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

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

from app.core.deps import (
    get_current_admin,
    get_current_manager_or_superadmin,
    get_current_user,
    get_db,
    get_optional_user,
)
from app.core.permissions import get_manager_property_ids, verify_property_access
from app.models.organization import Organization
from app.models.property import Property
from app.models.property_access import PropertyAccess
from app.models.property_manager import PropertyManager
from app.models.property_settings import PropertySettings
from app.models.space import Space
from app.models.user import User
from app.schemas.property import (
    PropertyAccessCreate,
    PropertyAccessResponse,
    PropertyCreate,
    PropertyManagerInfo,
    PropertyResponse,
    PropertySettingsResponse,
    PropertySettingsUpdate,
    PropertyStatusUpdate,
    PropertyUpdate,
    PropertyWithSpaces,
)
from app.schemas.space import SpaceResponse
from app.services.audit_service import log_action


def _get_property_managers(db: Session, property_id: int) -> list[PropertyManagerInfo]:
    """Get manager info for a property."""
    managers = (
        db.query(User)
        .join(PropertyManager, PropertyManager.user_id == User.id)
        .filter(PropertyManager.property_id == property_id)
        .all()
    )
    return [
        PropertyManagerInfo(user_id=m.id, full_name=m.full_name, email=m.email)
        for m in managers
    ]

router = APIRouter(prefix="/properties", tags=["properties"])
manager_router = APIRouter(prefix="/manager/properties", tags=["properties-manager"])
admin_router = APIRouter(prefix="/admin/properties", tags=["properties-admin"])


# === User-facing endpoints ===


@router.get("", response_model=list[PropertyResponse])
def list_properties(
    db: Annotated[Session, Depends(get_db)],
    current_user: Annotated[User | None, Depends(get_optional_user)],
    managed_only: bool = False,
) -> list[PropertyResponse]:
    """List visible properties based on user role.

    Query params:
    - managed_only: If true, managers only see properties they manage (for management pages)
    """
    if current_user and current_user.role in ("admin", "superadmin"):
        # Superadmin sees all
        properties = db.query(Property).filter(Property.is_active == True).order_by(Property.name).all()  # noqa: E712
    elif current_user and current_user.role == "manager":
        # Manager sees managed properties (+ public if not managed_only)
        managed_ids = get_manager_property_ids(db, current_user.id)
        if managed_only:
            properties = (
                db.query(Property)
                .filter(
                    Property.is_active == True,  # noqa: E712
                    Property.id.in_(managed_ids),
                )
                .order_by(Property.name)
                .all()
            )
        else:
            properties = (
                db.query(Property)
                .filter(
                    Property.is_active == True,  # noqa: E712
                    (Property.is_public == True) | (Property.id.in_(managed_ids)),  # noqa: E712
                )
                .order_by(Property.name)
                .all()
            )
    elif current_user:
        # Regular user sees public + explicitly granted
        from app.core.permissions import get_user_accessible_property_ids
        accessible_ids = get_user_accessible_property_ids(db, current_user.id)
        properties = (
            db.query(Property)
            .filter(Property.is_active == True, Property.id.in_(accessible_ids))  # noqa: E712
            .order_by(Property.name)
            .all()
        )
    else:
        # Anonymous sees only public
        properties = (
            db.query(Property)
            .filter(Property.is_public == True, Property.is_active == True)  # noqa: E712
            .order_by(Property.name)
            .all()
        )

    result = []
    for p in properties:
        space_count = db.query(Space).filter(Space.property_id == p.id, Space.is_active == True).count()  # noqa: E712
        result.append(PropertyResponse(
            id=p.id,
            name=p.name,
            description=p.description,
            address=p.address,
            is_public=p.is_public,
            is_active=p.is_active,
            created_at=p.created_at,
            space_count=space_count,
            managers=_get_property_managers(db, p.id),
        ))
    return result


@router.get("/{property_id}", response_model=PropertyWithSpaces)
def get_property(
    property_id: int,
    db: Annotated[Session, Depends(get_db)],
    current_user: Annotated[User | None, Depends(get_optional_user)],
) -> PropertyWithSpaces:
    """Get property detail with visibility check."""
    verify_property_access(db, current_user, property_id)
    prop = db.query(Property).filter(Property.id == property_id).first()
    spaces = db.query(Space).filter(Space.property_id == property_id, Space.is_active == True).all()  # noqa: E712
    space_count = len(spaces)

    return PropertyWithSpaces(
        id=prop.id,
        name=prop.name,
        description=prop.description,
        address=prop.address,
        is_public=prop.is_public,
        is_active=prop.is_active,
        created_at=prop.created_at,
        space_count=space_count,
        managers=_get_property_managers(db, prop.id),
        spaces=[SpaceResponse.model_validate(s) for s in spaces],
    )


