Add "delete account" button in settings

app/src/main/java/org/bspb/smartbirds/pro/backend/SmartBirdsApi.java

@@ -2,6 +2,7 @@
 
 import com.google.gson.JsonObject;
 
+import org.bspb.smartbirds.pro.backend.dto.BaseResponse;
 import org.bspb.smartbirds.pro.backend.dto.CheckSessionRequest;
 import org.bspb.smartbirds.pro.backend.dto.DownloadsResponse;
 import org.bspb.smartbirds.pro.backend.dto.FileId;
@@ -17,11 +18,13 @@
 import okhttp3.MultipartBody;
 import retrofit2.Call;
 import retrofit2.http.Body;
+import retrofit2.http.DELETE;
 import retrofit2.http.GET;
 import retrofit2.http.Multipart;
 import retrofit2.http.POST;
 import retrofit2.http.PUT;
 import retrofit2.http.Part;
+import retrofit2.http.Path;
 import retrofit2.http.Query;
 import retrofit2.http.Url;
 
@@ -96,4 +99,7 @@ public interface SmartBirdsApi {
 
     @POST("bats")
     Call<UploadFormResponse> createBat(@Body JsonObject request);
+
+    @DELETE("user/{id}")
+    Call<BaseResponse> deleteUser(@Path("id") long id);
 }

app/src/main/java/org/bspb/smartbirds/pro/backend/dto/BaseResponse.java

@@ -0,0 +1,24 @@
+package org.bspb.smartbirds.pro.backend.dto;
+
+import com.google.gson.annotations.Expose;
+import com.google.gson.annotations.SerializedName;
+
+public class BaseResponse {
+
+    @Expose
+    @SerializedName("error")
+    public String error;
+
+    @Expose
+    @SerializedName("success")
+    public boolean success;
+
+    @Override
+    public String toString() {
+        final StringBuffer sb = new StringBuffer("BaseResponse{");
+        sb.append("error='").append(error).append('\'');
+        sb.append(", success=").append(success);
+        sb.append('}');
+        return sb.toString();
+    }
+}

app/src/main/kotlin/org/bspb/smartbirds/pro/ui/fragment/SettingsFragment.kt

@@ -1,7 +1,9 @@
 package org.bspb.smartbirds.pro.ui.fragment
 
+import android.content.Intent
 import android.os.Bundle
 import androidx.activity.result.contract.ActivityResultContracts
+import androidx.appcompat.app.AlertDialog
 import androidx.preference.ListPreference
 import androidx.preference.MultiSelectListPreference
 import androidx.preference.Preference
@@ -10,13 +12,21 @@ import androidx.preference.PreferenceFragmentCompat
 import androidx.preference.SwitchPreferenceCompat
 import com.google.gson.reflect.TypeToken
 import org.bspb.smartbirds.pro.R
+import org.bspb.smartbirds.pro.backend.Backend
+import org.bspb.smartbirds.pro.backend.dto.BaseResponse
 import org.bspb.smartbirds.pro.backend.dto.MapLayerItem
 import org.bspb.smartbirds.pro.prefs.SmartBirdsPrefs
+import org.bspb.smartbirds.pro.prefs.UserPrefs
 import org.bspb.smartbirds.pro.tools.DBExporter
 import org.bspb.smartbirds.pro.tools.SBGsonParser
+import org.bspb.smartbirds.pro.ui.MainActivity
 import org.bspb.smartbirds.pro.ui.map.MapProvider
 import org.bspb.smartbirds.pro.utils.KmlUtils
+import org.bspb.smartbirds.pro.utils.debugLog
 import org.bspb.smartbirds.pro.utils.showAlert
+import retrofit2.Call
+import retrofit2.Callback
+import retrofit2.Response
 
