#### Search Endpoints #####

import orjson
from fastapi import APIRouter, Depends, HTTPException, Request, Response
from fastapi.responses import ORJSONResponse

from litellm._logging import verbose_proxy_logger
from litellm.proxy._types import *
from litellm.proxy.auth.user_api_key_auth import UserAPIKeyAuth, user_api_key_auth
from litellm.proxy.common_request_processing import ProxyBaseLLMRequestProcessing

router = APIRouter()


@router.post(
    "/v1/search/{search_tool_name}",
    dependencies=[Depends(user_api_key_auth)],
    response_class=ORJSONResponse,
    tags=["search"],
)
@router.post(
    "/search/{search_tool_name}",
    dependencies=[Depends(user_api_key_auth)],
    response_class=ORJSONResponse,
    tags=["search"],
)
@router.post(
    "/v1/search",
    dependencies=[Depends(user_api_key_auth)],
    response_class=ORJSONResponse,
    tags=["search"],
)
@router.post(
    "/search",
    dependencies=[Depends(user_api_key_auth)],
    response_class=ORJSONResponse,
    tags=["search"],
)
async def search(
    request: Request,
    fastapi_response: Response,
    user_api_key_dict: UserAPIKeyAuth = Depends(user_api_key_auth),
    search_tool_name: Optional[str] = None,
):
    """
    Search endpoint for performing web searches.
    
    Follows the Perplexity Search API spec:
    https://docs.perplexity.ai/api-reference/search-post
    
    The search_tool_name can be passed either:
    1. In the URL path: /v1/search/{search_tool_name}
    2. In the request body: {"search_tool_name": "..."}
    
    Example with search_tool_name in URL (recommended - keeps body Perplexity-compatible):
    ```bash
    curl -X POST "http://localhost:4000/v1/search/litellm-search" \
        -H "Authorization: Bearer sk-1234" \
        -H "Content-Type: application/json" \
        -d '{
            "query": "latest AI developments 2024",
            "max_results": 5,
            "search_domain_filter": ["arxiv.org", "nature.com"],
            "country": "US"
        }'
    ```
    
    Example with search_tool_name in body:
    ```bash
    curl -X POST "http://localhost:4000/v1/search" \
        -H "Authorization: Bearer sk-1234" \
        -H "Content-Type: application/json" \
        -d '{
            "search_tool_name": "litellm-search",
            "query": "latest AI developments 2024",
            "max_results": 5,
            "search_domain_filter": ["arxiv.org", "nature.com"],
            "country": "US"
        }'
    ```
    
    Request Body Parameters (when search_tool_name not in URL):
    - search_tool_name (str, required if not in URL): Name of the search tool configured in router
    - query (str or list[str], required): Search query
    - max_results (int, optional): Maximum number of results (1-20), default 10
    - search_domain_filter (list[str], optional): List of domains to filter (max 20)
    - max_tokens_per_page (int, optional): Max tokens per page, default 1024
    - country (str, optional): Country code filter (e.g., 'US', 'GB', 'DE')
    
    When using URL path parameter, only Perplexity-compatible parameters are needed in body:
    - query (str or list[str], required): Search query
    - max_results (int, optional): Maximum number of results (1-20), default 10
    - search_domain_filter (list[str], optional): List of domains to filter (max 20)
    - max_tokens_per_page (int, optional): Max tokens per page, default 1024
    - country (str, optional): Country code filter (e.g., 'US', 'GB', 'DE')
    
    Response follows Perplexity Search API format:
    ```json
    {
        "object": "search",
        "results": [
            {
                "title": "Result title",
                "url": "https://example.com",
                "snippet": "Result snippet...",
                "date": "2024-01-01",
                "last_updated": "2024-01-01"
            }
        ]
    }
    ```
    """
    from litellm.proxy.proxy_server import (
        general_settings,
        llm_router,
        proxy_config,
        proxy_logging_obj,
        select_data_generator,
        user_api_base,
        user_max_tokens,
        user_model,
        user_request_timeout,
        user_temperature,
        version,
    )

