from fastapi import APIRouter, Depends, Query, status

from app.api.dependencies import get_directory_service
from app.schemas.directory import (
    CreateDirectoryRequest,
    CreateDirectoryResponse,
    DirectoryChildrenResponse,
    DirectoryItem,
    DirectorySummary,
    MoveDirectoryRequest,
    RenameDirectoryRequest,
)
from app.services.directory_service import DirectoryService

router = APIRouter()


@router.get("/{directory_id}/children", response_model=DirectoryChildrenResponse)
async def list_directory_children(
    directory_id: str,
    _cursor: str | None = Query(default=None, alias="cursor"),
    _limit: int = Query(default=100, ge=1, le=500, alias="limit"),
    service: DirectoryService = Depends(get_directory_service),
) -> DirectoryChildrenResponse:
    result = await service.list_children(directory_id)
    return DirectoryChildrenResponse(
        directory=DirectorySummary.model_validate(result.directory, from_attributes=True),
        items=[
            DirectoryItem(
                kind=item.kind,
                id=item.item.id,
                name=item.item.name,
                mime_type=getattr(item.item, "mime_type", None),
                size_bytes=getattr(item.item, "size_bytes", None),
                created_at=item.item.created_at,
                updated_at=item.item.updated_at,
            )
            for item in result.children
        ],
        next_cursor=None,
    )


@router.post("", response_model=CreateDirectoryResponse, status_code=status.HTTP_201_CREATED)
async def create_directory(
    payload: CreateDirectoryRequest,
    service: DirectoryService = Depends(get_directory_service),
) -> CreateDirectoryResponse:
    directory = await service.create_directory(parent_id=payload.parent_id, name=payload.name)
    return CreateDirectoryResponse(
        directory=DirectorySummary.model_validate(directory, from_attributes=True)
    )


@router.post("/{directory_id}/rename", response_model=CreateDirectoryResponse)
async def rename_directory(
    directory_id: str,
    payload: RenameDirectoryRequest,
    service: DirectoryService = Depends(get_directory_service),
) -> CreateDirectoryResponse:
    directory = await service.rename_directory(directory_id=directory_id, name=payload.name)
    return CreateDirectoryResponse(directory=DirectorySummary.model_validate(directory, from_attributes=True))


@router.post("/{directory_id}/move", response_model=CreateDirectoryResponse)
async def move_directory(
    directory_id: str,
    payload: MoveDirectoryRequest,
    service: DirectoryService = Depends(get_directory_service),
) -> CreateDirectoryResponse:
    directory = await service.move_directory(directory_id=directory_id, target_parent_id=payload.target_parent_id)
    return CreateDirectoryResponse(directory=DirectorySummary.model_validate(directory, from_attributes=True))