From 0fde1edf28e0527d5d8e4eabb0bdcc2833eba187 Mon Sep 17 00:00:00 2001
From: Ayush Agarwal <ayush@fastmail.in>
Date: Wed, 16 Feb 2022 23:50:47 +0530
Subject: refactor: find default pass and dmenu backends

if the user doesn't provide any input via arguments or config file, try
to setup sane defaults
---
 tessen | 46 +++++++++++++++++++++++++++++++++++++++++++---
 1 file changed, 43 insertions(+), 3 deletions(-)

diff --git a/tessen b/tessen
index 7f9feb7..31fbcc7 100755
--- a/tessen
+++ b/tessen
@@ -491,9 +491,8 @@ wld_copy() {
   unset -v tsn_passfile tsn_passdata tsn_username tsn_password chosen_key
 }
 
-
-is_installed() {
-  if command -v "${1%% *}" > /dev/null 2>&1; then
+are_digits() {
+  if [[ "$1" =~ ^[[:digit:]]+$ ]]; then
     return 0
   else
     return 1
@@ -597,6 +596,47 @@ validate_action() {
   esac
 }
 
+find_pass_backend() {
+  local -a tmp_pass_arr=('pass' 'gopass')
+  local idx
+
+  for idx in "${tmp_pass_arr[@]}"; do
+    if is_installed "$idx"; then
+      pass_backend="$idx"
+      break
+    fi
+  done
+  if [[ -z "$pass_backend" ]]; then
+    _die "please install a valid password store backend: pass | gopass"
+  fi
+
+  unset -v idx tmp_pass_arr
+}
+
+find_dmenu_backend() {
+  local -a tmp_dmenu_arr=('rofi' 'fuzzel' 'bemenu' 'wofi')
+  local idx
+
+  for idx in "${tmp_dmenu_arr[@]}"; do
+    if is_installed "$idx"; then
+      dmenu_backend="$idx"
+      break
+    fi
+  done
+  if [[ -z "$dmenu_backend" ]]; then
+    _die "please install a valid dmenu backend: rofi | fuzzel | bemenu | wofi"
+  fi
+  unset -v idx tmp_dmenu_arr
+}
+
+is_installed() {
+  if command -v "$1" > /dev/null 2>&1; then
+    return 0
+  else
+    return 1
+  fi
+}
+
 _clear() {
   if [[ "$tsn_action" =~ ^(copy|both|default)$ ]]; then
     wl-copy --clear
-- 
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