@echo off
setlocal enabledelayedexpansion

rem Sync TSL Playbook snapshot to project root.
rem - Copies docs\standards\tsl_playbook\.agents -> .agents
rem - Copies docs\standards\tsl_playbook\.gitattributes -> .gitattributes
rem Existing targets are backed up before overwrite.

for /f "delims=" %%R in ('git rev-parse --show-toplevel 2^>nul') do set "ROOT=%%R"
if "%ROOT%"=="" set "ROOT=%cd%"

set "SRC=%ROOT%\docs\standards\tsl_playbook"
set "AGENTS_SRC=%SRC%\.agents"
set "GITATTR_SRC=%SRC%\.gitattributes"
set "AGENTS_DST=%ROOT%\.agents"
set "GITATTR_DST=%ROOT%\.gitattributes"

if not exist "%AGENTS_SRC%" (
  echo ERROR: Playbook snapshot not found at "%AGENTS_SRC%".
  echo Run: git subtree add --prefix docs/standards/tsl_playbook ^<playbook-url^> main --squash
  exit /b 1
)

if exist "%AGENTS_DST%" (
  set "RAND=%RANDOM%"
  set "BAK_NAME=.agents.bak.!RAND!"
  ren "%AGENTS_DST%" "!BAK_NAME!"
  echo Backed up existing .agents -> !BAK_NAME!
)

xcopy "%AGENTS_SRC%" "%AGENTS_DST%\" /e /i /y >nul
if errorlevel 1 (
  echo ERROR: failed to copy .agents
  exit /b 1
)

echo Synced .agents from Playbook.

if exist "%GITATTR_SRC%" (
  if exist "%GITATTR_DST%" (
    set "RAND=%RANDOM%"
    set "BAK_NAME=.gitattributes.bak.!RAND!"
    ren "%GITATTR_DST%" "!BAK_NAME!"
    echo Backed up existing .gitattributes -> !BAK_NAME!
  )
  copy /y "%GITATTR_SRC%" "%GITATTR_DST%" >nul
  echo Synced .gitattributes from Playbook.
)

echo Done.
endlocal