Add UUID to habits

android/uhabits-android/src/main/java/org/isoron/uhabits/activities/habits/list/ListHabitsScreen.kt

@@ -97,9 +97,9 @@ class ListHabitsScreen
         commandRunner.removeListener(this)
     }
 
-    override fun onCommandExecuted(command: Command, refreshKey: Long?) {
-        if (command.isRemote) return
-        showMessage(getExecuteString(command))
+    override fun onCommandExecuted(command: Command?, refreshKey: Long?) {
+        if (command != null)
+            showMessage(getExecuteString(command))
     }
 
     override fun onResult(requestCode: Int, resultCode: Int, data: Intent?) {

android/uhabits-android/src/main/java/org/isoron/uhabits/tasks/ImportDataTask.java

@@ -19,6 +19,8 @@
 
 package org.isoron.uhabits.tasks;
 
+import android.util.*;
+
 import androidx.annotation.NonNull;
 
 import com.google.auto.factory.*;
@@ -83,7 +85,7 @@ public class ImportDataTask implements Task
         catch (Exception e)
         {
             result = FAILED;
-            e.printStackTrace();
+            Log.e("ImportDataTask", "Import failed", e);
         }
 
         modelFactory.db.endTransaction();

android/uhabits-android/src/main/java/org/isoron/uhabits/widgets/WidgetUpdater.kt

@@ -45,7 +45,7 @@ class WidgetUpdater
 
     private var lastUpdated = 0L
 
-    override fun onCommandExecuted(command: Command, refreshKey: Long?) {
+    override fun onCommandExecuted(command: Command?, refreshKey: Long?) {
         updateWidgets(refreshKey)
     }
 

android/uhabits-core/src/main/java/org/isoron/uhabits/core/Config.java

@@ -22,5 +22,5 @@ package org.isoron.uhabits.core;
 public class Config
 {
     public static final String DATABASE_FILENAME = "uhabits.db";
-    public static int DATABASE_VERSION = 23;
+    public static int DATABASE_VERSION = 24;
 }

android/uhabits-core/src/main/java/org/isoron/uhabits/core/commands/Command.java

@@ -38,18 +38,14 @@ public abstract class Command
 {
     private String id;
 
-    private boolean isRemote;
-
     public Command()
     {
         id = StringUtils.getRandomId();
-        isRemote = false;
     }
 
     public Command(String id)
     {
         this.id = id;
-        isRemote = false;
     }
 
     public abstract void execute();
@@ -64,16 +60,6 @@ public abstract class Command
         this.id = id;
     }
 
-    public boolean isRemote()
-    {
-        return isRemote;
-    }
-
-    public void setRemote(boolean remote)
-    {
-        isRemote = remote;
-    }
-
     @NonNull
     public String toJson()
     {

android/uhabits-core/src/main/java/org/isoron/uhabits/core/commands/CommandRunner.java

@@ -66,12 +66,17 @@ public class CommandRunner
             @Override
             public void onPostExecute()
             {
-                for (Listener l : listeners)
-                    l.onCommandExecuted(command, refreshKey);
+                notifyListeners(command, refreshKey);
             }
         });
     }
 
+    public void notifyListeners(Command command, Long refreshKey)
+    {
+        for (Listener l : listeners)
+            l.onCommandExecuted(command, refreshKey);
+    }
+
     public void removeListener(Listener l)
     {
         listeners.remove(l);
@@ -83,7 +88,7 @@ public class CommandRunner
      */
     public interface Listener
     {
-        void onCommandExecuted(@NonNull Command command,
+        void onCommandExecuted(@Nullable Command command,
                                @Nullable Long refreshKey);
     }
 }

android/uhabits-core/src/main/java/org/isoron/uhabits/core/io/LoopDBImporter.java

@@ -101,35 +101,42 @@ public class LoopDBImporter extends AbstractImporter
         habitsRepository = new Repository<>(HabitRecord.class, db);
         repsRepository = new Repository<>(RepetitionRecord.class, db);
 
