/*
 * Copyright (C) 2025 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
 *
 *      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.
 */

package com.android.settings.display

import android.app.settings.SettingsEnums
import android.content.Context
import android.hardware.display.ColorDisplayManager
import androidx.fragment.app.Fragment
import com.android.settings.R
import com.android.settings.Settings.NightDisplaySettingsActivity
import com.android.settings.core.PreferenceScreenMixin
import com.android.settings.flags.Flags
import com.android.settings.utils.makeLaunchIntent
import com.android.settingslib.PrimarySwitchPreferenceBinding
import com.android.settingslib.datastore.KeyValueStore
import com.android.settingslib.datastore.SettingsSecureStore
import com.android.settingslib.metadata.BooleanValuePreference
import com.android.settingslib.metadata.PreferenceAvailabilityProvider
import com.android.settingslib.metadata.PreferenceHierarchy
import com.android.settingslib.metadata.PreferenceMetadata
import com.android.settingslib.metadata.PreferenceSummaryProvider
import com.android.settingslib.metadata.ProvidePreferenceScreen
import com.android.settingslib.metadata.ReadWritePermit
import com.android.settingslib.metadata.SensitivityLevel
import com.android.settingslib.metadata.preferenceHierarchy
import com.android.settingslib.preference.PreferenceBinding
import com.android.settingslib.widget.TopIntroPreference
import kotlinx.coroutines.CoroutineScope

// LINT.IfChange
@ProvidePreferenceScreen(NightDisplayScreen.KEY)
open class NightDisplayScreen(val context: Context) :
    PreferenceScreenMixin,
    BooleanValuePreference,
    PrimarySwitchPreferenceBinding,
    PreferenceAvailabilityProvider,
    PreferenceSummaryProvider {

    val colorDisplayManager: ColorDisplayManager? =
        context.getSystemService(ColorDisplayManager::class.java)

    val timeFormatter: NightDisplayTimeFormatter
        get() = NightDisplayTimeFormatter(context)

    override fun getSummary(context: Context): CharSequence? =
        timeFormatter.getAutoModeSummary(context, colorDisplayManager)

    override val key: String
        get() = KEY

    override val highlightMenuKey: Int
        get() = R.string.menu_key_display

    override val title: Int
        get() = R.string.night_display_title

    override val keywords: Int
        get() = R.string.keywords_display_night_display

    override fun isFlagEnabled(context: Context) = Flags.catalystNightDisplay()

    override fun hasCompleteHierarchy() = false

    override fun getReadPermissions(context: Context) = SettingsSecureStore.getReadPermissions()

    override fun getWritePermissions(context: Context) = SettingsSecureStore.getWritePermissions()

    override fun getReadPermit(context: Context, callingPid: Int, callingUid: Int) =
        ReadWritePermit.ALLOW

    override fun getWritePermit(context: Context, callingPid: Int, callingUid: Int) =
        ReadWritePermit.ALLOW

    override fun storage(context: Context): KeyValueStore = NightDisplayStorage(context)

    override fun fragmentClass(): Class<out Fragment>? = NightDisplaySettings::class.java

    override fun getLaunchIntent(context: Context, metadata: PreferenceMetadata?) =
        makeLaunchIntent(context, NightDisplaySettingsActivity::class.java, metadata?.key)

    override fun getPreferenceHierarchy(
        context: Context,
        coroutineScope: CoroutineScope,
    ): PreferenceHierarchy = preferenceHierarchy(context) { +NightDisplayTopIntroPreference() }

    override fun isAvailable(context: Context): Boolean =
        ColorDisplayManager.isNightDisplayAvailable(context)

    override fun getMetricsCategory(): Int = SettingsEnums.NIGHT_DISPLAY_SETTINGS

    override val sensitivityLevel: @SensitivityLevel Int
        get() = SensitivityLevel.NO_SENSITIVITY

    companion object {
        const val KEY = "night_display"
    }
}

internal class NightDisplayTopIntroPreference :
    PreferenceMetadata, PreferenceBinding, PreferenceAvailabilityProvider {

    override val key: String
        get() = "night_display_top_intro"

    override val title: Int
        get() = R.string.night_display_text

    override val indexable
        get() = false

    override fun createWidget(context: Context) = TopIntroPreference(context)

    override fun isAvailable(context: Context): Boolean =
        ColorDisplayManager.isNightDisplayAvailable(context)
}
// LINT.ThenChange(NightDisplaySettings.java)