package dev.viper.eventengine.command;

import dev.viper.eventengine.EventEngine;
import dev.viper.eventengine.model.EventDefinition;
import dev.viper.eventengine.model.EventRegion;
import org.bukkit.entity.Player;

import java.util.HashMap;
import java.util.Map;
import java.util.UUID;

/**
 * Stellt Pos1/Pos2-Auswahl für Event-Regionen bereit.
 * Eingebaut in EventCommand via sub-commands:
 *
 *   /event region pos1 <id>      → Pos1 auf Spieler-Position setzen
 *   /event region pos2 <id>      → Pos2 setzen + Region speichern
 *   /event region clear <id>     → Region entfernen
 *   /event region info <id>      → Region anzeigen
 */
public class RegionSetupManager {

    private final EventEngine plugin;
    // Temporäre Pos1-Speicher pro Spieler: UUID → [eventId, Location]
    private final Map<UUID, Object[]> pos1Selection = new HashMap<>();
    private final Map<UUID, Object[]> startPos1Selection = new HashMap<>();
    private final Map<UUID, Object[]> goalPos1Selection = new HashMap<>();

    public RegionSetupManager(EventEngine plugin) {
        this.plugin = plugin;
    }

    public void handlePos1(Player player, String eventId) {
        EventDefinition def = plugin.getEventRegistry().get(eventId).orElse(null);
        if (def == null) { player.sendMessage(plugin.prefix() + "§cEvent nicht gefunden: §f" + eventId); return; }

        pos1Selection.put(player.getUniqueId(), new Object[]{eventId, player.getLocation().clone()});
        player.sendMessage(plugin.prefix() + "§aPos1 gesetzt: §f" + formatLoc(player));
        player.sendMessage(plugin.prefix() + "§7Jetzt: §f/event region pos2 " + eventId);
    }

    public void handlePos2(Player player, String eventId) {
        EventDefinition def = plugin.getEventRegistry().get(eventId).orElse(null);
        if (def == null) { player.sendMessage(plugin.prefix() + "§cEvent nicht gefunden: §f" + eventId); return; }

        Object[] sel = pos1Selection.get(player.getUniqueId());
        if (sel == null || !sel[0].equals(eventId)) {
            player.sendMessage(plugin.prefix() + "§cZuerst Pos1 setzen: §f/event region pos1 " + eventId);
            return;
        }

        org.bukkit.Location pos1 = (org.bukkit.Location) sel[1];
        org.bukkit.Location pos2 = player.getLocation().clone();

        if (!pos1.getWorld().equals(pos2.getWorld())) {
            player.sendMessage(plugin.prefix() + "§cBeide Positionen müssen in der gleichen Welt sein!");
            return;
        }

        EventRegion region = new EventRegion(pos1, pos2);
        def.setRegion(region);

        // Custom Events direkt speichern; builtin: in memory (gilt bis Reload)
        if (def.isCustom()) plugin.getConfigManager().saveCustomEvent(def);

        pos1Selection.remove(player.getUniqueId());

        player.sendMessage(plugin.prefix() + "§a✔ Region gesetzt für §e" + def.getDisplayName() + "§a:");
        player.sendMessage("§7  Welt:  §f" + region.getWorldName());
        player.sendMessage("§7  Von:   §f" + region.getMinX() + ", " + region.getMinY() + ", " + region.getMinZ());
        player.sendMessage("§7  Bis:   §f" + region.getMaxX() + ", " + region.getMaxY() + ", " + region.getMaxZ());
        player.sendMessage("§7  Größe: §f" + region.getSizeX() + "x" + region.getSizeY() + "x" + region.getSizeZ());
    }

    public void handleClear(Player player, String eventId) {
        EventDefinition def = plugin.getEventRegistry().get(eventId).orElse(null);
        if (def == null) { player.sendMessage(plugin.prefix() + "§cEvent nicht gefunden: §f" + eventId); return; }
        def.setRegion(null);
        if (def.isCustom()) plugin.getConfigManager().saveCustomEvent(def);
        player.sendMessage(plugin.prefix() + "§7Region für §e" + def.getDisplayName() + " §7entfernt (gesamte Welt).");
    }