@router.get("/{property_id}/spaces", response_model=list[SpaceResponse])
def get_property_spaces(
    property_id: int,
    db: Annotated[Session, Depends(get_db)],
    current_user: Annotated[User | None, Depends(get_optional_user)],
    include_inactive: bool = False,
) -> list[SpaceResponse]:
    """List spaces in a property."""
    verify_property_access(db, current_user, property_id)
    query = db.query(Space).filter(Space.property_id == property_id)

    # Managers/admins can see inactive spaces, regular users cannot
    is_admin_like = current_user and current_user.role in ("admin", "superadmin", "manager")
    if not (include_inactive and is_admin_like):
        query = query.filter(Space.is_active == True)  # noqa: E712

    spaces = query.order_by(Space.name).all()
    return [SpaceResponse.model_validate(s) for s in spaces]


# === Manager endpoints ===


@manager_router.post("", response_model=PropertyResponse, status_code=status.HTTP_201_CREATED)
def create_property(
    data: PropertyCreate,
    db: Annotated[Session, Depends(get_db)],
    current_user: Annotated[User, Depends(get_current_manager_or_superadmin)],
) -> PropertyResponse:
    """Create a property. Creator becomes manager."""
    prop = Property(
        name=data.name,
        description=data.description,
        address=data.address,
        is_public=data.is_public,
    )
    db.add(prop)
    db.commit()
    db.refresh(prop)

    # Creator becomes manager
    pm = PropertyManager(property_id=prop.id, user_id=current_user.id)
    db.add(pm)
    db.commit()

    log_action(
        db=db,
        action="property_created",
        user_id=current_user.id,
        target_type="property",
        target_id=prop.id,
        details={"name": prop.name},
    )

    return PropertyResponse(
        id=prop.id,
        name=prop.name,
        description=prop.description,
        address=prop.address,
        is_public=prop.is_public,
        is_active=prop.is_active,
        created_at=prop.created_at,
        space_count=0,
        managers=_get_property_managers(db, prop.id),
    )


@manager_router.put("/{property_id}", response_model=PropertyResponse)
def update_property(
    property_id: int,
    data: PropertyUpdate,
    db: Annotated[Session, Depends(get_db)],
    current_user: Annotated[User, Depends(get_current_manager_or_superadmin)],
) -> PropertyResponse:
    """Update a property (ownership check)."""
    verify_property_access(db, current_user, property_id, require_manager=True)
    prop = db.query(Property).filter(Property.id == property_id).first()

    if data.name is not None:
        prop.name = data.name
    if data.description is not None:
        prop.description = data.description
    if data.address is not None:
        prop.address = data.address
    if data.is_public is not None:
        prop.is_public = data.is_public

    db.commit()
    db.refresh(prop)

    space_count = db.query(Space).filter(Space.property_id == prop.id, Space.is_active == True).count()  # noqa: E712
    return PropertyResponse(
        id=prop.id,
        name=prop.name,
        description=prop.description,
        address=prop.address,
        is_public=prop.is_public,
        is_active=prop.is_active,
        created_at=prop.created_at,
        space_count=space_count,
        managers=_get_property_managers(db, prop.id),
    )


@manager_router.patch("/{property_id}/status", response_model=PropertyResponse)
def update_property_status(
    property_id: int,
    data: PropertyStatusUpdate,
    db: Annotated[Session, Depends(get_db)],
    current_user: Annotated[User, Depends(get_current_manager_or_superadmin)],
) -> PropertyResponse:
    """Activate/deactivate a property."""
    verify_property_access(db, current_user, property_id, require_manager=True)
    prop = db.query(Property).filter(Property.id == property_id).first()
    prop.is_active = data.is_active
    db.commit()
    db.refresh(prop)

    space_count = db.query(Space).filter(Space.property_id == prop.id, Space.is_active == True).count()  # noqa: E712
    return PropertyResponse(
        id=prop.id,
        name=prop.name,
        description=prop.description,
        address=prop.address,
        is_public=prop.is_public,
        is_active=prop.is_active,
        created_at=prop.created_at,
        space_count=space_count,
        managers=_get_property_managers(db, prop.id),
    )


