Creating Dynamic Crafting Systems

// Multi-tier recipe caching system
class RecipeCache {
  constructor(options = {}) {
    this.exactCache = new LRUCache({
      max: options.exactCacheSize || 1000,
      ttl: options.exactCacheTTL || 3600000 // 1 hour
    });
    
    this.similarCache = new LRUCache({
      max: options.similarCacheSize || 5000,
      ttl: options.similarCacheTTL || 86400000 // 24 hours
    });
  }
  
  async getRecipe(ingredients, context) {
    // Check for exact match
    const cacheKey = this.createCacheKey(ingredients, context);
    if (this.exactCache.has(cacheKey)) {
      const cached = this.exactCache.get(cacheKey);
      return this.addVariation(cached, 0.05); // Small variations
    }
    
    // Check for similar recipes
    const similarKey = this.findSimilarRecipeKey(ingredients, context);
    if (similarKey) {
      const similar = this.similarCache.get(similarKey);
      return this.adaptSimilarRecipe(similar, ingredients, context);
    }
    
    // Generate new recipe
    const recipe = await this.generateNewRecipe(ingredients, context);
    
    // Store in cache
    this.exactCache.set(cacheKey, recipe);
    this.updateSimilarCache(recipe, ingredients, context);
    
    return recipe;
  }
}

// Batch recipe generation service
class BatchRecipeService {
  constructor() {
    this.recipeQueue = [];
    this.processingBatch = false;
    this.recipePool = new Map(); // Environment -> recipes
    
    // Process queue every 30 seconds
    setInterval(() => this.processBatchIfNeeded(), 30000);
  }
  
  queueRecipeGeneration(parameters, priority = 'normal') {
    this.recipeQueue.push({
      parameters,
      priority,
      timestamp: Date.now()
    });
    
    // Process immediately if high priority
    if (priority === 'high' && !this.processingBatch) {
      this.processBatch();
    }
  }
  
  async processBatch() {
    if (this.recipeQueue.length === 0) return;
    if (this.processingBatch) return;
    
    this.processingBatch = true;
    
    try {
      // Sort by priority and timestamp
      this.recipeQueue.sort((a, b) => {
        const priorityValues = {
          'high': 0,
          'normal': 1,
          'low': 2
        };
        
        return priorityValues[a.priority] - priorityValues[b.priority] || 
               a.timestamp - b.timestamp;
      });
      
      // Take up to 50 items
      const batch = this.recipeQueue.splice(0, 50);
      
      // Process each group by context
      const contextGroups = this.groupByContext(batch);
      for (const [context, items] of contextGroups) {
        await this.processContextGroup(context, items);
      }
    } finally {
      this.processingBatch = false;
    }
  }
}

// Tiered recipe generation strategy
class TieredGenerator {
  constructor() {
    this.templateEngine = new RecipeTemplateEngine();
    this.parameterGenerator = new ParameterizedGenerator();
    this.aiGenerator = new AIRecipeGenerator();
    
    // Define tiers and their processing rules
    this.tiers = {
      basic: {
        description: 'Common recipes with minor variations',
        method: 'template',
        complexityThreshold: 0.3,
        cacheTTL: 86400000 // 24 hours
      },
      standard: {
        description: 'Uncommon recipes with moderate variation',
        method: 'parameterized',
        complexityThreshold: 0.6,
        cacheTTL: 3600000 // 1 hour
      },
      premium: {
        description: 'Rare recipes with significant uniqueness',
        method: 'hybrid',
        complexityThreshold: 0.8,
        cacheTTL: 300000 // 5 minutes
      },
      legendary: {
        description: 'Unique recipes with maximum creativity',
        method: 'full_ai',
        complexityThreshold: 1.0,
        cacheTTL: null // No caching
      }
    };
  }
  
  async generateRecipe(request) {
    const tier = this.determineRecipeTier(request);
    const tierConfig = this.tiers[tier];
    
    // Generate based on tier method
    switch (tierConfig.method) {
      case 'template':
        return this.templateEngine.generate(request);
      case 'parameterized':
        return this.parameterGenerator.generate(request);
      case 'hybrid': {
        const baseRecipe = this.parameterGenerator.generate(request);
        return this.aiGenerator.enhance(baseRecipe, request);
      }
      case 'full_ai':
        return this.aiGenerator.generate(request);
      default:
        throw new Error(`Unknown generation method: ${tierConfig.method}`);
    }
  }
}