-        for (HabitRecord habitRecord : habitsRepository.findAll(
-                "order by position"))
+        List<HabitRecord> records = habitsRepository.findAll("order by position");
+        for (HabitRecord habitRecord : records)
         {
-            Habit habit = habitList.getById(habitRecord.id);
+            List<RepetitionRecord> reps =
+                    repsRepository.findAll("where habit = ?",
+                            habitRecord.id.toString());
+
+            Habit habit = habitList.getByUUID(habitRecord.uuid);
             if (habit == null)
             {
                 habit = modelFactory.buildHabit();
+                habitRecord.id = null;
                 habitRecord.copyTo(habit);
-                runner.execute(new CreateHabitCommand(modelFactory, habitList, habit), null);
+                new CreateHabitCommand(modelFactory, habitList, habit).execute();
             }
             else
             {
                 Habit modified = modelFactory.buildHabit();
+                habitRecord.id = habit.id;
                 habitRecord.copyTo(modified);
                 if (!modified.getData().equals(habit.getData()))
-                    runner.execute(new EditHabitCommand(modelFactory, habitList, habit, modified), null);
+                    new EditHabitCommand(modelFactory, habitList, habit, modified).execute();
             }
 
-            List<RepetitionRecord> reps =
-                    repsRepository.findAll("where habit = ?",
-                            habitRecord.id.toString());
+            // Reload saved version of the habit
+            habit = habitList.getByUUID(habitRecord.uuid);
 
             for (RepetitionRecord r : reps)
             {
                 Timestamp t = new Timestamp(r.timestamp);
                 Repetition rep = habit.getRepetitions().getByTimestamp(t);
                 if(rep == null || rep.getValue() != r.value)
-                    runner.execute(new CreateRepetitionCommand(habitList, habit, t, r.value), habit.id);
+                    new CreateRepetitionCommand(habitList, habit, t, r.value).execute();
             }
         }
+
+        runner.notifyListeners(null, null);
     }
 }

android/uhabits-core/src/main/java/org/isoron/uhabits/core/models/Habit.java

@@ -356,14 +356,27 @@ public class Habit
     }
 
     @NonNull
-    public String getQuestion() {
+    public String getQuestion()
+    {
         return data.question;
     }
 
-    public void setQuestion(@NonNull String question) {
+    public void setQuestion(@NonNull String question)
+    {
         data.question = question;
     }
 
+    @NonNull
+    public String getUUID()
+    {
+        return data.uuid;
+    }
+
+    public void setUUID(@NonNull String uuid)
+    {
+        data.uuid = uuid;
+    }
+
     public static final class HabitData
     {
         @NonNull
@@ -388,6 +401,8 @@ public class Habit
 
         public int type;
 
+        public String uuid;
+
         @NonNull
         public String unit;
 
@@ -409,6 +424,7 @@ public class Habit
             this.targetValue = 100;
             this.unit = "";
             this.position = 0;
+            this.uuid = UUID.randomUUID().toString().replace("-", "");
         }
 
         public HabitData(@NonNull HabitData model)
@@ -425,6 +441,7 @@ public class Habit
             this.unit = model.unit;
             this.reminder = model.reminder;
             this.position = model.position;
+            this.uuid = model.uuid;
         }
 
         @Override
@@ -443,6 +460,7 @@ public class Habit
                 .append("reminder", reminder)
                 .append("position", position)
                 .append("question", question)
+                .append("uuid", uuid)
                 .toString();
         }
 
@@ -468,6 +486,7 @@ public class Habit
                 .append(reminder, habitData.reminder)
                 .append(position, habitData.position)
                 .append(question, habitData.question)
+                .append(uuid, habitData.uuid)
                 .isEquals();
         }
 
@@ -487,6 +506,7 @@ public class Habit
                 .append(reminder)
                 .append(position)
                 .append(question)
+                .append(uuid)
                 .toHashCode();
         }
     }

android/uhabits-core/src/main/java/org/isoron/uhabits/core/models/HabitList.java

@@ -83,6 +83,15 @@ public abstract class HabitList implements Iterable<Habit>
     @Nullable
     public abstract Habit getById(long id);
 
+    /**
+     * Returns the habit with specified UUID.
+     *
+     * @param uuid the UUID of the habit
+     * @return the habit, or null if none exist
+     */
+    @Nullable
+    public abstract Habit getByUUID(String uuid);
+
     /**
      * Returns the habit that occupies a certain position.
      *

android/uhabits-core/src/main/java/org/isoron/uhabits/core/models/memory/MemoryHabitList.java

@@ -94,6 +94,13 @@ public class MemoryHabitList extends HabitList
         return null;
     }
 
+    @Override
+    public synchronized Habit getByUUID(String uuid)
+    {
+        for (Habit h : list) if (h.getUUID().equals(uuid)) return h;
+        return null;
+    }
+
     @NonNull
     @Override
     public synchronized Habit getByPosition(int position)

android/uhabits-core/src/main/java/org/isoron/uhabits/core/models/sqlite/SQLiteHabitList.java