@manager_router.delete("/{property_id}", status_code=status.HTTP_204_NO_CONTENT)
def delete_property(
    property_id: int,
    db: Annotated[Session, Depends(get_db)],
    current_user: Annotated[User, Depends(get_current_manager_or_superadmin)],
) -> None:
    """Delete a property (only if it has no active bookings)."""
    verify_property_access(db, current_user, property_id, require_manager=True)
    prop = db.query(Property).filter(Property.id == property_id).first()
    if not prop:
        raise HTTPException(status_code=404, detail="Property not found")

    from app.models.booking import Booking

    # Check for active bookings (pending or approved) in this property's spaces
    space_ids = [s.id for s in db.query(Space).filter(Space.property_id == property_id).all()]
    if space_ids:
        active_bookings = (
            db.query(Booking)
            .filter(
                Booking.space_id.in_(space_ids),
                Booking.status.in_(["pending", "approved"]),
            )
            .count()
        )
        if active_bookings > 0:
            raise HTTPException(
                status_code=status.HTTP_400_BAD_REQUEST,
                detail=f"Cannot delete property with {active_bookings} active booking(s). Cancel or reject them first.",
            )

    # Delete related data
    db.query(PropertyManager).filter(PropertyManager.property_id == property_id).delete()
    db.query(PropertyAccess).filter(PropertyAccess.property_id == property_id).delete()
    db.query(PropertySettings).filter(PropertySettings.property_id == property_id).delete()

    # Unlink spaces (set property_id to None) rather than deleting them
    db.query(Space).filter(Space.property_id == property_id).update({"property_id": None})

    db.delete(prop)
    db.commit()

    log_action(
        db=db,
        action="property_deleted",
        user_id=current_user.id,
        target_type="property",
        target_id=property_id,
        details={"name": prop.name},
    )


@manager_router.get("/{property_id}/access", response_model=list[PropertyAccessResponse])
def list_property_access(
    property_id: int,
    db: Annotated[Session, Depends(get_db)],
    current_user: Annotated[User, Depends(get_current_manager_or_superadmin)],
) -> list[PropertyAccessResponse]:
    """List access grants for a property."""
    verify_property_access(db, current_user, property_id, require_manager=True)
    accesses = db.query(PropertyAccess).filter(PropertyAccess.property_id == property_id).all()

    result = []
    for a in accesses:
        user_name = None
        user_email = None
        org_name = None
        if a.user_id:
            u = db.query(User).filter(User.id == a.user_id).first()
            if u:
                user_name = u.full_name
                user_email = u.email
        if a.organization_id:
            org = db.query(Organization).filter(Organization.id == a.organization_id).first()
            if org:
                org_name = org.name
        result.append(PropertyAccessResponse(
            id=a.id,
            property_id=a.property_id,
            user_id=a.user_id,
            organization_id=a.organization_id,
            granted_by=a.granted_by,
            user_name=user_name,
            user_email=user_email,
            organization_name=org_name,
            created_at=a.created_at,
        ))
    return result


@manager_router.post("/{property_id}/access", response_model=PropertyAccessResponse, status_code=status.HTTP_201_CREATED)
def grant_property_access(
    property_id: int,
    data: PropertyAccessCreate,
    db: Annotated[Session, Depends(get_db)],
    current_user: Annotated[User, Depends(get_current_manager_or_superadmin)],
) -> PropertyAccessResponse:
    """Grant access to a property."""
    verify_property_access(db, current_user, property_id, require_manager=True)

    if not data.user_id and not data.organization_id:
        raise HTTPException(status_code=400, detail="Must provide user_id or organization_id")

    access = PropertyAccess(
        property_id=property_id,
        user_id=data.user_id,
        organization_id=data.organization_id,
        granted_by=current_user.id,
    )
    db.add(access)
    db.commit()
    db.refresh(access)

    user_name = None
    user_email = None
    org_name = None
    if access.user_id:
        u = db.query(User).filter(User.id == access.user_id).first()
        if u:
            user_name = u.full_name
            user_email = u.email
    if access.organization_id:
        org = db.query(Organization).filter(Organization.id == access.organization_id).first()
        if org:
            org_name = org.name

    return PropertyAccessResponse(
        id=access.id,
        property_id=access.property_id,
        user_id=access.user_id,
        organization_id=access.organization_id,
        granted_by=access.granted_by,
        user_name=user_name,
        user_email=user_email,
        organization_name=org_name,
        created_at=access.created_at,
    )


@manager_router.delete("/{property_id}/access/{access_id}", status_code=status.HTTP_204_NO_CONTENT)
def revoke_property_access(
    property_id: int,
    access_id: int,
    db: Annotated[Session, Depends(get_db)],
    current_user: Annotated[User, Depends(get_current_manager_or_superadmin)],
) -> None:
    """Revoke access to a property."""
    verify_property_access(db, current_user, property_id, require_manager=True)
    access = db.query(PropertyAccess).filter(
        PropertyAccess.id == access_id,
        PropertyAccess.property_id == property_id,
    ).first()
    if not access:
        raise HTTPException(status_code=404, detail="Access grant not found")
    db.delete(access)
    db.commit()


