MainActivity.kt

/*
 * Copyright by the original author or authors.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */

package de.ccc.events.badge.card10

import android.Manifest
import android.app.Activity
import android.bluetooth.BluetoothAdapter
import android.content.Intent
import android.content.pm.PackageManager
import android.os.Bundle
import androidx.appcompat.app.AppCompatActivity
import androidx.core.app.ActivityCompat
import androidx.core.content.ContextCompat
import androidx.work.ExistingPeriodicWorkPolicy
import androidx.work.PeriodicWorkRequestBuilder
import androidx.work.WorkManager
import de.ccc.events.badge.card10.background.SetClockJob
import de.ccc.events.badge.card10.installer.InstallerFragment
import de.ccc.events.badge.card10.main.MainFragment
import java.util.concurrent.TimeUnit

private const val REQUEST_CODE_ENABLE_BLUETOOTH = 1
private const val REQUEST_CODE_PERMISSIONS = 2

private const val WORK_NAME = "update_clock"

class MainActivity : AppCompatActivity() {

    val bluetoothAdapter = BluetoothAdapter.getDefaultAdapter()

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)
        maybePermissionGranted()
    }

    override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) {
        if (requestCode == REQUEST_CODE_ENABLE_BLUETOOTH) {
            if (resultCode == Activity.RESULT_OK)
                maybePermissionGranted()
            else
                finish()
        } else {
            super.onActivityResult(requestCode, resultCode, data)
        }
    }

    override fun onRequestPermissionsResult(requestCode: Int, permissions: Array<out String>, grantResults: IntArray) {
        if (requestCode == REQUEST_CODE_PERMISSIONS) {
            if (!grantResults.isEmpty() && grantResults[0] == PackageManager.PERMISSION_GRANTED)
                maybePermissionGranted()
            else
                finish()
        } else {
            super.onRequestPermissionsResult(requestCode, permissions, grantResults)
        }
    }

    fun maybePermissionGranted() {
        if (!bluetoothAdapter.isEnabled) {
            startActivityForResult(Intent(BluetoothAdapter.ACTION_REQUEST_ENABLE), REQUEST_CODE_ENABLE_BLUETOOTH)
        } else if (ContextCompat.checkSelfPermission(
                this,
                Manifest.permission.ACCESS_COARSE_LOCATION
            ) != PackageManager.PERMISSION_GRANTED
        ) {
            ActivityCompat.requestPermissions(
                this,
                arrayOf(Manifest.permission.ACCESS_COARSE_LOCATION),
                REQUEST_CODE_PERMISSIONS
            )
        } else {
            permissionGranted()
        }
    }

    fun permissionGranted() {
        val fragment = when {
            intent.action == "application/x.card10.app" -> InstallerFragment()
            else -> MainFragment()
        }

        supportFragmentManager.beginTransaction()
            .replace(R.id.fragment_container, fragment)
            .commit()

        val workManager = WorkManager.getInstance(this)
        if (!bluetoothAdapter.bondedDevices.isEmpty()
        ) {
            val updateClockRequest =
                PeriodicWorkRequestBuilder<SetClockJob>(1, TimeUnit.MINUTES)
                    .build()
            workManager
                .enqueueUniquePeriodicWork(WORK_NAME, ExistingPeriodicWorkPolicy.REPLACE, updateClockRequest)
        } else {
            workManager.cancelUniqueWork(WORK_NAME)
        }
    }
}