@echo off
setlocal EnableExtensions EnableDelayedExpansion

set "rootDir=%CD%"
set "currentDir=%rootDir%\_CURRENT"
if not exist "%currentDir%" (
  mkdir "%currentDir%" >nul 2>&1
  if not exist "%currentDir%" (
    echo ERROR: Cannot create "%currentDir%" permission denied?
    echo Run the script with sufficient rights or choose a writable location.
    exit /b 1
  )
)

set "logFile=%currentDir%\_UpdateSequences.log"
echo [%date% %time%] === UpdateSequences run started in "%rootDir%" ===>> "%logFile%"

set /a dailiesScanned=0
set /a sequencesTotal=0
set /a sequencesMirrored=0
set /a mirrorFailures=0

rem Scan for folders with YYYY-MM-DD format (e.g., 2023-12-15)
for /d %%D in (????-??-??) do (
  if exist "%%D" (
    set /a dailiesScanned+=1
    set "hadSub=0"
    rem Case 1: subfolders treated as sequences
    for /d %%S in ("%%D\*") do (
      set /a sequencesTotal+=1
      set "hadSub=1"
      call :MirrorOne "%%D\%%~nxS" "%%~nxS"
    )
    rem Case 2: no subfolders => mirror daily itself as a sequence
    if "!hadSub!"=="0" (
      set /a sequencesTotal+=1
      call :MirrorOne "%%D" "%%~nxD"
    )
  )
)

echo( Summary: dailies=%dailiesScanned% sequences=%sequencesTotal% ok=%sequencesMirrored% fail=%mirrorFailures%
echo [%date% %time%] === UpdateSequences run completed (d=%dailiesScanned% seq=%sequencesTotal% ok=%sequencesMirrored% fail=%mirrorFailures%) ===>> "%logFile%"
echo( Done. Press any key to exit.
pause >nul
exit /b 0

:MirrorOne
setlocal EnableExtensions EnableDelayedExpansion
set "srcRel=%~1"
set "seqName=%~2"

set "srcAbs=%rootDir%\%srcRel%"
set "dstAbs=%currentDir%\%seqName%"

rem Only proceed if source is a directory (trailing \ check)
if not exist "%srcRel%\" (
  echo   Skip: missing folder "%srcRel%"
  endlocal & exit /b 0
)

echo   Mirror: "%srcAbs%" -^> "%dstAbs%"
echo [%date% %time%] Mirror: "%srcAbs%" -^> "%dstAbs%" >> "%logFile%"
robocopy "%srcAbs%" "%dstAbs%" /MIR /MT:8 /R:1 /W:1 /COPY:DAT /DCOPY:DAT /FFT /NFL /NDL /NP /NJH /NJS >> "%logFile%" 2>&1
set "rc=!errorlevel!"
if "!rc!"=="" set "rc=0"
if !rc! LSS 8 (
  set /a sequencesMirrored+=1
  echo(     OK (rc=!rc!)
  echo [%date% %time%]   OK rc=!rc! >> "%logFile%"
) else (
  set /a mirrorFailures+=1
  echo(     ERROR (rc=!rc!) - see log
  echo [%date% %time%]   ERROR rc=!rc! >> "%logFile%"
)

endlocal & exit /b 0