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path: root/app/src/main/java/foundation/e/advancedprivacy/common/WarningDialog.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.common

import android.app.Activity
import android.content.Context
import android.content.Intent
import android.graphics.drawable.ColorDrawable
import android.os.Bundle
import android.view.View
import android.widget.CheckBox
import androidx.activity.result.contract.ActivityResultContracts
import androidx.appcompat.app.AlertDialog
import androidx.appcompat.app.AppCompatActivity
import foundation.e.advancedprivacy.R
import foundation.e.advancedprivacy.domain.entities.ShowFeaturesWarning
import foundation.e.advancedprivacy.domain.usecases.IpScramblingStateUseCase
import foundation.e.advancedprivacy.domain.usecases.ShowFeaturesWarningUseCase
import foundation.e.advancedprivacy.main.MainActivity
import kotlinx.coroutines.CoroutineScope
import kotlinx.coroutines.flow.launchIn
import kotlinx.coroutines.flow.map
import org.koin.java.KoinJavaComponent.get
import timber.log.Timber

class WarningDialog : AppCompatActivity() {
    companion object {
        private const val PARAM_FEATURE = "feature"

        fun startListening(
            showFeaturesWarningUseCase: ShowFeaturesWarningUseCase,
            appScope: CoroutineScope,
            appContext: Context
        ) {
            showFeaturesWarningUseCase.showWarning().map { feature ->
                appContext.startActivity(
                    createIntent(context = appContext, feature = feature)
                )
            }.launchIn(appScope)
        }

        private fun createIntent(
            context: Context,
            feature: ShowFeaturesWarning,
        ): Intent {
            val intent = Intent(context, WarningDialog::class.java)
            intent.putExtra(PARAM_FEATURE, feature)
            intent.flags = Intent.FLAG_ACTIVITY_NEW_TASK
            return intent
        }
    }

    private var isWaitingForResult = false

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        window.setBackgroundDrawable(ColorDrawable(0))

        val feature = try {
            intent.getParcelableExtra<ShowFeaturesWarning>(PARAM_FEATURE)!!
        } catch (e: Exception) {
            Timber.e("Missing mandatory activity parameter", e)
            finish()
            return
        }
        showWarningDialog(feature)
    }

    private fun showWarningDialog(feature: ShowFeaturesWarning) {
        val builder = AlertDialog.Builder(this)
        builder.setOnDismissListener { if (!isWaitingForResult) finish() }

        val content: View = layoutInflater.inflate(R.layout.alertdialog_do_not_show_again, null)
        val checkbox = content.findViewById<CheckBox>(R.id.checkbox)
        builder.setView(content)

        builder.setMessage(
            when (feature) {
                ShowFeaturesWarning.TrackersControl -> R.string.warningdialog_trackers_message
                ShowFeaturesWarning.FakeLocation -> R.string.warningdialog_location_message
                is ShowFeaturesWarning.IpScrambling -> R.string.warningdialog_ipscrambling_message
            }
        )

        builder.setTitle(
            when (feature) {
                ShowFeaturesWarning.TrackersControl -> R.string.warningdialog_trackers_title
                ShowFeaturesWarning.FakeLocation -> R.string.warningdialog_location_title
                is ShowFeaturesWarning.IpScrambling -> R.string.warningdialog_ipscrambling_title
            }
        )

        builder.setPositiveButton(
            when (feature) {
                is ShowFeaturesWarning.IpScrambling -> R.string.warningdialog_ipscrambling_cta
                else -> R.string.ok
            }
        ) { _, _ ->
            if (checkbox.isChecked()) {
                get<ShowFeaturesWarningUseCase>(ShowFeaturesWarningUseCase::class.java)
                    .doNotShowAgain(feature)
            }

            val vpnDisclaimerIntent = (feature as? ShowFeaturesWarning.IpScrambling)
                ?.startVpnDisclaimer

            if (vpnDisclaimerIntent != null) {
                isWaitingForResult = true
                launchAndroidVpnDisclaimer.launch(vpnDisclaimerIntent)
            } else finish()
        }

        if (feature == ShowFeaturesWarning.TrackersControl) {
            builder.setNeutralButton(R.string.warningdialog_trackers_secondary_cta) { _, _ ->
                MainActivity.deepLinkBuilder(this)
                    .setDestination(R.id.trackersFragment)
                    .createPendingIntent().send()

                finish()
            }
        }

        builder.show()
    }

    private val launchAndroidVpnDisclaimer = registerForActivityResult(ActivityResultContracts.StartActivityForResult()) { result ->
        val ipScramblingStateUseCase = get<IpScramblingStateUseCase>(IpScramblingStateUseCase::class.java)
        if (result.resultCode == Activity.RESULT_OK) {
            ipScramblingStateUseCase.startIpScrambling()
        } else {
            ipScramblingStateUseCase.toggle(false)
        }
        finish()
    }
}