package com.openosrs.client.api;

import com.openosrs.client.core.ClientCore;
import com.openosrs.client.engine.GameEngine;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import java.util.Arrays;
import java.util.concurrent.CompletableFuture;

/**
 * CombatAPI - Handles combat-related actions and state.
 * 
 * This API module provides methods for:
 * - Combat actions (attacking, eating, drinking potions)
 * - Combat state monitoring
 * - Health and prayer management
 * - Combat calculations and utilities
 */
public class CombatAPI {
    private static final Logger logger = LoggerFactory.getLogger(CombatAPI.class);
    
    private final ClientCore clientCore;
    private final GameEngine gameEngine;
    \n    // Common food item IDs (for auto-eating)\n    private static final int[] FOOD_IDS = {\n        385,   // Shark\n        379,   // Lobster\n        373,   // Swordfish\n        365,   // Bass\n        361,   // Tuna\n        329,   // Salmon\n        315,   // Shrimps\n        7946,  // Monkfish\n        3144,  // Karambwan\n        6297,  // Anglerfish\n        385,   // Shark\n        12625, // Saradomin brew\n    };\n    \n    // Common potion IDs\n    private static final int[] COMBAT_POTIONS = {\n        2428,  // Attack potion(4)\n        113,   // Strength potion(4)\n        2440,  // Super attack(4)\n        2442,  // Super strength(4)\n        2436,  // Super defence(4)\n        2444,  // Ranging potion(4)\n        3024,  // Super energy(4)\n        3016,  // Energy potion(4)\n        2434,  // Prayer potion(4)\n        12625, // Saradomin brew(4)\n        12631, // Super restore(4)\n    };\n    \n    public CombatAPI(ClientCore clientCore, GameEngine gameEngine) {\n        this.clientCore = clientCore;\n        this.gameEngine = gameEngine;\n    }\n    \n    /**\n     * Attack an NPC.\n     */\n    public CompletableFuture<Boolean> attackNPC(NPC npc) {\n        if (npc == null) {\n            return CompletableFuture.completedFuture(false);\n        }\n        \n        logger.debug(\"Attacking NPC: {} (ID: {})\", npc.getName(), npc.getId());\n        \n        return CompletableFuture.supplyAsync(() -> {\n            try {\n                // Check if NPC is attackable\n                if (!npc.isInteractable()) {\n                    logger.warn(\"NPC {} is not attackable\", npc.getName());\n                    return false;\n                }\n                \n                Position playerPos = clientCore.getPlayerState().getPosition();\n                if (playerPos == null) {\n                    logger.warn(\"Cannot attack - player position unknown\");\n                    return false;\n                }\n                \n                double distance = npc.distanceToPlayer(playerPos);\n                if (distance > 10) {\n                    logger.warn(\"NPC too far away for attack: {} tiles\", distance);\n                    return false;\n                }\n                \n                // Check if already in combat\n                if (clientCore.getPlayerState().isInCombat()) {\n                    logger.debug(\"Already in combat, switching targets\");\n                }\n                \n                // TODO: Send attack packet to server\n                // TODO: Update combat state\n                \n                // Simulate attack time\n                Thread.sleep(600); // 1 game tick\n                \n                logger.debug(\"Attack initiated on NPC: {}\", npc.getName());\n                return true;\n                \n            } catch (InterruptedException e) {\n                Thread.currentThread().interrupt();\n                logger.warn(\"Attack interrupted\");\n                return false;\n            } catch (Exception e) {\n                logger.error(\"Error during attack\", e);\n                return false;\n            }\n        });\n    }\n    \n    /**\n     * Eat food from inventory (automatically finds food).\n     */\n    public CompletableFuture<Boolean> eatFood() {\n        logger.debug(\"Attempting to eat food\");\n        \n        return CompletableFuture.supplyAsync(() -> {\n            try {\n                // Find food in inventory\n                Item[] inventory = clientCore.getInventoryState().getInventory();\n                \n                for (int slot = 0; slot < inventory.length; slot++) {\n                    Item item = inventory[slot];\n                    if (item != null && !item.isEmpty() && isFood(item.getItemId())) {\n                        logger.debug(\"Eating food: {}\", item.getName());\n                        \n                        // TODO: Send eat packet to server\n                        // TODO: Update player health\n                        \n                        // Simulate eating time\n                        Thread.sleep(1800); // 3 game ticks\n                        \n                        logger.debug(\"Food consumed: {}\", item.getName());\n                        return true;\n                    }\n                }\n                \n                logger.warn(\"No food found in inventory\");\n                return false;\n                \n            } catch (InterruptedException e) {\n                Thread.currentThread().interrupt();\n                logger.warn(\"Eating interrupted\");\n                return false;\n            } catch (Exception e) {\n                logger.error(\"Error eating food\", e);\n                return false;\n            }\n        });\n    }\n    \n    /**\n     * Drink a specific potion.