import os
from pydantic_settings import BaseSettings
from typing import Optional

class Settings(BaseSettings):
    """Application settings"""
    
    # Server Configuration
    SERVER_HOST: str = "0.0.0.0"
    SERVER_PORT: int = 8000
    FRONTEND_URL: str = "http://localhost:3000"
    
    # Database Configuration
    DATABASE_URL: str = "sqlite:///./locate_the_news.db"
    
    # NewsAPI Configuration
    NEWSAPI_KEY: Optional[str] = None
    NEWSAPI_COUNTRIES: str = "us,gb,de,fr,za,ng,eg,ke,jp,br,ar,co,cl,mx,in,au"
    NEWSAPI_CATEGORIES: str = "general,technology,business,health,science"
    
    # NLP/Geocoding Settings
    SPACY_MODEL_NAME: str = "en_core_web_sm"
    GEOCODER_USER_AGENT: str = "LocateTheNews/1.0.0"
    GEOCODER_TIMEOUT: int = 10
    
    # Sentiment Analysis Thresholds
    SENTIMENT_THRESHOLD_NEGATIVE: float = -0.3
    SENTIMENT_THRESHOLD_POSITIVE: float = 0.3
    
    # Priority Detection Keywords
    PRIORITY_KEYWORDS: str = "earthquake,tsunami,terror,attack,shooting,explosion,disaster,emergency,breaking,urgent,critical"
    
    # RSS Sources
    BBC_NEWS_WORLD_RSS: str = "http://feeds.bbci.co.uk/news/world/rss.xml"
    
    # Additional settings
    MAPBOX_TOKEN: Optional[str] = None
    RSS_FEEDS: list = [
        "https://www.euronews.com/rss",
        "http://feeds.bbci.co.uk/news/rss.xml",
        "https://tr.euronews.com/rss"
    ]
    
    class Config:
        env_file = ".env"
        case_sensitive = True

    @property
    def priority_keywords_list(self) -> list[str]:
        return [k.strip() for k in self.PRIORITY_KEYWORDS.split(",") if k.strip()]

    @property
    def newsapi_countries_list(self) -> list[str]:
        return [c.strip() for c in self.NEWSAPI_COUNTRIES.split(",") if c.strip()]

    @property
    def rss_sources_list(self) -> list[dict[str, str]]:
        # Map simple URL list to expected dictionary format
        # If the code expects name and url, we can infer some names or just use a default
        sources = []
        for url in self.RSS_FEEDS:
            name = "News Source"
            if "euronews" in url:
                name = "Euronews"
            elif "bbc" in url:
                name = "BBC News"
            elif "trthaber" in url:
                name = "TRT Haber"
            
            sources.append({"name": name, "url": url})
        return sources

# Create settings instance
settings = Settings()