    public void handleStartPos1(Player player, String eventId) {
        EventDefinition def = plugin.getEventRegistry().get(eventId).orElse(null);
        if (def == null) { player.sendMessage(plugin.prefix() + "§cEvent nicht gefunden: §f" + eventId); return; }

        startPos1Selection.put(player.getUniqueId(), new Object[]{eventId, player.getLocation().clone()});
        player.sendMessage(plugin.prefix() + "§aStart-Pos1 gesetzt: §f" + formatLoc(player));
        player.sendMessage(plugin.prefix() + "§7Jetzt: §f/event race start pos2 " + eventId);
    }

    public void handleStartPos2(Player player, String eventId) {
        EventDefinition def = plugin.getEventRegistry().get(eventId).orElse(null);
        if (def == null) { player.sendMessage(plugin.prefix() + "§cEvent nicht gefunden: §f" + eventId); return; }

        Object[] sel = startPos1Selection.get(player.getUniqueId());
        if (sel == null || !sel[0].equals(eventId)) {
            player.sendMessage(plugin.prefix() + "§cZuerst Start-Pos1 setzen: §f/event race start pos1 " + eventId);
            return;
        }

        org.bukkit.Location pos1 = (org.bukkit.Location) sel[1];
        org.bukkit.Location pos2 = player.getLocation().clone();

        if (!pos1.getWorld().equals(pos2.getWorld())) {
            player.sendMessage(plugin.prefix() + "§cBeide Positionen müssen in der gleichen Welt sein!");
            return;
        }

        EventRegion region = new EventRegion(pos1, pos2);
        def.setStartRegion(region);
        if (def.isCustom()) plugin.getConfigManager().saveCustomEvent(def);
        startPos1Selection.remove(player.getUniqueId());

        player.sendMessage(plugin.prefix() + "§a✔ Startbereich gesetzt für §e" + def.getDisplayName() + "§a:");
        sendRegionInfo(player, region);
    }

    public void handleStartClear(Player player, String eventId) {
        EventDefinition def = plugin.getEventRegistry().get(eventId).orElse(null);
        if (def == null) { player.sendMessage(plugin.prefix() + "§cEvent nicht gefunden: §f" + eventId); return; }
        def.setStartRegion(null);
        if (def.isCustom()) plugin.getConfigManager().saveCustomEvent(def);
        player.sendMessage(plugin.prefix() + "§7Startbereich für §e" + def.getDisplayName() + " §7entfernt.");
    }

    public void handleStartInfo(Player player, String eventId) {
        EventDefinition def = plugin.getEventRegistry().get(eventId).orElse(null);
        if (def == null) { player.sendMessage(plugin.prefix() + "§cEvent nicht gefunden: §f" + eventId); return; }
        if (!def.hasStartRegion()) {
            player.sendMessage(plugin.prefix() + "§e" + def.getDisplayName() + " §7hat keinen Startbereich.");
            return;
        }
        player.sendMessage("§8§m══════════════════════════════");
        player.sendMessage("§6  Startbereich: §e" + def.getDisplayName());
        sendRegionInfo(player, def.getStartRegion());
        player.sendMessage("§8§m══════════════════════════════");
    }

    public void handleGoalPos1(Player player, String eventId) {
        EventDefinition def = plugin.getEventRegistry().get(eventId).orElse(null);
        if (def == null) { player.sendMessage(plugin.prefix() + "§cEvent nicht gefunden: §f" + eventId); return; }

        goalPos1Selection.put(player.getUniqueId(), new Object[]{eventId, player.getLocation().clone()});
        player.sendMessage(plugin.prefix() + "§aZiel-Pos1 gesetzt: §f" + formatLoc(player));
        player.sendMessage(plugin.prefix() + "§7Jetzt: §f/event race goal pos2 " + eventId);
    }

    public void handleGoalPos2(Player player, String eventId) {
        EventDefinition def = plugin.getEventRegistry().get(eventId).orElse(null);
        if (def == null) { player.sendMessage(plugin.prefix() + "§cEvent nicht gefunden: §f" + eventId); return; }

