add handleResult

tgbotapi.webapps/src/jsMain/kotlin/dev/inmo/tgbotapi/webapps/SendData.kt

@@ -0,0 +1,18 @@
+package dev.inmo.tgbotapi.webapps
+
+import dev.inmo.tgbotapi.types.WebAppQueryId
+
+/**
+ * @param onSendData Should return the data which must be used in [WebApp.sendData]. If returns null, data will not be sent
+ * @param onAnswerWebAppQuery In case if [WebAppInitData.queryId] is presented in [WebApp.initDataUnsafe], will be called
+ * that callback. Before and after calling of this callback will not be used any method of answering to the telegram
+ * system, so, you must use something like [answerWebAppQuery] by yourself to send the result
+ */
+inline fun handleResult(
+    onSendData: () -> String?,
+    onAnswerWebAppQuery: (WebAppQueryId) -> Unit
+) {
+    webApp.initDataUnsafe.queryId ?.let {
+        onAnswerWebAppQuery(it)
+    } ?: webApp.sendData(onSendData() ?: return)
+}