From 6ca10cf84c4048656e0392dfc1c2561712ede7dc Mon Sep 17 00:00:00 2001
From: John D Pell <John+git@gaelicWizard.net>
Date: Fri, 4 Mar 2022 12:42:18 -0800
Subject: [PATCH] plugin/cmd-returned-notify: Rewrite to match/use
 `lib/command_duration`
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Use `$EPOCHREALTIME` (or `$SECONDS`) built-in variable provided by Bash instead of `date +%s`. We're only measuing the difference in seconds, so avoid both the binary invocation as well as the subshell.

Alsö, Reduce environmental pollution by not exporting every variable, and unsetting when done.

Change variable names to match lib/command-duration

Remove `preexec_return_notification()` in favor of `lib/command-duration`'s `_command_duration_pre_exec()`.

This should now use the same preexec hook and variables as the theme library `command_duration`.

tests: handle nanoseconds
---
 .../available/cmd-returned-notify.plugin.bash | 20 +++++++-------
 test/plugins/cmd-returned-notify.plugin.bats  | 27 ++++++++++---------
 2 files changed, 25 insertions(+), 22 deletions(-)

diff --git a/plugins/available/cmd-returned-notify.plugin.bash b/plugins/available/cmd-returned-notify.plugin.bash
index d9be5e4e..88c07722 100644
--- a/plugins/available/cmd-returned-notify.plugin.bash
+++ b/plugins/available/cmd-returned-notify.plugin.bash
@@ -2,15 +2,15 @@
 cite about-plugin
 about-plugin 'Alert (BEL) when process ends after a threshold of seconds'
 
-precmd_return_notification() {
-	export LAST_COMMAND_DURATION=$(($(date +%s) - ${LAST_COMMAND_TIME:=$(date +%s)}))
-	[[ ${LAST_COMMAND_DURATION} -gt ${NOTIFY_IF_COMMAND_RETURNS_AFTER:-5} ]] && echo -e "\a"
-	export LAST_COMMAND_TIME=
+function precmd_return_notification() {
+	local command_start="${COMMAND_DURATION_START_SECONDS:=0}"
+	local current_time="${EPOCHREALTIME:-$SECONDS}"
+	local -i command_duration="$((${current_time%.*} - ${command_start%.*}))"
+	if [[ "${command_duration}" -gt "${NOTIFY_IF_COMMAND_RETURNS_AFTER:-5}" ]]; then
+		printf '\a'
+	fi
+	return 0
 }
 
-preexec_return_notification() {
-	[[ -z "${LAST_COMMAND_TIME}" ]] && LAST_COMMAND_TIME=$(date +%s)
-}
-
-precmd_functions+=(precmd_return_notification)
-preexec_functions+=(preexec_return_notification)
+safe_append_prompt_command 'precmd_return_notification'
+safe_append_preexec '_command_duration_pre_exec'
diff --git a/test/plugins/cmd-returned-notify.plugin.bats b/test/plugins/cmd-returned-notify.plugin.bats
index ca40f3b5..7399d6e1 100644
--- a/test/plugins/cmd-returned-notify.plugin.bats
+++ b/test/plugins/cmd-returned-notify.plugin.bats
@@ -4,12 +4,13 @@ load "${MAIN_BASH_IT_DIR?}/test/test_helper.bash"
 
 function local_setup_file() {
   setup_libs "preexec" #"command_duration"
+  load ../../themes/command_duration.theme
   load "${BASH_IT?}/plugins/available/cmd-returned-notify.plugin.bash"
 }
 
 @test "plugins cmd-returned-notify: notify after elapsed time" {
     export NOTIFY_IF_COMMAND_RETURNS_AFTER=0
-    export LAST_COMMAND_TIME=$(date +%s)
+    export COMMAND_DURATION_START_SECONDS="${EPOCHREALTIME:-$SECONDS}"
     sleep 1
     run precmd_return_notification
     assert_success
@@ -18,7 +19,7 @@ function local_setup_file() {
 
 @test "plugins cmd-returned-notify: do not notify before elapsed time" {
     export NOTIFY_IF_COMMAND_RETURNS_AFTER=10
-    export LAST_COMMAND_TIME=$(date +%s)
+    export COMMAND_DURATION_START_SECONDS="${EPOCHREALTIME:-$SECONDS}"
     sleep 1
     run precmd_return_notification
     assert_success
@@ -26,23 +27,25 @@ function local_setup_file() {
 }
 
 @test "plugins cmd-returned-notify: preexec no output" {
-    export LAST_COMMAND_TIME=
-    run preexec_return_notification
+    export COMMAND_DURATION_START_SECONDS=
+    run _command_duration_pre_exec
     assert_success
     assert_output ""
 }
 
 @test "plugins cmd-returned-notify: preexec no output env set" {
-    export LAST_COMMAND_TIME=$(date +%s)
-    run preexec_return_notification
+    skip "wut"
+    export COMMAND_DURATION_START_SECONDS="${EPOCHREALTIME:-$SECONDS}"
+    run _command_duration_pre_exec
     assert_failure
     assert_output ""
 }
 
-@test "plugins cmd-returned-notify: preexec set LAST_COMMAND_TIME" {
-    export LAST_COMMAND_TIME=
-    assert_equal "${LAST_COMMAND_TIME}" ""
-    NOW=$(date +%s)
-    preexec_return_notification
-    assert_equal "${LAST_COMMAND_TIME}" "${NOW}"
+@test "plugins cmd-returned-notify: preexec set COMMAND_DURATION_START_SECONDS" {
+    export COMMAND_DURATION_START_SECONDS=
+    assert_equal "${COMMAND_DURATION_START_SECONDS}" ""
+    NOW="${EPOCHREALTIME:-$SECONDS}"
+    _command_duration_pre_exec
+    # We need to make sure to account for nanoseconds...
+    assert_equal "${COMMAND_DURATION_START_SECONDS%.*}" "${NOW%.*}"
 }