From a5351440b20f4f6563db9334406e944efeabdadf Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Ji=C5=99=C3=AD=20=C5=A0tefka?= <jiri.stefka@atlas.cz>
Date: Sat, 25 Feb 2023 08:33:13 +0100
Subject: [PATCH] Move to a more modular architecture

---
 launch.cfg                  |   8 +-
 ms-manager/detect_server.sh |  51 ++++++
 ms-manager/java.sh          |  66 ++++++++
 ms-manager/paper.sh         | 124 ++++++++++++++
 ms-manager/version.sh       |   3 +
 start.sh => msman.sh        | 318 +++++++++++-------------------------
 6 files changed, 344 insertions(+), 226 deletions(-)
 create mode 100644 ms-manager/detect_server.sh
 create mode 100644 ms-manager/java.sh
 create mode 100644 ms-manager/paper.sh
 create mode 100644 ms-manager/version.sh
 rename start.sh => msman.sh (58%)

diff --git a/launch.cfg b/launch.cfg
index 80deba7..6c079a2 100644
--- a/launch.cfg
+++ b/launch.cfg
@@ -13,9 +13,12 @@
 # I recommend backing up your world and settings.                  #
 # I am not responsible for any loss of data                        #
 # !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! #
-select_version="1.19.3"
+
+# Only paper is currently supported
+server_type="paper"
+version="1.19.3"
 # Leave blank to use the latest build (auto updates on every run)
-select_build=""
+build=""
 
