// Crafting System - Handles recipe management and item crafting
class CraftingSystem {
    constructor(scene) {
        this.scene = scene;
        this.recipes = {};
        this.categories = [];
        this.unlockedRecipes = new Set();

        // Crafting queue
        this.craftingQueue = [];
        this.isCrafting = false;
        this.currentCraft = null;
        this.craftProgress = 0;

        console.log('🛠️ CraftingSystem initialized');
    }

    async loadRecipes() {
        try {
            // Load recipes from JSON file
            const response = await fetch('data/recipes.json');
            const data = await response.json();

            this.recipes = data.recipes;
            this.categories = data.categories;

            // Initialize unlocked recipes
            Object.keys(this.recipes).forEach(recipeId => {
                const recipe = this.recipes[recipeId];
                if (recipe.unlocked) {
                    this.unlockedRecipes.add(recipeId);
                }
            });

            console.log(`✅ Loaded ${Object.keys(this.recipes).length} recipes`);
            console.log(`🔓 ${this.unlockedRecipes.size} unlocked recipes`);

            return true;
        } catch (error) {
            console.error('❌ Failed to load recipes:', error);
            return false;
        }
    }

    // Get all recipes (optionally filtered by category)
    getRecipes(category = 'all') {
        const recipeList = Object.values(this.recipes);

        if (category === 'all') {
            return recipeList;
        }

        return recipeList.filter(recipe => recipe.category === category);
    }

    // Get only unlocked recipes
    getUnlockedRecipes(category = 'all') {
        return this.getRecipes(category).filter(recipe =>
            this.unlockedRecipes.has(recipe.id)
        );
    }

    // Check if recipe is unlocked
    isUnlocked(recipeId) {
        return this.unlockedRecipes.has(recipeId);
    }

    // Unlock a recipe
    unlockRecipe(recipeId) {
        if (this.recipes[recipeId]) {
            this.unlockedRecipes.add(recipeId);
            console.log(`🔓 Unlocked recipe: ${this.recipes[recipeId].name}`);

            // Notify UI
            this.scene.events.emit('recipe-unlocked', recipeId);
            return true;
        }
        return false;
    }

    // Check if player has required ingredients
    canCraft(recipeId) {
        const recipe = this.recipes[recipeId];
        if (!recipe) return false;

        // Check if unlocked
        if (!this.isUnlocked(recipeId)) {
            return { canCraft: false, reason: 'locked' };
        }

        // Check ingredients
        const inventory = this.scene.inventorySystem;
        if (!inventory) {
            return { canCraft: false, reason: 'no_inventory' };
        }

        const missing = [];

        for (const [itemId, requiredAmount] of Object.entries(recipe.ingredients)) {
            const hasAmount = inventory.getItemCount(itemId);

            if (hasAmount < requiredAmount) {
                missing.push({
                    item: itemId,
                    required: requiredAmount,
                    has: hasAmount,
                    need: requiredAmount - hasAmount
                });
            }
        }

        if (missing.length > 0) {
            return { canCraft: false, reason: 'missing_ingredients', missing };
        }

        return { canCraft: true };
    }

    // Start crafting an item
    craftItem(recipeId) {
        const recipe = this.recipes[recipeId];
        if (!recipe) {
            console.warn(`⚠️ Recipe not found: ${recipeId}`);
            return false;
        }

        // Check if can craft
        const check = this.canCraft(recipeId);
        if (!check.canCraft) {
            console.warn(`⚠️ Cannot craft ${recipe.name}: ${check.reason}`);
            return false;
        }

        // Consume ingredients
        const inventory = this.scene.inventorySystem;
        for (const [itemId, amount] of Object.entries(recipe.ingredients)) {
            inventory.removeItem(itemId, amount);
        }

        // Add to crafting queue
        this.craftingQueue.push({
            recipeId: recipeId,
            recipe: recipe,
            startTime: Date.now(),
            duration: recipe.craftTime || 1000
        });

        console.log(`🔨 Started crafting: ${recipe.name}`);

        // Start crafting if not already crafting
        if (!this.isCrafting) {
            this.startNextCraft();
        }

        // Emit event
        this.scene.events.emit('craft-started', recipeId);

        // Play sound
        if (this.scene.soundManager && this.scene.soundManager.playCraftSound) {
            this.scene.soundManager.playCraftSound();
        }

        return true;
    }

    // Start next item in queue
    startNextCraft() {
        if (this.craftingQueue.length === 0) {
            this.isCrafting = false;
            this.currentCraft = null;
            this.craftProgress = 0;
            return;
        }

        this.isCrafting = true;
        this.currentCraft = this.craftingQueue[0];
        this.craftProgress = 0;

        console.log(`⏳ Processing: ${this.currentCraft.recipe.name}`);
    }

    // Update crafting progress
    update(delta) {
        if (!this.isCrafting || !this.currentCraft) return;

        const elapsed = Date.now() - this.currentCraft.startTime;
        this.craftProgress = Math.min(1.0, elapsed / this.currentCraft.duration);

