@echo off
REM ============================================================================
REM  Scoreboard 一键备份（Windows）
REM
REM  用 sqlite3.exe 的 VACUUM INTO 生成一致性快照，服务运行中也能安全执行，
REM  不需要停服务、不需要重启。产物落在 data\backups\，滚动保留最近 20 份。
REM
REM  依赖：sqlite3.exe（放到本脚本同目录、项目根目录，或加入 PATH 均可）。
REM        下载地址 https://www.sqlite.org/download.html 的 sqlite-tools-win-x64。
REM
REM  用法：deploy\backup.bat            手动备份（原因记 manual）
REM        deploy\backup.bat publish    发布前备份（原因记 publish）
REM ============================================================================
setlocal enabledelayedexpansion
chcp 65001 >nul 2>&1

cd /d "%~dp0.."
set "ROOT=%CD%"
set "DATA=%ROOT%\data"
set "OUT=%DATA%\backups"
set "KEEP=20"
set "REASON=manual"

if not "%~1"=="" set "REASON=%~1"
set "REASON=%REASON: =_%"
set "REASON=%REASON:/=-%"
set "REASON=%REASON:\=-%"
set "REASON=%REASON:"=%"

if not exist "%DATA%" (
  echo [错误] 找不到数据目录：%DATA%
  echo         请在项目根目录执行本脚本。
  exit /b 1
)

REM ---- 定位 sqlite3.exe -------------------------------------------------------
set "SQLITE="
if exist "%~dp0sqlite3.exe" set "SQLITE=%~dp0sqlite3.exe"
if not defined SQLITE if exist "%ROOT%\sqlite3.exe" set "SQLITE=%ROOT%\sqlite3.exe"
if not defined SQLITE for %%I in (sqlite3.exe) do if exist "%%~$PATH:I" set "SQLITE=%%~$PATH:I"
if not defined SQLITE (
  echo [错误] 找不到 sqlite3.exe。
  echo         请把它放到 deploy\ 目录或加入 PATH 后重试。
  exit /b 1
)

REM ---- 时间戳：优先 PowerShell，避免受区域设置影响 -----------------------------
set "TS="
for /f "usebackq delims=" %%I in (`powershell -NoProfile -Command "Get-Date -Format yyyyMMdd-HHmmss" 2^>nul`) do set "TS=%%I"
if not defined TS call :fallback_ts
if not defined TS (
  echo [错误] 无法生成时间戳。
  exit /b 1
)

if not exist "%OUT%" mkdir "%OUT%"

echo === Scoreboard 备份 ===
echo 数据目录：%DATA%
echo 备份目录：%OUT%
echo 时间戳  ：%TS%
echo.

set /a OK=0
set /a FAIL=0

if exist "%DATA%\system.db" call :backup "system" "%DATA%\system.db"

for /d %%D in ("%DATA%\event_projs\*") do (
  if exist "%%~fD\event.db" call :backup "%%~nxD" "%%~fD\event.db"
)

echo.
echo === 滚动清理（保留最近 %KEEP% 份）===
set /a N=0
for /f "delims=" %%F in ('dir /b /o-d /a-d "%OUT%\*.db" 2^>nul') do (
  set /a N+=1
  if !N! GTR %KEEP% (
    echo   删除 %%F
    del /f /q "%OUT%\%%F" >nul 2>&1
  )
)

echo.
echo === 备份完成：成功 !OK! 个，失败 !FAIL! 个 ===
dir /b "%OUT%\*.db" 2>nul

if !FAIL! GTR 0 (
  endlocal
  exit /b 1
)
endlocal
exit /b 0

REM ---- 备份单个库：%1 文件名前缀，%2 数据库路径 -------------------------------
:backup
set "PREFIX=%~1"
set "DBFILE=%~2"
set "TARGET=%OUT%\%PREFIX%-%REASON%-%TS%.db"
if exist "%TARGET%" set "TARGET=%OUT%\%PREFIX%-%REASON%-%TS%-%RANDOM%.db"

echo   备份 %DBFILE%
echo        -^> %TARGET%
"%SQLITE%" "%DBFILE%" "VACUUM INTO '%TARGET%'"
if errorlevel 1 (
  echo        [失败] sqlite3 返回错误
  set /a FAIL+=1
) else (
  set /a OK+=1
)
exit /b 0

REM ---- %DATE%/%TIME% 兜底：只保证名字不重复 -----------------------------------
:fallback_ts
set "D=%DATE%"
set "T=%TIME%"
set "D=%D:/=%"
set "D=%D:-=%"
set "D=%D:.=%"
set "T=%T::=%"
set "T=%T:.=%"
set "T=%T: =0%"
set "TS=%D%-%T%"
exit /b 0