\n     */\n    public CompletableFuture<Boolean> drinkPotion(int itemId) {\n        logger.debug(\"Attempting to drink potion: {}\", itemId);\n        \n        return CompletableFuture.supplyAsync(() -> {\n            try {\n                // Find potion in inventory\n                int slot = clientCore.getInventoryState().findItemSlot(itemId);\n                if (slot == -1) {\n                    logger.warn(\"Potion {} not found in inventory\", itemId);\n                    return false;\n                }\n                \n                Item potion = clientCore.getInventoryState().getInventorySlot(slot);\n                logger.debug(\"Drinking potion: {}\", potion.getName());\n                \n                // TODO: Send drink packet to server\n                // TODO: Update player stats based on potion effect\n                \n                // Simulate drinking time\n                Thread.sleep(1800); // 3 game ticks\n                \n                logger.debug(\"Potion consumed: {}\", potion.getName());\n                return true;\n                \n            } catch (InterruptedException e) {\n                Thread.currentThread().interrupt();\n                logger.warn(\"Drinking interrupted\");\n                return false;\n            } catch (Exception e) {\n                logger.error(\"Error drinking potion\", e);\n                return false;\n            }\n        });\n    }\n    \n    /**\n     * Get current combat target.\n     */\n    public NPC getCombatTarget() {\n        // TODO: Track current combat target\n        // For now, return null as we don't have combat state tracking yet\n        return null;\n    }\n    \n    /**\n     * Check if the player should eat (low health).\n     */\n    public boolean shouldEat() {\n        int currentHp = clientCore.getPlayerState().getSkillLevel(AgentAPI.Skill.HITPOINTS);\n        int maxHp = clientCore.getPlayerState().getSkillRealLevel(AgentAPI.Skill.HITPOINTS);\n        \n        double healthPercentage = (double) currentHp / maxHp;\n        return healthPercentage < 0.6; // Eat when below 60% health\n    }\n    \n    /**\n     * Check if the player should drink a prayer potion.\n     */\n    public boolean shouldDrinkPrayerPotion() {\n        int currentPrayer = clientCore.getPlayerState().getSkillLevel(AgentAPI.Skill.PRAYER);\n        int maxPrayer = clientCore.getPlayerState().getSkillRealLevel(AgentAPI.Skill.PRAYER);\n        \n        double prayerPercentage = (double) currentPrayer / maxPrayer;\n        return prayerPercentage < 0.25; // Drink when below 25% prayer\n    }\n    \n    /**\n     * Automatically handle combat (eat food, drink potions if needed).\n     */\n    public CompletableFuture<Boolean> autoManageCombat() {\n        return CompletableFuture.supplyAsync(() -> {\n            try {\n                boolean actionTaken = false;\n                \n                // Check if we need to eat\n                if (shouldEat()) {\n                    logger.debug(\"Health low, attempting to eat\");\n                    if (eatFood().get()) {\n                        actionTaken = true;\n                    }\n                }\n                \n                // Check if we need prayer\n                if (shouldDrinkPrayerPotion()) {\n                    logger.debug(\"Prayer low, attempting to drink prayer potion\");\n                    // Try to drink prayer potion (4)\n                    if (drinkPotion(2434).get()) {\n                        actionTaken = true;\n                    }\n                }\n                \n                return actionTaken;\n                \n            } catch (Exception e) {\n                logger.error(\"Error during auto combat management\", e);\n                return false;\n            }\n        });\n    }\n    \n    /**\n     * Check if an item ID is food.\n     */\n    private boolean isFood(int itemId) {\n        return Arrays.stream(FOOD_IDS).anyMatch(foodId -> foodId == itemId);\n    }\n    \n    /**\n     * Check if an item ID is a combat potion.\n     */\n    private boolean isCombatPotion(int itemId) {\n        return Arrays.stream(COMBAT_POTIONS).anyMatch(potionId -> potionId == itemId);\n    }\n    \n    /**\n     * Calculate the player's max hit (simplified).\n     */\n    public int calculateMaxHit() {\n        // TODO: Implement proper max hit calculation\n        // This would need to consider strength level, equipment, potions, etc.\n        int strLevel = clientCore.getPlayerState().getSkillLevel(AgentAPI.Skill.STRENGTH);\n        return Math.max(1, strLevel / 10); // Very simplified calculation\n    }\n    \n    /**\n     * Calculate combat effectiveness against an NPC.\n     */\n    public double calculateCombatEffectiveness(NPC npc) {\n        if (npc == null) {\n            return 0.0;\n        }\n        \n        // TODO: Implement proper effectiveness calculation\n        // This would consider combat levels, equipment, NPC defence, etc.\n        int playerCombatLevel = clientCore.getPlayerState().getCombatLevel();\n        int npcCombatLevel = npc.getCombatLevel();\n        \n        if (npcCombatLevel == 0) {\n            return 1.0; // Non-combat NPC\n        }\n        \n        return Math.min(1.0, (double) playerCombatLevel / npcCombatLevel);\n    }\n    \n    /**\n     * Check if it's safe to engage in combat.\n     */\n    public boolean isSafeToCombat() {\n        // Check health\n        if (shouldEat() && !hasFood()) {\n            logger.warn(\"Not safe to combat - low health and no food\");\n            return false;\n        }\n        \n        // Check if already in dangerous combat\n        int currentHp = clientCore.getPlayerState().getSkillLevel(AgentAPI.Skill.HITPOINTS);\n        if (currentHp <= 20 && clientCore.getPlayerState().isInCombat()) {\n            logger.warn(\"Not safe to combat - critical health in combat\");\n            return false;\n        }\n        \n        return true;\n    }\n    \n    /**\n     * Check if the player has food in inventory.\n     */\n    public boolean hasFood() {\n        Item[] inventory = clientCore.getInventoryState().getInventory();\n        \n        for (Item item : inventory) {\n            if (item != null && !item.isEmpty() && isFood(item.getItemId())) {\n                return true;\n            }\n        }\n        \n        return false;\n    }\n    \n    /**\n     * Get the amount of food in inventory.\n     */\n    public int getFoodCount() {\n        Item[] inventory = clientCore.getInventoryState().getInventory();\n        int count = 0;\n        \n        for (Item item : inventory) {\n            if (item != null && !item.isEmpty() && isFood(item.getItemId())) {\n                count += item.getQuantity();\n            }\n        }\n        \n        return count;\n    }\n}"