        // Check if finished
        if (this.craftProgress >= 1.0) {
            this.completeCraft();
        }

        // Emit progress event for UI
        this.scene.events.emit('craft-progress', {
            recipe: this.currentCraft.recipe,
            progress: this.craftProgress
        });
    }

    // Complete current craft
    completeCraft() {
        if (!this.currentCraft) return;

        const recipe = this.currentCraft.recipe;

        // Add result to inventory
        const inventory = this.scene.inventorySystem;
        inventory.addItem(recipe.result.item, recipe.result.quantity);

        console.log(`✅ Crafted: ${recipe.result.quantity}x ${recipe.name}`);

        // Emit event
        this.scene.events.emit('craft-complete', {
            recipeId: recipe.id,
            item: recipe.result.item,
            quantity: recipe.result.quantity
        });

        // Play sound
        if (this.scene.soundManager && this.scene.soundManager.playSuccessSound) {
            this.scene.soundManager.playSuccessSound();
        }

        // Show floating text
        if (this.scene.player && this.scene.player.sprite) {
            const text = `+${recipe.result.quantity} ${recipe.name}`;
            this.scene.events.emit('floating-text', {
                x: this.scene.player.sprite.x,
                y: this.scene.player.sprite.y - 50,
                text: text,
                color: '#00ff00'
            });

            // ✨ PARTICLE EFFECT - Craft sparkles
            if (this.scene.particleEnhancements) {
                this.scene.particleEnhancements.craftSparkles(
                    this.scene.player.sprite.x,
                    this.scene.player.sprite.y
                );
            }
        }

        // Remove from queue
        this.craftingQueue.shift();

        // Start next craft
        this.startNextCraft();
    }

    // Cancel current craft
    cancelCraft() {
        if (!this.currentCraft) return false;

        const recipe = this.currentCraft.recipe;

        // Refund ingredients (partial refund based on progress)
        const refundPercent = 1.0 - this.craftProgress;
        const inventory = this.scene.inventorySystem;

        for (const [itemId, amount] of Object.entries(recipe.ingredients)) {
            const refundAmount = Math.floor(amount * refundPercent);
            if (refundAmount > 0) {
                inventory.addItem(itemId, refundAmount);
            }
        }

        console.log(`❌ Cancelled crafting: ${recipe.name} (${Math.floor(refundPercent * 100)}% refund)`);

        // Remove from queue
        this.craftingQueue.shift();

        // Emit event
        this.scene.events.emit('craft-cancelled', recipe.id);

        // Start next
        this.startNextCraft();

        return true;
    }

    // Get current crafting info
    getCurrentCraft() {
        if (!this.currentCraft) return null;

        return {
            recipe: this.currentCraft.recipe,
            progress: this.craftProgress,
            timeRemaining: this.currentCraft.duration * (1 - this.craftProgress)
        };
    }

    // Get queue length
    getQueueLength() {
        return this.craftingQueue.length;
    }

    // Clear entire queue
    clearQueue() {
        // Refund all queued items
        this.craftingQueue.forEach(craft => {
            const inventory = this.scene.inventorySystem;
            for (const [itemId, amount] of Object.entries(craft.recipe.ingredients)) {
                inventory.addItem(itemId, amount);
            }
        });

        this.craftingQueue = [];
        this.isCrafting = false;
        this.currentCraft = null;
        this.craftProgress = 0;

        console.log('🗑️ Cleared crafting queue');
    }

    // Save crafting state
    getSaveData() {
        return {
            unlockedRecipes: Array.from(this.unlockedRecipes),
            craftingQueue: this.craftingQueue.map(craft => ({
                recipeId: craft.recipeId,
                startTime: craft.startTime,
                duration: craft.duration
            })),
            currentProgress: this.craftProgress
        };
    }

    // Load crafting state
    loadSaveData(data) {
        if (!data) return;

        // Restore unlocked recipes
        if (data.unlockedRecipes) {
            this.unlockedRecipes = new Set(data.unlockedRecipes);
        }

        // Restore crafting queue
        if (data.craftingQueue && data.craftingQueue.length > 0) {
            this.craftingQueue = data.craftingQueue.map(saved => ({
                recipeId: saved.recipeId,
                recipe: this.recipes[saved.recipeId],
                startTime: saved.startTime,
                duration: saved.duration
            }));

            this.startNextCraft();
        }

        console.log('💾 Loaded crafting state');
    }
}