refactor: Improve script maintainability and readability with cleaner functions

scripts/ssh_session.sh

@@ -16,40 +16,44 @@ parse_ssh_port() {
   echo $port
 }
 
-search_ssh_user() {
+parse_ssh_config() {
   for ssh_config in `awk '
-    $2 == "Host" {
-      gsub("\\\\.", "\\\\.", $3);
-      gsub("\\\\*", ".*", $3);
-      host = $3;
+    $1 == "Host" {
+      gsub("\\\\.", "\\\\.", $2);
+      gsub("\\\\*", ".*", $2);
+      host = $2;
       next;
     }
-    $2 == "User" {
-      $2 = "";
+    $1 == "User" {
+      $1 = "";
       sub( /^[[:space:]]*/, "" );
       printf "%s|%s\n", host, $0;
     }' $1`; do
     local host_regex=${ssh_config%|*}
     local host_user=${ssh_config#*|}
-    if [[ "$2" =~ $host_regex ]]; then
-      ssh_user=$host_user
+    if [[ "$2" == $host_regex ]]; then
+      ssh_user_found=$host_user
       break
     fi
   done
 
-  echo $ssh_user
+  echo $ssh_user_found
 }
 
 get_ssh_user() {
-  # Set default ssh_user as current user
-  local ssh_user=$(whoami)
-
-  # Search SSH User information in global configuration file
-  ssh_user=$(search_ssh_user /etc/ssh/ssh_config $1)
-
+  # Search SSH User in user local file if available
   if [ -f ~/.ssh/config ]; then
-    # Search SSH User information in user configuration file
-    ssh_user=$(search_ssh_user ~/.ssh/config $1)
+    ssh_user=$(parse_ssh_config ~/.ssh/config $1)
+  fi
+
+  # If SSH User not found, search in global config file
+  if [ -z $ssh_user ]; then
+    ssh_user=$(parse_ssh_config /etc/ssh/ssh_config $1)
+  fi
+
+  #If SSH User not found in any config file, return current user
+  if [ -z $ssh_user ]; then
+    ssh_user=$(whoami)
   fi
 
   echo $ssh_user