 #
 # Memory settings
@@ -51,4 +54,3 @@ java_version_override=false
 # If you want to override them, set the below to true and set the flags you want to use in the java_launchoptions variable
 override_java_flags=false
 java_launchoptions=""
-
diff --git a/ms-manager/detect_server.sh b/ms-manager/detect_server.sh
new file mode 100644
index 0000000..241876a
--- /dev/null
+++ b/ms-manager/detect_server.sh
@@ -0,0 +1,51 @@
+#!/bin/bash
+
+# Detect the server type
+function get_existing_server {
+  if ls paper-*.jar 1> /dev/null 2>&1; then
+    existing_server_type="paper"
+    get_existing_paper
+  # TODO: Add support for other server types
+  # elif ls fabric-*.jar 1> /dev/null 2>&1; then
+  #   existing_server_type="fabric"
+  # elif ls spigot-*.jar 1> /dev/null 2>&1; then
+  #   existing_server_type="spigot"
+  # elif ls craftbukkit-*.jar 1> /dev/null 2>&1; then
+  #   existing_server_type="craftbukkit"
+  # elif ls vanilla-*.jar 1> /dev/null 2>&1; then
+  #   existing_server_type="vanilla"
+  else
+    if ! ls *.jar 1> /dev/null 2>&1; then
+      echo "No server file found."
+      echo
+      echo
+      existing_server_type=false
+      server_file=false
+    else
+      >&2 echo "$(ls *.jar) file was found."
+      >&2 echo "Unknown server type."
+      exit 10
+      # TODO: Ask the user if they want to continue
+    fi
+  fi
+}
+
+# Get existing version and build of paper
+function get_existing_paper {
+  # Get the current server file name
+  server_file=$(basename ./paper-*.jar)
+
+  # Extract the version and build number using cut command
+  current_version=$(echo "$server_file" | cut -d'-' -f2)
+  current_build=$(echo "$server_file" | cut -d'-' -f3)
+  # Remove the rest of the file names
+  current_version="${current_version%-*}"
+  current_build="${current_build%.jar}"
+
+  echo "Current server file: $server_file"
+  echo "  - Version $current_version"
+  echo "  - Build $current_build"
+  echo
+  echo
+}
+
diff --git a/ms-manager/java.sh b/ms-manager/java.sh
new file mode 100644
index 0000000..d5fa6a4
--- /dev/null
+++ b/ms-manager/java.sh
@@ -0,0 +1,66 @@
+#!/bin/bash
+
+# Check if the correct version of Java is installed
+# For version 1.8 to 1.11 use java 8
+# For version 1.12 to 1.16.4 use java 11
+# For version 1.16.5 use java 16
+# For version 1.17.1 to 1.18.1+ use java 17
+function check_java {
+# Check if java is installed
+  if ! command -v java &> /dev/null
+  then
+      >&2 echo "Error: Java is not installed"
+      java_version="0"
+  fi
+
+  # Extract the middle number of the Minecraft version
+  minecraft_middle=$(echo "$version" | awk -F '.' '{print $2}')
+
+  # If java is installed, get the version (the java_version won't be 0)
+  if [[ $java_version != "0" ]]; then
+    # Get the current Java version and extract the build number
+    java_version=$(java -version 2>&1 | awk -F '"' '/version/ {print $2}' | awk -F '.' '{print $1}')
+    echo "Java $java_version is installed."
+  fi
+
+  # Check if the correct version of java is installed
+  if (( 8 <= minecraft_middle && minecraft_middle <= 11 )); then
+    if ! [[ $java_version -eq 8 ]]; then
+      >&2 echo "Java 8 is required for Minecraft version $select_version. Please install Java 8."
+      if [[ $java_version == 0 ]]; then
+        exit 3
+      fi
+      ask_continue
+    fi
+  elif (( 12 <= minecraft_middle && minecraft_middle <= 16 )); then
+    if ! [[ $java_version -eq 11 ]]; then
+      >&2 echo "Java 11 is required for Minecraft version $select_version. Please install Java 11."
+      if [[ $java_version == 0 ]]; then
+        exit 3
+      fi
+      ask_continue
+    fi
+  elif (( minecraft_middle == 17 )); then
+    if ! [[ $java_version -eq 16 ]]; then
+      >&2 echo "Java 16 is required for Minecraft version $select_version. Please install Java 16."
+      if [[ $java_version == 0 ]]; then
+        exit 3
+      fi
+      ask_continue
+    fi
+  elif (( 18 <= minecraft_middle )); then
+    if ! [[ $java_version -eq 17 ]]; then
+      >&2 echo "Java 17 is required for Minecraft version $select_version. Please install Java 17."
+      if [[ $java_version == 0 ]]; then
+        exit 3
+      fi
+      ask_continue
+    fi
+  else
+    >&2 echo "Unsupported Minecraft version $select_version."
+    if [[ $java_version == 0 ]]; then
+      exit 3
+    fi
+    ask_continue
+  fi
+}
diff --git a/ms-manager/paper.sh b/ms-manager/paper.sh
new file mode 100644
index 0000000..9855fe3
--- /dev/null
+++ b/ms-manager/paper.sh
@@ -0,0 +1,124 @@
+#!/bin/bash
+
+# API URL
+api_url="https://api.papermc.io/v2/projects/paper/versions/$version/builds"
+
+# Check if the version and build are valid
+function check_version_valid {
+  if curl -s "$api_url" | grep -q '{"error":"Version not found."}'; then
+    >&2 echo "Error: Invalid version selected: $version"
+    exit 2
+  else
+    # Check if selected build exists
+    if [ ! -z "$build" ]; then
+      # WARNING: Check if the shortened versin works
+      # if curl -Is "https://api.papermc.io/v2/projects/paper/versions/$version/builds/$build/downloads/paper-$version-$build.jar" | grep "HTTP/2 404" >/dev/null; then
+      if curl -Is "$api_url/$build/downloads/paper-$version-$build.jar" | grep "HTTP/2 404" >/dev/null; then
+        >&2 echo "Error: Invalid build selected: $build"
+        exit 2
+      fi
+    fi
+  fi
+}
+
+# Download server set by $version and $download_build
+function download_server {
+  # Download the server
+  echo "Downloading PaperMC server..."
+  echo "  - Version $version"
+  echo "  - Build $download_build"
+  curl "https://api.papermc.io/v2/projects/paper/versions/$version/builds/$download_build/downloads/paper-$version-$download_build.jar" -o "./paper-$version-$download_build.jar"
+  echo "Download complete."
+}
+
+# Check if up to date
+function check_updates {
+  if [[ $server_file == false ]]; then
+    download_build=$latest_build
+    update_version=true
+    update_build=true
+  fi
+
+  # Check if $build is empty
+  if [[ -z $build ]]; then
+    # Check if the current version is the same as the one selected
+    if [[ $current_version == $version ]]; then
+      # Check if the current build is the same as the one selected
+      if [[ $current_build == $latest_build ]]; then
+        echo "Server is up to date."
+      else
+        echo "Server is not up to date."
+        download_build=$latest_build
+        update_build=true
+      fi
+    else
+      # Check if $server_file is false
+      if [[ $server_file != false ]]; then
+        ask_version_differs
+        echo "Server is not up to date."
+        download_build=$latest_build
+        update_version=true
+      fi
+    fi
+  else
+    # Check if the current version is the same as the one selected
+    if [[ $current_version == $version ]]; then
+      # Check if the current build is the same as the one selected
+      if [[ $current_build == $build ]]; then
+        echo "Server is up to date."
+      else
+        echo "Server is not up to date."
+        download_build=$build
+        update_build=true
+      fi
+    else
+      # Check if $server_file is false
+      if [[ $server_file != false ]]; then
+        ask_version_differs
+        echo "Server is not up to date."
+        download_build=$build
+        update_version=true
+      fi
+    fi
+  fi
+}
+
+# Get the latest build number
+function get_latest_build {
+    # Get the latest build number
+    latest_build=$(curl -s $api_url | jq '.builds[-1].build')
+}
+
+# Check for updates
+function check_and_update {
+  if [[ $server_file == false ]]; then
+    download_build=$latest_build
+    update_version=true
+    update_build=true
+  else
+    echo Checking for updates...
+  fi
+
+  # Get the latest build number
+  get_latest_build
+
+  # Check if the current version is up to date
+  check_updates
+
+  # Check if $build_update is true or $version_update is true
+  if [[ $update_build == true ]] || [[ $update_version == true ]]; then
+    if [[ $server_file != false ]]; then
+      old_server_file=$server_file
+      server_file="paper-$version-$download_build.jar"
+      download_server
+      # Delete the old server file
+      delete_old_server
+    else
+      server_file="paper-$version-$download_build.jar"
+      download_server
+    fi
+  fi
+  echo
+  echo
+}
+
diff --git a/ms-manager/version.sh b/ms-manager/version.sh
new file mode 100644
index 0000000..6e6e039
--- /dev/null
+++ b/ms-manager/version.sh
@@ -0,0 +1,3 @@
+#!/bin/bash
+
+CURRENT_SCRIPTS_VERSION="v1.0.3"
diff --git a/start.sh b/msman.sh
similarity index 58%
rename from start.sh
rename to msman.sh
index d1479d8..ef3c9d7 100755
--- a/start.sh
+++ b/msman.sh
@@ -7,7 +7,7 @@
 #                            and acknowledge the original script and author.                                #
 #############################################################################################################
 
