package com.example.livedashboard;

import com.example.livedashboard.overlay.GpsPathOverlay;
import com.example.livedashboard.pathfinding.Pathfinder;
import com.example.livedashboard.pathfinding.ShortcutData;
import com.example.livedashboard.ui.LiveDashboardPanel;
import com.google.inject.Provides;
import java.awt.image.BufferedImage;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Collections;
import java.util.HashMap;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;
import javax.inject.Inject;
import lombok.Getter;
import lombok.Setter;
import lombok.extern.slf4j.Slf4j;
import net.runelite.api.Client;
import net.runelite.api.EquipmentInventorySlot;
import net.runelite.api.GameState;
import net.runelite.api.InventoryID;
import net.runelite.api.Item;
import net.runelite.api.ItemComposition;
import net.runelite.api.ItemContainer;
import net.runelite.api.Player;
import net.runelite.api.Skill;
import net.runelite.api.coords.LocalPoint;
import net.runelite.api.coords.WorldPoint;
import net.runelite.api.events.GameStateChanged;
import net.runelite.api.events.GameTick;
import net.runelite.api.events.ItemContainerChanged;
import net.runelite.client.callback.ClientThread;
import net.runelite.client.config.ConfigManager;
import net.runelite.client.eventbus.Subscribe;
import net.runelite.client.events.ConfigChanged;
import net.runelite.client.game.ItemManager;
import net.runelite.client.plugins.Plugin;
import net.runelite.client.plugins.PluginDescriptor;
import net.runelite.client.ui.ClientToolbar;
import net.runelite.client.ui.NavigationButton;
import net.runelite.client.ui.overlay.OverlayManager;
import net.runelite.client.util.ImageUtil;

@Slf4j
@PluginDescriptor(
	name = "Live Web Dashboard",
	description = "Shows real-time coordinates, stats, map, GPS navigation around obstacles, equipment, inventory, and bank contents",
	tags = {"telemetry", "web", "dashboard", "live", "coordinates", "coords", "map", "bank", "inventory", "equipment", "ge", "gps"}
)
public class LiveDashboardPlugin extends Plugin
{
	@Inject
	private Client client;

	@Inject
	private ClientThread clientThread;

	@Inject
	private ClientToolbar clientToolbar;

	@Inject
	private OverlayManager overlayManager;

	@Inject
	private GpsPathOverlay gpsPathOverlay;

	@Inject
	private ItemManager itemManager;

	@Inject
	private LiveDashboardConfig config;

	private LiveDashboardServer server;
	private LiveDashboardPanel panel;
	private NavigationButton navButton;
	private int tickCounter = 0;

	@Getter
	private volatile WorldPoint gpsTarget = null;

	@Getter
	private volatile List<WorldPoint> gpsPath = Collections.emptyList();

	@Getter
	private volatile List<ShortcutData> nearbyShortcuts = Collections.emptyList();

	private WorldPoint lastCalculatedPlayerPos = null;
	private WorldPoint lastCalculatedTargetPos = null;

	// Cached containers (Bank persists once opened during session)
	private List<Map<String, Object>> cachedInventory = new ArrayList<>();
	private List<Map<String, Object>> cachedEquipment = new ArrayList<>();
	private List<Map<String, Object>> cachedBank = new ArrayList<>();

	// Total item count index (Item ID -> total qty across inv, equip, bank)
	private Map<Integer, Map<String, Integer>> cachedItemSummary = new HashMap<>();

	// Natural regeneration trackers
	private int hpRegenTicksLeft = 100;
	private int lastHp = -1;

	private int energyRegenTicksLeft = 10;
	private int lastEnergy = -1;

	private WorldPoint lastWorldPoint = null;

	@Provides
	LiveDashboardConfig provideConfig(ConfigManager configManager)
	{
		return configManager.getConfig(LiveDashboardConfig.class);
	}

	@Override
	protected void startUp() throws Exception
	{
		log.info("Live Dashboard Plugin startet...");
		server = new LiveDashboardServer(this);
		panel = new LiveDashboardPanel(this);

