app/src/main/java/foundation/e/advancedprivacy/domain/usecases/ShowFeaturesWarningUseCase.kt


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/*
 * Copyright (C) 2023 MURENA SAS
 * Copyright (C) 2022 E FOUNDATION
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */

package foundation.e.advancedprivacy.domain.usecases

import foundation.e.advancedprivacy.domain.entities.MainFeatures
import foundation.e.advancedprivacy.domain.entities.MainFeatures.FakeLocation
import foundation.e.advancedprivacy.domain.entities.MainFeatures.IpScrambling
import foundation.e.advancedprivacy.domain.entities.MainFeatures.TrackersControl
import foundation.e.advancedprivacy.domain.repositories.LocalStateRepository
import kotlinx.coroutines.flow.Flow
import kotlinx.coroutines.flow.drop
import kotlinx.coroutines.flow.dropWhile
import kotlinx.coroutines.flow.filter
import kotlinx.coroutines.flow.map
import kotlinx.coroutines.flow.merge

class ShowFeaturesWarningUseCase(
    private val localStateRepository: LocalStateRepository
) {

    fun showWarning(): Flow<MainFeatures> {
        return merge(
            localStateRepository.fakeLocationEnabled.drop(1).dropWhile { !it }
                .filter { it && !localStateRepository.hideWarningLocation }
                .map { FakeLocation },
            localStateRepository.startVpnDisclaimer.filter {
                (it is IpScrambling && !localStateRepository.hideWarningIpScrambling) ||
                    (it is TrackersControl && !localStateRepository.hideWarningTrackers)
            }
        )
    }

    fun doNotShowAgain(feature: MainFeatures) {
        when (feature) {
            is TrackersControl -> localStateRepository.hideWarningTrackers = true
            is FakeLocation -> localStateRepository.hideWarningLocation = true
            is IpScrambling -> localStateRepository.hideWarningIpScrambling = true
        }
    }
}