@echo off
setlocal enabledelayedexpansion

rem Sync project templates to target project.
rem - Copies templates/memory-bank/ -> <project-root>/memory-bank/
rem - Copies templates/prompts/ -> <project-root>/docs/prompts/
rem - Copies templates/AGENTS.template.md -> <project-root>/AGENTS.md
rem - Copies templates/AGENT_RULES.template.md -> <project-root>/AGENT_RULES.md
rem Existing targets are NOT overwritten (skip if exists).
rem
rem Usage:
rem   sync_templates.bat                           # sync to current git root
rem   sync_templates.bat -project-root <path>      # sync to specified project
rem   sync_templates.bat -force                    # overwrite existing files
rem   sync_templates.bat -full                     # append full framework to existing AGENTS.md

set "SCRIPT_DIR=%~dp0"
for %%I in ("%SCRIPT_DIR%..") do set "SRC=%%~fI"

set "FORCE=0"
set "FULL=0"
set "PROJECT_ROOT="

:parse_args
if "%~1"=="" goto args_done
if /I "%~1"=="-force" (
  set "FORCE=1"
  shift
  goto parse_args
)
if /I "%~1"=="-full" (
  set "FULL=1"
  shift
  goto parse_args
)
if /I "%~1"=="-project-root" (
  if "%~2"=="" (
    echo ERROR: -project-root requires a path.
    exit /b 1
  )
  set "PROJECT_ROOT=%~2"
  shift
  shift
  goto parse_args
)
if /I "%~1"=="-h" goto show_help
if /I "%~1"=="-help" goto show_help
echo ERROR: positional args are not supported. Use -project-root.
exit /b 1

:show_help
echo Usage:
echo   sync_templates.bat [options]
echo   sync_templates.bat -project-root ^<path^>
echo.
echo Options:
echo   -project-root PATH   Target project root ^(default: git root^)
echo   -force    Overwrite existing files
echo   -full     Append full framework (规则优先级 + 新会话开始时) to existing AGENTS.md
echo   -h, -help Show this help
exit /b 0

:args_done

rem Determine project root
if "%PROJECT_ROOT%"=="" (
  for /f "delims=" %%R in ('git -C "%SCRIPT_DIR%" rev-parse --show-toplevel 2^>nul') do set "PROJECT_ROOT=%%R"
)
if "%PROJECT_ROOT%"=="" set "PROJECT_ROOT=%cd%"
for %%I in ("%PROJECT_ROOT%") do set "PROJECT_ROOT=%%~fI"

rem Source directories
set "TEMPLATES_DIR=%SRC%\templates"
set "MEMORY_BANK_SRC=%TEMPLATES_DIR%\memory-bank"
set "PROMPTS_SRC=%TEMPLATES_DIR%\prompts"
set "AGENTS_SRC=%TEMPLATES_DIR%\AGENTS.template.md"
set "AGENT_RULES_SRC=%TEMPLATES_DIR%\AGENT_RULES.template.md"

rem Check source exists
if not exist "%TEMPLATES_DIR%" (
  echo ERROR: Templates directory not found: %TEMPLATES_DIR%
  exit /b 1
)

rem Skip if source equals destination
if /I "%SRC%"=="%PROJECT_ROOT%" (
  echo Skip: playbook root equals project root.
  echo Done.
  exit /b 0
)

for /f "usebackq delims=" %%D in (`powershell -NoProfile -Command "Get-Date -Format 'yyyy-MM-dd'"`) do set "SYNC_DATE=%%D"
if "%SYNC_DATE%"=="" set "SYNC_DATE=%date%"

echo Syncing templates to: %PROJECT_ROOT%
echo.

rem 1. Sync memory-bank/
set "MEMORY_BANK_DST=%PROJECT_ROOT%\memory-bank"
if exist "%MEMORY_BANK_SRC%" (
  if exist "%MEMORY_BANK_DST%" (
    if "%FORCE%"=="0" (
      echo memory-bank/ already exists. Skip. Use -force to overwrite.
      goto sync_prompts
    )
  )
  if not exist "%MEMORY_BANK_DST%" mkdir "%MEMORY_BANK_DST%"
  xcopy "%MEMORY_BANK_SRC%\*" "%MEMORY_BANK_DST%\" /e /i /y >nul 2>nul

  rem Rename .template.md to .md
  for %%F in ("%MEMORY_BANK_DST%\*.template.md") do (
    set "OLDNAME=%%~nxF"
    set "NEWNAME=!OLDNAME:.template.md=.md!"
    ren "%%F" "!NEWNAME!"
  )

  rem Replace {{DATE}} placeholder
  for %%F in ("%MEMORY_BANK_DST%\*.md") do (
    powershell -NoProfile -Command "$f='%%~fF'; $c=Get-Content -Raw $f; $c=$c.Replace('{{DATE}}','%SYNC_DATE%'); Set-Content -Path $f -Value $c -Encoding UTF8 -NoNewline"
  )
  echo Synced: memory-bank/
) else (
  echo Skip: memory-bank/ templates not found
)

