@echo off
setlocal EnableDelayedExpansion

REM Build api/player/admin images and export as tar (Windows CMD).
REM Usage:
REM   docs\docker\build-and-export-images.bat
REM   docs\docker\build-and-export-images.bat --tag v1.2.3
REM   docs\docker\build-and-export-images.bat --use-cache
REM   docs\docker\build-and-export-images.bat --export-only

cd /d "%~dp0..\.."

set "COMPOSE_FILE=docker-compose.prod.yml"
set "ENV_FILE=.env.docker"
set "OUTPUT="
set "NO_CACHE=1"
set "EXPORT_ONLY=0"
if defined IMAGE_TAG (set "TAG=%IMAGE_TAG%") else (set "TAG=")

:parse_args
if "%~1"=="" goto args_done
if /i "%~1"=="--tag" goto parse_tag
if /i "%~1"=="--use-cache" set "NO_CACHE=0" & shift & goto parse_args
if /i "%~1"=="--export-only" set "EXPORT_ONLY=1" & shift & goto parse_args
if /i "%~1"=="--output" goto parse_output
if /i "%~1"=="-h" goto show_help
if /i "%~1"=="--help" goto show_help
if /i "%~1"=="/?" goto show_help
echo Unknown argument: %~1
goto show_help

:parse_tag
if "%~2"=="" (
  echo ERROR: missing value for --tag
  exit /b 1
)
set "TAG=%~2"
shift
shift
goto parse_args

:parse_output
if "%~2"=="" (
  echo ERROR: missing value for --output
  exit /b 1
)
set "OUTPUT=%~2"
shift
shift
goto parse_args

:show_help
echo.
echo Usage: docs\docker\build-and-export-images.bat [options]
echo.
echo   --tag TAG        Image tag (default: git short commit)
echo   --use-cache      Use Docker build cache
echo   --export-only    Skip build, export existing images only
echo   --output PATH    Output tar path
echo   -h, --help       Show help
echo.
exit /b 0

:args_done
if not exist "%COMPOSE_FILE%" (
  echo ERROR: missing %COMPOSE_FILE% in %CD%
  exit /b 1
)

if not exist "%ENV_FILE%" (
  if exist ".env.docker.example" (
    echo WARN: using .env.docker.example instead of .env.docker
    set "ENV_FILE=.env.docker.example"
  ) else (
    echo ERROR: missing .env.docker and .env.docker.example
    exit /b 1
  )
)

if not defined TAG call :default_tag
if not defined TAG (
  echo ERROR: unable to determine image tag
  exit /b 1
)

call :validate_tag
if errorlevel 1 exit /b 1

if not defined OUTPUT set "OUTPUT=thebet365-images-%TAG%.tar"

set "OUTPUT_PATH=%OUTPUT%"
echo %OUTPUT_PATH%| findstr /r "^[A-Za-z]:\\" >nul
if errorlevel 1 set "OUTPUT_PATH=%CD%\%OUTPUT%"

where docker >nul 2>&1
if errorlevel 1 (
  echo ERROR: docker not found. Start Docker Desktop first.
  exit /b 1
)

if "%EXPORT_ONLY%"=="0" goto do_build
goto do_export

:do_build
echo ==^> Building api, player, admin (tag: %TAG%)
set "IMAGE_TAG=%TAG%"
if "%NO_CACHE%"=="1" goto build_no_cache
docker compose -f "%COMPOSE_FILE%" --env-file "%ENV_FILE%" build api player admin
goto build_done

:build_no_cache
docker compose -f "%COMPOSE_FILE%" --env-file "%ENV_FILE%" build --no-cache api player admin

:build_done
if errorlevel 1 (
  echo ERROR: docker build failed
  exit /b 1
)

:do_export
echo ==^> Exporting images to %OUTPUT_PATH%
docker save thebet365-api:%TAG% thebet365-player:%TAG% thebet365-admin:%TAG% -o "%OUTPUT_PATH%"
if errorlevel 1 (
  echo ERROR: docker save failed
  exit /b 1
)

if /i "%OUTPUT_PATH:~-4%"==".tar" (
  set "MANIFEST_PATH=%OUTPUT_PATH:~0,-4%.manifest.txt"
) else (
  set "MANIFEST_PATH=%OUTPUT_PATH%.manifest.txt"
)

call :collect_git_info
call :collect_built_at
call :collect_tar_sha256
call :collect_image_ids

for %%F in ("%OUTPUT_PATH%") do set "TAR_NAME=%%~nxF"
for %%F in ("%OUTPUT_PATH%") do set /a SIZE_MB=%%~zF/1048576

