# License: Apache-2.0 License
# Created by: Patrick Lumbantobing, VertoX-AI
# Copyright (c) 2026 VertoX-AI. All rights reserved.
#
# This work is licensed under the Apache-2.0 License.
# To view a copy of this license, visit
# https://www.apache.org/licenses/LICENSE-2.0

from __future__ import annotations

from speech_text_data_aligners.core.models import (
    AlignmentOutcome,
    AlignmentProvenance,
    AlignmentRequest,
    AlignmentResult,
)
from speech_text_data_aligners.core.protocols import AlignmentBackend


class FakeBackend:
    @property
    def name(self) -> str:
        return "fake"

    def align(self, request: AlignmentRequest) -> AlignmentResult:
        return AlignmentResult(request.request_id, (), AlignmentProvenance("fake"))

    def align_batch(
        self, requests: tuple[AlignmentRequest, ...]
    ) -> tuple[AlignmentOutcome, ...]:
        return tuple(
            AlignmentOutcome(result=self.align(request)) for request in requests
        )


def test_runtime_protocol_accepts_structural_backend() -> None:
    assert isinstance(FakeBackend(), AlignmentBackend)
    assert not isinstance(object(), AlignmentBackend)