Converted BackupActivity to fragment

app/src/main/java/code/name/monkey/retromusic/fragments/backup/BackupFragment.kt

@@ -0,0 +1,80 @@
+package code.name.monkey.retromusic.fragments.backup
+
+import android.os.Bundle
+import android.view.View
+import androidx.core.view.isVisible
+import androidx.fragment.app.Fragment
+import androidx.fragment.app.viewModels
+import androidx.lifecycle.lifecycleScope
+import androidx.recyclerview.widget.LinearLayoutManager
+import androidx.recyclerview.widget.RecyclerView
+import code.name.monkey.retromusic.R
+import code.name.monkey.retromusic.adapter.backup.BackupAdapter
+import code.name.monkey.retromusic.databinding.FragmentBackupBinding
+import code.name.monkey.retromusic.helper.BackupHelper
+import kotlinx.coroutines.launch
+import java.io.File
+
+class BackupFragment : Fragment(R.layout.fragment_backup), BackupAdapter.BackupClickedListener {
+
+    private val backupViewModel by viewModels<BackupViewModel>()
+    private var backupAdapter: BackupAdapter? = null
+
+    private var _binding: FragmentBackupBinding? = null
+    private val binding get() = _binding!!
+
+    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
+        super.onViewCreated(view, savedInstanceState)
+        _binding = FragmentBackupBinding.bind(view)
+        initAdapter()
+        setupRecyclerview()
+        backupViewModel.backupsLiveData.observe(this) {
+            if (it.isNotEmpty())
+                backupAdapter?.swapDataset(it)
+            else
+                backupAdapter?.swapDataset(listOf())
+        }
+        backupViewModel.loadBackups()
+        setupButtons()
+    }
+
+    private fun setupButtons() {
+        binding.createBackup.setOnClickListener {
+            lifecycleScope.launch {
+                BackupHelper.createBackup(requireContext())
+                backupViewModel.loadBackups()
+            }
+        }
+    }
+
+    private fun initAdapter() {
+        backupAdapter = BackupAdapter(requireContext(), ArrayList(), this)
+        backupAdapter?.registerAdapterDataObserver(object : RecyclerView.AdapterDataObserver() {
+            override fun onChanged() {
+                super.onChanged()
+                checkIsEmpty()
+            }
+        })
+    }
+
+    private fun checkIsEmpty() {
+        binding.emptyText.setText(R.string.no_backups_found)
+        (backupAdapter!!.itemCount == 0).run {
+            binding.empty.isVisible = this
+            binding.backupTitle.isVisible = this
+        }
+    }
+
+    fun setupRecyclerview() {
+        binding.backupRecyclerview.apply {
+            layoutManager = LinearLayoutManager(context)
+            adapter = backupAdapter
+        }
+    }
+
+    override fun onBackupClicked(file: File) {
+        lifecycleScope.launch {
+            backupViewModel.restoreBackup(requireActivity(), file)
+        }
+    }
+}

app/src/main/java/code/name/monkey/retromusic/fragments/backup/BackupViewModel.kt

@@ -0,0 +1,41 @@
+package code.name.monkey.retromusic.fragments.backup
+
+import android.app.Activity
+import android.content.Intent
+import androidx.lifecycle.MutableLiveData
+import androidx.lifecycle.ViewModel
+import androidx.lifecycle.viewModelScope
+import code.name.monkey.retromusic.helper.BackupHelper
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.launch
+import kotlinx.coroutines.withContext
+import java.io.File
+import kotlin.system.exitProcess
+
+
+class BackupViewModel : ViewModel() {
+    private val backupsMutableLiveData = MutableLiveData<List<File>>()
+    val backupsLiveData = backupsMutableLiveData
+
+    fun loadBackups() {
+        viewModelScope.launch {
+            File(BackupHelper.backupRootPath).listFiles { _, name ->
+                return@listFiles name.endsWith(BackupHelper.BACKUP_EXTENSION)
+            }?.toList()?.let {
+                backupsMutableLiveData.value = it
+            }
+        }
+    }
+
+    suspend fun restoreBackup(activity: Activity, file: File) {
+        BackupHelper.restoreBackup(activity, file)
+        withContext(Dispatchers.Main) {
+            val intent = Intent(
+                activity,
+                activity::class.java
+            )
+            activity.startActivity(intent)
+            exitProcess(0)
+        }
+    }
+}

app/src/main/java/code/name/monkey/retromusic/fragments/backup/RestoreActivity.kt

@@ -0,0 +1,12 @@
+package code.name.monkey.retromusic.fragments.backup
+
+import android.os.Bundle
+import androidx.appcompat.app.AppCompatActivity
+import code.name.monkey.retromusic.R
+
+class RestoreActivity : AppCompatActivity() {
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        setContentView(R.layout.activity_restore)
+    }
+}

app/src/main/java/code/name/monkey/retromusic/fragments/settings/MainSettingsFragment.kt

@@ -45,7 +45,7 @@ class MainSettingsFragment : Fragment(), View.OnClickListener {
             R.id.otherSettings -> findNavController().navigate(R.id.action_mainSettingsFragment_to_otherSettingsFragment)
             R.id.aboutSettings -> findNavController().navigate(R.id.action_mainSettingsFragment_to_aboutActivity)
             R.id.nowPlayingSettings -> findNavController().navigate(R.id.action_mainSettingsFragment_to_nowPlayingSettingsFragment)
-            R.id.backup_restore_settings -> NavigationUtil.gotoBackup(requireActivity())
+            R.id.backup_restore_settings -> findNavController().navigate(R.id.action_mainSettingsFragment_to_backupFragment)
         }
     }