Implement functionality of config parameter

start.sh

@@ -2,6 +2,10 @@
 
 # THe name of the screen in which the proxy server will run
 PROXY_SCREEN="proxy"
+# The relative path of the velocity proxy server
+VELOCITY_DIR="proxy"
+# The relative path of the bungeecord proxy server
+BUNGEE_DIR="bungee"
 # How many seconds to sleep before starting the server again, unless it is explicitly specified
 DEFAULT_SLEEP_SECONDS=3
 
@@ -11,17 +15,43 @@ function main {
   local help=false
   local sleep_seconds=$DEFAULT_SLEEP_SECONDS
   local config=""
+  local start_proxy=false
+  local tmp=false
 
   local cmd=$0
 
-  # TODO --config is incompatible with --proxy, --bungee and standalone
+  # Parse arguments
   while [ $# -gt 0 ]; do
     local arg=$1
     case "$arg" in
       "--config" | "-c")
-        config=$2 #TODO ensure mode is valid
+        local mode=$2
+        case "$mode" in
+          "proxy")
+            config="velocity"
+            ;;
+          "bungee")
+            config="bungeecord"
+            ;;
+          "standalone")
+            config="standalone"
+            ;;
+          *)
+            err "Invalid mode for --config: $mode"
+            ;;
+        esac
+
+        if $proxy; then
+          err "--config can't be used together with --proxy"
+        elif $bungee; then
+          err "--config can't be used together with --bungee"
+        fi
         shift 2
         ;;
+      "--temp" | "--tmp" | "-t")
+        tmp=true
+        shift
+        ;;
       "--sleep" | "-s")
         sleep_seconds=$2
         shift 2
@@ -30,6 +60,8 @@ function main {
         proxy=true
         if $bungee; then
           err "--proxy can't be used together with --bungee"
+        elif [[ -n $config ]]; then
+          err "--proxy can't be used together with --config"
         fi
         shift
         ;;
@@ -37,6 +69,8 @@ function main {
         bungee=true
         if $proxy; then
           err "--bungee can't be used together with --proxy"
+        elif [[ -n $config ]]; then
+          err "--bungee can't be used together with --config"
         fi
         shift
         ;;
@@ -50,6 +84,20 @@ function main {
     esac
   done
 
+  # Late parsing:
+  if $tmp && [[ -z $config ]]; then
+    err "--temp requires --config parameter"
+  fi
+  if $proxy; then
+    start_proxy=true
+    config="velocity"
+    tmp=true
+  elif $bungee; then
+    start_proxy=true
+    config="bungeecord"
+    tmp=true
+  fi
+
   if $help; then
     echo "Create a start loop for the minecraft server, additionally behind a velocity proxy or bungeecord proxy"
     echo ""
@@ -57,6 +105,7 @@ function main {
     echo ""
     echo "OPTIONS:"
     echo "  -c --config <mode>  How to configure the server. Possible values for mode are: proxy, bungee, standalone"
+    echo "  -t --temp --tmp     Apply the configuration only temporary, while the server is running. Requires --config."
     echo "  -s --sleep <secs>   How many seconds to sleep after the server has stopped before starting it again"
     echo "  -h --help           Show help"
     echo "     --proxy          Start the server behind a velocity proxy"
@@ -64,42 +113,45 @@ function main {
     exit
   fi
 
-  # TODO perform configuration according to config parameter
-
-  if $proxy; then
-    ./configure.sh velocity
-
-    # create proxy screen if it doesn't exist yet
-    screen -ls | grep -q "$PROXY_SCREEN" || screen -dmS "$PROXY_SCREEN"
-    # start the proxy
-    screen -S "$PROXY_SCREEN" -X stuff "cd $(pwd)/proxy; ./launch.sh\n"
-
-    echo "The velocity proxy has been started in the screen '$PROXY_SCREEN'"
-  elif $bungee; then
-    ./configure.sh bungeecord
-
-    # create proxy screen if it doesn't exist yet
-    screen -ls | grep -q "$PROXY_SCREEN" || screen -dmS "$PROXY_SCREEN"
-    # start the proxy
-    screen -S "$PROXY_SCREEN" -X stuff "cd $(pwd)/bungee; ./launch.sh\n"
-
-    echo "The bungeecord proxy has been started in the screen '$PROXY_SCREEN'"
-  else
-    ./configure.sh standalone
+  # Apply configuration
+  local previous_config=""
+  if [[ -n $config ]]; then
+      previous_config=$(./configure.sh "$config" --fetch)
   fi
 
-  trap cleanup SIGINT
+  # Start proxy
+  if $start_proxy; then
+    # create proxy screen if it doesn't exist yet
+    screen -ls | grep -q "$PROXY_SCREEN" || screen -dmS "$PROXY_SCREEN"
+    # start the proxy
+    local proxy_dir="$(pwd)/proxy"
+    case "$config" in
+      "velocity")
+        proxy_dir=$VELOCITY_DIR
+        ;;
+      "bungeecord")
+        proxy_dir=$BUNGEE_DIR
+        ;;
+    esac
+    screen -S "$PROXY_SCREEN" -X stuff "cd $proxy_dir; ./launch.sh\n"
+    echo "The proxy has been started in screen $PROXY_SCREEN"
+  fi
 
-  cleanup() {
-    if $proxy || $bungee; then
+  function cleanup {
+    if $start_proxy; then
       # stop the proxy
       screen -S "$PROXY_SCREEN" -X stuff "end\n"
       echo "The proxy has been stopped"
     fi
+    if $tmp; then
+      ./configure.sh "$previous_config"
+    fi
 
     exit
   }
 
+  trap cleanup SIGINT
+
   while true
   do
     echo starting server...
@@ -109,7 +161,7 @@ function main {
   done
 }
 
-# Shows ans error message and exits the program with code 1
+# Shows an error message and exits the program with code 1
 #
 # Usage: err <msg>
 function err {