Implement basic files and database management

src/main/java/wtf/beatrice/nounspicker/NounsPicker.java

@@ -6,6 +6,10 @@ import org.bukkit.plugin.java.JavaPlugin;
 import wtf.beatrice.nounspicker.commands.NounsCommand;
 import wtf.beatrice.nounspicker.objects.PAPIManager;
 import wtf.beatrice.nounspicker.utils.ConsoleLogger;
+import wtf.beatrice.nounspicker.utils.DatabaseManager;
+import wtf.beatrice.nounspicker.utils.FileManager;
+
+import java.io.File;
 
 public class NounsPicker extends JavaPlugin
 {
@@ -28,7 +32,7 @@ public class NounsPicker extends JavaPlugin
             logger.log("PlaceholderAPI integration loaded!");
         } else {
             logger.err("Missing PlaceholderAPI! The plugin cannot continue.");
-            pluginManager.disablePlugin(this);
+            disable();
             return;
         }
 
@@ -36,6 +40,26 @@ public class NounsPicker extends JavaPlugin
         getCommand("nouns").setExecutor(new NounsCommand(this));
         logger.log("Commands registered!");
 
+        logger.log("Checking files...");
+        FileManager fileManager = new FileManager(this);
+        if (!fileManager.routineCheck())
+        {
+            logger.err("Error during routine file check! The plugin will halt.");
+            disable();
+            return;
+        }
+        logger.log("Files checked!");
+
+        logger.log("Connecting to database...");
+        String dbFilePath = getDataFolder().getAbsolutePath() + File.separator + "db.sqlite";
+        DatabaseManager dbManager = new DatabaseManager(dbFilePath);
+        if(dbManager.initialize())
+        {
+            logger.log("Database connection initialized!");
+        } else {
+            logger.err("Error initializing database connection!");
+        }
+
         logger.log("Plugin loaded!");
     }
 
@@ -43,4 +67,9 @@ public class NounsPicker extends JavaPlugin
     {
         return instance;
     }
+
+    private void disable()
+    {
+        pluginManager.disablePlugin(this);
+    }
 }

src/main/java/wtf/beatrice/nounspicker/utils/DatabaseManager.java

@@ -0,0 +1,52 @@
+package wtf.beatrice.nounspicker.utils;
+
+import java.sql.Connection;
+import java.sql.DriverManager;
+import java.sql.SQLException;
+
+public class DatabaseManager
+{
+
+    private final static String sqliteURL = "jdbc:sqlite:%path%";
+    private Connection dbConnection = null;
+    private ConsoleLogger logger;
+    private final String dbPath;
+
+    public DatabaseManager(String dbPath)
+    {
+        this.dbPath = dbPath;
+        logger = new ConsoleLogger(getClass());
+    }
+
+    public boolean initialize()
+    {
+        String url = sqliteURL.replace("%path%", dbPath);
+
+        if (dbConnection != null)
+        {
+            try {
+                if(!dbConnection.isClosed())
+                {
+                    dbConnection.close();
+                }
+            } catch (SQLException e) {
+                logger.err(e.getMessage());
+                return false;
+            }
+
+            dbConnection = null;
+        }
+
+
+        try {
+            dbConnection = DriverManager.getConnection(url);
+            logger.log("Database connection established!");
+            return true;
+        } catch (SQLException e) {
+            logger.err(e.getMessage());
+            return false;
+        }
+
+    }
+
+}

src/main/java/wtf/beatrice/nounspicker/utils/FileManager.java

@@ -0,0 +1,36 @@
+package wtf.beatrice.nounspicker.utils;
+
+import wtf.beatrice.nounspicker.NounsPicker;
+
+import java.io.File;
+
+public class FileManager
+{
+    private final NounsPicker plugin;
+    private final ConsoleLogger logger;
+    public FileManager(NounsPicker plugin)
+    {
+        this.plugin = plugin;
+        logger = new ConsoleLogger(getClass());
+    }
+
+    public boolean routineCheck()
+    {
+        File dataDir = plugin.getDataFolder();
+
+        logger.log("Checking plugin directory...");
+        if(!dataDir.exists())
+        {
+            logger.log("Creating plugin directory!");
+            if (dataDir.mkdirs())
+            {
+                logger.log("Plugin directory created!");
+            } else {
+                logger.err("Error creating plugin directory!");
+                return false;
+            }
+        }
+
+        return true;
+    }
+}