-CURRENT_VERSION="v1.0.3"
+CURRENT_SCRIPT_VERSION="v1.0.3"
 
 # --------------------------------------------------
 # You shouldn't need to change anything in this file
@@ -16,7 +16,7 @@ CURRENT_VERSION="v1.0.3"
 #
 # The url of the script (used for updating)
 REPO_OWNER="jiriks74"
-REPO_NAME="start_papermc.sh"
+REPO_NAME="msman.sh"
 
 # Check for dependencies
 function check_dependencies {
@@ -40,21 +40,12 @@ function check_dependencies {
       echo "Error: awk is not installed"
       exit 1
   fi
-}
 
-# Check if the version and build are valid
-function check_version_valid {
-  if curl -s "$api_url" | grep -q '{"error":"Version not found."}'; then
-    echo "Error: Invalid version selected: $select_version"
-    exit 2
-  else
-    # Check if selected build exists
-    if [ ! -z "$select_build" ]; then
-      if curl -Is "https://api.papermc.io/v2/projects/paper/versions/$select_version/builds/$select_build/downloads/paper-$select_version-$select_build.jar" | grep "HTTP/2 404" >/dev/null; then
-        echo "Error: Invalid build selected: $select_build"
-        exit 2
-      fi
-    fi
+  # Check if screen is installed
+  if ! command -v screen &> /dev/null
+  then
+      echo "Error: screen is not installed"
+      exit 1
   fi
 }
 
