Finalize level API and new Json library

1 files changed, 97 insertions, 0 deletions

diff --git a/src/main/java/net/sowgro/npehero/levelapi/Levels.java b/src/main/java/net/sowgro/npehero/levelapi/Levels.java
new file mode 100755
index 0000000..84ffe51
--- /dev/null
+++ b/src/main/java/net/sowgro/npehero/levelapi/Levels.java
@@ -0,0 +1,97 @@
+package net.sowgro.npehero.levelapi;
+
+import java.io.File;
+import java.io.FileNotFoundException;
+import java.io.IOException;
+import java.nio.file.FileAlreadyExistsException;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.util.Comparator;
+import java.util.HashMap;
+
+import javafx.collections.FXCollections;
+import javafx.collections.ObservableList;
+
+/**
+ * Stores a list of all the levels
+ */
+public class Levels {
+
+    public static final ObservableList<Level> list = FXCollections.observableArrayList();
+    public static final HashMap<String, Exception> problems = new HashMap<>();
+
+    private static final File dir = new File("levels");
+
+    /**
+     * Reads contents of the levels folder and creates a level form each subfolder
+     * <p>
+     * All subfolders in the levels folder are assumed to be levels
+     * @throws FileNotFoundException If the levels folder is missing.
+     * @throws IOException If there is a problem reading in the levels.
+     */
+    public static void readData() throws IOException {
+        list.clear();
+        File[] fileList = dir.listFiles();
+        if (fileList == null) {
+            throw new FileNotFoundException();
+        }
+        for (File file: fileList) {
+            try {
+                Level level = new Level(file);
+                list.add(level);
+            } catch (IOException e) {
+                problems.put("", e);
+                e.printStackTrace();
+            }
+        }
+        list.sort(Comparator.naturalOrder());
+    }
+
+    /**
+     * Creates a subfolder in the levels folder for the new level then creates the level with it
+     * @param text: the name of the directory and default title
+     * @throws IOException if there was an error adding the level
+     */
+    public static void add(String text) throws IOException {
+        File levelDir = new File(dir, text.toLowerCase().replaceAll("\\W+", "-"));
+        if (levelDir.exists()) {
+            throw new FileAlreadyExistsException(levelDir.getName());
+        }
+        if (levelDir.mkdirs()) {
+            Level temp = new Level(levelDir);
+            temp.title = text;
+            list.add(temp);
+        }
+        else {
+            throw new IOException();
+        }
+    }
+
+    /**
+     * Removes level from the filesystem then reloads this levelController
+     * @param level: the level to be removed
+     * @throws IOException If there is a problem deleting the level
+     */
+    public static void remove(Level level) throws IOException {
+        File hold = level.dir;
+        Files.walk(hold.toPath())
+            .sorted(Comparator.reverseOrder())
+            .map(Path::toFile)
+            .forEach(File::delete);
+        list.remove(level);
+    }
+
+    /**
+     * Gets a list of only the valid levels.
+     * @return A list of the valid levels.
+     */
+    public static ObservableList<Level> getValidList() {
+        ObservableList<Level> validList = FXCollections.observableArrayList();
+        for (Level level : list) {
+            if (level.isValid()) {
+                validList.add(level);
+            }
+        }
+        return validList;
+    }
+}
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