#!/bin/sh

# PROVIDE: postgrest
# REQUIRE: LOGIN
# BEFORE: nginx
# KEYWORD: shutdown
#
# Add postgrest_enable="YES" to /etc/rc.conf to enable PostgREST:
#
# Additional variables you can define are:
#
# postgrest_user:					Username to run PostgREST
#							Default: %%POSTGREST_USER%%
# postgrest_group:					Group to run PostgREST
#							Default: %%POSTGREST_GROUP%%
# postgrest_profile:					Profile list
#							Default: default
# postgrest_syslog_output_enable:			Set to enable syslog output.
#							Default: YES
# postgrest_syslog_output_tag				Set syslog tag if syslog enabled.
#							Default: postgrest
# postgrest_syslog_output_priority: 			Set syslog priority if syslog enabled.
#							Default: notice
# postgrest_syslog_output_facility:			Set syslog facility if syslog enabled.
#							Default: daemon
# postgrest_{{ profile }}_config:			Configuration file to run PostgREST
#							Default: %%ETCDIR%%/default.conf
# postgrest_{{ profile }}_syslog_output_enable		Set to enable syslog output.
#							Default: YES
# postgrest_{{ profile }}_syslog_output_tag		Set syslog tag if syslog enabled.
#							Default: postgrest
# postgrest_{{ profile }}_syslog_output_priority: 	Set syslog priority if syslog enabled.
#							Default: notice
# postgrest_{{ profile }}_syslog_output_facility:	Set syslog facility if syslog enabled.
#							Default: daemon

. /etc/rc.subr

name="postgrest"
rcvar="postgrest_enable"
start_precmd="postgrest_start_precmd"
start_cmd="postgrest_start"
stop_cmd="postgrest_stop"
reload_cmd="postgrest_reload"
extra_commands="reload"

load_rc_config $name

: ${postgrest_enable:="NO"}
: ${postgrest_user:="%%POSTGREST_USER%%"}
: ${postgrest_group:="%%POSTGREST_GROUP%%"}
: ${postgrest_profile:="default"}
: ${postgrest_default_config:="%%ETCDIR%%/default.conf"}
: ${postgrest_syslog_output_enable:="YES"}

postgrest_start_profile()
{
	local _profile _pidfile _child_pidfile _config
	local _syslog_output_enable _syslog_output_tag _syslog_output_priority _syslog_output_facility _syslog_output_flags
	local procname command command_args

	_profile=$1

	_pidfile="/var/run/${name}/${_profile}.pid"
	_child_pidfile="/var/run/${name}/${_profile}.child.pid"

	eval _config=\${${name}_${_profile}_config}
	eval _syslog_output_enable=\${${name}_syslog_output_enable}
	eval _syslog_output_enable=\${${name}_${_profile}_syslog_output_enable:-${_syslog_output_enable}}
	eval _syslog_output_tag=\${${name}_syslog_output_tag:-${name}}
	eval _syslog_output_tag=\${${name}_${_profile}_syslog_output_tag:-"${_syslog_output_tag}"}
	eval _syslog_output_priority=\${${name}_syslog_output_priority}
	eval _syslog_output_priority=\${${name}_${_profile}_syslog_output_priority:-"${_syslog_output_priority}"}
	eval _syslog_output_facility=\${${name}_syslog_output_facility}
	eval _syslog_output_facility=\${${name}_${_profile}_syslog_output_facility:-"${_syslog_output_facility}"}

	if [ ! -r "${_config}" ]; then
		warn "${name}.${_profile}: config file does not exist"
		return 1
	fi

	if checkyesno _syslog_output_enable; then
		if [ -n "${_syslog_output_tag}" ]; then
			_syslog_output_flags="-T ${_syslog_output_tag}"
		fi
		if [ -n "${_syslog_output_priority}" ]; then
			_syslog_output_flags="${_syslog_output_flags} -s ${_syslog_output_priority}"
		fi
		if [ -n "${_syslog_output_facility}" ]; then
			_syslog_output_flags="${_syslog_output_flags} -l ${_syslog_output_facility}"
		fi
	fi

	procname="%%PREFIX%%/sbin/postgrest"
	command="/usr/sbin/daemon"
	command_args="-f ${_syslog_output_flags} -p ${_child_pidfile} -P ${_pidfile} -t ${name}.${_profile} ${procname} ${_config}"

	su -m ${postgrest_user} -c "${command} ${rc_flags} ${command_args}"
	rc=$?

	return ${rc}
}

postgrest_start_precmd()
{
	if [ ! -d "/var/run/${name}" ]; then
		install -d -m 0750 -o ${postgrest_user} -g ${postgrest_group} "/var/run/${name}"
	fi
}

postgrest_start()
{
	local _ok _profile

	if [ -n "$*" ]; then
		_ok=
		for _profile in $@; do
			postgrest_start_profile ${_profile} || continue
			_ok="${_ok} ${_profile}"
		done

		if [ -n "${_ok}" ]; then
			echo "Starting ${name}:${_ok}."
		fi
	fi
}

postgrest_stop()
{
	local _ok _profile _pidfile

	if [ -n "$*" ]; then
		_ok=
		for _profile in $@; do
			_pidfile="/var/run/${name}/${_profile}.pid"
			/bin/pkill -F "${_pidfile}" 2>/dev/null || continue
			_ok="${_ok} ${_profile}"
		done

		if [ -n "${_ok}" ]; then
			echo "Stopping ${name}:${_ok}."
		fi
	fi
}

postgrest_reload()
{
	local _ok _profile _pidfile

	if [ -n "$*" ]; then
		_ok=
		for _profile in $@; do
			_pidfile="/var/run/${name}/${_profile}.child.pid"
			/bin/pkill -USR1 -F "${_pidfile}" 2>/dev/null || continue
			_ok="${_ok} ${_profile}"
		done

		if [ -n "${_ok}" ]; then
			echo "Reloading ${name}:${_ok}."
		fi
	fi
}

case $# in
1) run_rc_command $@ ${postgrest_profile} ;;
*) run_rc_command $@ ;;
esac