Added option to disable collection messageLog

fints4k/src/commonMain/kotlin/net/dankito/banking/fints/config/FinTsClientOptions.kt

@@ -3,6 +3,15 @@ package net.dankito.banking.fints.config
 import net.dankito.banking.fints.model.ProductData
 
 data class FinTsClientOptions(
+
+    /**
+     * If FinTS messages sent to and received from bank servers and errors should be collected. They are then accessible
+     * via [net.dankito.banking.fints.response.client.FinTsClientResponse.messageLog].
+     *
+     * Set to false by default.
+     */
+    val collectMessageLog: Boolean = false,
+
     /**
      * If set to true then [net.dankito.banking.fints.callback.FinTsClientCallback.messageLogAdded] get fired when a
      * FinTS message get sent to bank server, a FinTS message is received from bank server or an error occurred.

fints4k/src/commonMain/kotlin/net/dankito/banking/fints/log/MessageLogCollector.kt

@@ -72,13 +72,17 @@ open class MessageLogCollector(
     }
 
     protected open fun addMessageLogEntry(type: MessageLogEntryType, context: MessageContext, messageTrace: String, message: String, error: Throwable? = null) {
-        val newEntry = MessageLogEntry(type, context, messageTrace, message, error)
+        if (options.collectMessageLog || options.fireCallbackOnMessageLogs) {
+            val newEntry = MessageLogEntry(type, context, messageTrace, message, error)
 
-        _messageLog.add(newEntry)
+            if (options.collectMessageLog) {
+                _messageLog.add(newEntry)
+            }
 
-        if (options.fireCallbackOnMessageLogs) {
-            // TODO: pretty print message
-            callback.messageLogAdded(newEntry)
+            if (options.fireCallbackOnMessageLogs) {
+                // TODO: pretty print message
+                callback.messageLogAdded(newEntry)
+            }
         }
     }
 

fints4k/src/commonMain/kotlin/net/dankito/banking/fints/response/client/FinTsClientResponse.kt

@@ -18,6 +18,10 @@ open class FinTsClientResponse(
     open val isStrongAuthenticationRequired: Boolean,
     open val tanRequired: TanResponse? = null,
 
+    /**
+     * Collected FinTS messages sent to and received from bank servers and error messages. Will only be available if
+     * [net.dankito.banking.fints.config.FinTsClientOptions.collectMessageLog] is set to true (is disabled by default).
+     */
     open val messageLog: List<MessageLogEntry>,
 
     /**