From 9520b945203d830bc32885a8187296825ab38747 Mon Sep 17 00:00:00 2001
From: P. J. McDermott <pj@pehjota.net>
Date: Fri, 01 Jun 2018 15:41:52 -0400
Subject: bin/svc: Add action msgs and fix default restart func

And wrap function calls in conditionals.
---
diff --git a/bin/svc b/bin/svc
index 5587c6d..df12e4a 100755
--- a/bin/svc
+++ b/bin/svc
@@ -2,6 +2,16 @@
 
 set -eu
 
+msg_start='[....] Starting %s... '
+msg_stop='[....] Stopping %s... '
+msg_restart='[....] Restarting %s... '
+msg_start_ok='[ ok ] Starting %s... done'
+msg_stop_ok='[ ok ] Stopping %s... done'
+msg_restart_ok='[ ok ] Restarting %s... done'
+msg_start_fail='[fail] Starting %s... failed'
+msg_stop_fail='[fail] Stopping %s... failed'
+msg_restart_fail='[fail] Restarting %s... failed'
+
 XDG_DATA_HOME=
 XDG_CONFIG_HOME=
 XDG_DATA_DIRS=
@@ -10,8 +20,6 @@ XDG_CACHE_HOME=
 PIDDIR=
 SERVICES=
 
-# TODO: "[....] service" output if attached to a tty
-
 load_service()
 {
 	local service="${1}"
@@ -26,20 +34,52 @@ load_service()
 
 	# Default functions
 	stop() { :; }
-	restart() { stop; start; }
+	restart() { stop && start; }
 	status() { :; }
 
 	# TODO: Errors
-	. "${XDG_CONFIG_HOME}/homerc/${service}"
+	. "${XDG_CONFIG_HOME}/homerc/${service}" || return 1
+	return 0
+}
+
+log()
+{
+	local service="${1}"
+	local action="${2}"
+	local var="${3}"
+	shift 3
+
+	if ! tty 1>/dev/null 2>&1; then
+		return 0
+	fi
+
+	case "${action}" in 'start' | 'stop' | 'restart')
+		eval "printf \"\\r\${msg_${action}${var}}\" \"\${service}\""
+	esac
+	case "${var}" in ?*)
+		printf '\n'
+	esac
+
+	return 0
 }
 
 act()
 {
-	local action="${1}"
-	shift 1
+	local service="${1}"
+	local action="${2}"
+	shift 2
+	local es=
+
+	log "${service}" "${action}" ''
 
-	"${action}"
-	return ${?}
+	if "${action}"; then
+		log "${service}" "${action}" '_ok'
+		return 0
+	else
+		es=${?}
+		log "${service}" "${action}" '_fail'
+		return ${es}
+	fi
 }
 
 match_session()
@@ -64,9 +104,10 @@ match_session()
 
 chg_sessions()
 {
-	local old_sessions="${1}"
-	local new_sessions="${2}"
-	shift 2
+	local service="${1}"
+	local old_sessions="${2}"
+	local new_sessions="${3}"
+	shift 3
 	local is_running=
 	local should_run=
 
@@ -82,15 +123,16 @@ chg_sessions()
 	done
 
 	if ${is_running} && ! ${should_run}; then
-		act 'stop'
-		return ${?}
+		if ! act "${service}" 'stop'; then
+			return ${?}
+		fi
 	fi
 	if ! ${is_running} && ${should_run}; then
-		act 'start'
-		return ${?}
+		if ! act "${service}" 'start'; then
+			return ${?}
+		fi
 	fi
 
-	# No change.
 	return 0
 }
 
@@ -116,11 +158,16 @@ main()
 	case "${action}" in
 		'start' | 'stop' | 'restart' | 'status')
 			load_service "${service}" || return 1
-			act "${action}"
+			if ! act "${service}" "${action}"; then
+				return ${?}
+			fi
 			;;
 		*';'*)
 			load_service "${service}" || return 1
-			chg_sessions "${action%%;*}" "${action#*;}"
+			if ! chg_sessions "${service}" \
+					"${action%%;*}" "${action#*;}"; then
+				return ${?}
+			fi
 			;;
 		*)
 			usage 1>&2
--
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