/*
 * L2Servers.top — in-game vote reward command (example for L2J Mobius).
 * https://l2servers.top/developers/
 *
 * The player votes on https://l2servers.top/vote/<your-server>/ and then types  .vote  in game.
 * The server asks the L2Servers.top API whether this character (or the player's IP) voted
 * in the last 12 hours and gives the reward once per vote.
 *
 * Install:
 *  1. Save as  dist/game/data/scripts/handlers/voicedcommandhandlers/L2ServersVote.java
 *  2. Register in  handlers/MasterHandler.java  (VOICED_COMMAND_HANDLERS list):  L2ServersVote.class,
 *  3. Set SERVER_ID and API_KEY below (L2Servers.top → your server card → Votes).
 *  4. Rebuild / restart. Requires Java 11+.
 *
 * Other packs (aCis, L2Scripts, Lucera): the logic is the same — adapt the handler interface,
 * the "give item" call and the per-account storage.
 */
package handlers.voicedcommandhandlers;

import java.net.URI;
import java.net.URLEncoder;
import java.net.http.HttpClient;
import java.net.http.HttpRequest;
import java.net.http.HttpResponse;
import java.nio.charset.StandardCharsets;
import java.time.Duration;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

import org.l2jmobius.commons.threads.ThreadPool;
import org.l2jmobius.gameserver.handler.IVoicedCommandHandler;
import org.l2jmobius.gameserver.model.actor.Player;

public class L2ServersVote implements IVoicedCommandHandler
{
	// ---- CONFIG ----
	private static final int SERVER_ID = 0; // Server ID from L2Servers.top
	private static final String API_KEY = "PASTE_YOUR_API_KEY_HERE";
	private static final int[][] REWARD = { { 57, 1_000_000 } }; // { itemId, count }
	// ----------------

	private static final String API = "https://l2servers.top/api/vote-check";
	private static final String VAR = "L2S_VOTE_CLAIMED"; // last claimed voted_at (per account)
	private static final Pattern VOTED_AT = Pattern.compile("\"voted_at\"\\s*:\\s*\"([^\"]+)\"");
	private static final HttpClient HTTP = HttpClient.newBuilder().connectTimeout(Duration.ofSeconds(5)).build();

	private static final String[] COMMANDS = { "vote" };

	@Override
	public boolean useVoicedCommand(String command, Player player, String params)
	{
		player.sendMessage("Checking your vote on L2Servers.top...");
		final String name = player.getName();
		final String ip = (player.getClient() != null) ? player.getClient().getIp() : "";

		// HTTP must not block the game thread.
		ThreadPool.execute(() ->
		{
			String votedAt = check("username", name);
			if (votedAt == null && !ip.isEmpty())
			{
				votedAt = check("ip", ip);
			}

			if (votedAt == null)
			{
				player.sendMessage("No vote found in the last 12 hours. Vote here: https://l2servers.top/top/");
				return;
			}

			synchronized (player)
			{
				if (votedAt.equals(player.getAccountVariables().getString(VAR, "")))
				{
					player.sendMessage("You already received the reward for this vote. Vote again in 12 hours!");
					return;
				}
				player.getAccountVariables().set(VAR, votedAt);
				player.getAccountVariables().storeMe();

				for (int[] item : REWARD)
				{
					// Older Mobius versions: player.addItem("L2ServersVote", item[0], item[1], player, true);
					player.addItem(org.l2jmobius.gameserver.model.item.enums.ItemProcessType.REWARD, item[0], item[1], player, true);
				}
				player.sendMessage("Thank you for voting on L2Servers.top!");
			}
		});
		return true;
	}

	/**
	 * @return voted_at (ISO date) if a vote exists in the last 12 hours, otherwise null.
	 */
	private static String check(String field, String value)
	{
		try
		{
			final String url = API + "?server=" + SERVER_ID + "&key=" + URLEncoder.encode(API_KEY, StandardCharsets.UTF_8) + "&" + field + "=" + URLEncoder.encode(value, StandardCharsets.UTF_8);
			final HttpResponse<String> res = HTTP.send(HttpRequest.newBuilder(URI.create(url)).timeout(Duration.ofSeconds(8)).GET().build(), HttpResponse.BodyHandlers.ofString());
			if ((res.statusCode() != 200) || !res.body().contains("\"voted\":true"))
			{
				return null;
			}
			final Matcher m = VOTED_AT.matcher(res.body());
			return m.find() ? m.group(1) : null;
		}
		catch (Exception e)
		{
			return null;
		}
	}

	@Override
	public String[] getVoicedCommandList()
	{
		return COMMANDS;
	}
}