package com.xeroth.xeroanticheat.manager;

import com.xeroth.xeroanticheat.XeroAntiCheat;
import com.xeroth.xeroanticheat.check.Check;
import com.xeroth.xeroanticheat.data.PlayerData;
import net.kyori.adventure.text.Component;
import net.kyori.adventure.text.minimessage.MiniMessage;
import org.bukkit.Bukkit;
import org.bukkit.command.CommandSender;
import org.bukkit.entity.Player;

import java.io.File;
import java.io.FileWriter;
import java.io.IOException;
import java.io.PrintWriter;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.Set;
import java.util.UUID;
import java.util.logging.Level;

/**
 * Handles punishment execution and logging.
 */
public class PunishmentManager {

    private final XeroAntiCheat plugin;
    private final ViolationManager violationManager;
    
    private final MiniMessage miniMessage = MiniMessage.miniMessage();
    private SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
    
    private File logsFolder;
    private File punishmentsLog;

    public PunishmentManager(XeroAntiCheat plugin, ViolationManager violationManager) {
        this.plugin = plugin;
        this.violationManager = violationManager;
        initializeLogs();
    }

    private void initializeLogs() {
        logsFolder = new File(plugin.getDataFolder(), "logs");
        if (!logsFolder.exists()) {
            logsFolder.mkdirs();
        }
        
        punishmentsLog = new File(logsFolder, "punishments.log");
        if (!punishmentsLog.exists()) {
            try {
                punishmentsLog.createNewFile();
            } catch (IOException e) {
                plugin.getLogger().log(Level.SEVERE, "Could not create punishments log", e);
            }
        }
    }

    /**
     * Evaluate violations and apply appropriate punishment
     */
    public void evaluate(Player player, String checkName) {
        if (!plugin.getConfigManager().isEnabled()) return;
        
        PlayerData data = violationManager.getPlayerData(player);
        if (data == null) return;
        
        double vl = data.getViolationLevel(checkName);
        
        String checkPath = "checks." + checkName.toLowerCase() + ".";
        
        int warnVl = plugin.getConfigManager().getInt(checkPath + "warn_vl", 10);
        int kickVl = plugin.getConfigManager().getInt(checkPath + "kick_vl", 25);
        int tempbanVl = plugin.getConfigManager().getInt(checkPath + "tempban_vl", 50);
        int permbanVl = plugin.getConfigManager().getInt(checkPath + "permban_vl", 100);
        
        Check check = plugin.getCheckManager().getCheck(checkName);
        String category = check != null ? check.getCategory() : "misc";
        
        long cooldownMs = plugin.getConfigManager().getInt("alerts.cooldown_ms", 5000);
        long now = System.currentTimeMillis();
        long lastWarn = data.getLastWarnTime(checkName);
        boolean cooledDown = (now - lastWarn) >= cooldownMs;
        
        boolean isPunishment = vl >= kickVl;
        
        if (cooledDown || isPunishment) {
            sendAlert(player, checkName, vl, category);
            data.setLastWarnTime(checkName, now);
        }
        
        if (vl >= permbanVl) {
            punish(player, checkName, "PERMBAN", permbanVl);
        } else if (vl >= tempbanVl) {
            punish(player, checkName, "TEMPBAN", tempbanVl);
        } else if (vl >= kickVl) {
            punish(player, checkName, "KICK", kickVl);
        } else if (vl >= warnVl && cooledDown) {
            warn(player, checkName);
        }
    }

    /**
     * Send warning to player
     */
    private void warn(Player player, String checkName) {
        Component message = miniMessage.deserialize(
            "<red>Warning: <white>Suspicious behavior detected (" + checkName + ")"
        );
        player.sendMessage(message);
    }

