User:Anomie/lockout.js

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Documentation for this user script can be added at User:Anomie/lockout.

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/* Forbid access using this account on weekdays from 7:20am to 7:40am local time. */
(function(){
    if(!document.body){
        // Page not loaded yet!
        setTimeout(arguments.callee, 100);
        return;
    }

    var s=7*3600+20*60; // Start lockout time, in seconds
    var e=7*3600+40*60; // End lockout time, in seconds
    var dt=new Date();
    var t=dt.getHours()*3600+dt.getMinutes()*60+dt.getSeconds();

    var wd=dt.getDay()%7;
    if(wd==0 || wd==6){
        // Not a weekday, clear lockout and wait until later
        setTimeout(arguments.callee, Math.min(600000,86400-t)*1000);
        document.body.style.display='';
        return;
    }
    if(t<s){
        // Not time yet, clear lockout and try again later
        setTimeout(arguments.callee, Math.min(600000,s-t)*1000);
        document.body.style.display='';
        return;
    }
    if(t>=e){
        // Time past, clear lockout and wait until later
        setTimeout(arguments.callee, Math.min(600000,86400-t)*1000);
        document.body.style.display='';
        return;
    }
    
    // Lock out! And repeat the check every second so I can't just firebug my
    // way past it.
    document.body.style.display='none';
    setTimeout(arguments.callee, 1000);
})();