fix(iOS): change hardcoded config path when using custom config file for auto register plugins

ios/Capacitor/Capacitor/CAPInstanceConfiguration.h

@@ -13,6 +13,7 @@ NS_SWIFT_NAME(InstanceConfiguration)
 @property (nonatomic, readonly, nonnull) NSArray<NSString*> *allowedNavigationHostnames;
 @property (nonatomic, readonly, nonnull) NSURL *localURL;
 @property (nonatomic, readonly, nonnull) NSURL *serverURL;
+@property (nonatomic, readonly, nullable) NSURL *configURL;
 @property (nonatomic, readonly, nullable) NSString *errorPath;
 @property (nonatomic, readonly, nonnull) NSDictionary *pluginConfigurations;
 @property (nonatomic, readonly) BOOL loggingEnabled;

ios/Capacitor/Capacitor/CAPInstanceConfiguration.m

@@ -48,6 +48,13 @@ - (instancetype)initWithDescriptor:(CAPInstanceDescriptor *)descriptor isDebug:(
         else {
             _serverURL = _localURL;
         }
+
+        if (descriptor.configUrl != nil) {
+            _configURL = descriptor.configUrl;
+        }
+        else {
+            _configURL = [[NSURL alloc] initWithString:(@"capacitor.config.json")];
+        }
         _errorPath = descriptor.errorPath;
         // extract the one value we care about from the cordova configuration
         _cordovaDeployDisabled = [descriptor cordovaDeployDisabled];

ios/Capacitor/Capacitor/CAPInstanceDescriptor.h

@@ -68,6 +68,11 @@ NS_SWIFT_NAME(InstanceDescriptor)
  @discussion Defaults to nil, in which case the server URL will be constructed from @c urlScheme and @c urlHostname. If set, it will override the other properties. Set by @c server.url in the configuration file.
  */
 @property (nonatomic, copy, nullable) NSString *serverURL;
+/**
+ @brief The file URL from which Capacitor will load configuration
+ @discussion Defaults to @c capacitor.config.json located at the root of the application bundle.
+ */
+@property (nonatomic, copy, nullable) NSURL *configUrl;
 /**
  @brief The JSON dictionary that contains the plugin-specific configuration information.
  @discussion Set by @c plugins in the configuration file.

ios/Capacitor/Capacitor/CAPInstanceDescriptor.swift

@@ -30,6 +30,8 @@ internal extension InstanceDescriptor {
     // swiftlint:disable function_body_length
     // swiftlint:disable:next identifier_name
     @objc func _parseConfiguration(at capacitorURL: URL?, cordovaConfiguration cordovaURL: URL?) {
+        configUrl = capacitorURL
+
         // sanity check that the app directory is valid
         var isDirectory: ObjCBool = ObjCBool(false)
         if warnings.contains(.missingAppDir) == false,

ios/Capacitor/Capacitor/CapacitorBridge.swift

@@ -284,10 +284,9 @@ open class CapacitorBridge: NSObject, CAPBridgeProtocol {
      */
     func registerPlugins() {
         var pluginList: [AnyClass] = [CAPHttpPlugin.self, CAPConsolePlugin.self, CAPWebViewPlugin.self, CAPCookiesPlugin.self]
-
-        if autoRegisterPlugins {
+        if autoRegisterPlugins && config.configURL != nil {
             do {
-                if let pluginJSON = Bundle.main.url(forResource: "capacitor.config", withExtension: "json") {
+                if let pluginJSON = Bundle.main.url(forResource: (config.configURL!.path as NSString).deletingPathExtension, withExtension: "json") {
                     let pluginData = try Data(contentsOf: pluginJSON)
                     let registrationList = try JSONDecoder().decode(RegistrationList.self, from: pluginData)