		BufferedImage icon = null;
		try
		{
			icon = ImageUtil.loadImageResource(getClass(), "/com/example/livedashboard/icon.png");
		}
		catch (Exception e)
		{
			try
			{
				icon = ImageUtil.loadImageResource(getClass(), "/com/example/icon.png");
			}
			catch (Exception ignored)
			{
			}
		}

		navButton = NavigationButton.builder()
			.tooltip("Live Web Dashboard")
			.icon(icon)
			.priority(6)
			.panel(panel)
			.build();

		clientToolbar.addNavigation(navButton);
		overlayManager.add(gpsPathOverlay);

		startServer(config.port());

		clientThread.invokeLater(this::collectAndSendTelemetry);
	}

	@Override
	protected void shutDown() throws Exception
	{
		log.info("Live Dashboard Plugin stoppt...");
		overlayManager.remove(gpsPathOverlay);

		if (server != null)
		{
			server.stop();
			server = null;
		}

		if (navButton != null)
		{
			clientToolbar.removeNavigation(navButton);
			navButton = null;
		}
		panel = null;
		setGpsTarget(null);
		cachedInventory.clear();
		cachedEquipment.clear();
		cachedBank.clear();
		cachedItemSummary.clear();
	}

	public void setGpsTarget(WorldPoint target)
	{
		this.gpsTarget = target;
		if (target == null)
		{
			this.gpsPath = Collections.emptyList();
			this.nearbyShortcuts = Collections.emptyList();
			this.lastCalculatedPlayerPos = null;
			this.lastCalculatedTargetPos = null;
		}
		else
		{
			clientThread.invokeLater(this::recalculatePath);
		}
	}

	public void toggleServer()
	{
		if (server != null && server.isRunning())
		{
			server.stop();
			if (panel != null)
			{
				panel.updateServerState(false, -1);
			}
		}
		else
		{
			startServer(config.port());
		}
	}

	private void startServer(int port)
	{
		try
		{
			if (server == null)
			{
				server = new LiveDashboardServer(this);
			}
			server.start(port);
			if (panel != null)
			{
				panel.updateServerState(true, server.getPort());
			}
		}
		catch (IOException e)
		{
			log.error("Fehler beim Starten des Dashboard Webservers auf Port {}", port, e);
			if (panel != null)
			{
				panel.updateServerState(false, -1);
			}
		}
	}

	public String getServerUrl()
	{
		return server != null ? server.getUrl() : "";
	}

	@Subscribe
	public void onGameTick(GameTick event)
	{
		tickCounter++;

		updateRegenTickers();
		recalculatePath();
		collectAndSendTelemetry();
	}

	private void recalculatePath()
	{
		if (gpsTarget == null || client.getGameState() != GameState.LOGGED_IN || client.getLocalPlayer() == null)
		{
			return;
		}

		WorldPoint playerPos = client.getLocalPlayer().getWorldLocation();
		if (playerPos == null)
		{
			return;
		}

		if (playerPos.equals(gpsTarget))
		{
			setGpsTarget(null);
			return;
		}

		// Dynamically recompute whenever the player moves or target changes
		if (!playerPos.equals(lastCalculatedPlayerPos) || !gpsTarget.equals(lastCalculatedTargetPos))
		{
			lastCalculatedPlayerPos = playerPos;
			lastCalculatedTargetPos = gpsTarget;
			gpsPath = Pathfinder.findPath(client, playerPos, gpsTarget);
			nearbyShortcuts = Pathfinder.findNearbyShortcuts(client, gpsPath);
		}
	}

	private void updateRegenTickers()
	{
		if (client.getGameState() != GameState.LOGGED_IN)
		{
			return;
		}

		int currentHp = client.getBoostedSkillLevel(Skill.HITPOINTS);
		boolean rapidHeal = client.isPrayerActive(net.runelite.api.Prayer.RAPID_HEAL);
		int hpMaxPeriod = rapidHeal ? 50 : 100;

		if (lastHp != -1 && currentHp != lastHp)
		{
			hpRegenTicksLeft = hpMaxPeriod;
		}
		else
		{
			hpRegenTicksLeft--;
			if (hpRegenTicksLeft <= 0)
			{
				hpRegenTicksLeft = hpMaxPeriod;
			}
		}
		lastHp = currentHp;

		int currentEnergy = client.getEnergy() / 100;
		if (currentEnergy >= 100)
		{
			energyRegenTicksLeft = 0;
		}
		else
		{
			if (lastEnergy != -1 && currentEnergy > lastEnergy)
			{
				int agility = client.getRealSkillLevel(Skill.AGILITY);
				energyRegenTicksLeft = Math.max(2, (int) Math.round((100.0 - (agility * 0.6)) / 10.0));
			}
			else
			{
				if (energyRegenTicksLeft > 0)
				{
					energyRegenTicksLeft--;
				}
				else
				{
					int agility = client.getRealSkillLevel(Skill.AGILITY);
					energyRegenTicksLeft = Math.max(2, (int) Math.round((100.0 - (agility * 0.6)) / 10.0));
				}
			}
		}
		lastEnergy = currentEnergy;
	}