 
 class SettingsFragment : PreferenceFragmentCompat() {
@@ -26,7 +36,12 @@ class SettingsFragment : PreferenceFragmentCompat() {
     private var exportPreference: Preference? = null
     private var showKmlPreference: SwitchPreferenceCompat? = null
     private var importedKmlPreference: Preference? = null
+    private var deleteAccountPreference: Preference? = null
+
     private var prefs: SmartBirdsPrefs? = null
+    private var userPrefs: UserPrefs? = null
+
+    private val backend: Backend by lazy { Backend.getInstance() }
 
     private val pickKml = registerForActivityResult(ActivityResultContracts.GetContent()) {
         it ?: return@registerForActivityResult
@@ -41,6 +56,7 @@ class SettingsFragment : PreferenceFragmentCompat() {
     override fun onCreatePreferences(savedInstanceState: Bundle?, rootKey: String?) {
         setPreferencesFromResource(R.xml.settings, rootKey)
         prefs = SmartBirdsPrefs(requireContext())
+        userPrefs = UserPrefs(requireContext())
         initPreferences()
         updateMapType(MapProvider.ProviderType.valueOf(providerPreference?.value as String))
     }
@@ -50,6 +66,7 @@ class SettingsFragment : PreferenceFragmentCompat() {
         mapTypePreference = findPreference("mapType")
         enabledFormsPreference = findPreference("formsEnabled")
         exportPreference = findPreference("exportDB")
+        deleteAccountPreference = findPreference("deleteAccount")
 
         providerPreference?.onPreferenceChangeListener =
             Preference.OnPreferenceChangeListener() { _: Preference, newValue: Any ->
@@ -93,6 +110,12 @@ class SettingsFragment : PreferenceFragmentCompat() {
             return@setOnPreferenceClickListener true
         }
 
+        deleteAccountPreference?.onPreferenceClickListener =
+            Preference.OnPreferenceClickListener { _: Preference ->
+                showDeleteAccountConfirmation()
+                return@OnPreferenceClickListener true
+            }
+
         updateImportedKmlPreference()
         initMapLayersSettings()
     }
@@ -152,4 +175,53 @@ class SettingsFragment : PreferenceFragmentCompat() {
             mapTypePreference?.isEnabled = true
         }
     }
+
+    private fun showDeleteAccountConfirmation() {
+        debugLog("Show delete account confirmation")
+        AlertDialog.Builder(requireContext())
+            .setView(R.layout.dialog_delete_account)
+            .setPositiveButton(R.string.dialog_delete_account_btn_yes) { _, _ ->
+                deleteAccount()
+            }
+            .setNegativeButton(android.R.string.cancel) { _, _ -> }
+            .show()
+    }
+
+    private fun deleteAccount() {
+        userPrefs?.getUserId() ?: return
+
+        val loadingDialog = LoadingDialog.newInstance(getString(R.string.deleting_account_progress))
+        loadingDialog.show(parentFragmentManager, "deleting")
+
+        backend.api().deleteUser(userPrefs!!.getUserId().toLong())
+            .enqueue(object : Callback<BaseResponse> {
+                override fun onResponse(
+                    call: Call<BaseResponse>,
+                    response: Response<BaseResponse>,
+                ) {
+                    loadingDialog.dismiss()
+                    if (response.isSuccessful && response.body()?.success == true) {
+                        userPrefs?.clear()
+                        startActivity(Intent(context, MainActivity::class.java))
+                    } else {
+                        showDeleteAccountError()
+                    }
+
+                }
+
+                override fun onFailure(call: Call<BaseResponse>, error: Throwable) {
+                    loadingDialog.dismiss()
+                    debugLog("Delete account failed ${error.message}")
+                }
+            })
+    }
+
+    private fun showDeleteAccountError() {
+        context?.showAlert(
+            R.string.delete_account_dialog_title,
+            R.string.delete_account_dialog_error_message,
+            null,
+            null
+        )
+    }
 }

