#!/bin/bash
#
# Copyright (C) 2018,2019 Didier Clermonté <dclermonte@april.org>
# Copyright (C) 2018,2019 Christian Pierre Momon <christian.momon@devinsy.fr>
#
# This file is part of date.chapril.org.
#
# This script 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.
#
# You should have received a copy of the GNU Affero General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.
#
# ============================================
help()
{
    echo "Usage:"
    echo "    $(basename "$0") -h                display help"
    echo "    $(basename "$0")                   analyse current month"
    echo "    $(basename "$0") -p                analyse preceding month"
    echo "    $(basename "$0") month_number year analyse this month"
}

generateReport()
{
    local monthEnglish="$1"
    local month="$2"
    local year="$3"
    echo -e "================================================================="
    echo
    creationCount=$(grep "CREATE_POLL" /var/www/date.chapril.org/admin/stdout.log | grep -c "$month")
    echo "Nombre de sondages créés              = $creationCount"

    mailCount=$(grep "CREATE_POLL" /var/www/date.chapril.org/admin/stdout.log | grep   "$month"|cut -d',' -f5|sort|uniq|wc -l)
    echo "Nombre d'adresses mail différentes    = $mailCount"

    deletionCount=$(grep "DELETE_POLL" /var/www/date.chapril.org/admin/stdout.log | grep -c "$month")
    echo "Nombre de sondages supprimés          = $deletionCount"

    pollCount=$(echo "SELECT count(*) from fd_poll;"| mysql --silent -u root date_chapril_org_db)
    echo "Nombre total de sondages dans la base = $pollCount"

    purgeCount=$(grep "EXPIRATION_SUCCESS" /var/www/date.chapril.org/admin/stdout.log | grep -c "$month")
    echo "Nombre de sondages purgés             = $purgeCount"

    pollExpiredCount=$(echo "SELECT count(*) from fd_poll where end_date > now();"| mysql --silent -u root date_chapril_org_db)
    echo "Nombre de sondages expirés            = $pollExpiredCount"

    httpRequestCount=$(zgrep "$monthEnglish" /var/log/apache2/date.chapril.org/date.chapril.org-acces.log*|grep -c "$year")
    echo "Nombre total de requêtes http         = $httpRequestCount"

    trueHttpRequestCount=$(zgrep "$monthEnglish" /var/log/apache2/date.chapril.org/date.chapril.org-acces.log*|grep "$year"|grep -vi bot|grep -c -v check)
    echo "Nombre de vraies requêtes http        = $trueHttpRequestCount"
    
    botRequestCount=$(zgrep "$monthEnglish" /var/log/apache2/date.chapril.org/date.chapril.org-acces.log*|grep "$year"|grep -i bot|grep -c -v check)
    echo "Nombre de requêtes bot                = $botRequestCount"

    errorRequestCount=$(zgrep "$monthEnglish" /var/log/apache2/date.chapril.org/date.chapril.org-error.log*|grep -c "$year")
    echo "Nombre de requêtes http en erreur     = $errorRequestCount"

    databaseSize=$(mysql --silent -u root date_chapril_org_db -e "SELECT round(sum(data_length+index_length)/1024/1024,3) AS 'Size (MB)' FROM information_schema.tables WHERE table_schema='date_chapril_org_db';" )
    echo "Taille de la base de données          = $databaseSize MB"

    ipTotalCount=$(zgrep -h "$monthEnglish" /var/log/apache2/date.chapril.org/date.chapril.org-acces.log*|grep "$year"|grep -vi bot|grep -v check_http|cut -d' ' -f1|sort|uniq |wc -l)
    echo "Nombre d'ip visiteuses                = $ipTotalCount"

    ipUtilCount=$(zgrep -h "$monthEnglish" /var/log/apache2/date.chapril.org/date.chapril.org-acces.log*|grep "$year"|grep -vi bot|grep -v check_http|grep -v "GET /fonts/"|grep -v "GET \(/css/\|/images/\|/ \)"|grep -v "GET /js/"|grep -v "HTTP/1.0\" 404"|cut -d' ' -f1|sort|uniq| wc -l )
    echo "Nombre d'ip utilisatrices             = $ipUtilCount"

    echo -e "\n"
    
}    
# ============================================
echo
if [ "$#" = 1 ] && [ "$1" = "-h" ]; then
    help
elif [ "$#" = 1 ] && [ "$1" = "-p" ]; then
    if   [ "$(date +%m)" -gt 1 ]; then
	precedingMonth="$(($(date +%m)-1))"
	year="$(date +%Y)"
	if [ $precedingMonth -lt 10 ]; then
	    month="${year}0$precedingMonth"
	else
	    month="$year$precedingMonth"
	fi
    else
	precedingMonth=12
	year="$(($(date +%Y)-1))"
    fi
    monthEnglish=$(LANG=en_EN.UTF-8;date -d $year-$precedingMonth-01 +%b)
    echo -e "Rapport d'activité du service date.chapril.org du mois $monthEnglish $year"
    generateReport "$monthEnglish" "$month" "$year"
elif [ "$#" -eq 2 ]; then
    if ! (let "$1") 2>/dev/null; then
	echo -e "Le mois doit être numérique."
	help
    elif ([ "$1" -lt 1 ] || [ "$1" -gt 12 ]); then
	echo -e "Numéro du mois non valable $1."
	help
    elif ! (let "$2") 2>/dev/null; then
	echo -e "L'année doit être numérique."
	help
    elif  [ "$2" -lt 2018 ] || [ "$2" -gt "$(date +%Y)" ]; then
	echo -e "Année non valable $2."
	help
    elif  [ "$2" -le 2017 ] || [ "$2" -ge $(($(date +%Y)+1)) ] ; then
	echo -e "Pas de données pour ce mois."
	help
    else
	if [ "$1" -lt 10 ]; then
	    month="$2"0"$1"
	else
	    month="$2""$1"
	fi
	monthEnglish=$(LANG=en_EN.UTF-8;date -d "$2-$1-01" +%b)
	year="$2"
	echo -e "Rapport d'activité du service date.chapril.org du mois $monthEnglish $2"
	generateReport "$monthEnglish" "$month" "$year"
    fi
elif [ "$#" -eq 0 ]; then
    month="$(date +%Y%m)"
    monthEnglish=$(LANG=en_EN.UTF-8;date +%b)
    year="$(date +%Y)"
    echo -e "Rapport d'activité du service date.chapril.org du mois $(date +%b) 20$(date +%y)"
    generateReport "$monthEnglish" "$month" "$year"
else
    echo -e "Bad parameter."
    help
fi