@@ -72,112 +63,6 @@ function ask_continue {
   fi
 }
 
-# Check if the correct version of Java is installed
-# For version 1.8 to 1.11 use java 8
-# For version 1.12 to 1.16.4 use java 11
-# For version 1.16.5 use java 16
-# For version 1.17.1 to 1.18.1+ use java 17
-function check_java {
-# Check if java is installed
-  if ! command -v java &> /dev/null
-  then
-      echo "Error: Java is not installed"
-      java_version="0"
-  fi
-
-  # Extract the middle number of the Minecraft version
-  minecraft_middle=$(echo "$select_version" | awk -F '.' '{print $2}')
-
-  # If java is installed, get the version (the java_version won't be 0)
-  if [[ $java_version != "0" ]]; then
-    # Get the current Java version and extract the build number
-    java_version=$(java -version 2>&1 | awk -F '"' '/version/ {print $2}' | awk -F '.' '{print $1}')
-  fi
-
-  # Check if the correct version of java is installed
-  if (( 8 <= minecraft_middle && minecraft_middle <= 11 )); then
-    if ! [[ $java_version -eq 8 ]]; then
-      echo "Java $java_version is installed."
-      echo "Java 8 is required for Minecraft version $select_version. Please install Java 8."
-      if [[ $java_version == 0 ]]; then
-        exit 3
-      fi
-      ask_continue
-    fi
-  elif (( 12 <= minecraft_middle && minecraft_middle <= 16 )); then
-    if ! [[ $java_version -eq 11 ]]; then
-      echo "Java $java_version is installed."
-      echo "Java 11 is required for Minecraft version $select_version. Please install Java 11."
-      if [[ $java_version == 0 ]]; then
-        exit 3
-      fi
-      ask_continue
-    fi
-  elif (( minecraft_middle == 17 )); then
-    if ! [[ $java_version -eq 16 ]]; then
-      echo "Java $java_version is installed."
-      echo "Java 16 is required for Minecraft version $select_version. Please install Java 16."
-      if [[ $java_version == 0 ]]; then
-        exit 3
-      fi
-      ask_continue
-    fi
-  elif (( 18 <= minecraft_middle )); then
-    if ! [[ $java_version -eq 17 ]]; then
-      echo "Java $java_version is installed."
-      echo "Java 17 is required for Minecraft version $select_version. Please install Java 17."
-      if [[ $java_version == 0 ]]; then
-        exit 3
-      fi
-      ask_continue
-    fi
-  else
-    echo "Unsupported Minecraft version $select_version."
-    if [[ $java_version == 0 ]]; then
-      exit 3
-    fi
-    ask_continue
-  fi
-}
-
-# Get existing version and build
-function get_existing_version {
-  if ls paper-*.jar 1> /dev/null 2>&1; then
-    # Get the current server file name
-    server_file=$(basename ./paper-*.jar)
-
-    # Extract the version and build number using cut command
-    current_version=$(echo "$server_file" | cut -d'-' -f2)
-    current_build=$(echo "$server_file" | cut -d'-' -f3)
-    current_version="${current_version%-*}"
-    current_build="${current_build%.jar}"
-    echo "Current server file: $server_file"
-    echo "  - Version $current_version"
-    echo "  - Build $current_build"
-  else
-    echo "No old server file found."
-    server_file=false
-  fi
-}
-
-# Download server set by $select_version and $download_build
-function download_server {
-  # Download the server
-  echo "Downloading PaperMC server..."
-  echo "  - Version $select_version"
-  echo "  - Build $download_build"
-  curl -s "https://api.papermc.io/v2/projects/paper/versions/$select_version/builds/$download_build/downloads/paper-$select_version-$download_build.jar" -o "./paper-$select_version-$download_build.jar"
-  echo "Download complete."
-}
-
-# Delete old server file with name $old_server_file
-function delete_old_server {
-  # Delete the old server file
-  echo "Deleting old server file $server_file..."
-  rm "$old_server_file"
-  echo "Old server file deleted."
-}
-
 # Set arguments for java
 function set_java_args {
   # Check if $override_flags is not true
@@ -205,12 +90,12 @@ function set_java_args {
 function ask_version_differs {
   echo
   echo
-  echo "The server version differs from the one you selected."
+  echo "The current server version differs from the one you selected."
   echo "The server version is $current_version and the selected version is $select_version."
   echo "Do you want to update the server version?"
   echo "This can cause many issues if you don't know what you are doing."
   echo
-  echo "I am not responsible for any damage caused by updating the server version."
+  echo "I am not responsible for any data loss caused by updating the server version."
   echo
   echo "You have 15 seconds to respond, or the script will exit"
   read -t 15 -p "Do you want to update the server version? [y/N] " version_differs
@@ -231,87 +116,32 @@ function ask_version_differs {
   fi
 }
 
-# Check if up to date
-function check_up_to_date {
-  if [[ $server_file == false ]]; then
-    download_build=$latest_build
-    update_version=true
-    update_build=true
+# Ask if the new server version differs from the old one
+function ask_server_differs {
+  echo
+  echo
+  echo "The current server type differs from the one you selected."
+  echo "The current server type is $current_server_type and the selected version is $server_type."
+  echo "Do you want to change server types?"
+  echo "This can cause many issues if you don't know what you are doing."
+  echo
+  echo "I am not responsible for any data loss caused by changing server types."
+  echo
+  echo "You have 15 seconds to respond, or the script will exit"
+  read -t 15 -p "Do you want to change the server version type? [y/N] " version_differs
+
+  if [ "$version_differs" != "y" ] && [ "$version_differs" != "Y" ]; then
+    echo "Server version not updated."
+    echo "To start the server again with the current version, change the version in the config to $current_version."
+    exit 4
   fi
 