> "%MANIFEST_PATH%" (
  echo tag=%TAG%
  echo built_at=!BUILT_AT!
  echo git_commit=!GIT_COMMIT!
  echo git_dirty=!GIT_DIRTY!
  echo tar=!TAR_NAME!
  echo tar_sha256=!TAR_SHA256!
  echo api_image=thebet365-api:%TAG%
  echo api_image_id=!API_IMAGE_ID!
  echo player_image=thebet365-player:%TAG%
  echo player_image_id=!PLAYER_IMAGE_ID!
  echo admin_image=thebet365-admin:%TAG%
  echo admin_image_id=!ADMIN_IMAGE_ID!
)

echo Done: %OUTPUT_PATH% ^(!SIZE_MB! MB^)
echo Manifest: %MANIFEST_PATH%
echo.
echo Server first deploy:
echo   ./scripts/deploy-first.sh --images !TAR_NAME! --tag %TAG%
echo.
echo Server update:
echo   ./scripts/deploy-update.sh --images !TAR_NAME! --tag %TAG%
echo.

endlocal
exit /b 0

:default_tag
for /f "delims=" %%T in ('git rev-parse --short HEAD 2^>nul') do set "TAG=%%T"
if defined TAG exit /b 0
for /f "delims=" %%T in ('powershell -NoProfile -Command "Get-Date -Format yyyyMMdd-HHmmss"') do set "TAG=%%T"
exit /b 0

:validate_tag
echo %TAG%| findstr /r "^[A-Za-z0-9_][A-Za-z0-9_.-]*$" >nul
if errorlevel 1 (
  echo ERROR: invalid image tag: %TAG%
  exit /b 1
)
exit /b 0

:collect_git_info
set "GIT_COMMIT=unknown"
set "GIT_DIRTY=unknown"
for /f "delims=" %%C in ('git rev-parse HEAD 2^>nul') do set "GIT_COMMIT=%%C"
git diff --quiet 2>nul
set "DIFF_EXIT=!ERRORLEVEL!"
git diff --cached --quiet 2>nul
set "CACHED_EXIT=!ERRORLEVEL!"
if "!DIFF_EXIT!"=="0" if "!CACHED_EXIT!"=="0" set "GIT_DIRTY=false"
if not "!GIT_COMMIT!"=="unknown" if not "!GIT_DIRTY!"=="false" set "GIT_DIRTY=true"
exit /b 0

:collect_built_at
set "BUILT_AT=unknown"
for /f "delims=" %%T in ('powershell -NoProfile -Command "(Get-Date).ToUniversalTime().ToString('yyyy-MM-ddTHH:mm:ssZ')"') do set "BUILT_AT=%%T"
exit /b 0

:collect_tar_sha256
set "TAR_SHA256=unavailable"
for /f "usebackq delims=" %%H in (`certutil -hashfile "%OUTPUT_PATH%" SHA256 ^| findstr /r "^[0-9a-fA-F][0-9a-fA-F]"`) do set "TAR_SHA256=%%H"
if defined TAR_SHA256 set "TAR_SHA256=!TAR_SHA256: =!"
exit /b 0

:collect_image_ids
set "API_IMAGE_ID="
set "PLAYER_IMAGE_ID="
set "ADMIN_IMAGE_ID="
for /f "delims=" %%I in ('docker image inspect thebet365-api:%TAG% --format "{{.Id}}" 2^>nul') do set "API_IMAGE_ID=%%I"
for /f "delims=" %%I in ('docker image inspect thebet365-player:%TAG% --format "{{.Id}}" 2^>nul') do set "PLAYER_IMAGE_ID=%%I"
for /f "delims=" %%I in ('docker image inspect thebet365-admin:%TAG% --format "{{.Id}}" 2^>nul') do set "ADMIN_IMAGE_ID=%%I"
exit /b 0