client: lib_gen: superscript: append subprofile before generating

- Append new subprofile before potentially generating new file
- Simplifies backup/writing process
- Related refactoring

client/src/docker/lib/internal/lib_gen.bash

@@ -461,40 +461,31 @@ function lib_gen::__gen_shell()
 
   local _file="$global_shell_file"
   if [ -f "$_file" ]; then
-    # Backup
+    # Append subprofile source to existing file
-    lib_utils::print_custom "    \e[32m│  │  └─\e[34m Shell superscript found, backup before continuing? [Y/n] \e[0m"
+    lib_utils::print_custom "    \e[32m│  │  └─\e[34m Shell superscript found, append new subprofile to existing file? [Y/n] \e[0m"
     read -p "" _read
     local _confirm="${_read:-y}"
+    if [[ "$_confirm" == [yY] ]]; then
+      grep "$_source" "$_file" >&/dev/null || sed -i "$(wc -l <$_file)i\\$_source\\" "$_file"
+    fi
+    # Or generate new file
+    lib_utils::print_custom "    \e[32m│  │     └─\e[34m Backup existing superscript and generate a new one? [N/y] \e[0m"
+    read -p "" _read
+    local _confirm="${_read:-n}"
     if [[ "$_confirm" == [yY] ]]; then
       # Backup
       local -r _backup=("cp" "-a" "$_file" "${_file}_${global_suffix}")
       lib_utils::print_debug "${_backup[@]}"
       "${_backup[@]}" || lib_utils::die_fatal
-    fi
+      # Write
-
-    lib_utils::print_custom "    \e[32m│  │     └─\e[34m Overwrite existing file? [Y/n] \e[0m"
-    read -p "" _read
-    local _confirm="${_read:-y}"
-    if [[ "$_confirm" == [yY] ]]; then
-      # Overwrite existing file
       lib_gen::__gen_shell_write
-    else
-      # Append subprofile source to existing file
-      lib_utils::print_custom "    \e[32m│  │     └─\e[34m Append to existing file? [Y/n] \e[0m"
-      read -p "" _read
-      local _confirm="${_read:-y}"
-      if [[ "$_confirm" == [yY] ]]; then
-        grep "$_source" "$_file" >&/dev/null || sed -i "$(wc -l <$_file)i\\$_source\\" "$_file"
-      fi
     fi
-
     local _print_custom="    \e[32m│  │        └─\e[34m Edit (new) superscript now? [Y/n] \e[0m"
   else
-    # Create new file
+    # Generate new default file
     lib_gen::__gen_shell_write
     local _print_custom="    \e[32m│  │  └─\e[34m Edit (new) superscript now? [Y/n] \e[0m"
   fi
-
   lib_utils::print_custom "$_print_custom"
   read -p "" _read
   local _confirm="${_read:-y}"