-  # Check if $select_build is empty
-  if [[ -z $select_build ]]; then
-    # Check if the current version is the same as the one selected
-    if [[ $current_version == $select_version ]]; then
-      # Check if the current build is the same as the one selected
-      if [[ $current_build == $latest_build ]]; then
-        echo "Server is up to date."
-      else
-        echo "Server is not up to date."
-        download_build=$latest_build
-        update_build=true
-      fi
-    else
-      # Check if $server_file is false
-      if [[ $server_file != false ]]; then
-        ask_version_differs
-        echo "Server is not up to date."
-        download_build=$latest_build
-        update_version=true
-      fi
-    fi
-  else
-    # Check if the current version is the same as the one selected
-    if [[ $current_version == $select_version ]]; then
-      # Check if the current build is the same as the one selected
-      if [[ $current_build == $select_build ]]; then
-        echo "Server is up to date."
-      else
-        echo "Server is not up to date."
-        download_build=$select_build
-        update_build=true
-      fi
-    else
-      # Check if $server_file is false
-      if [[ $server_file != false ]]; then
-        ask_version_differs
-        echo "Server is not up to date."
-        download_build=$select_build
-        update_version=true
-      fi
-    fi
-  fi
-}
-
-# Get the latest build number
-function get_latest_build {
-    # Get the latest build number
-    latest_build=$(curl -s $api_url | jq '.builds[-1].build')
-}
-
-# Check for updates
-function check_and_update {
-  # Get current version and build
-  get_existing_version
-
-  echo Checking for updates...
-  # Get the latest build number
-  get_latest_build
-
-  # Check if the current version is up to date
-  check_up_to_date
-
-  # Check if $build_update is true or $version_update is true
-  if [[ $update_build == true ]] || [[ $update_version == true ]]; then
-    if [[ $server_file != false ]]; then
-      old_server_file=$server_file
-      server_file="paper-$select_version-$download_build.jar"
-      download_server 
-      # Delete the old server file
-      delete_old_server
-    else
-      server_file="paper-$select_version-$download_build.jar"
-      download_server
+  if [ "$version_differs" == "y" ] || [ "$version_differs" == "Y" ]; then
+    read -t 15 -p "Are you sure you want to update the server version? [y/N] " version_differs
+    if [ "$version_differs" != "y" ] && [ "$version_differs" != "Y" ]; then
+      echo "Server version not updated."
+      echo "To start the server again with the current version, change the version in the config to $current_version."
+      exit 4
     fi
   fi
 }
@@ -319,8 +149,6 @@ function check_and_update {
 # Accept EULA
 function accept_eula {
   if test "$(cat eula.txt 2>/dev/null)" != "eula=true"; then
-    echo
-    echo
     echo "'eula.txt' does not exist or EULA is not accepted"
     echo "You have to accept the Minecraft EULA to run the server"
     echo "By entering 'y' you are indicating your agreement to Minecraft's EULA (https://aka.ms/MinecraftEULA)."
@@ -337,6 +165,8 @@ function accept_eula {
       echo
       echo
       echo "EULA accepted"
+      echo
+      echo
     else
       echo
       echo
@@ -349,8 +179,6 @@ function accept_eula {
 
 # Launch the server
 function launch_server {
-  echo
-  echo
   echo "Starting the server..."
   echo
   echo
@@ -406,14 +234,14 @@ function check_self_update {
     LATEST_VERSION=$(echo $response | jq -r ".tag_name")
 
