Added back picasa as a potential source (#567)

* Added back picasa as a potential source

* Invalid values in fromSources only trigger a warning if they are not valid instead of an error

Author: RatGabi

src/lib/picker.ts

@@ -787,7 +787,17 @@ class PickerLoader {
     const validateRes = getValidator(PickerParamsSchema)(options);
 
     if (validateRes.errors.length) {
-      throw new FilestackError(`Invalid picker params`, validateRes.errors, FilestackErrorType.VALIDATION);
+      validateRes.errors.forEach(error => {
+        if (error.path.includes('fromSources')) {
+          console.warn(`Warning: Invalid source \"${error.instance}\" found and removed!`);
+          options.fromSources = options.fromSources.filter(source => source !== error.instance);
+        } else {
+          throw new FilestackError(`Invalid picker params`, validateRes.errors, FilestackErrorType.VALIDATION);
+        }
+      });
+      if (!options.fromSources.length) {
+        delete options.fromSources;
+      }
     }
 
     this._initialized = this.loadModule(client, options);

src/schema/picker.schema.ts

@@ -57,35 +57,39 @@ export const PickerParamsSchema = {
     },
     fromSources: {
       type: 'array',
-      items: [
-        {
-          type: ['string', 'object'],
-          additionalProperties: false,
-          enum: [
-            'local_file_system',
-            'url',
-            'imagesearch',
-            'facebook',
-            'instagram',
-            'googledrive',
-            'unsplash',
-            'dropbox',
-            'webcam',
-            'video',
-            'audio',
-            'box',
-            'github',
-            'gmail',
-            'googlephotos',
-            'onedrive',
-            'onedriveforbusiness',
-            'clouddrive',
-            'googlephotos',
-            'customsource',
-            'tint',
-          ],
-        },
-      ],
+      items: {
+        anyOf: [
+          {
+            type: 'string',
+            enum: [
+              'local_file_system',
+              'url',
+              'imagesearch',
+              'facebook',
+              'instagram',
+              'googledrive',
+              'picasa',
+              'unsplash',
+              'dropbox',
+              'webcam',
+              'video',
+              'audio',
+              'box',
+              'github',
+              'gmail',
+              'googlephotos',
+              'onedrive',
+              'onedriveforbusiness',
+              'clouddrive',
+              'customsource',
+              'tint',
+            ],
+          },
+          {
+            type: 'object',
+          },
+        ],
+      },
     },
     container: {
       format: 'HTMLContainer',