#!/bin/bash

# https://forge.evolix.org/projects/evolix-private/repository
#
# You should not alter this file.
# If you need to, create and customize a copy.

set -e

readonly PROGNAME=$(basename $0)
readonly PROGDIR=$(readlink -m $(dirname $0))
readonly ARGS="$@"

usage() {
    echo "$PROGNAME action prefix"
}

disable_alerts () {
    disabled_file="$1_disabled"
    enabled_file="$1_enabled"

    if [ -e "${enabled_file}" ]; then
        mv "${enabled_file}" "${disabled_file}"
    else
        touch "${disabled_file}"
        chmod 0644 "${disabled_file}"
    fi
}

enable_alerts () {
    disabled_file="$1_disabled"
    enabled_file="$1_enabled"

    if [ -e "${disabled_file}" ]; then
        mv "${disabled_file}" "${enabled_file}"
    else
        touch "${enabled_file}"
        chmod 0644 "${enabled_file}"
    fi
}

now () {
  date --iso-8601=seconds
}

log_disable () {
    echo "$(now) - alerts disabled by $(logname || echo unknown)" >> $1
}

log_enable () {
    echo "$(now) - alerts enabled by $(logname || echo unknown)" >> $1
}

main () {
    local action=$1
    local prefix=$2

    local base_dir="/var/lib/misc"
    mkdir -p "${base_dir}"

    local file_path="${base_dir}/${prefix}_alerts"
    local log_file="/var/log/${prefix}_alerts.log"

    case "$action" in
    enable)
        enable_alerts ${file_path}
        log_enable ${log_file}
        ;;
    disable)
        disable_alerts ${file_path}
        log_disable ${log_file}
        ;;
    help)
        usage
        ;;
    *)
        >&2 echo "Unknown action '$action'"
        exit 1
        ;;
    esac
}

main $ARGS