import httpx
from typing import Dict, Any, Optional
import logging
from urllib.parse import urljoin
import json

class LatticeClient:
    """Main SDK client for Lattice"""
    
    def __init__(
        self,
        api_key: str,
        base_url: str = "https://api.lattice.ai",
        timeout: int = 60,
        verify_ssl: bool = True
    ):
        self.api_key = api_key
        self.base_url = base_url.rstrip('/')
        self.timeout = timeout
        self.verify_ssl = verify_ssl
        self.logger = logging.getLogger("lattice.client")
        
        # Initialize components
        from .interfaces.document import DocumentClient
        from .interfaces.rag import RAGClient
        from .interfaces.agent import AgentClient
        from .interfaces.prompt import PromptClient
        
        self.document = DocumentClient(self)
        self.rag = RAGClient(self)
        self.agent = AgentClient(self)
        self.prompt = PromptClient(self)
    
    async def _request(
        self,
        method: str,
        endpoint: str,
        params: Optional[Dict[str, Any]] = None,
        data: Optional[Dict[str, Any]] = None,
        files: Optional[Dict[str, Any]] = None,
        timeout: Optional[int] = None
    ) -> Dict[str, Any]:
        """Make HTTP request to API"""
        url = urljoin(self.base_url, endpoint.lstrip('/'))
        headers = {
            "Authorization": f"Bearer {self.api_key}",
            "Accept": "application/json"
        }
        
        if not files:
            headers["Content-Type"] = "application/json"
        
        timeout = timeout or self.timeout
        
        try:
            async with httpx.AsyncClient(verify=self.verify_ssl) as client:
                response = await client.request(
                    method=method,
                    url=url,
                    headers=headers,
                    params=params,
                    json=data if not files else None,
                    files=files,
                    timeout=timeout
                )
                
                response.raise_for_status()
                return response.json()
                
        except httpx.HTTPStatusError as e:
            self.logger.error(f"HTTP error occurred: {str(e)}")
            raise LatticeAPIError(f"HTTP error: {str(e)}")
            
        except httpx.RequestError as e:
            self.logger.error(f"Request error occurred: {str(e)}")
            raise LatticeAPIError(f"Request error: {str(e)}")
            
        except Exception as e:
            self.logger.error(f"Unexpected error occurred: {str(e)}")
            raise LatticeAPIError(f"Unexpected error: {str(e)}")
    
    async def get(self, endpoint: str, params: Optional[Dict[str, Any]] = None) -> Dict[str, Any]:
        """Make GET request"""
        return await self._request("GET", endpoint, params=params)
    
    async def post(
        self,
        endpoint: str,
        data: Optional[Dict[str, Any]] = None,
        files: Optional[Dict[str, Any]] = None
    ) -> Dict[str, Any]:
        """Make POST request"""
        return await self._request("POST", endpoint, data=data, files=files)
    
    async def put(self, endpoint: str, data: Dict[str, Any]) -> Dict[str, Any]:
        """Make PUT request"""
        return await self._request("PUT", endpoint, data=data)
    
    async def delete(self, endpoint: str) -> Dict[str, Any]:
        """Make DELETE request"""
        return await self._request("DELETE", endpoint)
    
    async def health_check(self) -> Dict[str, Any]:
        """Check API health"""
        return await self.get("/health")
    
    async def list_components(self) -> Dict[str, Any]:
        """List available components"""
        return await self.get("/components")

class LatticeAPIError(Exception):
    """API related errors"""
    pass

# Usage example:
async def main():
    # Initialize client
    client = LatticeClient(
        api_key="your-api-key",
        base_url="https://api.lattice.ai"
    )
    
    # Use document processing
    doc_result = await client.document.process(
        file_path="example.pdf",
        options={"extract_text": True}
    )
    
    # Use RAG
    rag_result = await client.rag.generate(
        query="What is the main topic?",
        context=doc_result['content']
    )
    
    print(rag_result)

if __name__ == "__main__":
    import asyncio
    asyncio.run(main())