[advancedcontentfilter] Improve error handling

- Add Logger to Slim application to log to Friendica log file
- Show more specific error message when rule syntax check fails
- Align editorconfig with Composer style
- Add minimum PHP version to composer.json

.editorconfig

@@ -27,3 +27,6 @@ indent_size = 2
 [*.json]
 indent_style = space
 indent_size = 2
+
+[composer.json]
+indent_size = 4

advancedcontentfilter/advancedcontentfilter.js

@@ -54,7 +54,7 @@ new Vue({
 					self.rules.push(responseJSON.rule);
 					self.resetForm();
 				}, function (response) {
-					self.errorMessage = response.responseJSON.message;
+					self.errorMessage = response.responseJSON.exception[0].message;
 				});
 			}
 		},
@@ -74,7 +74,7 @@ new Vue({
 				self.rules[self.editedIndex] = rule;
 				self.resetForm();
 			}, function (response) {
-				self.errorMessage = response.responseJSON.message;
+				self.errorMessage = response.responseJSON.exception[0].message;
 			});
 		},
 

advancedcontentfilter/composer.json

@@ -17,6 +17,9 @@
     "license": "3-clause BSD license",
     "minimum-stability": "stable",
     "config": {
+        "platform": {
+            "php": "7.4"
+        },
         "optimize-autoloader": true,
         "autoloader-suffix": "AdvancedContentFilterAddon",
         "preferred-install": "dist"

advancedcontentfilter/src/middlewares.php

@@ -29,4 +29,4 @@ use Friendica\DI;
  */
 $slim->addRoutingMiddleware();
 
-$errorMiddleware = $slim->addErrorMiddleware(true, true, true);
+$errorMiddleware = $slim->addErrorMiddleware(true, true, true, DI::logger());