/*
 * Copyright 2022 The Android Open Source Project
 *
 * 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
 *
 *     https://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.
 */

package com.cbnu.cats.ui.utils

import android.graphics.Rect
import androidx.window.layout.FoldingFeature
import kotlin.contracts.ExperimentalContracts
import kotlin.contracts.contract

/**
 * Information about the posture of the device
 */
sealed interface DevicePosture {
    object NormalPosture : DevicePosture

    data class BookPosture(
        val hingePosition: Rect
    ) : DevicePosture

    data class Separating(
        val hingePosition: Rect,
        var orientation: FoldingFeature.Orientation
    ) : DevicePosture
}

@OptIn(ExperimentalContracts::class)
fun isBookPosture(foldFeature: FoldingFeature?): Boolean {
    contract { returns(true) implies (foldFeature != null) }
    return foldFeature?.state == FoldingFeature.State.HALF_OPENED &&
        foldFeature.orientation == FoldingFeature.Orientation.VERTICAL
}

@OptIn(ExperimentalContracts::class)
fun isSeparating(foldFeature: FoldingFeature?): Boolean {
    contract { returns(true) implies (foldFeature != null) }
    return foldFeature?.state == FoldingFeature.State.FLAT && foldFeature.isSeparating
}

/**
 * Different type of navigation supported by app depending on device size and state.
 */
enum class ReplyNavigationType {
    BOTTOM_NAVIGATION, NAVIGATION_RAIL, PERMANENT_NAVIGATION_DRAWER
}

/**
 * Different position of navigation content inside Navigation Rail, Navigation Drawer depending on device size and state.
 */
enum class ReplyNavigationContentPosition {
    TOP, CENTER
}

/**
 * App Content shown depending on device size and state.
 */
enum class ReplyContentType {
    SINGLE_PANE, DUAL_PANE
}