Batch script file to copy and rename files - windows

Question

I'm writing batch script which I'll use to copy files from location A to location B with rename of a source file from location A if the same file exists already in location B.
Currently Im using snippet from another topic here on stack but it doesnt work on files from subfolders, could anyone help me with code below so it work on all files and subdirectiories from both locations? Many thanks!
#ECHO OFF
SETLOCAL ENABLEDELAYEDEXPANSION
SET sourcedir="D:\TEST\FROM"
SET destdir="D:\TEST\TO"
SET /a count=0
for %%c in (%sourcedir%\*.*) do (
CALL :select
ECHO copy "%%c" "%destdir%\%%~nc_!count!%%~xc" /s
)
GOTO :EOF
:select
SET /a count+=1
IF EXIST "%destdir%\%%c" GOTO select
GOTO :eof

Answer 1

Replace your for loop with the following for loop:
for /R "%sourcedir%" %%c in (*.*) do (what you like)
Also, why do you want the following piece of code?
copy "%%c" "%destdir%\%%~nc_!count!%%~xc" /s
Just copy "%%c" %destdir%
More generally you can write:
#ECHO OFF
SET sourcedir="D:\TEST\FROM"
SET destdir="D:\TEST\TO"
:: SET /a count=0
for /R "%sourcedir%" %%c in (*.*) do (
:: SET /a count+=1
IF NOT EXIST "%destdir%\%%c" (
echo copy "%%c" %destdir%
)
)
Hope you are fine with this, possible dublicate of Windows batch file with loop through subfolders

Answer 2

Sharing with what I managed to get so far, works for what I needed, however still not doing well for subfolders:
#ECHO OFF
SET "sourcedir= "
SET "destdir= "
SET "HH=%TIME:~0,2%"
SET "MM=%TIME:~3,2%"
SET "SS=%TIME:~6,2%"
SET "_Time=%HH%%MM%%SS%"
FOR /R "%sourcedir%" %%G IN (*.*) DO (
IF EXIST "%destdir%\%%~nG%%~xG" (
COPY /V /Z "%%G" "%destdir%\%%~nG_duplicate_%_Time%%%~xG"
) ELSE (
COPY /V /Z "%%G" "%destdir%\%%~nG%%~xG")
)