MauroDataMappergh-808 Attachment file size limit validation

src/app/model/api-properties.ts

@@ -334,5 +334,13 @@ export const propertyMetadata: ApiPropertyMetadata[] = [
     isSystem: true,
     publiclyVisible: true,
     requiresReload: true,
+  },
+  {
+    key: 'feature.attachment_size_limit_mb',
+    category: 'Features',
+    editType: ApiPropertyEditType.Value,
+    isSystem: true,
+    publiclyVisible: true,
+    requiresReload: true
   }
 ];

src/app/shared/attachment-list/attachment-list.component.ts

@@ -40,7 +40,9 @@ import {
   ReferenceFile,
   ReferenceFileCreatePayload,
   ReferenceFileIndexResponse,
-  Securable
+  Securable,
+  ApiProperty,
+  ApiPropertyIndexResponse
 } from '@maurodatamapper/mdm-resources';
 import { EditableRecord } from '@mdm/model/editable-forms';
 import { MatDialog } from '@angular/material/dialog';
@@ -76,6 +78,9 @@ export class AttachmentListComponent implements AfterViewInit {
     EditableRecord<ReferenceFile, ReferenceFileEditor>
   >();
   apiEndpoint: string;
+  attachmentFileSizeLimit = 0;
+
+  private readonly attachmentFileSizeLimitKey = 'feature.attachment_size_limit_mb';
 
   constructor(
     private resources: MdmResourcesService,
@@ -137,6 +142,18 @@ export class AttachmentListComponent implements AfterViewInit {
 
         this.dataSource.data = this.records;
       });
+
+    this.resources.apiProperties
+      .listPublic()
+      .pipe(
+        catchError(errors => {
+          this.messageHandler.showError('There was a problem getting the configuration properties.', errors);
+          return [];
+        })
+      )
+      .subscribe((response: ApiPropertyIndexResponse) => {
+        this.loadAttachmentFileSizeLimit(response.body.items);
+      });
   }
 
   applyFilter() {
@@ -269,6 +286,11 @@ export class AttachmentListComponent implements AfterViewInit {
         fileContents: Array.from(fileBytes)
       };
 
+      if (this.attachmentFileSizeLimit > 0 && +file.size/1000000 > this.attachmentFileSizeLimit) {
+        this.messageHandler.showError(`There was a problem saving the attachment. Files cannot be larger than ${this.attachmentFileSizeLimit}mb.`);
+        return EMPTY;
+      }
+
       this.resources.catalogueItem
         .saveReferenceFiles(this.domainType, this.parent.id, data)
         .pipe(
@@ -290,4 +312,12 @@ export class AttachmentListComponent implements AfterViewInit {
         });
     };
   }
+
+  private loadAttachmentFileSizeLimit(properties: ApiProperty[]) {
+    this.attachmentFileSizeLimit = JSON.parse(this.getContentProperty(properties, this.attachmentFileSizeLimitKey));
+  }
+
+  private getContentProperty(properties: ApiProperty[], key: string): string {
+    return properties?.find(p => p.key === key)?.value;
+  }
 }