"""
Librarian tools - exist-db XML database integration.

Provides XQuery-based document storage and retrieval.
"""

from typing import Optional, Dict, List
from .base import tool, ToolResult


# TODO: Configure exist-db connection
EXISTDB_URL = "http://localhost:8080/exist/rest"
EXISTDB_USER = "admin"
EXISTDB_PASS = ""  # Configure via env


@tool
async def librarian_store(
    collection: str,
    document_name: str,
    content: str,
) -> ToolResult:
    """
    Store an XML document in exist-db.

    Args:
        collection: Target collection path (e.g., "/db/agents/greeter")
        document_name: Document filename (e.g., "conversation-001.xml")
        content: XML content

    Returns:
        path: Full path to stored document
    """
    # TODO: Implement with exist-db REST API
    # import aiohttp
    # url = f"{EXISTDB_URL}{collection}/{document_name}"
    # async with aiohttp.ClientSession() as session:
    #     async with session.put(
    #         url,
    #         data=content,
    #         headers={"Content-Type": "application/xml"},
    #         auth=aiohttp.BasicAuth(EXISTDB_USER, EXISTDB_PASS),
    #     ) as resp:
    #         if resp.status in (200, 201):
    #             return ToolResult(success=True, data={"path": f"{collection}/{document_name}"})
    #         return ToolResult(success=False, error=await resp.text())

    return ToolResult(success=False, error="Not implemented - configure exist-db")


@tool
async def librarian_get(
    path: str,
) -> ToolResult:
    """
    Retrieve a document by path.

    Args:
        path: Full document path (e.g., "/db/agents/greeter/conversation-001.xml")

    Returns:
        content: XML content
    """
    # TODO: Implement with exist-db REST API
    # import aiohttp
    # url = f"{EXISTDB_URL}{path}"
    # async with aiohttp.ClientSession() as session:
    #     async with session.get(
    #         url,
    #         auth=aiohttp.BasicAuth(EXISTDB_USER, EXISTDB_PASS),
    #     ) as resp:
    #         if resp.status == 200:
    #             return ToolResult(success=True, data=await resp.text())
    #         return ToolResult(success=False, error=f"Not found: {path}")

    return ToolResult(success=False, error="Not implemented - configure exist-db")


@tool
async def librarian_query(
    query: str,
    collection: Optional[str] = None,
    variables: Optional[Dict[str, str]] = None,
) -> ToolResult:
    """
    Execute an XQuery against exist-db.

    Args:
        query: XQuery expression
        collection: Limit to collection (optional)
        variables: External variables to bind (optional)

    Returns:
        results: Array of matching XML fragments

    Examples:
        - '//message[@from="greeter"]'
        - 'for $m in //message where $m/@timestamp > $since return $m'
    """
    # TODO: Implement with exist-db REST API
    # The exist-db REST API accepts XQuery via POST to /exist/rest/db
    # with _query parameter or as request body

    return ToolResult(success=False, error="Not implemented - configure exist-db")


@tool
async def librarian_search(
    query: str,
    collection: Optional[str] = None,
    num_results: int = 10,
) -> ToolResult:
    """
    Full-text search across documents.

    Args:
        query: Search terms
        collection: Limit to collection (optional)
        num_results: Max results (default: 10)

    Returns:
        results: Array of {path, score, snippet}
    """
    # TODO: Implement with exist-db full-text search
    # exist-db supports Lucene-based full-text indexing
    # Query using ft:query() function in XQuery

    return ToolResult(success=False, error="Not implemented - configure exist-db")