#!/bin/bash

# FIXME relecture + commentaires

id=$1
url=$2
email=$3
schedule=$4
now=$5
user=$6
password=$7

timeout=5

for CONFIG_FILE in \
      /etc/alternc/local.sh \
      /usr/lib/alternc/functions.sh 
  do
    if [ ! -r "$CONFIG_FILE" ]; then
        echo "Can't access $CONFIG_FILE."
        exit 1
    fi
    . "$CONFIG_FILE"
done

from="noreply@$FQDN"

if [ "x$url" == "x" ] ; then
  echo Missing arguments
  exit 0
fi

urldecode() {
  arg="$1"
  i="0"
(
  while [ "$i" -lt ${#arg} ]; do
    c0=${arg:$i:1}
    if [ "x$c0" = "x%" ]; then
      c1=${arg:$((i+1)):1}
      c2=${arg:$((i+2)):1}
      printf "\x$c1$c2"
      i=$((i+3))
    else
      echo -n "$c0"
      i=$((i+1))
    fi
  done
) | sed -e 's/"/\\"/g' -e 's/\!/\\\!/g' -e 's/\ /\\\ /g' -e "s/'/\\'/g"
}

tmpfile=$(mktemp /tmp/altern-cron-id$id-$$.XXX)

# Don't really understand why it must be called this way...
(
echo -e "Here the report for the scheduled task for the cron #$id in your AlternC configuration (from http://$FQDN)\n\n"
echo -e "\n---------- BEGIN ----------"
bash -c "wget -O - --no-check-certificate --http-user=$(urldecode $user) --http-password=$(urldecode $password) \"$(urldecode $url)\" --timeout=$timeout 2>&1"
echo -e "\n----------  END  ----------"
) > "$tmpfile"

# If there is an email specified, mail it
if [ ! "x$email" == "x" -a ! "$email" == "null" ] ; then
  date=$(date +%x\ %X)
  cat "$tmpfile" | mailx -s "AlternC Cron #$id - Report $date" -r "$from" "$(urldecode $email)"
fi

rm -f "$tmpfile"

# On calcule l'heure de la prochaine execution idéale
((interval=$schedule * 60))
((next=$(( $(( $now / $interval)) + 1 )) * $interval ))

# On check pour pas avoir d'injection SQL
if [[ ! "$id" =~ ^[0-9]+$ || ! "$next" =~ ^[0-9]+$ ]] ; then
  echo "Id +$id+ or time +$next+ is incorrect."
  return 2
fi

$MYSQL_DO "update cron set next_execution = FROM_UNIXTIME($next) where id = $id;"