@@ -98,6 +98,14 @@ public class SQLiteHabitList extends HabitList
         return list.getById(id);
     }
 
+    @Override
+    @Nullable
+    public synchronized Habit getByUUID(String uuid)
+    {
+        loadRecords();
+        return list.getByUUID(uuid);
+    }
+
     @Override
     @NonNull
     public synchronized Habit getByPosition(int position)

android/uhabits-core/src/main/java/org/isoron/uhabits/core/models/sqlite/records/HabitRecord.java

@@ -81,6 +81,9 @@ public class HabitRecord
     @Column
     public Long id;
 
+    @Column
+    public String uuid;
+
     public void copyFrom(Habit model)
     {
         this.id = model.getId();
@@ -95,6 +98,7 @@ public class HabitRecord
         this.unit = model.getUnit();
         this.position = model.getPosition();
         this.question = model.getQuestion();
+        this.uuid = model.getUUID();
 
         Frequency freq = model.getFrequency();
         this.freqNum = freq.getNumerator();
@@ -126,6 +130,7 @@ public class HabitRecord
         habit.setTargetValue(this.targetValue);
         habit.setUnit(this.unit);
         habit.setPosition(this.position);
+        habit.setUUID(this.uuid);
 
         if (reminderHour != null && reminderMin != null)
         {

android/uhabits-core/src/main/java/org/isoron/uhabits/core/reminders/ReminderScheduler.java

@@ -56,7 +56,7 @@ public class ReminderScheduler implements CommandRunner.Listener
     }
 
     @Override
-    public synchronized void onCommandExecuted(@NonNull Command command,
+    public synchronized void onCommandExecuted(@Nullable Command command,
                                                @Nullable Long refreshKey)
     {
         if (command instanceof CreateRepetitionCommand) return;

android/uhabits-core/src/main/java/org/isoron/uhabits/core/ui/NotificationTray.java

@@ -73,7 +73,7 @@ public class NotificationTray
     }
 
     @Override
-    public void onCommandExecuted(@NonNull Command command,
+    public void onCommandExecuted(@Nullable Command command,
                                   @Nullable Long refreshKey)
     {
         if (command instanceof CreateRepetitionCommand)

android/uhabits-core/src/main/resources/migrations/24.sql

@@ -0,0 +1,2 @@
+alter table habits add column uuid text;
+update habits set uuid = lower(hex(randomblob(16) || id));

android/uhabits-core/src/test/java/org/isoron/uhabits/core/BaseUnitTest.java

@@ -127,7 +127,7 @@ public class BaseUnitTest
                 DriverManager.getConnection("jdbc:sqlite::memory:"));
             db.execute("pragma user_version=8;");
             MigrationHelper helper = new MigrationHelper(db);
-            helper.migrateTo(23);
+            helper.migrateTo(Config.DATABASE_VERSION);
             return db;
         }
         catch (SQLException e)

android/uhabits-core/src/test/java/org/isoron/uhabits/core/io/ImportTest.java

@@ -132,7 +132,7 @@ public class ImportTest extends BaseUnitTest
         assertTrue(file.canRead());
 
         GenericImporter importer = new GenericImporter(habitList,
-            new LoopDBImporter(habitList, modelFactory, databaseOpener),
+            new LoopDBImporter(habitList, modelFactory, databaseOpener, commandRunner),
             new RewireDBImporter(habitList, modelFactory, databaseOpener),
             new TickmateDBImporter(habitList, modelFactory, databaseOpener),
             new HabitBullCSVImporter(habitList, modelFactory));

android/uhabits-core/src/test/java/org/isoron/uhabits/core/models/HabitTest.java

@@ -148,6 +148,7 @@ public class HabitTest extends BaseUnitTest
     public void testToString() throws Exception
     {
         Habit h = modelFactory.buildHabit();
+        h.setUUID("nnnn");
         h.setReminder(new Reminder(22, 30, WeekdayList.EVERY_DAY));
         String expected = "{id: <null>, data: {name: , description: ," +
                           " frequency: {numerator: 3, denominator: 7}," +
@@ -155,7 +156,7 @@ public class HabitTest extends BaseUnitTest
                           " targetValue: 100.0, type: 0, unit: ," +
                           " reminder: {hour: 22, minute: 30," +
                           " days: {weekdays: [true,true,true,true,true,true,true]}}," +
-                          " position: 0, question: }}";
+                          " position: 0, question: , uuid: nnnn}}";
 
         assertThat(h.toString(), equalTo(expected));
     }