/// BookSystem JavaScript Utility Library.
/// HC TECH 2017 Kiritow.
/// Under MIT License

/// Check Login
function mustLogin() {
    $.post("/cgi-bin/booksys/doCheckLogin",{},function(data){
        console.log("CheckLogin Ajax Success");
        if(data.success!=1)
        {
            console.log("Not Logged in.");
            location.href="login.html";
        }
        else
        {
            console.log("Logged in.");
        }
    },"json").fail(function(err){
        console.log("Failed to check login. err:",err);
    });
}

/// Check Permission
/// If level does not matches required_level, callback will be called.
function checkPermission(required_level,callback_failure,callback_success) {
    $.post("/cgi-bin/booksys/doCheckPermission",{required:required_level},function(data){
        console.log("CheckPermission: Ajax Success");
        if(data.success!=1) {
            console.log("CheckPermission: Permission Denied.")
            if(callback_failure!=null) callback_failure();
        } else {
            console.log("CheckPermission: Permission OK.");
            if(callback_success!=null) callback_success();
        }
    },"json").fail(function(err){
        console.log("CheckPermission Ajax Failed.");
    });
}


/// jQueryUI Wrapper
function createHighlight(obj){
    obj.removeClass('ui-state-highlight ui-state-error ui-corner-all');
    obj.addClass('ui-state-highlight ui-corner-all');
    obj.html('<p><span class="ui-icon ui-icon-alert" style="float: left; margin-right:.3em;"></span>'+obj.html()+'</p>');
}

function createError(obj){
    obj.removeClass('ui-state-highlight ui-state-error ui-corner-all');
    obj.addClass('ui-state-error ui-corner-all');
    obj.html('<p><span class="ui-icon ui-icon-alert" style="float: left; margin-right:.3em;"></span>'+obj.html()+'</p>');
}

/// URI Resolver
function GetRequest() { 
    var url = decodeURI(location.search);
    var theRequest = new Object(); 
    if (url.indexOf("?") != -1) { 
        var str = url.substr(1); 
        strs = str.split("&"); 
        for(var i = 0; i < strs.length; i ++) { 
            theRequest[strs[i].split("=")[0]]=unescape(strs[i].split("=")[1]); 
        }
    }
    return theRequest; 
}

/// Route back in browser
function GoBack() {
    window.history.back();
    window.location.reload();
    /// Chrome?
    return false;
}

function GoBackWith(n) {
    window.history.go(-(n));
    window.location.reload();
    /// Chrome?
    return false;
}