Get online module compiling on 1.13

src/main/java/com/replaymod/online/PlainFileAuthData.java

@@ -0,0 +1,68 @@
+package com.replaymod.online;
+
+import com.replaymod.online.api.ApiClient;
+import com.replaymod.online.api.AuthData;
+import com.replaymod.online.api.replay.holders.AuthConfirmation;
+
+import java.io.FileNotFoundException;
+import java.io.IOException;
+import java.nio.charset.StandardCharsets;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.nio.file.StandardOpenOption;
+
+/**
+ * Auth data stored in a plain text file.
+ */
+public class PlainFileAuthData implements AuthData {
+    private final Path path;
+    private String userName;
+    private String authKey;
+
+    public PlainFileAuthData(Path path) {
+        this.path = path;
+    }
+
+    /**
+     * Loads the data from the JSON file and checks for its validity.
+     * If the data is invalid, the JSON file is removed.
+     * @param apiClient Api client used for validating the auth data
+     */
+    public void load(ApiClient apiClient) throws IOException {
+        String authKey;
+        try {
+            authKey = new String(Files.readAllBytes(path), StandardCharsets.UTF_8);
+        } catch (FileNotFoundException ignored) {
+            return;
+        }
+        AuthConfirmation result = apiClient.checkAuthkey(authKey);
+        if (result != null) {
+            this.authKey = authKey;
+            this.userName = result.getUsername();
+        } else {
+            Files.deleteIfExists(path);
+        }
+    }
+
+    @Override
+    public String getUserName() {
+        return userName;
+    }
+
+    @Override
+    public String getAuthKey() {
+        return authKey;
+    }
+
+    @Override
+    public void setData(String userName, String authKey) {
+        this.userName = userName;
+        this.authKey = authKey;
+
+        try {
+            Files.write(path, authKey.getBytes(StandardCharsets.UTF_8), StandardOpenOption.CREATE_NEW);
+        } catch (IOException e) {
+            ReplayModOnline.LOGGER.error("Saving auth data:", e);
+        }
+    }
+}