#!/bin/bash

MAIN_CLASS=descend.admin.Server
jarFile=Descend-1.10.3.jar

applicationsDeploymentPath=/opt/applications
applicationName=S6_Descend
thisApplicationPath=$applicationsDeploymentPath/$applicationName
libDir=$thisApplicationPath/lib
distDir=$thisApplicationPath/dist
runDir=$thisApplicationPath/run
logFile=$thisApplicationPath/logs/${applicationName}-GENERAL.log
pidFile=$runDir/${applicationName}.pid
jarToLoad=$distDir/$jarFile

JAVA_CMD=/opt/software/jdk1.8.0_241/bin/java
appPort=1235

MAX_MEMORY=2560m
MIN_MEMORY=256m
MIN_PERM=256m
MAX_PERM=512m

keystore=$thisApplicationPath/certs/IMGHTTP_2026.pfx
keypass=$(cat $thisApplicationPath/certs/p12.pass)

NodeIP=85.112.179.22

cd "$thisApplicationPath" || {
    echo "Failed to change directory to $thisApplicationPath"
    exit 1
}


function check_status {
    if [ ! -f "$pidFile" ]; then
        return 1
    fi

    pid=$(tail -1 "$pidFile" 2>/dev/null)
    if [ -z "$pid" ]; then
        return 1
    fi

    if ps -p "$pid" > /dev/null 2>&1; then
        if netstat -an | grep ":$appPort" | grep LISTEN > /dev/null; then
            return 0
        else
            # Process running but port not listening - partial failure
            return 1
        fi
    else
        # Process not running
        return 1
    fi
}

function check_pid {
    if [ ! -f "$pidFile" ]; then
        return 1
    fi

    pid=$(tail -1 "$pidFile" 2>/dev/null)
    if [ -z "$pid" ]; then
        return 1
    fi

    if ps -p "$pid" > /dev/null 2>&1; then
        return 0
    else
        return 1
    fi
}
function stop_process {
    echo "Checking if process is running..."
    check_pid
    if [ $? -eq 0 ]; then
        pid=$(tail -1 "$pidFile")
        echo "Process running with pid $pid, stopping..."
        kill "$pid"
        # Wait for process to die gracefully
        for i in {1..10}; do
            sleep 1
            if ! ps -p "$pid" > /dev/null 2>&1; then
                echo "Process stopped gracefully."
                break
            fi
        done
        # If app doesn't die after normal kill, force kill
        if ps -p "$pid" > /dev/null 2>&1; then
            echo "Process did not stop, sending SIGKILL..."
            kill -9 "$pid"
            sleep 1
        fi
        # Clean up PID file
        > "$pidFile"
        echo "Process killed and PID file cleared."
    else
        echo "Process not running."
    fi
}

function start_process {
    if [ "$2" != "" ]; then
        MAIN_CLASS="$2"
        echo "Using custom main class: $MAIN_CLASS"
    else
        echo "Using default main class: $MAIN_CLASS"
    fi

    echo "Building CLASSPATH..."
    CLASSPATH="$jarToLoad:"
    for file in "$libDir"/*.jar; do
        CLASSPATH="${CLASSPATH}${file}:"
    done

    echo "Starting Descend process..."
    ulimit -n 65535

    nohup $JAVA_CMD \
        -Djavax.net.ssl.keyStoreType=pkcs12 \
        -Djavax.net.ssl.keyStore="$keystore" \
        -Djavax.net.ssl.keyStorePassword="$keypass" \
        -cp "$CLASSPATH" \
        -Xmx$MAX_MEMORY -Xms$MIN_MEMORY \
        -XX:PermSize=$MIN_PERM -XX:MaxPermSize=$MAX_PERM \
        -DAPPNAME=$applicationName \
        -Djava.rmi.server.hostname=$NodeIP \
        -Dcom.sun.management.jmxremote=true \
        -Dcom.sun.management.jmxremote.port=$appPort \
        -Dcom.sun.management.jmxremote.authenticate=false \
        -Dcom.sun.management.jmxremote.ssl=true \
        "$MAIN_CLASS" > "$logFile" 2>&1 &

    echo $! > "$pidFile"
    sleep 5

    check_pid
    if [ $? -eq 0 ]; then
        echo "Process started with pid $(tail -1 $pidFile)"
        nohup curl -u "admincontrol:tuow90MNW" \
            http://servercs6.msgtoolbox.com/smsadm/synced/scendadmin/descendsmpp/activateall.php \
            > /dev/null 2>&1 &
        exit 0
    else
        echo "Process failed to stay up."
        stop_process
        exit 1
    fi
}
#Main
case "$1" in
    start)
        start_process "$@"
        ;;

    stop)
        stop_process
        ;;

    status)
        check_status
        if [ $? -eq 0 ]; then
            echo "Process running with pid $(tail -1 "$pidFile")"
            exit 0
        else
            echo "Process not running"
            exit 3
        fi
        ;;

    restart)
        stop_process
        start_process "$@"
        ;;

    *)
        echo "Usage: $0 {start|stop|status|restart}"
        exit 1
        ;;
esac