From 01a1ed449f72740d81cda58357936639ce8b79cd Mon Sep 17 00:00:00 2001
From: Patrick Spek <p.spek@tyil.nl>
Date: Sun, 22 Mar 2020 23:23:28 +0100
Subject: Include duration of installation process

---
 lib/actions/install.bash |  8 +++++++-
 lib/util.bash            | 22 ++++++++++++++++++++++
 2 files changed, 29 insertions(+), 1 deletion(-)

diff --git a/lib/actions/install.bash b/lib/actions/install.bash
index b2faefd..8f6993b 100644
--- a/lib/actions/install.bash
+++ b/lib/actions/install.bash
@@ -16,6 +16,8 @@ action() {
 	local OPTIND
 	local prefix_absolute
 	local modules
+	local init
+	local duration
 
 	while getopts ":b:p:" opt
 	do
@@ -33,6 +35,7 @@ action() {
 	prefix_absolute="$(CDPATH="" cd -- "$RSTAR_PREFIX" && pwd -P)"
 
 	info "Installing Raku in $prefix_absolute"
+	init="$(date +%s)"
 
 	# Compile all core components
 	for component in moarvm nqp rakudo
@@ -73,9 +76,12 @@ action() {
 		done
 	fi
 
+	duration="$(pp_duration "$init")"
+
 	# Friendly message
-	# TODO: Add information on the time it took"
 	info "Rakudo Star has been installed into $prefix_absolute!"
+	info "The installation took $duration."
+	info ""
 	info "You may need to add the following paths to your \$PATH:"
 	info "  $prefix_absolute/bin"
 	info "  $prefix_absolute/share/perl6/site/bin"
diff --git a/lib/util.bash b/lib/util.bash
index 8ca1a5e..7ab0bc1 100644
--- a/lib/util.bash
+++ b/lib/util.bash
@@ -74,6 +74,28 @@ fetch() {
 	return $exit_code
 }
 
+# Pretty print a duration between a starting point (in seconds) and an end
+# point (in seconds). If no end point is given, the current time will be used.
+# A good way to get a current timestamp in seconds is through date's "%s"
+# format.
+pp_duration() {
+	local start=$1
+	local end=$2
+	local diff
+
+	if [[ -z "$end" ]]
+	then
+		end="$(date +%s)"
+	fi
+
+	diff=$((end - start))
+
+	printf "%dh %02dm %02ds\n" \
+		"$((diff / 60 / 60))" \
+		"$((diff / 60))" \
+		"$((diff % 60))"
+}
+
 # Create a temporary directory. Similar to tempfile, but you'll get a directory
 # instead.
 tmpdir() {
-- 
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