1 files changed, 67 insertions, 0 deletions
diff --git a/app/src/main/java/com/nextcloud/client/network/WalledCheckCache.kt b/app/src/main/java/com/nextcloud/client/network/WalledCheckCache.kt
new file mode 100644
index 0000000000..6e0d70fe08
--- /dev/null
+++ b/app/src/main/java/com/nextcloud/client/network/WalledCheckCache.kt
@@ -0,0 +1,67 @@
+/*
+ * Nextcloud Android client application
+ *
+ *  @author Álvaro Brey
+ *  Copyright (C) 2022 Álvaro Brey
+ *  Copyright (C) 2022 Nextcloud GmbH
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU AFFERO GENERAL PUBLIC LICENSE
+ * License as published by the Free Software Foundation; either
+ * version 3 of the License, or any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU AFFERO GENERAL PUBLIC LICENSE for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public
+ * License along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+package com.nextcloud.client.network
+
+import com.nextcloud.client.core.Clock
+import javax.inject.Inject
+import javax.inject.Singleton
+
+@Singleton
+class WalledCheckCache @Inject constructor(private val clock: Clock) {
+
+    private var value: Pair<Long, Boolean>? = null
+
+    @Synchronized
+    fun isExpired(): Boolean {
+        return when (val timestamp = value?.first) {
+            null -> true
+            else -> {
+                val diff = clock.millisSinceBoot - timestamp
+                diff >= CACHE_TIME_MS
+            }
+        }
+    }
+
+    @Synchronized
+    fun setValue(value: Boolean) {
+        this.value = Pair(clock.millisSinceBoot, value)
+    }
+
+    @Synchronized
+    fun getValue(): Boolean? {
+        return when (isExpired()) {
+            true -> null
+            else -> value?.second
+        }
+    }
+
+    @Synchronized
+    fun clear() {
+        value = null
+    }
+
+    companion object {
+        // 10 minutes
+        private const val CACHE_TIME_MS = 10 * 60 * 1000
+    }
+}