app/src/main/res/layout/dialog_delete_account.xml

@@ -0,0 +1,37 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:orientation="vertical"
+    android:layout_width="match_parent"
+    android:padding="?dialogPreferredPadding"
+    android:layout_height="match_parent">
+
+    <TextView
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:textStyle="bold"
+        android:text="@string/delete_account_dialog_title"
+        android:textAppearance="@android:style/TextAppearance.DialogWindowTitle" />
+
+    <LinearLayout
+        android:id="@+id/confirmation_message_container"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:orientation="vertical">
+
+        <TextView
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:textColor="@android:color/black"
+            android:text="@string/delete_account_dialog_confirmation_message"
+            android:textAppearance="@android:style/TextAppearance.DeviceDefault.Medium" />
+
+        <TextView
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:textColor="@android:color/holo_red_dark"
+            android:paddingTop="10dp"
+            android:text="@string/delete_account_dialog_confirmation_warning_message"
+            android:textAppearance="@android:style/TextAppearance.DeviceDefault.Small" />
+    </LinearLayout>
+
+</LinearLayout>

app/src/main/res/values-bg/strings.xml

@@ -343,6 +343,8 @@
     <string name="settings_category_advanced">"Допълнителни"</string>
     <string name="settings_export_db">"Експорт на Базата данни"</string>
     <string name="settings_export_db_summary">"Експортиране на Базата данни в Downloads."</string>
+    <string name="settings_delete_account">"Изтриване на профил"</string>
+    <string name="settings_delete_account_summary">"Тази операция ще изтрие потребителският ви профил и всички данни свързани с него. Операцията е необратима!"</string>
     <string name="settings_enabled_forms_alert_title">"Внимание"</string>
     <string name="settings_enabled_forms_alert_message">"Трябва да изберете поне една активна форма за наблюдение."</string>
     <string name="export_db_dialog_title_success">"Успех"</string>

app/src/main/res/values/strings.xml

@@ -344,6 +344,8 @@ Do you really want to cancel the monitoring?"</string>
     <string name="settings_category_advanced">"Advanced"</string>
     <string name="settings_export_db">"Export DB"</string>
     <string name="settings_export_db_summary">"Export the DB in Downloads."</string>
+    <string name="settings_delete_account">"Delete account"</string>
+    <string name="settings_delete_account_summary">"This operation will delete your account and all related data. It cannot be undone! "</string>
     <string name="settings_enabled_forms_alert_title">"Warning"</string>
     <string name="settings_enabled_forms_alert_message">"You have to select at least one active monitoring form."</string>
     <string name="export_db_dialog_title_success">"Success"</string>
@@ -503,4 +505,10 @@ Do you really want to cancel the monitoring?"</string>
     <string name="settings_show_current_location_circle">"Current location zone"</string>
     <string name="notifications_permission_rationale">"Notification permission is required for starting a monitoring"</string>
     <string name="monitoring_fish_total_length">"Total length (TL) class, cm"</string>
+    <string name="delete_account_dialog_title">Delete account</string>
+    <string name="delete_account_dialog_confirmation_message">Are you sure you want to delete your account?</string>
+    <string name="delete_account_dialog_confirmation_warning_message">Warning: This action cannot be undone.</string>
+    <string name="delete_account_dialog_error_message">Failed to delete account</string>
+    <string name="deleting_account_progress">Deleting account...</string>
+    <string name="dialog_delete_account_btn_yes">Yes, delete account.</string>
 </resources>

app/src/main/res/xml/settings.xml

@@ -148,6 +148,12 @@
             app:key="exportDB"
             app:summary="@string/settings_export_db_summary"
             app:title="@string/settings_export_db" />
+
+        <Preference
+            app:iconSpaceReserved="false"
+            app:key="deleteAccount"
+            app:summary="@string/settings_delete_account_summary"
+            app:title="@string/settings_delete_account" />
     </PreferenceCategory>
 
 </PreferenceScreen>