	@Subscribe
	public void onItemContainerChanged(ItemContainerChanged event)
	{
		int containerId = event.getContainerId();
		if (containerId == InventoryID.INVENTORY.getId())
		{
			cachedInventory = serializeContainer(event.getItemContainer(), false);
			rebuildItemSummary();
		}
		else if (containerId == InventoryID.EQUIPMENT.getId())
		{
			cachedEquipment = serializeEquipmentContainer(event.getItemContainer());
			rebuildItemSummary();
		}
		else if (containerId == InventoryID.BANK.getId())
		{
			cachedBank = serializeContainer(event.getItemContainer(), true);
			rebuildItemSummary();
		}
	}

	private void rebuildItemSummary()
	{
		Map<Integer, Map<String, Integer>> map = new HashMap<>();

		for (Map<String, Object> item : cachedInventory)
		{
			if (item == null) continue;
			Object idObj = item.get("id");
			Object qtyObj = item.get("qty");
			if (idObj == null) continue;
			int id = (int) idObj;
			int qty = qtyObj instanceof Number ? ((Number) qtyObj).intValue() : 1;
			Map<String, Integer> counts = map.computeIfAbsent(id, k -> new HashMap<>());
			counts.put("inv", counts.getOrDefault("inv", 0) + qty);
		}

		for (Map<String, Object> item : cachedEquipment)
		{
			if (item == null) continue;
			Object idObj = item.get("id");
			Object qtyObj = item.get("qty");
			if (idObj == null) continue;
			int id = (int) idObj;
			int qty = qtyObj instanceof Number ? ((Number) qtyObj).intValue() : 1;
			Map<String, Integer> counts = map.computeIfAbsent(id, k -> new HashMap<>());
			counts.put("equip", counts.getOrDefault("equip", 0) + qty);
		}

		for (Map<String, Object> item : cachedBank)
		{
			if (item == null) continue;
			Object idObj = item.get("id");
			Object qtyObj = item.get("qty");
			if (idObj == null) continue;
			int id = (int) idObj;
			int qty = qtyObj instanceof Number ? ((Number) qtyObj).intValue() : 1;
			Map<String, Integer> counts = map.computeIfAbsent(id, k -> new HashMap<>());
			counts.put("bank", counts.getOrDefault("bank", 0) + qty);
		}

		cachedItemSummary = map;
	}

	private List<Map<String, Object>> serializeContainer(ItemContainer container, boolean isBank)
	{
		List<Map<String, Object>> list = new ArrayList<>();
		if (container == null)
		{
			return list;
		}

		Item[] items = container.getItems();
		for (int i = 0; i < items.length; i++)
		{
			Item item = items[i];
			if (item == null || item.getId() <= 0)
			{
				if (!isBank)
				{
					Map<String, Object> emptyMap = new LinkedHashMap<>();
					emptyMap.put("slot", i);
					emptyMap.put("id", 0);
					emptyMap.put("qty", 0);
					list.add(emptyMap);
				}
				continue;
			}

			Map<String, Object> itemMap = new LinkedHashMap<>();
			itemMap.put("slot", i);
			itemMap.put("id", item.getId());
			itemMap.put("qty", item.getQuantity());

			ItemComposition comp = itemManager.getItemComposition(item.getId());
			if (comp != null)
			{
				itemMap.put("name", comp.getName());
				itemMap.put("members", comp.isMembers());
				itemMap.put("haPrice", comp.getHaPrice());
			}
			else
			{
				itemMap.put("name", "Item #" + item.getId());
			}

			long gePrice = itemManager.getItemPrice(item.getId());
			itemMap.put("price", gePrice);

			list.add(itemMap);
		}
		return list;
	}

	private List<Map<String, Object>> serializeEquipmentContainer(ItemContainer container)
	{
		List<Map<String, Object>> list = new ArrayList<>();
		if (container == null)
		{
			return list;
		}

