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Token Raffle
Author: langerz30
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//  Title: Token Raffle
//  Author: Langerz30 - Copyright Joshua Langley All rights reserved 2012.
//  Version: 1.4 (04/12/12)
//  Description: Raffle Ticket Application
//  Based on: Tip Goal - Copyright Chaturbate 2012.

/*jslint continue: true, eqeq: true, plusplus: true, undef: true, sloppy: true, vars: true, white: true */

// vars
var tickets_sold = 0;
var ticket_array = [];
var is_winners = false;
var g_winners; // global because of delayed show winner.

// vars timer
var g_start_time = new Date().getTime();
var g_mins_left = 0;

// Performers Choice Settings.
cb.settings_choices = [
    {name: 'tickets', label: 'Token Raffle Goal (Amount of Tickets)', type: 'int', minValue: 1, defaultValue: 200},
    {name: 'goal_description', label: 'Description of Prizes', type: 'str', minLength: 1, maxLength: 255},
    {name: 'draw_amount', label: 'Amount of Ticket Winners (1-10)', type: 'int', minValue: 1, defaultValue: 1, maxValue: 10},
    {name: 'max_tickets', label: 'Maximum Tickets per User (0 = No Maximum Limit)', type: 'int', minValue: 0, defaultValue: 0},
    {name: 'draw_minutes', label: 'Time Limit (Minutes, 0 = No Time Limit)', type: 'int', defaultValue: 0, minValue: 0, maxValue: 10080},
    {name: 'user_win_many', label: 'Can One User win many times?', type: 'choice', choice1: 'Yes', choice2: 'No', defaultValue: 'No'}
];

// HANDLERS.
// On a persons Tip.
cb.onTip(function(tip) {
    if (is_winners == true)
    {
        return;
    }

    // Enforces a limit on how many tickets a person can get.
    max_tickets = cb.settings.max_tickets;
    if (max_tickets > 0)
    {
        user_tickets = countUserTickets( tip.from_user);
        if ((user_tickets + tip.amount) > max_tickets )
        {
            tip.amount = max_tickets - user_tickets;
            if (tip.amount == 0)
            {
                return;
            }
        }
    }

    // Add the Tickets to the array.
    addTicket(tickets_sold, tip.from_user, tip.amount);

    tickets_sold += tip.amount;
    if (tickets_sold >= cb.settings.tickets) {
        tickets_sold = cb.settings.tickets;

        // If there is no timer then draw winners as per normal.
        drawWinners();
    }

    update_subject();
    cb.drawPanel();
});

// Re-Draw the Panel.
cb.onDrawPanel(function(user) {
    var fields = {
        template: '3_rows_of_labels',
        row1_label: 'Tickets Sold / Left:',
        row1_value: tickets_sold + ' / ' + (cb.settings.tickets - tickets_sold),
        row2_label: 'Winners Drawn:',
        row2_value: cb.settings.draw_amount,
        row3_label: '',
        row3_value: ''
    };

    if (user == null)
    {
        fields.row3_label = 'Owned / Max:';
        fields.row3_value = '0 / ' + cb.settings.max_tickets;
        return fields;
    }

    if (is_winners == true)
    {
        fields.row2_value = 'Finished.';
    }

    // Show the Performer how many minutes remain.
    if (user == cb.room_slug && cb.settings.draw_minutes > 0)
    {
        fields.row3_label = 'Time Left:';
        fields.row3_value = getTimeLeft() + ' left';
        return fields;
    }

    // It's a registered user.
    fields.row3_label = 'Owned / Max:';
    fields.row3_value = countUserTickets(user) + ' / ' + cb.settings.max_tickets;

    return fields;
});

// Draw the Winners.
function drawWinners() {
    // Get the winners of the raffle.
    cb.chatNotice("Raffle Closed - Drawing the winning tickets...");
    g_winners = getWinners();

    // To delay the Winner Announcement and add suspense.
    cb.setTimeout(showWinners, 5000);
    is_winners = true;
    cb.drawPanel();
}

// Timer functions.
function updateTimer() {
    if (is_winners == true)
    {
        return;
    }

    var old_mins_left = g_mins_left;
    var elapsed_time = new Date().getTime() - g_start_time;
    cb.log('elapsed_time: ' + elapsed_time);

    var elapsed_mins = Math.floor(elapsed_time / 60000);
    cb.log('elapsed_mins: ' + elapsed_mins);

    if (elapsed_mins >= cb.settings.draw_minutes)
    {
        drawWinners();
    }

    g_mins_left = cb.settings.draw_minutes - elapsed_mins;
    cb.log('old_mins_left: ' + old_mins_left + ', g_mins_left: ' + g_mins_left);
    if (old_mins_left == 0 || old_mins_left > g_mins_left)
    {
        if (old_mins_left == 0 ||
            (g_mins_left >= 5 && (g_mins_left % 5) == 0) ||
            (g_mins_left > 0 && g_mins_left < 5))
        {
            cb.chatNotice(getTimeLeft() + ' left until the winners are drawn.');
            cb.drawPanel();
        }
    }
    // Grace period of up to 10 seconds.
    cb.setTimeout(updateTimer, 60000);
}