@manager_router.get("/{property_id}/settings", response_model=PropertySettingsResponse)
def get_property_settings(
    property_id: int,
    db: Annotated[Session, Depends(get_db)],
    current_user: Annotated[User, Depends(get_current_manager_or_superadmin)],
) -> PropertySettingsResponse:
    """Get property settings."""
    verify_property_access(db, current_user, property_id, require_manager=True)
    ps = db.query(PropertySettings).filter(PropertySettings.property_id == property_id).first()
    if not ps:
        # Create default settings
        ps = PropertySettings(property_id=property_id, require_approval=True)
        db.add(ps)
        db.commit()
        db.refresh(ps)
    return PropertySettingsResponse.model_validate(ps)


@manager_router.put("/{property_id}/settings", response_model=PropertySettingsResponse)
def update_property_settings(
    property_id: int,
    data: PropertySettingsUpdate,
    db: Annotated[Session, Depends(get_db)],
    current_user: Annotated[User, Depends(get_current_manager_or_superadmin)],
) -> PropertySettingsResponse:
    """Update property settings."""
    verify_property_access(db, current_user, property_id, require_manager=True)
    ps = db.query(PropertySettings).filter(PropertySettings.property_id == property_id).first()
    if not ps:
        ps = PropertySettings(property_id=property_id)
        db.add(ps)
        db.commit()
        db.refresh(ps)

    for field in data.model_fields:
        value = getattr(data, field)
        if value is not None or field == "require_approval":
            setattr(ps, field, value)

    db.commit()
    db.refresh(ps)
    return PropertySettingsResponse.model_validate(ps)


# === Superadmin endpoints ===


@admin_router.get("", response_model=list[PropertyResponse])
def admin_list_all_properties(
    db: Annotated[Session, Depends(get_db)],
    _: Annotated[User, Depends(get_current_admin)],
    include_inactive: bool = Query(False),
) -> list[PropertyResponse]:
    """Superadmin: list all properties."""
    query = db.query(Property)
    if not include_inactive:
        query = query.filter(Property.is_active == True)  # noqa: E712
    properties = query.order_by(Property.name).all()

    result = []
    for p in properties:
        space_count = db.query(Space).filter(Space.property_id == p.id).count()
        result.append(PropertyResponse(
            id=p.id,
            name=p.name,
            description=p.description,
            address=p.address,
            is_public=p.is_public,
            is_active=p.is_active,
            created_at=p.created_at,
            space_count=space_count,
            managers=_get_property_managers(db, p.id),
        ))
    return result


@admin_router.post("/{property_id}/managers", status_code=status.HTTP_201_CREATED)
def assign_property_manager(
    property_id: int,
    user_id: int = Query(...),
    db: Session = Depends(get_db),
    current_admin: User = Depends(get_current_admin),
) -> dict:
    """Superadmin: assign a manager to a property."""
    prop = db.query(Property).filter(Property.id == property_id).first()
    if not prop:
        raise HTTPException(status_code=404, detail="Property not found")

    user = db.query(User).filter(User.id == user_id).first()
    if not user:
        raise HTTPException(status_code=404, detail="User not found")

    existing = db.query(PropertyManager).filter(
        PropertyManager.property_id == property_id,
        PropertyManager.user_id == user_id,
    ).first()
    if existing:
        raise HTTPException(status_code=400, detail="User is already a manager of this property")

    pm = PropertyManager(property_id=property_id, user_id=user_id)
    db.add(pm)

    # Ensure user has manager role
    if user.role == "user":
        user.role = "manager"

    db.commit()

    return {"message": f"User {user.full_name} assigned as manager of {prop.name}"}


@admin_router.delete("/{property_id}/managers/{user_id}", status_code=status.HTTP_204_NO_CONTENT)
def remove_property_manager(
    property_id: int,
    user_id: int,
    db: Session = Depends(get_db),
    current_admin: User = Depends(get_current_admin),
) -> None:
    """Superadmin: remove a manager from a property."""
    pm = db.query(PropertyManager).filter(
        PropertyManager.property_id == property_id,
        PropertyManager.user_id == user_id,
    ).first()
    if not pm:
        raise HTTPException(status_code=404, detail="Manager assignment not found")

    db.delete(pm)
    db.commit()