scripts/github/check.sickchill.update

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#!/bin/sh
# Purpose {{{
## Create a temp file (to monitor) if an upgrade is available for Sickchill
## project on Github.
## It's based on the Sickchill URL site to get the current version.
## How-to use {{{
### 1. Needs releasetags script, in the same directory
### cf. https://git.101010.fr/gardouille-dotfiles/scripts/github/releasetags
# wget https://git.101010.fr/gardouille-dotfiles/scripts/raw/branch/master/github/releasetags
### 2. Create a cron job with Sickchill URL as first argument, eg.
#00 20 * * * root /opt/repos/ipr.scripts/github/check_sickchill_update http://sickchill.domain.tld:port/System/Info/Public
### 3. Monitor the temp file: /tmp/.github.sickchill.upgrade
# Or enable MAILTO in cronjob and edit the script to print a message.
# Or send a mail.
# …
## }}}
# }}}
# Vars {{{
readonly PROGNAME=$(basename "${0}")
readonly NBARGS="${#}"
## Test if DEBUG is already defined (by parent script,…)
[ -z "${DEBUG}" ] && DEBUG=1
## Colors
readonly PURPLE='\033[1;35m'
readonly RED='\033[0;31m'
readonly RESET='\033[0m'
readonly COLOR_DEBUG="${PURPLE}"
script_wd=$(dirname "${0}")
sickchill_repo_url="https://github.com/SickChill/SickChill"
# }}}
usage() { # {{{
cat <<- EOF
usage: $PROGNAME [-d|-f|-h] --url http://sickchill.domain.tld:port/config
Compare current version of an installed Sickchill site and the last available.
EXAMPLE:
- Compare the current version installed on http://sickchill.domain.tld:port
check.sickchill.update --url http://sickchill.domain.tld:port/config
OPTIONS:
-f,--file
Set the path to the temp file that will be create and
that should be monitored (default: /tmp/.github.sickchill.upgrade).
-u,--url
Specify the URL of the Sickchill instance to check.
-d,--debug
Enable debug messages.
-h,--help
Print this help message.
EOF
}
# }}}
debug_message() { # {{{
local_debug_message="${1}"
## Print message if DEBUG is enable (=0)
[ "${DEBUG}" -eq "0" ] && printf '\e[1;35m%-6b\e[m\n' "DEBUG ${PROGNAME}: ${local_debug_message}"
return 0
}
# }}}
error_message() { # {{{
local_error_message="${1}"
local_error_code="${2}"
## Print message if DEBUG is enable (=0)
[ "${DEBUG}" -eq "0" ] && printf '%b\n' "ERROR ${PROGNAME}: ${RED}${local_error_message}${RESET}"
exit "${local_error_code:=66}"
}
# }}}
define_vars() { # {{{
## If sickchill_url wasn't defined (argument,...) {{{
if [ -z "${sickchill_url}" ]; then
### Display help message and exit
usage
error_message "Please set the Sickchill's URL with -u|--url option." 3
fi
## }}}
## If sickchill_new_version_file wasn't defined (argument,...) {{{
if [ -z "${sickchill_new_version_file}" ]; then
### Store it in /tmp directory
sickchill_new_version_file="/tmp/.github.sickchill.upgrade"
fi
## }}}
## TODO: Use --no-progress-meter instead of --silent
## when curl 7.74.x will be available on Debian Stable
sickchill_current_version=$(curl --silent "${sickchill_url:=/dev/null}" | \grep -oP '(?<=https://github.com/SickChill/SickChill/releases/tag/v)[[:alnum:].]*')
sickchill_new_version=$("${script_wd}"/releasetags "${sickchill_repo_url}" | grep -vE -- '(dev|rc)' | head -n1 | sed 's/v//')
}
# }}}
main() { # {{{
## Define all vars according the selected options
define_vars
## Check if the current version is the last one {{{
if [ "${sickchill_current_version}" != "${sickchill_new_version}" ]; then
debug_message "Test Sickchill version \
Current version (${sickchill_current_version}) and new one (${sickchill_new_version}) seems to be different."
## Create a temp file to monitor
debug_message "Test Sickchill version \
Create ${sickchill_new_version_file} temp file to monitore."
touch -- "${sickchill_new_version_file}"
printf '\e[1;35m%-6s\e[m\n' "An upgrade is available for Sickchill (current: ${sickchill_current_version}): ${sickchill_new_version}." >> "${sickchill_new_version_file}"
else
debug_message "Test Sickchill version \
The current version (${sickchill_current_version}) is up-to-date."
rm -f -- "${sickchill_new_version_file}"
fi
## }}}
}
# }}}
# Manage arguments # {{{
# This code can't be in a function due to arguments
if [ ! "${NBARGS}" -eq "0" ]; then
## If the first argument is not an option
if ! printf -- '%s' "${1}" | grep -q -E -- "^-+";
then
usage
error_message "Unknown argument (${1}), check the help." 1
fi
manage_arg="0"
# Parse all options (start with a "-") one by one
while printf -- '%s' "${1}" | grep -q -E -- "^-+"; do
case "${1}" in
-u|--url ) ## Set URL
## Move to the next argument
shift
## Define sickchill_url
sickchill_url="${1}"
;;
-d|--debug ) ## debug
DEBUG=0
;;
-h|--help ) ## help
usage
## Exit after help informations
exit 0
;;
-f|--file ) ## Set temp file
## Move to the next argument
shift
## Define sickchill_new_version_file
sickchill_new_version_file="${1}"
;;
-- ) ## End of options list
## End the while loop
break
;;
* ) ## unknow option
printf '%b\n' "${RED}Invalid option: ${1}${RESET}"
printf '%b\n' "---"
usage
exit 1
;;
esac
debug_message "Arguments management \
${RED}${1}${COLOR_DEBUG} option managed."
## Move to the next argument
shift
manage_arg=$((manage_arg+1))
done
debug_message "Arguments management \
${RED}${manage_arg}${COLOR_DEBUG} argument(s) successfully managed."
else
error_message "Please at least give an URL with -u|--url option. See --help for more informations." 2
fi
# }}}
main
exit 0