"""File and attachment management tools."""

import json
import base64
from mcp.types import Tool
from frappe_mcp.client.frappe_api import FrappeClient


def tools() -> list[Tool]:
    return [
        Tool(
            name="frappe_list_files",
            description="List files in Frappe's file manager, optionally filtered by attached document.",
            inputSchema={
                "type": "object",
                "properties": {
                    "attached_to_doctype": {"type": "string"},
                    "attached_to_name": {"type": "string"},
                    "folder": {"type": "string", "description": "e.g. 'Home/Attachments'"},
                    "is_private": {"type": "integer", "description": "1 = private, 0 = public"},
                    "limit": {"type": "integer", "default": 20},
                },
            },
        ),
        Tool(
            name="frappe_get_file",
            description="Get details of a file by its name/ID.",
            inputSchema={
                "type": "object",
                "required": ["name"],
                "properties": {
                    "name": {"type": "string"},
                },
            },
        ),
        Tool(
            name="frappe_upload_file_base64",
            description=(
                "Upload a file to Frappe by providing base64-encoded content. "
                "Optionally attach it to a document."
            ),
            inputSchema={
                "type": "object",
                "required": ["filename", "content_base64"],
                "properties": {
                    "filename": {"type": "string", "description": "File name with extension"},
                    "content_base64": {"type": "string", "description": "Base64-encoded file content"},
                    "attached_to_doctype": {"type": "string"},
                    "attached_to_name": {"type": "string"},
                    "attached_to_field": {"type": "string"},
                    "is_private": {"type": "integer", "default": 1},
                    "folder": {"type": "string", "default": "Home/Attachments"},
                },
            },
        ),
        Tool(
            name="frappe_delete_file",
            description="Delete a file from Frappe.",
            inputSchema={
                "type": "object",
                "required": ["name"],
                "properties": {
                    "name": {"type": "string", "description": "File document name"},
                },
            },
        ),
        Tool(
            name="frappe_move_file",
            description="Move a file to a different folder.",
            inputSchema={
                "type": "object",
                "required": ["name", "folder"],
                "properties": {
                    "name": {"type": "string"},
                    "folder": {"type": "string", "description": "Target folder path"},
                },
            },
        ),
        Tool(
            name="frappe_create_folder",
            description="Create a new folder in the Frappe file manager.",
            inputSchema={
                "type": "object",
                "required": ["folder_name"],
                "properties": {
                    "folder_name": {"type": "string"},
                    "parent_folder": {"type": "string", "default": "Home"},
                },
            },
        ),
    ]


def handlers() -> dict:
    return {
        "frappe_list_files": _list_files,
        "frappe_get_file": _get_file,
        "frappe_upload_file_base64": _upload_file_base64,
        "frappe_delete_file": _delete_file,
        "frappe_move_file": _move_file,
        "frappe_create_folder": _create_folder,
    }


async def _list_files(args: dict) -> str:
    client = FrappeClient()
    filters = []
    if dt := args.get("attached_to_doctype"):
        filters.append(["attached_to_doctype", "=", dt])
    if name := args.get("attached_to_name"):
        filters.append(["attached_to_name", "=", name])
    if folder := args.get("folder"):
        filters.append(["folder", "=", folder])
    if "is_private" in args:
        filters.append(["is_private", "=", args["is_private"]])
    result = await client.get_list(
        "File",
        fields=["name", "file_name", "file_url", "file_size", "is_private", "folder", "attached_to_doctype", "attached_to_name"],
        filters=filters if filters else None,
        limit=args.get("limit", 20),
    )
    return json.dumps(result, indent=2)


async def _get_file(args: dict) -> str:
    client = FrappeClient()
    result = await client.get_doc("File", args["name"])
    return json.dumps(result, indent=2)


async def _upload_file_base64(args: dict) -> str:
    client = FrappeClient()
    payload = {
        "filename": args["filename"],
        "filedata": args["content_base64"],
        "is_private": args.get("is_private", 1),
        "folder": args.get("folder", "Home/Attachments"),
    }
    if dt := args.get("attached_to_doctype"):
        payload["doctype"] = dt
    if name := args.get("attached_to_name"):
        payload["docname"] = name
    if field := args.get("attached_to_field"):
        payload["fieldname"] = field
    result = await client.call_method("frappe.client.attach_file", **payload)
    return json.dumps(result, indent=2)


async def _delete_file(args: dict) -> str:
    client = FrappeClient()
    result = await client.delete_doc("File", args["name"])
    return json.dumps(result, indent=2)


async def _move_file(args: dict) -> str:
    client = FrappeClient()
    result = await client.update_doc("File", args["name"], {"folder": args["folder"]})
    return json.dumps(result, indent=2)


async def _create_folder(args: dict) -> str:
    client = FrappeClient()
    result = await client.call_method(
        "frappe.core.doctype.file.file.create_new_folder",
        file_name=args["folder_name"],
        folder=args.get("parent_folder", "Home"),
    )
    return json.dumps(result, indent=2)