wurm

#!/bin/bash

set -euo pipefail

CONFIG=~/.config/wurmterm/config.json
SERVER_PORT_DEFAULT="8181"

configure() {
    echo "Configuring WurmTerm backend..."

    # Create config dir if missing
    if [ ! -d $(dirname $CONFIG) ]; then
        mkdir -p $(dirname $CONFIG)
    fi 

    while read -p "Server port [$SERVER_PORT_DEFAULT]: " SERVER_PORT; do
        SERVER_PORT="${SERVER_PORT:=$SERVER_PORT_DEFAULT}"
        if [[ $SERVER_PORT =~ ^[0-9]+$ ]]; then
            break
        else
            echo "ERROR: Invalid port. Must be a port number!"
        fi
    done

    while read -s -p "Connect password: " password; do
        echo
        if [[ $password =~ \" ]]; then
            echo "ERROR: Invalid password. Must not contain '\"' !"
        else
            break
        fi
    done
    
    # Poor man JSON editing with poor man JWT secret
    (cat <<EOT
        {
            "server": {
                "host": "localhost",
                "port": $SERVER_PORT
            },
            "client": {
                "auth": "$(echo -n "$password" | base64)"
            }
        }
EOT
) >"$CONFIG"
    echo "Configuration written to '${CONFIG}'."
}

# Start nodejs server if needed, always start in background
start() {
    if ! pgrep -f WurmTermBacken >/dev/null; then
        # Locate source (either in <dirname>/../lib/node_modules or in same dir)
        if [ "$(dirname $0)" = "/usr/local/bin" ]; then
            PREFIX=/usr/local/lib/node_modules/wurmterm-backend

        else
            PREFIX="$(dirname $0)"
        fi
        cd "$PREFIX"

        # Check for client auth configuration
        if [ ! -f "$CONFIG" ]; then
            configure
        fi
    
        (nohup node server.js >/dev/null 2>&1 &)
        echo "WurmTerm backend started."
    else
        echo "Already running."
    fi
}

stop() {
    if pgrep -f WurmTermBacken >/dev/null; then
        echo "Stopping..."
        pkill -fe WurmTermBacken
    else
        echo "Not running."
    fi
}

case "${1-start}" in
    start)
        start
        ;;
    stop)
        stop
        ;;
    configure)
	configure
        stop
        start
	;;
esac