:sync_prompts
rem 2. Sync docs/prompts/
set "PROMPTS_DST=%PROJECT_ROOT%\docs\prompts"
if exist "%PROMPTS_SRC%" (
  if exist "%PROMPTS_DST%" (
    if "%FORCE%"=="0" (
      echo docs/prompts/ already exists. Skip. Use -force to overwrite.
      goto sync_agents
    )
  )
  if not exist "%PROJECT_ROOT%\docs" mkdir "%PROJECT_ROOT%\docs"
  if not exist "%PROMPTS_DST%" mkdir "%PROMPTS_DST%"
  xcopy "%PROMPTS_SRC%\*" "%PROMPTS_DST%\" /e /i /y >nul 2>nul

  rem Rename .template.md to .md recursively
  for /r "%PROMPTS_DST%" %%F in (*.template.md) do (
    set "OLDNAME=%%~nxF"
    set "NEWNAME=!OLDNAME:.template.md=.md!"
    ren "%%F" "!NEWNAME!"
  )

  rem Replace {{DATE}} placeholder
  for /r "%PROMPTS_DST%" %%F in (*.md) do (
    powershell -NoProfile -Command "$f='%%~fF'; $c=Get-Content -Raw $f; $c=$c.Replace('{{DATE}}','%SYNC_DATE%'); Set-Content -Path $f -Value $c -Encoding UTF8 -NoNewline"
  )
  echo Synced: docs/prompts/
) else (
  echo Skip: prompts/ templates not found
)

:sync_agents
rem 3. Sync AGENTS.md
set "AGENTS_DST=%PROJECT_ROOT%\AGENTS.md"

rem Choose markers based on -full flag
if "%FULL%"=="1" (
  set "MARKER_START=<!-- playbook:framework:start -->"
  set "MARKER_END=<!-- playbook:framework:end -->"
  set "SECTION_NAME=framework"
) else (
  set "MARKER_START=<!-- playbook:templates:start -->"
  set "MARKER_END=<!-- playbook:templates:end -->"
  set "SECTION_NAME=templates"
)

if exist "%AGENTS_SRC%" (
  if not exist "%AGENTS_DST%" (
    rem AGENTS.md doesn't exist: create from full template
    copy /y "%AGENTS_SRC%" "%AGENTS_DST%" >nul
    powershell -NoProfile -Command "$f='%AGENTS_DST%'; $c=Get-Content -Raw $f; $c=$c.Replace('{{DATE}}','%SYNC_DATE%'); Set-Content -Path $f -Value $c -Encoding UTF8 -NoNewline"
    echo Created: AGENTS.md
  ) else (
    rem AGENTS.md exists: update or append section (extract from template)
    powershell -NoProfile -Command ^
      "$src='%AGENTS_SRC%'; $dst='%AGENTS_DST%'; $date='%SYNC_DATE%'; " ^
      "$markerStart='!MARKER_START!'; $markerEnd='!MARKER_END!'; $sectionName='!SECTION_NAME!'; " ^
      "$templateContent = Get-Content -Raw $src; " ^
      "$extractPattern = '(?s)(' + [regex]::Escape($markerStart) + '.*?' + [regex]::Escape($markerEnd) + ')'; " ^
      "if ($templateContent -match $extractPattern) { " ^
      "  $snippetContent = $Matches[1]; " ^
      "  $content = Get-Content -Raw $dst; " ^
      "  if ($content -match [regex]::Escape($markerStart)) { " ^
      "    $replacePattern = '(?s)' + [regex]::Escape($markerStart) + '.*?' + [regex]::Escape($markerEnd); " ^
      "    $newContent = $content -replace $replacePattern, $snippetContent; " ^
      "    $newContent = $newContent.Replace('{{DATE}}', $date); " ^
      "    Set-Content -Path $dst -Value $newContent -Encoding UTF8 -NoNewline; " ^
      "    Write-Host \"Updated: AGENTS.md ($sectionName section)\"; " ^
      "  } else { " ^
      "    $newContent = $content.TrimEnd() + \"`n`n\" + $snippetContent; " ^
      "    $newContent = $newContent.Replace('{{DATE}}', $date); " ^
      "    Set-Content -Path $dst -Value $newContent -Encoding UTF8 -NoNewline; " ^
      "    Write-Host \"Appended: AGENTS.md ($sectionName section)\"; " ^
      "  } " ^
      "} else { " ^
      "  Write-Host 'Skip: markers not found in template'; " ^
      "}"
  )
) else (
  echo Skip: AGENTS.template.md not found
)

:sync_agent_rules
rem 4. Sync AGENT_RULES.md
set "AGENT_RULES_DST=%PROJECT_ROOT%\AGENT_RULES.md"
if exist "%AGENT_RULES_SRC%" (
  if exist "%AGENT_RULES_DST%" (
    if "%FORCE%"=="0" (
      echo AGENT_RULES.md already exists. Skip. Use -force to overwrite.
      goto sync_done
    )
  )
  copy /y "%AGENT_RULES_SRC%" "%AGENT_RULES_DST%" >nul
  powershell -NoProfile -Command "$f='%AGENT_RULES_DST%'; $c=Get-Content -Raw $f; $c=$c.Replace('{{DATE}}','%SYNC_DATE%'); Set-Content -Path $f -Value $c -Encoding UTF8 -NoNewline"
  echo Synced: AGENT_RULES.md
) else (
  echo Skip: AGENT_RULES.template.md not found
)

:sync_done
echo.
echo Done.
echo.
echo Next steps:
echo   1. Edit memory-bank\*.md to fill in project-specific content
echo   2. Replace remaining {{PLACEHOLDER}} values
echo   3. Run sync_standards.bat to sync .agents\ rules

endlocal