     # Compare the current version with the latest version
-    if [[ "$CURRENT_VERSION" != "$LATEST_VERSION" ]]; then
+    if [[ "$CURRENT_SCRIPT_VERSION" != "$LATEST_VERSION" ]]; then
       echo "An update is available!"
-      echo "Current version: $CURRENT_VERSION"
+      echo "Current version: $CURRENT_SCRIPT_VERSION"
       echo "Latest version: $LATEST_VERSION"
       echo
       echo "The script will continue without updating in 15 seconds."
       echo "If you decide to update it is your responsibility to check the release notes for any breaking changes."
-      read -t 15 -p "Do you want to read the release notes? [y/N]"
+      read -t 15 -p "Do you want to update and read the release notes? [y/N]"
       if [ "$REPLY" == "y" ] || [ "$REPLY" == "Y" ]; then
         # Extract the release notes from the response
         RELEASE_NOTES=$(echo "$response" | jq -r ".body")
@@ -433,6 +261,8 @@ function check_self_update {
           return
         fi
       fi
+      echo
+      echo
     fi
   fi
 }
@@ -454,19 +284,26 @@ function load_config {
       read -p "Do you want to edit the config file? [y/N] " edit_config
       if [ "$edit_config" == "y" ] || [ "$edit_config" == "Y" ]; then
         if [ -z "$EDITOR" ]; then
-          echo "EDITOR is not set."
-          echo "Open 'launch.cfg' manually."
+          >&2 echo "EDITOR is not set."
+          >&2 echo "Open 'launch.cfg' manually."
           echo "Exiting..."
           exit 1
         else
+          # Check if $EDITOR is installed
+          if ! command -v $EDITOR &> /dev/null; then
+            >&2 echo "$EDITOR is not installed."
+            >&2 echo "Open 'launch.cfg' manually."
+            echo "Exiting..."
+            exit 1
+          fi
           echo "Opening the config file in $EDITOR..."
           $EDITOR launch.cfg
         fi
       fi
     else
-      echo "Failed to download the default config file."
-      echo "Go to the GitHub repository for more information:"
-      echo "https://github.com/$REPO_OWNER/$REPO_NAME"
+      >&2 echo "Failed to download the default config file."
+      >&2 echo "Go to the GitHub repository for more information:"
+      >&2 echo "https://github.com/$REPO_OWNER/$REPO_NAME"
       echo "Exiting..."
       exit 1
     fi
@@ -474,8 +311,36 @@ function load_config {
 
   # Load config
   source launch.cfg
-  # API URL
-  api_url="https://api.papermc.io/v2/projects/paper/versions/$select_version/builds"
+}
+
+# Delete old server file with name $old_server_file
+function delete_old_server {
+  # Delete the old server file
+  echo "Deleting old server file $server_file..."
+  rm "$old_server_file"
+  echo "Old server file deleted."
+}
+
+# Load the rest of the script
+function load_script {
+  # TODO: Check if the script files exist
+  source "./ms-manager/detect_server.sh"
+  source "./ms-manager/java.sh"
+
+  # Load the correct script
+  if [[ $server_type == "paper" ]]; then
+    source ".//ms-manager/paper.sh"
+  # elif [[ $server_type == "vanilla" ]]; then
+  #   source "$cwd/ms-manager/vanilla.sh"
+  # elif [[ $server_type == "forge" ]]; then
+  #   source "$cwd/ms-manager/forge.sh"
+  # elif [[ $server_type == "fabric" ]]; then
+  #   source "$cwd/ms-manager/fabric.sh"
+  else
+    >&2 echo "Unknown server type."
+    echo "Exiting..."
+    exit 1
+  fi
 }
 
 # Main function
@@ -485,14 +350,21 @@ function main {
   
   # Load config
   load_config
+
+  # Load the rest of the script
+  # Get the current server file, version and build
+  load_script
   
-  if [[ $check_self_update == true ]]; then
+  if [[ $check_for_script_updates == true ]]; then
     # Check for script updates
     check_self_update
   else
     echo "Skipping script update check."
   fi
 
+  # Gets the installed server info
+  get_existing_server
+
   # Check if the version and build are valid
   check_version_valid
 
@@ -510,16 +382,16 @@ function main {
 }
 
 # Check for updates on GitHub
-if [[ "$1" == "--redownload" ]]; then
+if [[ "$1" == "--redownload" ]] || [[ "$1" == "-r" ]]; then
   self_update
-fi
-if [[ "$1" == "--help" ]]; then
+# TODO: Add `--edit-config` option
+elif [[ "$1" == "--help" ]] || [[ "$1" == "-h" ]]; then
   echo "Usage: ./script.sh [OPTION]"
   echo "Starts the Minecraft server."
   echo
   echo "Options:"
-  echo "  --redownload  Redownloads the script from GitHub."
-  echo "  --help        Show this help message."
+  echo "  -r, --redownload  Redownloads the script from GitHub."
+  echo "  -h, --help        Show this help message."
   echo
   echo "To change the settings of the script, edit the 'launch.cfg' file."
   echo "If the file does not exist, it will be downloaded automatically when the script is run and you will be asked if you want to edit it."