@echo off
rem ============================================================================
rem  blog full-repo backup - entry point for Windows Task Scheduler
rem
rem  scripts/backup-run.mjs is what gets invoked. It:
rem    - loads .workbuddy-backup\openlist-backup.env
rem    - runs scripts/backup-bundle.mjs (git bundle --all -> AES-256-GCM encrypt
rem      -> WebDAV upload to OpenList on the ZTE F50 -> sha256 readback check)
rem    - emails an alert through scripts/send_mail.js when the backup fails
rem
rem  OpenList is the ONLY off-site copy, so a silent failure would mean running
rem  with no backup at all. Hence failures raise an email instead of just
rem  appending to a log nobody reads.
rem
rem  Notes:
rem    * This file is intentionally pure ASCII. cmd.exe parses a .bat/.cmd using
rem      the *current* code page (GBK on zh-CN) while node emits UTF-8. A UTF-8
rem      Chinese comment can swallow the CR/LF and break the following line
rem      (seen in practice: a rem line got executed as a command). ASCII is a
rem      subset of UTF-8, so plain-English text mixes safely with node output.
rem      For the same reason the alert subject/body (which is Chinese) is built
rem      inside backup-run.mjs, never here.
rem    * node resolution order: PATH -> WorkBuddy managed -> D:\nodejs
rem    * Log appends to .workbuddy-backup\logs\backup.log, rotated at 5 MB
rem    * .workbuddy-backup is git-ignored; logs, passphrase and SMTP creds
rem      never enter git
rem    * Exit code is passed through (0 = success), visible in Task Scheduler
rem ============================================================================
setlocal

set "REPO=%~dp0.."
if "%REPO:~-1%"=="\" set "REPO=%REPO:~0,-1%"
set "LOG=%REPO%\.workbuddy-backup\logs"
set "SCRIPT=%REPO%\scripts\backup-run.mjs"

if not exist "%LOG%" mkdir "%LOG%"

rem --- rotate log at 5 MB. Guarded by if exist: on the very first run the file
rem     does not exist yet and for/f would fail with a "path not found" error ---
if exist "%LOG%\backup.log" for %%F in ("%LOG%\backup.log") do if %%~zF GTR 5242880 move /y "%LOG%\backup.log" "%LOG%\backup.prev.log" >nul 2>&1

rem --- locate node ---
set "NODE="
for %%P in (node.exe) do if not defined NODE set "NODE=%%~$PATH:P"
if not defined NODE if exist "%USERPROFILE%\.workbuddy\binaries\node\versions\22.22.2-6\node.exe" set "NODE=%USERPROFILE%\.workbuddy\binaries\node\versions\22.22.2-6\node.exe"
if not defined NODE if exist "D:\nodejs\node.exe" set "NODE=D:\nodejs\node.exe"

if not defined NODE call :fail "node not found in PATH, WorkBuddy managed dir, or D:\nodejs"
if not exist "%SCRIPT%" call :fail "script not found: %SCRIPT%"

rem --- ASCII timestamp. Do NOT use %date%: on zh-CN it carries localized
rem     weekday text (e.g. Chinese "Tuesday") which would mix encodings ---
set "STAMP=%TIME%"
for /f "delims=" %%I in ('powershell -NoProfile -Command "[DateTime]::Now.ToString('yyyy-MM-dd HH:mm:ss')" 2^>nul') do set "STAMP=%%I"

rem --- arguments: use %* when given (handy for manual runs, e.g. --dry / --list) ---
rem     keep 7 = one week of daily snapshots (~600 MB each, ~4.2 GB total, the
rem     F50 has 256 GB). OpenList is the only off-site copy, so a wider window
rem     is worth the space. Pass --notify-success to also get a daily OK mail.
set "ARGS=%*"
if "%ARGS%"=="" set "ARGS=--verify --keep 7"

echo. >> "%LOG%\backup.log"
echo [%STAMP%] ===== backup start ===== >> "%LOG%\backup.log"
"%NODE%" "%SCRIPT%" %ARGS% >> "%LOG%\backup.log" 2>&1
set "RC=%ERRORLEVEL%"
echo [%STAMP%] ===== backup end, exit=%RC% ===== >> "%LOG%\backup.log"

endlocal & exit /b %RC%

:fail
echo [%TIME%] ERROR: %~1 >> "%LOG%\backup.log"
endlocal & exit /b 1