;AoC_day := 13
AoC_session := "513616c74a42205f6b453616c74a42205f6b4b1" ; <- not my real session
AoC_file := Format("day{}_input.txt",(AoC_day && A_Year==2020)?AoC_day:(A_DD*1))

if !FileExist(AoC_file) {
    cookie := Format("session={}; domain=.adventofcode.com; HttpOnly",AoC_session)
    url := Format("https://adventofcode.com/2020/day/{}/input",(AoC_day && A_Year==2020)?AoC_day:(A_DD*1))
    try {
        hObj := ComObjCreate("WinHTTP.WinHttpRequest.5.1")
        hObj.open("GET",url,false)
        hObj.SetRequestHeader("Cookie", cookie)
        hObj.send()
        OutputDebug, % Format("Success! Received Input data: {} characters.",StrLen(hObj.responseText))
        FileAppend, % SubStr(hObj.responseText,1,-1), % AoC_file
    } catch e {
        OutputDebug, % Format("Error[{}]: {} {} {}",,e.line,e.message,e.extra,e.what)
    }
}