session-android/src/org/thoughtcrime/securesms/loki/activities/PNModeActivity.kt

package org.thoughtcrime.securesms.loki.activities

import android.app.AlertDialog
import android.content.Intent
import android.graphics.drawable.TransitionDrawable
import android.net.Uri
import android.os.Bundle
import android.support.annotation.DrawableRes
import android.view.Menu
import android.view.MenuItem
import android.view.View
import android.widget.LinearLayout
import android.widget.Toast
import kotlinx.android.synthetic.main.activity_display_name.registerButton
import kotlinx.android.synthetic.main.activity_pn_mode.*
import network.loki.messenger.R
import org.thoughtcrime.securesms.ApplicationContext
import org.thoughtcrime.securesms.BaseActionBarActivity
import org.thoughtcrime.securesms.loki.utilities.setUpActionBarSessionLogo
import org.thoughtcrime.securesms.loki.utilities.show
import org.thoughtcrime.securesms.util.TextSecurePreferences

class PNModeActivity : BaseActionBarActivity() {
    private var selectedOptionView: LinearLayout? = null

    // region Lifecycle
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setUpActionBarSessionLogo()
        setContentView(R.layout.activity_pn_mode)
        fcmOptionView.setOnClickListener { toggleFCM() }
        backgroundPollingOptionView.setOnClickListener { toggleBackgroundPolling() }
        registerButton.setOnClickListener { register() }
    }

    override fun onCreateOptionsMenu(menu: Menu?): Boolean {
        menuInflater.inflate(R.menu.menu_pn_mode, menu)
        return true
    }
    // endregion

    // region Animation
    private fun performTransition(@DrawableRes transitionID: Int, subject: View) {
        val drawable = resources.getDrawable(transitionID, theme) as TransitionDrawable
        subject.background = drawable
        drawable.startTransition(250)
    }
    // endregion

    // region Interaction
    override fun onOptionsItemSelected(item: MenuItem): Boolean {
        val id = item.itemId
        when(id) {
            R.id.learnMoreButton -> learnMore()
            else -> { /* Do nothing */ }
        }
        return super.onOptionsItemSelected(item)
    }

    private fun learnMore() {
        try {
            val url = "https://getsession.org/faq/#privacy"
            val intent = Intent(Intent.ACTION_VIEW, Uri.parse(url))
            startActivity(intent)
        } catch (e: Exception) {
            Toast.makeText(this, R.string.invalid_url, Toast.LENGTH_SHORT).show()
        }
    }

    private fun toggleFCM() {
        when (selectedOptionView) {
            null -> {
                performTransition(R.drawable.pn_option_background_select_transition, fcmOptionView)
                selectedOptionView = fcmOptionView
            }
            fcmOptionView -> {
                performTransition(R.drawable.pn_option_background_deselect_transition, fcmOptionView)
                selectedOptionView = null
            }
            backgroundPollingOptionView -> {
                performTransition(R.drawable.pn_option_background_select_transition, fcmOptionView)
                performTransition(R.drawable.pn_option_background_deselect_transition, backgroundPollingOptionView)
                selectedOptionView = fcmOptionView
            }
        }
    }

    private fun toggleBackgroundPolling() {
        when (selectedOptionView) {
            null -> {
                performTransition(R.drawable.pn_option_background_select_transition, backgroundPollingOptionView)
                selectedOptionView = backgroundPollingOptionView
            }
            backgroundPollingOptionView -> {
                performTransition(R.drawable.pn_option_background_deselect_transition, backgroundPollingOptionView)
                selectedOptionView = null
            }
            fcmOptionView -> {
                performTransition(R.drawable.pn_option_background_select_transition, backgroundPollingOptionView)
                performTransition(R.drawable.pn_option_background_deselect_transition, fcmOptionView)
                selectedOptionView = backgroundPollingOptionView
            }
        }
    }

    private fun register() {
        if (selectedOptionView == null) {
            val dialog = AlertDialog.Builder(this)
            dialog.setTitle(R.string.activity_pn_mode_no_option_picked_dialog_title)
            dialog.setPositiveButton(R.string.ok) { _, _ -> }
            dialog.create().show()
            return
        }
        val displayName = TextSecurePreferences.getProfileName(this)
        TextSecurePreferences.setHasSeenWelcomeScreen(this, true)
        TextSecurePreferences.setPromptedPushRegistration(this, true)
        TextSecurePreferences.setIsUsingFCM(this, (selectedOptionView == fcmOptionView))
        TextSecurePreferences.setHasSeenMultiDeviceRemovalSheet(this)
        val application = ApplicationContext.getInstance(this)
        application.setUpStorageAPIIfNeeded()
        application.setUpP2PAPIIfNeeded()
        application.registerForFCMIfNeeded(true)
        val intent = Intent(this, HomeActivity::class.java)
        intent.flags = Intent.FLAG_ACTIVITY_NEW_TASK or Intent.FLAG_ACTIVITY_CLEAR_TASK
        show(intent)
    }
    // endregion
}