add clearCookie (#12)

Author: jurihahn

README.md

@@ -12,6 +12,11 @@ const response = await fetch(window.WebviewProxy.convertProxyUrl(url));
 console.debug(response);
 ```
 
+#### To delete all Cookies use this:
+```javascript
+window.WebviewProxy.clearCookie();
+```
+
 **Make sure you are using a custom scheme with your iOS platform**
 
 This plugin uses the WKURLSchemeHandler provided by WKWebView. It requires the latest version of cordova-ios.

src/ios/WebviewProxy.m

@@ -8,6 +8,8 @@ @interface WebviewProxy : CDVPlugin {
 
 @property (nonatomic) NSMutableArray* stoppedTasks;
 
+- (void)clearCookie:(CDVInvokedUrlCommand*)command;
+
 @end
 
 @implementation WebviewProxy
@@ -101,4 +103,19 @@ - (void) stopSchemeTask: (id <WKURLSchemeTask>)urlSchemeTask {
     [self.stoppedTasks addObject:urlSchemeTask];
 }
 
+- (void) clearCookie:(CDVInvokedUrlCommand*)command {
+    CDVPluginResult* pluginResult = nil;
+
+    WKWebsiteDataStore* dataStore = [WKWebsiteDataStore defaultDataStore];
+    WKHTTPCookieStore* cookieStore = dataStore.httpCookieStore;
+    [cookieStore getAllCookies:^(NSArray<NSHTTPCookie *> * cookies) {
+        for (NSHTTPCookie* _c in cookies)
+        {
+            [cookieStore deleteCookie:_c completionHandler:nil];
+        };
+    }];
+
+    [self.commandDelegate sendPluginResult:pluginResult callbackId:command.callbackId];
+}
+
 @end

www/WebviewProxy.js

@@ -16,4 +16,8 @@ WebviewProxy.prototype.convertProxyUrl = function (path) {
   return path;
 }
 
+WebviewProxy.prototype.clearCookie = function (successCallback, errorCallback) {
+    cordova.exec(successCallback, errorCallback, "WebviewProxy", "clearCookie", []);
+}
+
 module.exports = new WebviewProxy();