		EquipmentInventorySlot[] slots = {
			EquipmentInventorySlot.HEAD,
			EquipmentInventorySlot.CAPE,
			EquipmentInventorySlot.AMULET,
			EquipmentInventorySlot.AMMO,
			EquipmentInventorySlot.WEAPON,
			EquipmentInventorySlot.BODY,
			EquipmentInventorySlot.SHIELD,
			EquipmentInventorySlot.LEGS,
			EquipmentInventorySlot.GLOVES,
			EquipmentInventorySlot.BOOTS,
			EquipmentInventorySlot.RING
		};

		for (EquipmentInventorySlot slot : slots)
		{
			int slotIdx = slot.getSlotIdx();
			Item item = container.getItem(slotIdx);
			Map<String, Object> slotMap = new LinkedHashMap<>();
			slotMap.put("slotName", slot.name());
			slotMap.put("slotIdx", slotIdx);

			if (item != null && item.getId() > 0)
			{
				slotMap.put("id", item.getId());
				slotMap.put("qty", item.getQuantity());
				ItemComposition comp = itemManager.getItemComposition(item.getId());
				if (comp != null)
				{
					slotMap.put("name", comp.getName());
					slotMap.put("members", comp.isMembers());
					slotMap.put("haPrice", comp.getHaPrice());
				}
				else
				{
					slotMap.put("name", "Item #" + item.getId());
				}
				slotMap.put("price", itemManager.getItemPrice(item.getId()));
			}
			else
			{
				slotMap.put("id", 0);
			}

			list.add(slotMap);
		}
		return list;
	}

	@Subscribe
	public void onGameStateChanged(GameStateChanged event)
	{
		if (event.getGameState() == GameState.LOGIN_SCREEN)
		{
			cachedInventory.clear();
			cachedEquipment.clear();
			cachedBank.clear();
			cachedItemSummary.clear();
			setGpsTarget(null);
		}
		collectAndSendTelemetry();
	}

	@Subscribe
	public void onConfigChanged(ConfigChanged event)
	{
		if (!LiveDashboardConfig.GROUP.equals(event.getGroup()))
		{
			return;
		}

		if ("port".equals(event.getKey()))
		{
			if (server != null && server.isRunning())
			{
				startServer(config.port());
			}
		}
	}

	private void collectAndSendTelemetry()
	{
		Map<String, Object> data = new LinkedHashMap<>();
		GameState gs = client.getGameState();
		data.put("gameState", gs != null ? gs.name() : "UNKNOWN");
		data.put("gameTick", tickCounter);

		if (gs == GameState.LOGGED_IN)
		{
			Player player = client.getLocalPlayer();
			boolean isMoving = false;
			if (player != null)
			{
				data.put("player", player.getName());
				WorldPoint wp = player.getWorldLocation();
				if (wp != null)
				{
					data.put("worldX", wp.getX());
					data.put("worldY", wp.getY());
					data.put("plane", wp.getPlane());
					data.put("regionId", wp.getRegionID());
					data.put("regionX", wp.getRegionX());
					data.put("regionY", wp.getRegionY());

					if (lastWorldPoint != null && !lastWorldPoint.equals(wp))
					{
						isMoving = true;
					}
					lastWorldPoint = wp;
				}

				LocalPoint lp = player.getLocalLocation();
				if (lp != null)
				{
					data.put("sceneX", lp.getSceneX());
					data.put("sceneY", lp.getSceneY());
				}

				data.put("orientation", player.getOrientation());
				data.put("animation", player.getAnimation());
				data.put("poseAnimation", player.getPoseAnimation());
				if (player.getPoseAnimation() != player.getIdlePoseAnimation())
				{
					isMoving = true;
				}
			}
			data.put("isMoving", isMoving);

			data.put("world", client.getWorld());
			data.put("cameraYaw", client.getCameraYaw());
			data.put("cameraPitch", client.getCameraPitch());
			data.put("weight", client.getWeight());

