AppleScript Focus / Rename File (and clicking anywhere) - macos

Question

on run {input}
set filepath to POSIX path of input
do shell script "touch " & quoted form of filepath & "untitled"
return input
end run
Is what I have so far, and it works, but is there a way to then focus on the file then trigger a rename? I dont want the rename to be automatic, just trigger the event (like pressing "return" while you have a file selected). And I dont want to use any sort of modal...
Quick Side question: is there a way to set this so that i dont have to select a folder or file directly, but can do it by, lets say, clicking in a white space in a folder as long as it's in Finder? Right now I have my "Service receives selected" to "files or folders" in Finder.app.
== UPDATED CODE ==
on run {input}
set filepath to POSIX path of input
do shell script "touch " & quoted form of filepath & "untitled"
tell application "Finder"
activate
set target of Finder window 1 to POSIX file "/Users/oscargodson/Documents/designs/untitled"
end tell
tell application "System Events"
tell process "Finder"
keystroke return
end tell
end tell
return input
end run
If i hardcode the path it works! But how do I get it as a var that works?

Answer 1

Here's one way. I think a modal window where you ask for the name would be better but you can try this. Notice you do not use "POSIX path" in this code. Applescript doesn't use POSIX paths. Also {input}, as indicated by the brackets around it, is a list of items. Therefore you act on the items of the list, and in this case we act on the first item.
set filepath to item 1 of input
tell application "Finder"
activate
reveal filepath
end tell
tell application "System Events"
tell process "Finder"
keystroke return
end tell
end tell
EDIT: With your updated code, here's a working script...
on run {input}
if (class of input) is not list then set input to {input}
set theFolder to (item 1 of input) as text
try
alias theFolder
tell application "Finder"
if (class of item theFolder) is not folder then error "input is not a folder."
activate
set theFile to make new file at folder theFolder with properties {name:"untitled"}
reveal theFile
end tell
delay 0.2
tell application "System Events"
tell process "Finder"
keystroke return
end tell
end tell
on error theError number errorNumber
tell me
activate
display dialog "There was an error: " & (errorNumber as text) & return & return & theError buttons {"OK"} default button 1 with icon stop
return
end tell
end try
return input
end run

Answer 2

tell application "Finder"
activate
reopen -- in case there are no open windows
set target of Finder window 1 to POSIX file "/Applications/Safari.app"
end tell
reveal and select always open a new window, set target and set selection don't.
I don't know why, but when set selection it used in column view, you can only select items in the entire contents of the target of the front window. The same thing doesn't happen in other views, so it seems like a bug.
Fix for the code in the edited question:
on go(input)
set p to POSIX path of (input as text)
set p2 to p & "untitled"
do shell script "touch " & p2
tell application "Finder"
reopen
activate
set target of Finder window 1 to POSIX file p2
end tell
delay 0.3 -- time to release modifier keys
tell application "System Events" to keystroke return
end go
tell application "Finder"
set fold to folder (path to documents folder)
end tell
go(fold)
(That on go and the last lines are just for testing.)

Answer 3

I've created an AppleScript based on the #regulus6633's one, but with some improvements.
Note: This answer was originally posted as an AskDifferent answer. I'm copy/pasting here for convenience.
The idea is to create an Automator workflow and assigning a shortcut to it using the following steps:
Open Automator and create a Service;
Set the input to no input, and the application to Finder.app;
Drag and Drop the Run AppleScript workflow element onto the grey space;
Put the contents of this AppleScript in the textbox;
Save the workflow with a reasonable name (like New File);
Go to Settings -> Keyboard -> Shortcuts -> Services and assign a shortcut to it.
Now, let's show the AppleScript:
set file_name to "untitled"
set file_ext to ".txt"
set is_desktop to false
-- get folder path and if we are in desktop (no folder opened)
try
tell application "Finder"
set this_folder to (folder of the front Finder window) as alias
end tell
on error
-- no open folder windows
set this_folder to path to desktop folder as alias
set is_desktop to true
end try
-- get the new file name (do not override an already existing file)
tell application "System Events"
set file_list to get the name of every disk item of this_folder
end tell
set new_file to file_name & file_ext
set x to 1
repeat
if new_file is in file_list then
set new_file to file_name & " " & x & file_ext
set x to x + 1
else
exit repeat
end if
end repeat
-- create and select the new file
tell application "Finder"
activate
set the_file to make new file at folder this_folder with properties {name:new_file}
if is_desktop is false then
reveal the_file
else
select window of desktop
set selection to the_file
delay 0.1
end if
end tell
-- press enter (rename)
tell application "System Events"
tell process "Finder"
keystroke return
end tell
end tell
For convenience, I'm putting this AppleScript in this GitHub Gist.