"""Space management endpoints."""
from typing import Annotated

from fastapi import APIRouter, Depends, HTTPException, status
from sqlalchemy.orm import Session

from app.core.deps import get_current_admin, get_current_user, get_db
from app.models.space import Space
from app.models.user import User
from app.schemas.space import SpaceCreate, SpaceResponse, SpaceStatusUpdate, SpaceUpdate
from app.services.audit_service import log_action

router = APIRouter(prefix="/spaces", tags=["spaces"])
admin_router = APIRouter(prefix="/admin/spaces", tags=["admin"])


@router.get("", response_model=list[SpaceResponse])
def list_spaces(
    db: Annotated[Session, Depends(get_db)],
    current_user: Annotated[User, Depends(get_current_user)],
) -> list[Space]:
    """
    Get list of spaces.

    - Users see only active spaces
    - Admins see all spaces (active + inactive)
    """
    query = db.query(Space)

    # Filter by active status for non-admin users
    if current_user.role != "admin":
        query = query.filter(Space.is_active == True)  # noqa: E712

    spaces = query.order_by(Space.name).all()
    return spaces


@admin_router.post("", response_model=SpaceResponse, status_code=status.HTTP_201_CREATED)
def create_space(
    space_data: SpaceCreate,
    db: Annotated[Session, Depends(get_db)],
    current_admin: Annotated[User, Depends(get_current_admin)],
) -> Space:
    """
    Create a new space (admin only).

    - name: required, non-empty
    - type: "sala" or "birou"
    - capacity: must be > 0
    - description: optional
    """
    # Check if space with same name exists
    existing = db.query(Space).filter(Space.name == space_data.name).first()
    if existing:
        raise HTTPException(
            status_code=status.HTTP_400_BAD_REQUEST,
            detail=f"Space with name '{space_data.name}' already exists",
        )

    space = Space(
        name=space_data.name,
        type=space_data.type,
        capacity=space_data.capacity,
        description=space_data.description,
        is_active=True,
    )

    db.add(space)
    db.commit()
    db.refresh(space)

    # Log the action
    log_action(
        db=db,
        action="space_created",
        user_id=current_admin.id,
        target_type="space",
        target_id=space.id,
        details={"name": space.name, "type": space.type, "capacity": space.capacity}
    )

    return space


@admin_router.put("/{space_id}", response_model=SpaceResponse)
def update_space(
    space_id: int,
    space_data: SpaceUpdate,
    db: Annotated[Session, Depends(get_db)],
    current_admin: Annotated[User, Depends(get_current_admin)],
) -> Space:
    """
    Update an existing space (admin only).

    All fields are required (full update).
    """
    space = db.query(Space).filter(Space.id == space_id).first()
    if not space:
        raise HTTPException(
            status_code=status.HTTP_404_NOT_FOUND,
            detail="Space not found",
        )

    # Check if new name conflicts with another space
    if space_data.name != space.name:
        existing = db.query(Space).filter(Space.name == space_data.name).first()
        if existing:
            raise HTTPException(
                status_code=status.HTTP_400_BAD_REQUEST,
                detail=f"Space with name '{space_data.name}' already exists",
            )

    # Track what changed
    updated_fields = []
    if space.name != space_data.name:
        updated_fields.append("name")
    if space.type != space_data.type:
        updated_fields.append("type")
    if space.capacity != space_data.capacity:
        updated_fields.append("capacity")
    if space.description != space_data.description:
        updated_fields.append("description")

    setattr(space, "name", space_data.name)
    setattr(space, "type", space_data.type)
    setattr(space, "capacity", space_data.capacity)
    setattr(space, "description", space_data.description)

    db.commit()
    db.refresh(space)

    # Log the action
    log_action(
        db=db,
        action="space_updated",
        user_id=current_admin.id,
        target_type="space",
        target_id=space.id,
        details={"updated_fields": updated_fields}
    )

    return space


@admin_router.patch("/{space_id}/status", response_model=SpaceResponse)
def update_space_status(
    space_id: int,
    status_data: SpaceStatusUpdate,
    db: Annotated[Session, Depends(get_db)],
    _: Annotated[User, Depends(get_current_admin)],
) -> Space:
    """
    Activate or deactivate a space (admin only).

    Deactivated spaces will not appear in booking lists for users.
    """
    space = db.query(Space).filter(Space.id == space_id).first()
    if not space:
        raise HTTPException(
            status_code=status.HTTP_404_NOT_FOUND,
            detail="Space not found",
        )

    setattr(space, "is_active", status_data.is_active)

    db.commit()
    db.refresh(space)

    return space