import os
from dotenv import load_dotenv

# Load environment variables
load_dotenv()

class Config:
    # Google Custom Search API
    GOOGLE_API_KEY = os.getenv("GOOGLE_API_KEY")
    GOOGLE_CSE_ID = os.getenv("GOOGLE_CSE_ID")
    
    # Gemini API
    GEMINI_API_KEY = os.getenv("GEMINI_API_KEY")
    
    # Application settings
    MAX_CANDIDATES = int(os.getenv("MAX_CANDIDATES", "10"))
    SEARCH_DELAY = float(os.getenv("SEARCH_DELAY", "2.0"))  # seconds between requests
    
    # Cache settings
    CACHE_ENABLED = os.getenv("CACHE_ENABLED", "true").lower() == "true"
    CACHE_TTL = int(os.getenv("CACHE_TTL", "3600"))  # 1 hour in seconds
    CACHE_MAX_SIZE = int(os.getenv("CACHE_MAX_SIZE", "1000"))  # Maximum number of cached items
    CACHE_FILE_PATH = os.getenv("CACHE_FILE_PATH", "cache/linkedin_search_cache.json")
    
    # Scoring weights
    EDUCATION_WEIGHT = 0.20
    CAREER_TRAJECTORY_WEIGHT = 0.20
    COMPANY_RELEVANCE_WEIGHT = 0.15
    EXPERIENCE_MATCH_WEIGHT = 0.25
    LOCATION_WEIGHT = 0.10
    TENURE_WEIGHT = 0.10
    
    @classmethod
    def validate_config(cls):
        """Validate that all required environment variables are set"""
        required_vars = [
            "GOOGLE_API_KEY",
            "GOOGLE_CSE_ID", 
            "GEMINI_API_KEY"
        ]
        
        missing_vars = []
        for var in required_vars:
            if not getattr(cls, var):
                missing_vars.append(var)
        
        if missing_vars:
            raise ValueError(f"Missing required environment variables: {', '.join(missing_vars)}")
        
        return True