#!/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")  
  
for mount in "${MOUNTS[@]}"; do  
    # On vérifie si le point de montage existe avant de tester
    if ! mountpoint -q "$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_error "check_failed" "Impossible de lire l'utilisation disque" "mount=$mount"  
        continue  
    fi  
  
    level="$(threshold_level "$used_pct" "$WARNING" "$CRITICAL")"  
  
    case "$level" in  
        INFO)  
            log_info "disk_ok" "Utilisation disque normale" \
                "mount=$mount" "used_pct=$used_pct" "warning=$WARNING" "critical=$CRITICAL"  
            ;;  
        WARNING)  
            log_warning "disk_usage_high" "Utilisation disque élevée" \
                "mount=$mount" "used_pct=$used_pct" "warning=$WARNING" "critical=$CRITICAL"  
            ;;  
        CRITICAL)  
            log_critical "disk_usage_critical" "Utilisation disque critique" \
                "mount=$mount" "used_pct=$used_pct" "warning=$WARNING" "critical=$CRITICAL"  
            ;;  
    esac  
done  
  
exit_with_status