127
 128   removeFile() {
 129     this.uploader.clearQueue();
 130   }
 131
 132   removeTag(tag: string) {
 133     this.tags.splice(this.tags.indexOf(tag), 1);
 134     this.form.get('currentTag').enable();
 135   }
 136
 137   upload() {
 138     const item = this.uploader.queue[0];
 139     // TODO: wait for https://github.com/valor-software/ng2-file-upload/pull/242
 140     item.alias = 'videofile';
 141
 142     // FIXME: remove
 143     // Run detection change for progress bar
 144     const interval = setInterval(() => { ; }, 250);
 145
 146     item.onSuccess = () => {
 147       clearInterval(interval);
 148
 149       console.log('Video uploaded.');
 150
 151       // Print all the videos once it's finished
 152       this.router.navigate(['/videos/list']);
 153     };
 154
 155     item.onError = (response: string, status: number) => {
 156       clearInterval(interval);
 157
 158       // We need to handle manually these cases beceause we use the FileUpload component
 159       if (status === 400) {
 160         this.error = response;
 161       } else if (status === 401) {
 162         this.error = 'Access token was expired, refreshing token...';
 163         this.authService.refreshAccessToken().subscribe(
 164           () => {
 165             // Update the uploader request header
 166             this.uploader.authToken = this.authService.getRequestHeaderValue();
 167             this.error += ' access token refreshed. Please retry your request.';
 168           }
 169         );
 170       } else {
 171         this.error = 'Unknow error';
 172         console.error(this.error);
 173       }
 174     };
 175
 176     this.uploader.uploadAll();
 177   }
 178 }