@echo off
setlocal

set DOMAIN=pragma.academic-ruc.cc
set CF_IP=104.21.2.164
set HOSTS=%SystemRoot%\System32\drivers\etc\hosts

net session >nul 2>&1
if %errorlevel% neq 0 (
    echo Requesting administrator privileges...
    powershell -NoProfile -ExecutionPolicy Bypass -Command "Start-Process '%~f0' -Verb RunAs"
    exit /b
)

echo.
echo === pragma DNS temporary fix ===
echo Domain: %DOMAIN%
echo Cloudflare IP: %CF_IP%
echo.
echo This script adds a temporary hosts entry and flushes DNS cache.
echo If the site later stops resolving, remove the old hosts entry first.
echo.

findstr /C:"%DOMAIN%" "%HOSTS%" >nul 2>&1
if %errorlevel% equ 0 (
    echo Existing hosts entry:
    findstr /C:"%DOMAIN%" "%HOSTS%"
    echo.
    echo No changes made. Remove the old entry manually if it is outdated.
    pause
    exit /b
)

echo.>> "%HOSTS%"
echo # Cloudflare pragma - temporary DNS fix>> "%HOSTS%"
echo %CF_IP% %DOMAIN%>> "%HOSTS%"

echo Flushing DNS cache...
ipconfig /flushdns

echo.
echo Done. Restart your browser, Claude Code, Codex CLI, or Cherry Studio.
echo.
pause