AppleScript: Use Dialog Return to Rename File - applescript

Question

I'm attempting to create a Folder Action within Automator on Mac where when a new file is dropped into my specified folder, a dialog box opens asking which file I'm dropping in -- then, based on that selection, would automatically rename it to the dialog return and ideally a variable of today's date (while leaving the same extension).
Pretty new to AppleScripts but this is what I have so far which doesn't give me any errors but also doesn't do anything:
on run
set theChoice to {"Option1", "Option2", "Option3", "Option4", "Other"}
set selected to {choose from list theChoice}
if selected is "Option1" then
tell application "Finder"
set currentFile to name of (selection as alias)
set currentName to name of currentFile
set name of currentFile to "Option1" & "." & name extension of currentFile
end tell
else if selected is "Option2" then
tell application "Finder"
set currentFile to name of (selection as alias)
set currentName to name of currentFile
set name of currentFile to "Option2" & "." & name extension of currentFile
end tell
else if selected is "Option3" then
tell application "Finder"
set currentFile to name of (selection as alias)
set currentName to name of currentFile
set name of currentFile to "Option3" & "." & name extension of currentFile
end tell
else if selected is "Option4" then
tell application "Finder"
set currentFile to name of (selection as alias)
set currentName to name of currentFile
set name of currentFile to "Option4" & "." & name extension of currentFile
end tell
else
tell application "Finder"
set currentFile to name of (selection as alias)
set currentName to name of currentFile
set name of currentFile to alias & "." & name extension of currentFile
end tell
end if
end run
After figuring this part out I was also hoping to add a today's date (e.g. "_20160510") variable to the end of each filename, so if that's possible to include also that'd be great.

Answer 1

I've edited my quick answer. There may be other issues. I'll have to look at this a bit later. But this seems to work. You're going to have to get better at isolating smaller sections of code before putting too much together. Make sure you know what something returns first.
Look over the differences between the original code and this. You'll notice that
I added "without multiple selections"
You don't need to put choose from list in another list, so I've changed that, and gotten rid of "item 1 of item 1 of" because now selected is a simple list
I took out extra "name of"
I put in if/then to cover for cancel (which returns false)
on run
set theChoice to {"Option1", "Option2", "Option3", "Option4", "Other"}
set selected to (choose from list theChoice without multiple selections allowed)
if selected is not false then
if item 1 of selected is "Option1" then
tell application "Finder"
set currentFile to (selection as alias)
set currentName to name of currentFile
set name of currentFile to "Option1" & "." & name extension of currentFile
end tell
else if item 1 of selected is "Option2" then
tell application "Finder"
set currentFile to (selection as alias)
set currentName to name of currentFile
set name of currentFile to "Option2" & "." & name extension of currentFile
end tell
else if item 1 of selected is "Option3" then
tell application "Finder"
set currentFile to (selection as alias)
set currentName to name of currentFile
set name of currentFile to "Option3" & "." & name extension of currentFile
end tell
else if item 1 of selected is "Option4" then
tell application "Finder"
set currentFile to (selection as alias)
set currentName to name of currentFile
set name of currentFile to "Option4" & "." & name extension of currentFile
end tell
else
tell application "Finder"
set currentFile to (selection as alias)
set currentName to name of currentFile
--set name of currentFile to alias & "." & name extension of currentFile
--what is it you want to do here??
end tell
end if
end if
end run
[EDIT]
For suggestions in adding leading zeroes to date numbers, see http://www.foodoo.sunreal.com.au/info/date_info.html
it's old, but still appropriate.
Also, consider (if possible) using the do shell script command, like:
do shell script "date +\"%m-%d-%y-%H-%M-%S\""
which will return something like
"05-12-16-11-46"
( See http://www.cyberciti.biz/faq/linux-unix-formatting-dates-for-display/ )
As for using this stuff in Automator, it may help to see what you're doing in Automator.

Answer 2

This is a shorter version of the script summarizing redundant code
set theChoice to {"Option1", "Option2", "Option3", "Option4", "Other"}
set selected to {choose from list theChoice}
if theChoice is false then return
set chosen to item 1 of theChoice
tell application "Finder" to set theSelection to selection
if theSelection is {} then return
set currentFile to item 1 of theSelection
set currentDate to do shell script "date +%Y%d%m"
if chosen is "Other" then
tell application "Finder"
-- do something with "Other"
end tell
else
tell application "Finder"
set name of currentFile to chosen & "_" & currentDate & "." & name extension of currentFile
end tell
end if