			// Vitals
			int hp = client.getBoostedSkillLevel(Skill.HITPOINTS);
			int maxHp = client.getRealSkillLevel(Skill.HITPOINTS);
			data.put("hp", hp);
			data.put("maxHp", maxHp);
			data.put("hpRegenSeconds", (int) Math.ceil(hpRegenTicksLeft * 0.6));
			data.put("hpRegenTicks", hpRegenTicksLeft);

			data.put("prayer", client.getBoostedSkillLevel(Skill.PRAYER));
			data.put("maxPrayer", client.getRealSkillLevel(Skill.PRAYER));

			int energy = client.getEnergy() / 100;
			data.put("energy", energy);
			data.put("energyRegenSeconds", energy >= 100 ? 0 : (int) Math.ceil(energyRegenTicksLeft * 0.6));
			data.put("energyRegenTicks", energy >= 100 ? 0 : energyRegenTicksLeft);

			int agility = client.getRealSkillLevel(Skill.AGILITY);
			data.put("agilityLevel", agility);

			// Containers
			if (cachedInventory.isEmpty())
			{
				ItemContainer inv = client.getItemContainer(InventoryID.INVENTORY);
				if (inv != null)
				{
					cachedInventory = serializeContainer(inv, false);
				}
			}
			if (cachedEquipment.isEmpty())
			{
				ItemContainer equip = client.getItemContainer(InventoryID.EQUIPMENT);
				if (equip != null)
				{
					cachedEquipment = serializeEquipmentContainer(equip);
				}
			}
			if (cachedBank.isEmpty())
			{
				ItemContainer bank = client.getItemContainer(InventoryID.BANK);
				if (bank != null)
				{
					cachedBank = serializeContainer(bank, true);
				}
			}
			if (cachedItemSummary.isEmpty() && (!cachedInventory.isEmpty() || !cachedEquipment.isEmpty() || !cachedBank.isEmpty()))
			{
				rebuildItemSummary();
			}

			long invCount = cachedInventory.stream().filter(m -> ((Number) m.getOrDefault("id", 0)).intValue() > 0).count();
			data.put("inventory", cachedInventory);
			data.put("invCount", invCount);

			long equipCount = cachedEquipment.stream().filter(m -> ((Number) m.getOrDefault("id", 0)).intValue() > 0).count();
			data.put("equipment", cachedEquipment);
			data.put("equipCount", equipCount);

			data.put("bank", cachedBank);
			data.put("bankCount", cachedBank.size());
			data.put("itemSummary", cachedItemSummary);

			// Active GPS target & obstacle-free path & ETA estimation
			if (gpsTarget != null)
			{
				Map<String, Object> gpsMap = new LinkedHashMap<>();
				gpsMap.put("x", gpsTarget.getX());
				gpsMap.put("y", gpsTarget.getY());
				gpsMap.put("plane", gpsTarget.getPlane());

				List<Map<String, Integer>> pathList = new ArrayList<>();
				if (gpsPath != null)
				{
					for (WorldPoint p : gpsPath)
					{
						Map<String, Integer> pMap = new LinkedHashMap<>();
						pMap.put("x", p.getX());
						pMap.put("y", p.getY());
						pathList.add(pMap);
					}
				}
				gpsMap.put("path", pathList);

				int totalTiles = (gpsPath != null && !gpsPath.isEmpty())
					? gpsPath.size()
					: (player != null && player.getWorldLocation() != null ? player.getWorldLocation().distanceTo(gpsTarget) : 0);
				gpsMap.put("totalTiles", totalTiles);

				// Running = 2 tiles/tick (1.2s per 2 tiles = 0.6s per tile average)
				// Walking = 1 tile/tick (0.6s per tile)
				int runSeconds = (int) Math.ceil((totalTiles / 2.0) * 0.6);
				int walkSeconds = (int) Math.ceil(totalTiles * 0.6);
				gpsMap.put("runEtaSeconds", runSeconds);
				gpsMap.put("walkEtaSeconds", walkSeconds);

				// Nearby Agility Shortcuts along route
				List<Map<String, Object>> scList = new ArrayList<>();
				if (nearbyShortcuts != null)
				{
					for (ShortcutData sc : nearbyShortcuts)
					{
						Map<String, Object> m = new LinkedHashMap<>();
						m.put("name", sc.getName());
						m.put("level", sc.getRequiredLevel());
						m.put("desc", sc.getDescription());
						m.put("canUse", agility >= sc.getRequiredLevel());
						scList.add(m);
					}
				}
				gpsMap.put("shortcuts", scList);

				data.put("gpsTarget", gpsMap);
			}
		}

		if (server != null)
		{
			server.updateTelemetry(data);
		}
		if (panel != null)
		{
			panel.updateTelemetry(data);
		}
	}
}