"""
Configuration for LangGraph agents.
Loads environment variables and manages settings.
"""
import os
from dotenv import load_dotenv
from typing import Optional

load_dotenv()

class AgentConfig:
    """Configuration for bird classification agents."""

    # Modal Bird classifier (Phase 1)
    MODAL_MCP_URL: str = os.getenv("MODAL_MCP_URL", "")
    BIRD_CLASSIFIER_API_KEY: str = os.getenv("BIRD_CLASSIFIER_API_KEY", "")

    # eBird Server (Phase 2 - deprecated, replaced by Nuthatch)
    EBIRD_API_KEY: str = os.getenv("EBIRD_API_KEY", "")  # For Cornell eBird API calls
    EBIRD_BASE_URL: str = os.getenv("EBIRD_BASE_URL", "https://api.ebird.org/v2")  # Cornell eBird API endpoint
    EBIRD_MCP_URL: str = os.getenv("EBIRD_MCP_URL", "http://localhost:8000/mcp")  # MCP server endpoint
    EBIRD_USE_STDIO: bool = os.getenv("EBIRD_USE_STDIO", "false").lower() == "true"
    EBIRD_MCP_AUTH_KEY: Optional[str] = os.getenv("EBIRD_MCP_AUTH_KEY")  # For HTTP transport auth (legacy: MCP_API_KEY)

    # Nuthatch Server (Phase 2.5 - species reference database)
    NUTHATCH_API_KEY: str = os.getenv("NUTHATCH_API_KEY", "")  # For Nuthatch API calls
    NUTHATCH_BASE_URL: str = os.getenv("NUTHATCH_BASE_URL", "https://nuthatch.lastelm.software/v2")  # Nuthatch API endpoint
    NUTHATCH_MCP_URL: str = os.getenv("NUTHATCH_MCP_URL", "http://localhost:8001/mcp")  # MCP server endpoint
    NUTHATCH_USE_STDIO: bool = os.getenv("NUTHATCH_USE_STDIO", "true").lower() == "true"
    NUTHATCH_MCP_AUTH_KEY: Optional[str] = os.getenv("NUTHATCH_MCP_AUTH_KEY")  # For HTTP transport

    # LLM Settings
    OPENAI_API_KEY: str = os.getenv("OPENAI_API_KEY", "")  # For dev/testing with backend-provided key
    DEFAULT_OPENAI_MODEL: str = os.getenv("DEFAULT_OPENAI_MODEL", "gpt-4o-mini")
    DEFAULT_HF_MODEL: str = os.getenv("DEFAULT_HF_MODEL", "Qwen/Qwen2.5-Coder-32B-Instruct")

    # Anthropic Settings
    ANTHROPIC_API_KEY: str = os.getenv("ANTHROPIC_API_KEY", "")
    DEFAULT_ANTHROPIC_MODEL: str = os.getenv("DEFAULT_ANTHROPIC_MODEL", "claude-sonnet-4-5-20250929")
    ANTHROPIC_TEMPERATURE: float = float(os.getenv("ANTHROPIC_TEMPERATURE", "0.0"))

    # Provider-specific temperature settings
    OPENAI_TEMPERATURE: float = float(os.getenv("OPENAI_TEMPERATURE", "0.0"))
    HF_TEMPERATURE: float = float(os.getenv("HF_TEMPERATURE", "0.1"))

    # Agent Settings
    MAX_ITERATIONS: int = int(os.getenv("AGENT_MAX_ITERATIONS", "10"))
    TIMEOUT: int = int(os.getenv("AGENT_TIMEOUT", "120"))

    @classmethod
    def print_config(cls) -> None:
        """Print current configuration (hiding sensitive data)."""
        print("\n" + "="*70)
        print("Agent Configuration")
        print("="*70)
        print(f"[MODAL URL]:        {cls.MODAL_MCP_URL}")
        print(f"[MODAL API KEY]:    {cls.BIRD_CLASSIFIER_API_KEY[:20]}..." if cls.BIRD_CLASSIFIER_API_KEY else "[MODAL API KEY]:  Not set")
        print(f"[NUTHATCH STDIO]:   {cls.NUTHATCH_USE_STDIO}")
        print(f"[NUTHATCH URL]:     {cls.NUTHATCH_MCP_URL}")
        print(f"[NUTHATCH API KEY]: {'✅ Set' if cls.NUTHATCH_API_KEY else '❌ Not set'}")
        print(f"[OPENAI MODEL]:     {cls.DEFAULT_OPENAI_MODEL}")
        print(f"[OPENAI TEMP]:      {cls.OPENAI_TEMPERATURE}")
        print(f"[HF MODEL]:         {cls.DEFAULT_HF_MODEL}")
        print(f"[HF TEMP]:          {cls.HF_TEMPERATURE}")
        print(f"[ANTHROPIC_MODEL]:  {cls.DEFAULT_ANTHROPIC_MODEL}")
        print(f"[ANTHROPIC_TEMP]:  {cls.ANTHROPIC_TEMPERATURE}")
        print("="*70 + "\n")