create new interface for io operations

src/main/java/de/marhali/easyi18n/io/IOStrategy.java

@@ -0,0 +1,51 @@
+package de.marhali.easyi18n.io;
+
+import com.intellij.openapi.project.Project;
+
+import de.marhali.easyi18n.model.SettingsState;
+import de.marhali.easyi18n.model.TranslationData;
+
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+
+import java.util.function.Consumer;
+
+/**
+ * Primary interface for the exchange of translation data with the underlying IO system.
+ * The selection of the right IO strategy is done by the @canUse method (first match).
+ * Every strategy needs to be registered inside {@link de.marhali.easyi18n.DataStore}
+ *
+ * @author marhali
+ */
+public interface IOStrategy {
+    /**
+     * Decides whether this strategy should be applied or not. First matching one will be used.
+     * @param project IntelliJ project context
+     * @param localesPath Root directory which leads to all i18n files
+     * @param state Plugin configuration
+     * @return true if strategy is responsible for the found structure
+     */
+    boolean canUse(@NotNull Project project, @NotNull String localesPath, @NotNull SettingsState state);
+
+    /**
+     * Loads the translation files and passes them in the result consumer.
+     * Result payload might be null if operation failed.
+     * @param project IntelliJ project context
+     * @param localesPath Root directory which leads to all i18n files
+     * @param state Plugin configuration
+     * @param result Passes loaded data
+     */
+    void read(@NotNull Project project, @NotNull String localesPath, @NotNull SettingsState state,
+              @NotNull Consumer<@Nullable TranslationData> result);
+
+    /**
+     * Writes the provided translation data to the IO system.
+     * @param project InteliJ project context
+     * @param localesPath Root directory which leads to all i18n files
+     * @param state Plugin configuration
+     * @param data Translations to save
+     * @param result Indicates whether the operation was successful
+     */
+    void write(@NotNull Project project, @NotNull String localesPath, @NotNull SettingsState state,
+               @NotNull TranslationData data, @NotNull Consumer<Boolean> result);
+}

src/main/java/de/marhali/easyi18n/io/TranslatorIO.java

@@ -13,6 +13,7 @@ import java.util.function.Consumer;
  * Can be implemented by various standards. Such as JSON, Properties-Bundle and so on.
  * @author marhali
  */
+@Deprecated
 public interface TranslatorIO {
 
     /**