/*
ALL OF THIS IS RUNNING IN A COMMAND
 */

// Get Bukkit and PlotSquared player instances
Player player = (Player) sender;
PlotPlayer plotPlayer = PlotPlayer.wrap(player);

int maxPlots = plotPlayer.getAllowedPlots();

int plotsToBuy = 0;
try {
    plotsToBuy = Integer.parseInt(args[0]);
} catch(NumberFormatException e) {
    player.sendMessage(ChatUtils.prefix() + "Please only enter a whole number!");
    return true;
}

if(plotsToBuy == 0) {
    player.sendMessage(ChatUtils.prefix() + "You must buy at least 1 plot!");
    return true;
}

int costOfPlot = CreativeCore.plugin.getConfig().getInt("plot-cost");
// Server currency
int playerCredits = Credits.getAPI().getCredits(player);

if(playerCredits >= plotsToBuy * costOfPlot) {

    if(player.hasPermission("plots.plot." + maxPlots) && maxPlots != 1) {
        // Create permission nodes.
        PermissionNode node = PermissionNode.builder("plots.plot." + plotsToBuy).build();
        PermissionNode oldNode = PermissionNode.builder("plots.plot." + maxPlots).build();

        // Get LP API.
        LuckPerms api = LuckPermsProvider.get();

        final int finalToBuy = plotsToBuy;

        // Add the new permission to the user
        api.getUserManager().loadUser(player.getUniqueId()).thenApply(user ->
                user.data().add(node));

        // Remove the old permission from the user.
        api.getUserManager().loadUser(player.getUniqueId()).thenApply(user ->
                user.data().remove(oldNode)).thenRun(() -> {
            /*
            / Is this code in .thenRun() going to run once the future is complete without blocking?
             */
            Credits.getAPI().setCredits(player, playerCredits - finalToBuy * costOfPlot);

            // Some database stuff on bungee using plugin channels
            int newPlayerCredits = Credits.getAPI().getCredits(player);
            if(finalToBuy == 1) Credits.getAPI().sendCreditsPurchaseHistory(player, "1 Plot", playerCredits, newPlayerCredits);
            else Credits.getAPI().sendCreditsPurchaseHistory(player, finalToBuy + " Plots", playerCredits, newPlayerCredits);

            player.sendMessage(ChatUtils.prefix() + "Successfully bought §a" + finalToBuy + " plots");
        });

        /*/ How would I check if the future failed to complete (such as user not loading, permissions not applying)
        and then send the user a message saying so?
         */
    }
} else {
    player.sendMessage(ChatUtils.prefix() + "You do not have enough credits to buy " + plotsToBuy + " plots.");
}