1 files changed, 125 insertions, 0 deletions
diff --git a/sources/shared/Main.java b/sources/shared/Main.java
new file mode 100644
index 0000000..37ebc03
--- /dev/null
+++ b/sources/shared/Main.java
@@ -0,0 +1,125 @@
+package shared;
+
+import java.io.*;
+
+import javax.swing.JFrame;
+
+import server.*;
+
+import client.*;
+
+/**
+ * This class contains the static main method to start the program from.
+ * This class is also responsible for handling info ans status messages and
+ * the logging option of those messages.
+ * @author buetow
+ *
+ */
+public final class Main {
+  private static NetCalendarClient netCalendarClient = null;
+  private static BufferedWriter bufferedLogfileWriter = null;
+
+  /**
+   * This method is the start point of the whole program. Its initializing the static Config object
+   * and starts a calendar server and/or a calendar client thread depending on the "server_run" and
+   * "client_run" configuration options.
+   * @param args Specifies the program arguments (not used yet by the program)
+   */
+  public static void main(String[] args) {
+    Config.initialize(args);
+
+    try {
+      FileWriter fileWriter = new FileWriter(Config.getStringValue("logfile"));
+      bufferedLogfileWriter = new BufferedWriter(fileWriter);
+
+    } catch (IOException e) {
+      infoMessage("Error: Could not open logfile: " + e.getMessage());
+    }
+
+
+    if (Config.getBooleanValue("server_run")) {
+      new NetCalendarServer(
+        Config.getIntValue("server_port"),
+        Config.getStringValue("server_database_dir"));
+    }
+
+    if (Config.getBooleanValue("client_run")) {
+      new Thread(new SplashScreen()).start();
+      //Make sure we have nice window decorations.
+      JFrame.setDefaultLookAndFeelDecorated(true);
+      netCalendarClient = new NetCalendarClient();
+    }
+  }
+
+  /**
+   * All info messages of the calendar client and the calendar server go through this method.
+   * They are not using System.out.* directly.
+   * @param sMessage Specifies the program info message.
+   */
+  public static void infoMessage(String sMessage) {
+    // Later: Add logging to a logfile!
+    System.out.println(sMessage);
+    logMessage(sMessage);
+  }
+
+  /**
+   * This method is for various messages. All messages will show up in the status bar of the client's main window.
+   * If there is no main window, the infoMessage method will be used instead.
+   * @param sMessage Specifies the message to be displayed in the status bar.
+   */
+  public static void statusMessage(String sMessage) {
+    if (netCalendarClient != null)
+      netCalendarClient.statusMessage(sMessage);
+    else
+      infoMessage(sMessage);
+  }
+
+  /**
+   * This method writes a specific message string into a logfile which is specified in the config.txt.
+   * @param sMessage Specified the message string to write into the logfile.
+   */
+  private static void logMessage(String sMessage) {
+    if (bufferedLogfileWriter != null) {
+      try {
+        bufferedLogfileWriter.write(sMessage + "\n");
+        // bufferedLogfileWriter.flush();
+
+      } catch (IOException e) {
+        Main.infoMessage("Error: Could not write to logfile: " + e.toString());
+      }
+    }
+  }
+
+  /**
+   * This method is called thenever the server or the client process wants to exit.
+   * @param iCode Specifies the exit code to use for the System.exit call.
+   */
+  public static void exit(int iCode) {
+    infoMessage("Shutting down the current process");
+
+    try {
+      bufferedLogfileWriter.close();
+    } catch (IOException e) {
+      System.err.println("Error: Could not close logfile: " + e.toString());
+    }
+
+    System.exit(iCode);
+  }
+
+
+  /**
+   * This method executes an external program.
+   * @param sCommand Specifies the command string to execute.
+   */
+  public static void execExternalCommand(String sCommand) {
+    if (sCommand.equals("none") || sCommand.equals(""))
+      return;
+
+    try {
+      Runtime.getRuntime().exec(sCommand);
+
+    } catch (IOException e) {
+      Main.infoMessage("Error while executing external command: " + e.getMessage());
+    }
+  }
+}