#!/bin/bash

serverip=$($(which ifconfig) | grep -Eo 'inet (addr:)?([0-9]*\.){3}[0-9]*' | grep -Eo '([0-9]*\.){3}[0-9]*' | grep -v '127.0.0.1' | head -1)

mkdir -p /root/.bigscoots/failover

if [ ! -f /root/.bigscoots/failover/failover.servers ]; then
  bash /bigscoots/general/slack.sh "#failovers" ":warning: $(hostname) - ${serverip} - File Sync - No Failover servers defined in /root/.bigscoots/failover/failover.servers"
  exit
fi

# Define the paths that need to be synced with a placeholder for domain if needed
sync_domain_paths=(
    "/home/nginx/domains/{domain}/"
    "/usr/local/nginx/conf/conf.d/{domain}.conf"
    "/usr/local/nginx/conf/conf.d/{domain}.ssl.conf"
    "/usr/local/nginx/conf/wpincludes/{domain}/"
    "/usr/local/nginx/conf/ssl/{domain}/"
)

sync_global_paths=(
    "/etc/pure-ftpd/"
    "/home/nginx/.bashrc"
    "/root/.acme.sh/"
    "/usr/local/lib/php.ini"
    "/etc/centminmod/php.d/a_customphp.ini"
)

# Add dynamically expanded paths for multiphp
for multiphp_ini in /etc/opt/remi/*/php.d/zzz_customphp.ini /etc/opt/remi/*/php-fpm.d/*; do
    if [ -f "$multiphp_ini" ]; then
        sync_global_paths+=("$multiphp_ini")
    fi
done

# Iterate over each server
while read -r server; do
    # Sync global paths (once per server)
    for path in "${sync_global_paths[@]}"; do
        destination="${server}:${path}"

        # Get the current epoch time
        epochtime=$(date +%s)

        if ! rsync -ah --delete --exclude .user.ini --exclude log/access.log* --log-file="/root/.bigscoots/failover/syncto${server}.log" -e "ssh -p 2222" "${path}" "${destination}"; then
            # Copy the log file to a failed log with the epoch time appended
            cp "/root/.bigscoots/failover/syncto${server}.log" "/root/.bigscoots/failover/syncto${server}.${epochtime}.failed.log"
            
            # Send the Slack notification
            bash /bigscoots/general/slack.sh "#failovers" ":warning: $(hostname) - ${serverip} - File Sync - Issue with syncing files from ${path} to ${destination}"

            # Send the email notification if contact emails exist
            if [ -s /root/.bigscoots/failover/contact.emails ]; then
                mail -s "$(hostname) - ${serverip} - File Sync - Issue with syncing files from ${path} to ${destination}" $(cat /root/.bigscoots/failover/contact.emails | tr '\n' ',') < /root/.bigscoots/failover/syncto"${server}".log
                rm -f /root/.bigscoots/failover/syncto"${server}".log
            fi
        fi
    done

    # Sync domain-specific paths (once per domain per server)
    for domain in $(ls -1 /home/nginx/domains/); do
        for path in "${sync_domain_paths[@]}"; do
            # Replace {domain} placeholder with the actual domain name
            source_path="${path/\{domain\}/$domain}"

            # Ensure that the destination does not duplicate the domain
            destination="${server}:${path/\{domain\}/$domain}"

            if ! rsync -ah --delete --exclude .user.ini --exclude log/access.log* --log-file="/root/.bigscoots/failover/syncto${server}.log" -e "ssh -p 2222" "${source_path}" "${destination}"; then
                bash /bigscoots/general/slack.sh "#failovers" ":warning: $(hostname) - ${serverip} - File Sync - Issue with syncing files from ${source_path} to ${destination}"
                if [ -s /root/.bigscoots/failover/contact.emails ]; then
                    mail -s "$(hostname) - ${serverip} - File Sync - Issue with syncing files from ${source_path} to ${destination}" $(cat /root/.bigscoots/failover/contact.emails | tr '\n' ',') < /root/.bigscoots/failover/syncto"${server}".log
                    rm -f /root/.bigscoots/failover/syncto"${server}".log
                fi
            fi
        done
    done
done < /root/.bigscoots/failover/failover.servers