    /**
     * Apply punishment based on type
     */
    private void punish(Player player, String checkName, String type, double vl) {
        String reason = plugin.getConfigManager().getString("punishments.default_reason", "Suspicious activity");
        String playerName = player.getName();
        
        switch (type) {
            case "KICK" -> {
                String kickCmd = plugin.getConfigManager().getString("punishments.kick_command", 
                    "kick %player% &c[XAC] Illegal activity detected");
                kickCmd = kickCmd.replace("%player%", playerName).replace("%reason%", reason);
                executeCommand(kickCmd);
                logPunishment(type, player, checkName, vl);
                plugin.getMetricsManager().recordPunishment();
            }
            case "TEMPBAN" -> {
                String tempbanCmd = plugin.getConfigManager().getString("punishments.tempban_command",
                    "tempban %player% 30d %reason%");
                tempbanCmd = tempbanCmd.replace("%player%", playerName).replace("%reason%", reason);
                executeCommand(tempbanCmd);
                logPunishment(type, player, checkName, vl);
                plugin.getMetricsManager().recordPunishment();
            }
            case "PERMBAN" -> {
                String permbanCmd = plugin.getConfigManager().getString("punishments.permban_command",
                    "ban %player% %reason%");
                permbanCmd = permbanCmd.replace("%player%", playerName).replace("%reason%", reason);
                executeCommand(permbanCmd);
                logPunishment(type, player, checkName, vl);
                plugin.getMetricsManager().recordPunishment();
            }
        }
    }

    /**
     * Execute a console command
     */
    private void executeCommand(String command) {
        final String cmd = command.startsWith("/") ? command.substring(1) : command;
        Bukkit.getScheduler().runTask(plugin, () -> {
            Bukkit.dispatchCommand(Bukkit.getConsoleSender(), cmd);
        });
    }

    /**
     * Send alert to staff members
     */
    public void sendAlert(Player player, String checkName, double vl, String category) {
        if (!plugin.getConfigManager().isAlertsEnabled()) return;
        
        String format = plugin.getConfigManager().getAlertsFormat();
        format = format.replace("%player%", player.getName())
                      .replace("%check%", checkName)
                      .replace("%vl%", String.valueOf((int) vl))
                      .replace("%category%", category);
        
        Component message = miniMessage.deserialize(format);
        
        String categoryPerm = "xac.alerts." + category;
        
        for (Player staff : Bukkit.getOnlinePlayers()) {
            boolean hasPermission = staff.hasPermission("xac.alerts")
                    || staff.hasPermission("xac.admin")
                    || staff.hasPermission(categoryPerm);
            if (!hasPermission) continue;
            if (!plugin.isAlertsEnabled(staff.getUniqueId())) continue;
            staff.sendMessage(message);
        }
        
        plugin.getLogger().info(
            player.getName() + " failed " + checkName
            + " [" + category + "] (VL: " + (int) vl + ")"
        );
    }

    /**
     * Log punishment to file and database
     */
    private void logPunishment(String type, Player player, String checkName, double vl) {
        final String timestamp = dateFormat.format(new Date());
        final String playerName = player.getName();
        final String playerUuid = player.getUniqueId().toString();

        final String logLine = String.format("[%s] %s | %s | %s | %s | %.1f",
            timestamp,
            type,
            playerName,
            playerUuid,
            checkName,
            vl);

        Bukkit.getScheduler().runTaskAsynchronously(plugin, () -> {
            try (FileWriter fw = new FileWriter(punishmentsLog, true);
                 PrintWriter pw = new PrintWriter(fw)) {
                pw.println(logLine);
            } catch (IOException e) {
                plugin.getLogger().log(Level.WARNING, "Could not write to punishments log", e);
            }

            DatabaseManager db = plugin.getDatabaseManager();
            boolean dbEnabled = plugin.getConfigManager().getBoolean("database.enabled", true);
            if (db != null && db.isAvailable() && dbEnabled) {
                db.insertPunishment(timestamp, type, playerUuid, playerName, checkName, vl);
            }
        });
    }

    /**
     * Manually punish a player for a check
     */
    public void manualPunish(Player player, String checkName) {
        PlayerData data = violationManager.getPlayerData(player);
        if (data == null) return;
        
        // Set VL to kick threshold and evaluate
        data.setViolationLevel(checkName, plugin.getConfigManager().getInt("checks." + checkName.toLowerCase() + ".kick_vl", 25));
        evaluate(player, checkName);
    }
}