Fix thumbnail editing, add blobtodataurl method

projects/common/src/fm/components/thumbnail/thumbnail.component.html

@@ -1,9 +1,9 @@
 <div #thumbnail class="thumbnail" [style.background-color]="itemTypeService.getColor(item.itemType)" >
     <div class="content">
-        <img *ngIf="item.thumbnail" class="card-img-top" [src]="getThumbnailUrl(item)" />
+        <img *ngIf="hasThumbnail()" class="card-img-top" [src]="getThumbnailUrl(item)" />
-        <div *ngIf="!item.thumbnail" class="large-icon" [style.font-size]="getFontSize()" [style.line-height]="getLineHeight()"><i [ngClass]="itemTypeService.getIcon(item.itemType)"></i></div>
+        <div *ngIf="!hasThumbnail()" class="large-icon" [style.font-size]="getFontSize()" [style.line-height]="getLineHeight()"><i [ngClass]="itemTypeService.getIcon(item.itemType)"></i></div>
         <div *ngIf="canEdit()" class="edit btn btn-secondary rounded-circle" (click)="onEditClick()"><i class="fal fa-camera"></i></div>
     </div>
 </div>
 
-<fm-edit-image-modal #modal (changed)="onChanged()"></fm-edit-image-modal>
+<fm-edit-image-modal #modal (changed)="onChanged($event)"></fm-edit-image-modal>

projects/common/src/fm/components/thumbnail/thumbnail.component.ts

@@ -1,7 +1,8 @@
-import { Component,Input ,ViewChild,ElementRef,ChangeDetectorRef} from '@angular/core';
+import { Component,Input ,ViewChild,ElementRef,ChangeDetectorRef, Output,EventEmitter} from '@angular/core';
 import { Store } from '@ngrx/store';
 
 import { IListItem  } from '../../models/list.item';
+import { ImageService } from '../../services/image.service';
 import { commonReducers,ItemTypeService } from '../../../public-api'
 import { EditImageModalComponent} from '../edit-image-modal/edit-image-modal.component';
 import { AppConfig } from "../../shared/app.config";
@@ -16,14 +17,25 @@ import { AppConfig } from "../../shared/app.config";
   export class ThumbnailComponent {
     @Input() public item: IListItem;
     @Input() public edit: boolean = false;
+    @Input() public save: boolean = true;
+    @Output() changed = new EventEmitter();
     @ViewChild('thumbnail') el:ElementRef;
     @ViewChild('modal') modal:EditImageModalComponent;
 
-    constructor(public store: Store<commonReducers.State>, public itemTypeService: ItemTypeService,public appConfig: AppConfig,private changeDetector:ChangeDetectorRef) {
+    public image = null;
+    private endpoint = "";
+    public thumnailUrl = "";
+
+    constructor(public store: Store<commonReducers.State>, public itemTypeService: ItemTypeService,public appConfig: AppConfig,private changeDetector:ChangeDetectorRef,public imageService:ImageService) {
     }
 
     getThumbnailUrl(item:IListItem):string {
-        return this.appConfig.getConfig("apiEndPoint")+item.url+'/thumbnail?v=' + Date.parse(item.updated);
+        if(this.image == null && this.item.thumbnail) {
+            this.thumnailUrl = this.appConfig.getConfig("apiEndPoint")+item.url+'/thumbnail?v=' + Date.parse(item.updated);
+        } else if (this.image == null) {
+            this.thumnailUrl = "";
+        } 
+        return this.thumnailUrl;
     }
 
     getFontSize():string {        
@@ -47,15 +59,28 @@ import { AppConfig } from "../../shared/app.config";
         return this.edit && this.item != null;
     }
 
-    onEditClick() {
+    hasThumbnail():boolean {
-       var endpoint = `${this.appConfig.getConfig("apiEndPoint")}/api/v1/items/${this.item.code}/thumbnail`;
+        return (this.item && this.item.thumbnail) || this.image != null;
-       this.modal.open(endpoint,4/3);
     }
 
-    onChanged() {
+    onEditClick() {
-        if(this.item) {
+       this.endpoint = `${this.appConfig.getConfig("apiEndPoint")}/api/v1/items/${this.item.code}/thumbnail`;
-            this.item.updated = new Date(new Date().getTime()).toISOString();
+       this.modal.open(this.endpoint,4/3,false,200,false);
+    }
+
+    onChanged(event:any) {
+        this.image = event.croppedImage;
+        this.imageService.blobToDataUrl(event.croppedImage).then(url => {
+           this.thumnailUrl = url
            this.changeDetector.detectChanges();           
+           if(this.save) this.saveImage();
+           this.changed.emit(event.croppedImage);
+        });                
+    }
+
+    saveImage() {
+        if(this.image) {
+          this.imageService.putImage(this.endpoint,this.image).subscribe(() => {});      
         }
       }
   }

projects/common/src/fm/services/image.service.ts

@@ -48,4 +48,18 @@ export class ImageService {
   blobToFile(blob:Blob, filename:string):File {
     return new File([blob],filename,{type:blob.type});
   }
+
+  blobToDataUrl(blob:File):Promise<string> {
+
+    return new Promise<string>((resolve) => {
+      let reader = new FileReader();
+      reader.addEventListener('error', () => {
+        resolve("");
+      });
+      reader.addEventListener("load", function () {
+        resolve(reader.result as string);
+      }, false);
+      reader.readAsDataURL(blob);
+    });
+  }
 }