    # Read request body
    body = await request.body()
    data = orjson.loads(body)

    # If search_tool_name is provided in URL path, use it (takes precedence over body)
    if search_tool_name is not None:
        data["search_tool_name"] = search_tool_name

    if "search_tool_name" in data and data["search_tool_name"]:
        data["model"] = data["search_tool_name"]

        if llm_router is not None and hasattr(llm_router, "search_tools"):
            search_tool_name_value = data["search_tool_name"]

            verbose_proxy_logger.debug(
                f"Search endpoint - Looking for search_tool_name: {search_tool_name_value}. "
                f"Available search tools in router: {[tool.get('search_tool_name') for tool in llm_router.search_tools]}. "
                f"Total search tools: {len(llm_router.search_tools)}"
            )

            matching_tools = [
                tool
                for tool in llm_router.search_tools
                if tool.get("search_tool_name") == search_tool_name_value
            ]

            if matching_tools:
                search_tool = matching_tools[0]
                search_provider = search_tool.get("litellm_params", {}).get(
                    "search_provider"
                )

                if search_provider:
                    data["custom_llm_provider"] = search_provider

                if "metadata" not in data:
                    data["metadata"] = {}
                data["metadata"]["model_group"] = search_tool_name_value

    # Process request using ProxyBaseLLMRequestProcessing
    processor = ProxyBaseLLMRequestProcessing(data=data)
    try:
        return await processor.base_process_llm_request(
            request=request,
            fastapi_response=fastapi_response,
            user_api_key_dict=user_api_key_dict,
            route_type="asearch",
            proxy_logging_obj=proxy_logging_obj,
            llm_router=llm_router,
            general_settings=general_settings,
            proxy_config=proxy_config,
            select_data_generator=select_data_generator,
            model=None,
            user_model=user_model,
            user_temperature=user_temperature,
            user_request_timeout=user_request_timeout,
            user_max_tokens=user_max_tokens,
            user_api_base=user_api_base,
            version=version,
        )
    except Exception as e:
        raise await processor._handle_llm_api_exception(
            e=e,
            user_api_key_dict=user_api_key_dict,
            proxy_logging_obj=proxy_logging_obj,
            version=version,
        )


@router.get(
    "/v1/search/tools",
    dependencies=[Depends(user_api_key_auth)],
    response_class=ORJSONResponse,
    tags=["search"],
)
@router.get(
    "/search/tools",
    dependencies=[Depends(user_api_key_auth)],
    response_class=ORJSONResponse,
    tags=["search"],
)
async def list_search_tools(
    request: Request,
    fastapi_response: Response,
    user_api_key_dict: UserAPIKeyAuth = Depends(user_api_key_auth),
):
    """
    List all available search tools configured in the router.
    
    This endpoint returns the search tools that are currently loaded and available
    for use with the /v1/search endpoint.
    
    Example:
    ```bash
    curl -X GET "http://localhost:4000/v1/search/tools" \
        -H "Authorization: Bearer sk-1234"
    ```
    
    Response:
    ```json
    {
        "object": "list",
        "data": [
            {
                "search_tool_name": "litellm-search",
                "search_provider": "perplexity",
                "description": "Perplexity search tool"
            }
        ]
    }
    ```
    """
    from litellm.proxy.proxy_server import llm_router

    try:
        search_tools_list = []

        if llm_router is not None and hasattr(llm_router, "search_tools"):
            for tool in llm_router.search_tools:
                tool_info = {
                    "search_tool_name": tool.get("search_tool_name"),
                    "search_provider": tool.get("litellm_params", {}).get(
                        "search_provider"
                    ),
                }

                # Add description if available
                if "search_tool_info" in tool and tool["search_tool_info"]:
                    description = tool["search_tool_info"].get("description")
                    if description:
                        tool_info["description"] = description

                search_tools_list.append(tool_info)

        return {"object": "list", "data": search_tools_list}
    except Exception as e:
        from litellm._logging import verbose_proxy_logger

        verbose_proxy_logger.exception(f"Error listing search tools: {e}")
        raise HTTPException(status_code=500, detail=str(e))
