From 1f08fa0d9d243e5a6a3ec69cd3ff264a59f5a04c Mon Sep 17 00:00:00 2001
From: Pingex <pingex@pingex.net>
Date: Fri, 8 Apr 2016 01:26:25 +0200
Subject: [PATCH] Configuration Class

---
 .gitignore                                    |  1 +
 build.gradle                                  |  6 +-
 config.example.ini                            |  0
 .../net/pingex/discordbot/Configuration.java  | 88 +++++++++++++++++++
 .../net/pingex/discordbot/DiscordBot.java     | 24 ++++-
 5 files changed, 114 insertions(+), 5 deletions(-)
 create mode 100644 config.example.ini
 create mode 100644 src/main/java/net/pingex/discordbot/Configuration.java

diff --git a/.gitignore b/.gitignore
index 666905c..9271d4f 100644
--- a/.gitignore
+++ b/.gitignore
@@ -69,3 +69,4 @@ gradle-app.setting
 # # Work around https://youtrack.jetbrains.com/issue/IDEA-116898
 # gradle/wrapper/gradle-wrapper.properties
 
+config.ini
\ No newline at end of file
diff --git a/build.gradle b/build.gradle
index 00b2f76..45368cb 100644
--- a/build.gradle
+++ b/build.gradle
@@ -3,10 +3,6 @@ apply plugin: 'java'
 group 'net.pingex.discordbot'
 version '0.1-dev'
 
-apply plugin: 'java'
-
-sourceCompatibility = 1.5
-
 repositories {
     mavenCentral()
     jcenter()
@@ -18,4 +14,6 @@ repositories {
 dependencies {
     testCompile group: 'junit', name: 'junit', version: '4.11'
     compile "com.github.austinv11:Discord4j:2.4.2"
+    compile "org.mod4j.org.apache.commons:cli:1.0.0"
+    compile "org.ini4j:ini4j:0.5.4"
 }
diff --git a/config.example.ini b/config.example.ini
new file mode 100644
index 0000000..e69de29
diff --git a/src/main/java/net/pingex/discordbot/Configuration.java b/src/main/java/net/pingex/discordbot/Configuration.java
new file mode 100644
index 0000000..e86b08f
--- /dev/null
+++ b/src/main/java/net/pingex/discordbot/Configuration.java
@@ -0,0 +1,88 @@
+package net.pingex.discordbot;
+
+import org.ini4j.Ini;
+import java.io.File;
+import java.io.IOException;
+import java.util.List;
+import java.util.logging.Logger;
+
+/**
+ * Contains configuration keys for the whole app. Also parses a .ini configuration file.
+ * @version 0.1-dev
+ * @author Raphael "Pingex" NAAS
+ */
+public final class Configuration
+{
+	private static Logger LOGGER = Logger.getLogger(Configuration.class.getName());
+
+	/**
+	 * Main Configuration Datastore
+	 */
+	private static Ini datastore = new Ini();
+
+	/**
+	 * Load keys from a file to the datastore
+	 * @param path Relative or absolute path to the config file
+	 * @throws IOException
+	 */
+	public static void loadConfiguration(String path) throws IOException
+	{
+		LOGGER.info("Loading configuration file: " + path);
+		datastore.load(new File(path));
+	}
+
+	/**
+	 * Request a value from the datastore
+	 * @param section Section of the datastore
+	 * @param key Key wanted
+	 * @return A String representation of the value, `null` if the key doesn't exist
+	 */
+	public static String getValue(String section, String key)
+	{
+		return getValue(section, key, String.class);
+	}
+
+	/**
+	 * Request a value from the datastore
+	 * @param section Section of the datastore
+	 * @param key Key wanted
+	 * @param returnType Method will return a variable of this type
+	 * @param <T> Method will return a variable of this type
+	 * @return A <T> representation of the value, `null` if the key doesn't exist
+	 */
+	public static<T> T getValue(String section, String key, Class<T> returnType)
+	{
+		return datastore.get(section, key, returnType);
+	}
+
+	/**
+	 * Return all the values associated with this key
+	 * @param section Section of the datastore
+	 * @param key Key wanted
+	 * @return A List of String containing all the values
+	 */
+	public static List<String> getMultiValue(String section, String key)
+	{
+		return datastore.get(section).getAll(key);
+	}
+
+	/**
+	 * Change a key value. If value is null or an empty String, then the key will be removed from the datastore.
+	 * Please note this method doesn't support multivalue keys.
+	 * @param section Section of the datastore
+	 * @param key Key to change
+	 * @param value New key value
+	 */
+	public static void setValue(String section, String key, String value)
+	{
+		if(value == null || value.isEmpty())
+			datastore.remove(section, key);
+		else
+		{
+			if(datastore.get(section, key) == null)
+				datastore.add(section, key, value);
+			else
+				datastore.get(section).replace(key, value);
+		}
+	}
+}
diff --git a/src/main/java/net/pingex/discordbot/DiscordBot.java b/src/main/java/net/pingex/discordbot/DiscordBot.java
index eaa23cb..c4ced47 100644
--- a/src/main/java/net/pingex/discordbot/DiscordBot.java
+++ b/src/main/java/net/pingex/discordbot/DiscordBot.java
@@ -1,5 +1,8 @@
 package net.pingex.discordbot;
 
+import java.io.IOException;
+import java.util.logging.Logger;
+
 /**
  * Main Entry Point
  * @version 0.1-dev
@@ -7,8 +10,27 @@ package net.pingex.discordbot;
  */
 public class DiscordBot
 {
+	private static final Logger LOGGER = Logger.getLogger(DiscordBot.class.getName());
+
+	/**
+	 * Entry point
+	 * @param args Arguments passed to java
+	 */
 	public static void main(String[] args)
 	{
-		System.out.println("Hello World");
+		LOGGER.info("Hello World, starting up");
+		loadConfigurationSubroutine();
+	}
+
+	private static void loadConfigurationSubroutine() // TODO: Configuration file passed via CLI
+	{
+		try
+		{
+			Configuration.loadConfiguration("config.ini");
+		} catch (IOException e)
+		{
+			LOGGER.severe("Could not load Configuration, reason: " + e.getMessage());
+			System.exit(10);
+		}
 	}
 }