#!/bin/bash  
# Copyright (C) 2026 Cédric Abonnel
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU Affero General Public License for more details.

set -u  
  
. /opt/monitoring/lib/monitoring-lib.sh || exit 3  
  
WARNING=80  
CRITICAL=95  
MOUNTS=("/" "/var" "/home")  
  
log_to_php() {
    local level="$1"
    local event="$2"
    local message="$3"
    shift 3
    # On passe les arguments restants au format JSON ou chaine à PHP
    php -r "
        require '/opt/monitoring/lib/monitoring-lib.php';
        log_event('$level', '$event', '$message', ["$*"]);
    "
}

for mount in "${MOUNTS[@]}"; do
    if ! mountpoint -q "$mount"; then continue; fi

    used_pct="$(df -P "$mount" 2>/dev/null | awk 'NR==2 {gsub("%","",$5); print $5}')"
    
    if [[ ! "$used_pct" =~ ^[0-9]+$ ]]; then
        log_to_php "ERROR" "check_failed" "Impossible de lire l'usage" "'mount=$mount'"
        continue
    fi

    # Détermination du niveau (logique bash simple)
    if [ "$used_pct" -ge "$CRITICAL" ]; then
        log_to_php "CRITICAL" "disk_usage_critical" "Disque plein" "'mount=$mount', 'used=$used_pct%'"
    elif [ "$used_pct" -ge "$WARNING" ]; then
        log_to_php "WARNING" "disk_usage_high" "Disque presque plein" "'mount=$mount', 'used=$used_pct%'"
    else
        log_to_php "INFO" "disk_ok" "Disque OK" "'mount=$mount', 'used=$used_pct%'"
    fi
done