rewrote ImageRouter

- introduced UploadProvider interface
- rewrote all current UploadProviders

Signed-off-by: Philip Molares <philip.molares@udo.edu>
Signed-off-by: David Mehren <dmehren1@gmail.com>

lib/web/imageRouter/azure.ts

@@ -0,0 +1,38 @@
+import azure from 'azure-storage'
+import path from 'path'
+
+import { config } from '../../config'
+import { logger } from '../../logger'
+import { UploadProvider } from './index'
+
+const AzureUploadProvider: UploadProvider = {
+  uploadImage: (imagePath, callback) => {
+    if (!callback || typeof callback !== 'function') {
+      logger.error('Callback has to be a function')
+      return
+    }
+
+    if (!imagePath) {
+      callback(new Error('Image path is missing or wrong'), undefined)
+      return
+    }
+
+    const azureBlobService = azure.createBlobService(config.azure.connectionString)
+
+    azureBlobService.createContainerIfNotExists(config.azure.container, { publicAccessLevel: 'blob' }, function (err, _, __) {
+      if (err) {
+        callback(new Error(err.message), undefined)
+      } else {
+        azureBlobService.createBlockBlobFromLocalFile(config.azure.container, path.basename(imagePath), imagePath, function (err, result, _) {
+          if (err) {
+            callback(new Error(err.message), undefined)
+          } else {
+            callback(undefined, azureBlobService.getUrl(config.azure.container, result.name))
+          }
+        })
+      }
+    })
+  }
+}
+
+export { AzureUploadProvider }