#!/bin/bash
# Deploy watcher - run with sudo, triggers on file creation
# Usage: sudo ./deploy-watcher

TRIGGER_FILE="/space/work/pkgs/libreplan/migrate/trigger"
LOG_FILE="/space/work/pkgs/libreplan/migrate/localhost.log"
CATALINA_LOG="/space/work/pkgs/libreplan/migrate/catalina.out"

echo "Watcher started. Waiting for trigger file: $TRIGGER_FILE"

while true; do
    if [ -f "$TRIGGER_FILE" ]; then
        WAIT_SECS=$(cat "$TRIGGER_FILE" 2>/dev/null || echo 15)
        rm -f "$TRIGGER_FILE"

        echo "=== $(date): Triggered with ${WAIT_SECS}s wait ==="

        echo "Stopping Tomcat..."
        systemctl stop tomcat9

        echo "Removing old deployment..."
        rm -rf /opt/tomcat/webapps/libreplan*
        rm -rf /opt/tomcat/work/Catalina/localhost/libreplan
        rm -f /opt/tomcat/work/Catalina/localhost/libreplan/SESSIONS.ser

        echo "Deploying new WAR..."
        cp /space/work/pkgs/libreplan/libreplan-webapp/target/libreplan-webapp.war /opt/tomcat/webapps/libreplan.war

        echo "Clearing logs..."
        truncate -s 0 /opt/tomcat/logs/catalina.out
        rm -f /opt/tomcat/logs/localhost.*.log

        echo "Starting Tomcat..."
        systemctl start tomcat9

        echo "Waiting ${WAIT_SECS}s..."
        sleep $WAIT_SECS

        echo "Copying logs..."
        CATALINA_DATE_LOG=$(ls -t /opt/tomcat/logs/catalina.*.log 2>/dev/null | head -1)
        if [ -n "$CATALINA_DATE_LOG" ]; then
            cp "$CATALINA_DATE_LOG" "$CATALINA_LOG"
            chmod 644 "$CATALINA_LOG"
        fi

        LOCALHOST_LOG=$(ls -t /opt/tomcat/logs/localhost.*.log 2>/dev/null | head -1)
        if [ -n "$LOCALHOST_LOG" ]; then
            cp "$LOCALHOST_LOG" "$LOG_FILE"
            chmod 644 "$LOG_FILE"
        fi

        echo "=== Deploy cycle complete ==="
    fi
    sleep 1
done