        Object[] sel = goalPos1Selection.get(player.getUniqueId());
        if (sel == null || !sel[0].equals(eventId)) {
            player.sendMessage(plugin.prefix() + "§cZuerst Ziel-Pos1 setzen: §f/event race goal pos1 " + eventId);
            return;
        }

        org.bukkit.Location pos1 = (org.bukkit.Location) sel[1];
        org.bukkit.Location pos2 = player.getLocation().clone();

        if (!pos1.getWorld().equals(pos2.getWorld())) {
            player.sendMessage(plugin.prefix() + "§cBeide Positionen müssen in der gleichen Welt sein!");
            return;
        }

        EventRegion region = new EventRegion(pos1, pos2);
        def.setGoalRegion(region);
        if (def.isCustom()) plugin.getConfigManager().saveCustomEvent(def);
        goalPos1Selection.remove(player.getUniqueId());

        player.sendMessage(plugin.prefix() + "§a✔ Zielbereich gesetzt für §e" + def.getDisplayName() + "§a:");
        sendRegionInfo(player, region);
    }

    public void handleGoalClear(Player player, String eventId) {
        EventDefinition def = plugin.getEventRegistry().get(eventId).orElse(null);
        if (def == null) { player.sendMessage(plugin.prefix() + "§cEvent nicht gefunden: §f" + eventId); return; }
        def.setGoalRegion(null);
        if (def.isCustom()) plugin.getConfigManager().saveCustomEvent(def);
        player.sendMessage(plugin.prefix() + "§7Zielbereich für §e" + def.getDisplayName() + " §7entfernt.");
    }

    public void handleGoalInfo(Player player, String eventId) {
        EventDefinition def = plugin.getEventRegistry().get(eventId).orElse(null);
        if (def == null) { player.sendMessage(plugin.prefix() + "§cEvent nicht gefunden: §f" + eventId); return; }
        if (!def.hasGoalRegion()) {
            player.sendMessage(plugin.prefix() + "§e" + def.getDisplayName() + " §7hat keinen Zielbereich.");
            return;
        }
        player.sendMessage("§8§m══════════════════════════════");
        player.sendMessage("§6  Zielbereich: §e" + def.getDisplayName());
        sendRegionInfo(player, def.getGoalRegion());
        player.sendMessage("§8§m══════════════════════════════");
    }

    public void handleInfo(Player player, String eventId) {
        EventDefinition def = plugin.getEventRegistry().get(eventId).orElse(null);
        if (def == null) { player.sendMessage(plugin.prefix() + "§cEvent nicht gefunden: §f" + eventId); return; }
        if (!def.hasRegion()) {
            player.sendMessage(plugin.prefix() + "§e" + def.getDisplayName() + " §7hat keine Region (gesamte Welt).");
            return;
        }
        EventRegion r = def.getRegion();
        player.sendMessage("§8§m══════════════════════════════");
        player.sendMessage("§6  Region: §e" + def.getDisplayName());
        player.sendMessage("§7  Welt:   §f" + r.getWorldName());
        player.sendMessage("§7  Von:    §f" + r.getMinX() + ", " + r.getMinY() + ", " + r.getMinZ());
        player.sendMessage("§7  Bis:    §f" + r.getMaxX() + ", " + r.getMaxY() + ", " + r.getMaxZ());
        player.sendMessage("§7  Größe:  §f" + r.getSizeX() + "×" + r.getSizeY() + "×" + r.getSizeZ() + " Blöcke");
        player.sendMessage("§8§m══════════════════════════════");
    }

    private String formatLoc(Player p) {
        return p.getWorld().getName() + " "
                + p.getLocation().getBlockX() + ", "
                + p.getLocation().getBlockY() + ", "
                + p.getLocation().getBlockZ();
    }

    private void sendRegionInfo(Player player, EventRegion region) {
        player.sendMessage("§7  Welt:  §f" + region.getWorldName());
        player.sendMessage("§7  Von:   §f" + region.getMinX() + ", " + region.getMinY() + ", " + region.getMinZ());
        player.sendMessage("§7  Bis:   §f" + region.getMaxX() + ", " + region.getMaxY() + ", " + region.getMaxZ());
        player.sendMessage("§7  Größe: §f" + region.getSizeX() + "x" + region.getSizeY() + "x" + region.getSizeZ());
    }
}