// Returns the time left in minutes as a string.
function getTimeLeft()
{
    if (g_mins_left == 0)
    {
        return 'No time';
    }

    return g_mins_left + ((g_mins_left > 1) ? ' minutes' : ' minute');
}


// HELPER FUNCTIONS

// Update the room subject.
function update_subject() {
    var new_subject = "Raffle Prizes: " + cb.settings.goal_description +
        " [" + tips_remaining() + " Tickets remaining]";
    
    cb.log(new_subject);
    cb.changeRoomSubject(new_subject);
}


// The amount of tips remaining.
function tips_remaining() {
    var r = cb.settings.tickets - tickets_sold;
    return (r < 0) ? 0 : r;
}

// Initialize the application.
function init() {
    update_subject();
    showRules();

    if (cb.settings.draw_minutes > 0)
    {
        updateTimer();
    }
}

init();


// RAFFLE FUNCTIONS

// Show Rules.
function showRules()
{
    if (is_winners == true)
    {
        return;
    }

    var msg = 'RAFFLE TICKET RULES\n';
    msg += 'Cost is 1 Token per Raffle Ticket.\n';
    if (cb.settings.user_win_many == 'No')
    {
        msg += 'One Winner can have only one placing.\n';
    }
    max_tickets = cb.settings.max_tickets;
    if (max_tickets > 0)
    {
        msg += 'Each User can only purchase a maximum of ' + max_tickets + ' tickets. Extra tickets tipped will be deducted as normal.';
    }
    cb.chatNotice(msg);
    cb.setTimeout(showRules, 300000);
}

// Count of the users tickets.
function countUserTickets(username)
{
    var ticket_count, i;
	if (ticket_array.length == 0)
    {
        return 0;
    }

	ticket_count = 0;
	for (i=0; i < ticket_array.length; ++i)
	{
		if (username == ticket_array[i].username)
		{
			++ticket_count;
		}
	}
	return ticket_count;
}

// Add tickets to the ticket array.
function addTicket(tip_index, username, amount)
{
    // to clip tips that overflow the token amount.
    var overflow = (tip_index + amount) - cb.settings.tickets;
    if (overflow > 0)
    {
        amount -= overflow;
    }

    if (amount == 1)
    {
        cb.chatNotice(username + " received Ticket " + (tip_index+1) + ".");
    }
    else
    {
        cb.chatNotice(username + " received Tickets " + (tip_index+1) + "-" + (tip_index+amount) + ".");
    }

    var index, ticket, i;
	for (i=0; i < amount; ++i)
	{
        index = (tip_index + i);
        ticket = {username: username, number: (index+1) };
		ticket_array[index] = ticket;
	}
}

// Generate the Winners of the raffle.
function getWinners()
{
    if (ticket_array.length == 0)
    {
        return [];
    }

    var l_winners = [];
    var draw_amount = cb.settings.draw_amount;
    var raffle_num, ticket, draw;

    if (cb.settings.user_win_many == 'No')
    {
        var l_ticket_array = ticket_array.slice();
        for (draw=0; draw < draw_amount; ++draw)
        {
            // No tickets left so abort.
            if (l_ticket_array.length == 0)
            {
                break;
            }

            // Get a raffle ticket index.
            if (l_ticket_array.length == 1)
            {
                raffle_num = 0;
            }
            else
            {
                raffle_num = getRandomInt (0, (l_ticket_array.length - 1));
            }

            ticket = l_ticket_array[raffle_num];
            l_winners.push(ticket);

            // Remove all the winners other tickets.
            removeTicketsByUser(l_ticket_array, ticket.username);
        }
    }
    else
    {
        // Get the raffle number indexes.
        var raffle_numbers = getUniqueNumbers(draw_amount, 0, (tickets_sold - 1));

        for (draw=0; draw < draw_amount; ++draw)
        {
            raffle_num = raffle_numbers[draw];

            ticket = ticket_array[raffle_num];
            l_winners.push(ticket);
        }
    }
    return l_winners;
}

// Removes the tickets belong to a username.
function removeTicketsByUser(tickets, username)
{
    var i=0;
    while(i < tickets.length)
    {
        if (username == tickets[i].username)
        {
            tickets.splice(i, 1);
        }
        else
        {
            ++i;
        }
    }
}


/**
 * Gets a bunch of random unique numbers specified within the range.
 */
function getUniqueNumbers (count, min, max)
{
    var arr = [], i;
    while(arr.length < count){
        var randomnumber = getRandomInt(min, max);
        var found = false;
        for(i=0;i<arr.length;i++)
        {
            if(arr[i]==randomnumber)
            {
                found = true;
                break;
            }
        }
        if(!found)
        {
            arr[arr.length] = randomnumber;
        }
    }
    return arr;
}


/**
 * Returns a random integer between min and max
 * Using Math.round() will give you a non-uniform distribution!
 */
function getRandomInt (min, max) {
    return Math.floor(Math.random() * (max - min + 1)) + min;
}

// end raffle functions.


// Show the winners.
function showWinners()
{
    //cb.log(g_winners);
    if (g_winners.length == 0)
    {
        cb.chatNotice('There are no Winners for this raffle.');
        return;
    }

    var winner, a;
	var msg = 'The Winners of the raffle are:';
	for (a=0; a < g_winners.length; a++)
	{
		winner = g_winners[a];
		msg += '\nplace ' + (a+1) + '. ' + winner.username + ' (Ticket ' + winner.number + ')';
	}
    cb.chatNotice(msg);
}