Copy velocity start.sh to bungee directory and adjust for configuration with bungee

bungee/start.sh

@@ -1,7 +1,134 @@
 #!/usr/bin/env bash
-while true
-do
-  ./launch.sh
-  echo sleeping...
-  sleep 3
-done
+
+# How many seconds to sleep before starting the server again, unless it is explicitly specified
+DEFAULT_SLEEP_SECONDS=3
+
+declare -A DEV
+DEV[option]="dev"
+DEV[screen]="steptech"
+DEV[dir]=".."
+
+# Which paper servers can be started with this script
+SERVERS=( DEV )
+
+# Which configuration to apply to the paper servers
+CONFIG="bungee" # Bungeecord
+
+function show_help {
+  local cmd=$0
+
+  echo "Create a start loop for the proxy server and optionally start a number of paper servers with it"
+  echo ""
+  echo "Usage: $cmd [OPTIONS]"
+  echo ""
+  echo "OPTIONS:"
+  {
+    local fmt="  %s\t%s\t%s\n"
+
+    printf "$fmt" "-s" "--sleep" "How many seconds to sleep after stopping the server"
+    printf "$fmt" "-n" "--no-loop" "Don't restart the proxy server once it stopped"
+
+    for server_name in "${SERVERS[@]}"; do
+      declare -n server="$server_name"
+      printf "$fmt" "" "--${server[option]}" "Start the ${server[screen]} server (${server[dir]})"
+    done
+
+    printf "$fmt" "-h" "--help" "Show this message"
+  } | column -t -s $'\t'
+
+  exit
+}
+
+function main {
+
+  local sleep_seconds=$DEFAULT_SLEEP_SECONDS
+  local help=false
+  local loop=true
+  local servers=()
+
+  # Parse arguments
+  local cmd=$0
+  while [[ $# -gt 0 ]]; do
+    local arg=$1
+    case "$arg" in
+      "--sleep" | "-s")
+        sleep_seconds=$2
+        shift 2
+        ;;
+      "--no-loop" | "-n")
+        loop=false
+        shift
+        ;;
+      "--help" | "-h")
+        help=true
+        shift
+        ;;
+      *)
+        local option_found=false
+        for server_name in "${SERVERS[@]}"; do
+          declare -n server="$server_name"
+          if [ "$arg" = "--${server[option]}" ]; then
+            servers+=("$server_name")
+            option_found=true
+          fi
+        done
+
+        if ! $option_found; then
+          err "Unknown argument: $arg"
+        fi
+        shift
+        ;;
+    esac
+  done
+
+  if $help; then
+    show_help "$cmd"
+  fi
+
+  # Start servers
+  for server_name in "${servers[@]}"; do
+    declare -n server="$server_name"
+    # Create server screen if it doesn't exist yet
+    local screen="${server[screen]}"
+    screen -ls | grep -q "$screen" || screen -dmS "$screen"
+    # Start the server
+    screen -S "$screen" -X stuff "cd $(pwd)/${server[dir]}; ./start.sh --no-loop --config \"$CONFIG\" --tmp\n"
+    echo "Started paper server in screen $screen"
+  done
+
+  function cleanup {
+    for server_name in "${servers[@]}"; do
+      declare -n server="$server_name"
+      local screen="${server[screen]}"
+      screen -S "$screen" -X stuff "stop\n"
+      echo "Stopped paper server in screen $screen"
+    done
+
+    exit
+  }
+
+  trap cleanup SIGINT
+
+  while :; do
+    echo "Starting proxy..."
+    ./launch.sh
+
+    $loop || break
+
+    echo "Sleeping for $sleep_seconds seconds..."
+    sleep "$sleep_seconds"
+  done
+
+  cleanup
+}
+
+# Shows an error message and exits the program with code 1
+#
+# Usage: err <msg>
+function err {
+  echo "$1"
+  exit 1
+}
+
+main "$@"
+