#!/usr/bin/env python

# Copyright 2024 The HuggingFace Inc. team. All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

import abc

import numpy as np

from .configs import CameraConfig, ColorMode


# NOTE(Steven): Consider something like configure() if makes sense for both cameras
class Camera(abc.ABC):
    def __init__(self, config: CameraConfig):
        self.fps: int | None = config.fps
        self.width: int | None = config.width
        self.height: int | None = config.height

    @property
    @abc.abstractmethod
    def is_connected(self) -> bool:
        pass

    @abc.abstractmethod
    def connect(self, do_warmup_read: bool = True) -> None:
        pass

    @abc.abstractmethod
    def read(self, color_mode: ColorMode | None = None) -> np.ndarray:
        pass

    @abc.abstractmethod
    def async_read(self, timeout_ms: float = 2000) -> np.ndarray:
        pass

    @abc.abstractmethod
    def disconnect(self) -> None:
        pass