@echo off
rem ============================================================
rem  dsh-sync resident worker: PostgreSQL + uvicorn with restart
rem  loop. Launched detached by start-server.bat, stopped by
rem  stop-server.bat (stop.flag).
rem  NOTE: keep this file pure ASCII - cmd.exe misparses UTF-8.
rem
rem  Two rules keep this loop sane (both were learned the hard way):
rem   1. Never start uvicorn while :8020 is already served. A second
rem      worker used to spin, each iteration failing to bind and
rem      writing two log lines, ~20/s.
rem   2. Never use `timeout /t N` here. Detached (no console input)
rem      it returns after ~1s instead of N seconds, so the loop has
rem      no real delay. Start-Sleep is used instead.
rem ============================================================
cd /d C:\Users\12914\Desktop\dsh
set DSH_DATA_DIR=C:\Users\12914\Desktop\dsh\data
set DSH_DATABASE_URL=postgresql://dsh@127.0.0.1:15433/postgres
set DSH_BOOTSTRAP_ADMIN_TOKEN=74020d5458c05a43e6abca0ddea020b5
set DSH_INVITE_CODE=d4977f261a7e
set PYTHONPATH=C:\Users\12914\Desktop\dsh\server
set PY=C:\Users\12914\Desktop\dsh\server\.venv\Scripts\python.exe
set PGBIN=C:\Users\12914\Desktop\dsh\.pg\bin
set PGDATA=C:\Users\12914\Desktop\dsh\.pg\data
set DSH_HOST=192.168.5.2
set DSH_PORT=8020
set FAILS=0

if not exist logs mkdir logs

rem --- rotate logs so a failing loop cannot fill the disk ---
for %%f in (logs\server.log logs\uvicorn.log) do (
  if exist %%f if %%~zf GTR 5242880 move /y %%f %%~nf.1%%~xf >nul 2>&1
)

rem --- make sure PostgreSQL is up (once per worker, not per loop) ---
if not exist %PGDATA%\base (
  echo [%date% %time%] initdb... >> logs\server.log
  %PGBIN%\initdb.exe -D %PGDATA% -U dsh -A trust -E UTF8 --no-instructions >nul 2>&1
)
%PGBIN%\pg_ctl.exe -D %PGDATA% -o "-p 15433 -c listen_addresses=127.0.0.1" status >nul 2>&1
if errorlevel 1 (
  echo [%date% %time%] starting PostgreSQL >> logs\server.log
  %PGBIN%\pg_ctl.exe -D %PGDATA% -o "-p 15433 -c listen_addresses=127.0.0.1" -l logs\pg.log start >nul 2>&1
  powershell -NoProfile -Command "Start-Sleep -Seconds 2"
)

:loop
if exist stop.flag (
  del stop.flag
  echo [%date% %time%] stop flag received, worker exiting >> logs\server.log
  goto :eof
)

rem --- singleton guard: an already-served port means another worker owns it.
rem Match "%DSH_HOST%:%DSH_PORT%" - a bare ":8020" also matches the local Django
rem dev stack on 127.0.0.1, which would make this worker idle forever.
netstat -ano | findstr /C:"LISTENING" | findstr /C:"%DSH_HOST%:%DSH_PORT% " >nul
if not errorlevel 1 (
  echo [%date% %time%] port %DSH_PORT% already served, idling >> logs\server.log
  set FAILS=0
  powershell -NoProfile -Command "Start-Sleep -Seconds 20"
  goto :loop
)

echo [%date% %time%] starting uvicorn %DSH_HOST%:%DSH_PORT% >> logs\server.log
%PY% -m uvicorn dsh_sync.main:app --host %DSH_HOST% --port %DSH_PORT% >> logs\uvicorn.log 2>&1
echo [%date% %time%] uvicorn exited (code %errorlevel%), restarting >> logs\server.log

set /a FAILS+=1
if %FAILS% GEQ 5 (
  echo [%date% %time%] %FAILS% consecutive exits, backing off 60s >> logs\server.log
  powershell -NoProfile -Command "Start-Sleep -Seconds 60"
) else (
  powershell -NoProfile -Command "Start-Sleep -Seconds 3"
)
goto :loop