Fix database issues

uhabits-core/src/jvmMain/java/org/isoron/uhabits/core/models/sqlite/SQLiteEntryList.kt

@@ -81,12 +81,4 @@ class SQLiteEntryList(database: Database) : EntryList() {
     override fun recomputeFrom(originalEntries: EntryList, frequency: Frequency, isNumerical: Boolean) {
         throw UnsupportedOperationException()
     }
-
-    override fun clear() {
-        super.clear()
-        repository.execSQL(
-            "delete from repetitions where habit = ?",
-            habitId.toString()
-        )
-    }
 }

uhabits-core/src/jvmMain/java/org/isoron/uhabits/core/models/sqlite/SQLiteHabitList.kt

@@ -39,13 +39,23 @@ class SQLiteHabitList @Inject constructor(private val modelFactory: ModelFactory
         loaded = true
         list.groupId = this.groupId
         list.removeAll()
-        val records = repository.findAll("order by position")
+        val records = repository.findAll("order by group_id, position")
+        var shouldRebuildOrder = false
+        var currentGroup: Long? = null
+        var expectedPosition = 0
         for (rec in records) {
+            if (currentGroup != rec.groupId) {
+                currentGroup = rec.groupId
+                expectedPosition = 0
+            }
+            if (rec.position != expectedPosition) shouldRebuildOrder = true
             val h = modelFactory.buildHabit()
             rec.copyTo(h)
             (h.originalEntries as SQLiteEntryList).habitId = h.id
             if (h.groupId == list.groupId) list.add(h)
+            expectedPosition++
         }
+        if (shouldRebuildOrder) rebuildOrder()
     }
 
     @Synchronized
@@ -61,6 +71,26 @@ class SQLiteHabitList @Inject constructor(private val modelFactory: ModelFactory
         observable.notifyListeners()
     }
 
+    @Synchronized
+    private fun rebuildOrder() {
+        val records = repository.findAll("order by group_id, position")
+        repository.executeAsTransaction {
+            var currentGroup: Long? = null
+            var expectedPosition = 0
+            for (r in records) {
+                if (currentGroup != r.groupId) {
+                    currentGroup = r.groupId
+                    expectedPosition = 0
+                }
+                if (r.position != expectedPosition) {
+                    r.position = expectedPosition
+                    repository.save(r)
+                }
+                expectedPosition++
+            }
+        }
+    }
+
     @Synchronized
     override fun add(position: Int, habit: Habit) {
         loadRecords()
@@ -137,6 +167,7 @@ class SQLiteHabitList @Inject constructor(private val modelFactory: ModelFactory
             h.originalEntries.clear()
             repository.remove(record)
         }
+        rebuildOrder()
         observable.notifyListeners()
     }
 
@@ -189,6 +220,7 @@ class SQLiteHabitList @Inject constructor(private val modelFactory: ModelFactory
     @Synchronized
     override fun repair() {
         loadRecords()
+        rebuildOrder()
         observable.notifyListeners()
     }
 

uhabits-core/src/jvmMain/resources/migrations/26.sql

@@ -5,7 +5,22 @@ create table SharedIds (
 
 insert into SharedIds (name, next_id) values ('habitandgroup', (select coalesce(max(id),0) from Habits) + 1 );
 
-alter table Habits rename to HabitsOld;
+create table HabitGroups (
+    id integer primary key,
+    archived integer,
+    color integer,
+    description text not null default "",
+    highlight integer,
+    name text,
+    position integer,
+    reminder_days integer not null default 127,
+    reminder_hour integer,
+    reminder_min integer,
+    question text not null default "",
+    uuid text
+);
+
+alter table Habits rename to Habits_old;
 
 create table Habits (
     id integer primary key,
@@ -25,29 +40,37 @@ create table Habits (
     target_value real not null default 0,
     unit text not null default "",
     question text,
-    uuid text
+    uuid text,
+    group_id integer,
+    group_uuid text,
+    foreign key(group_id)
+        references HabitGroups(id)
+            on update cascade
+            on delete cascade
 );
 
 insert into Habits (id, archived, color, description, freq_den, freq_num, highlight, name, position, reminder_min, reminder_days, type, target_type, target_value, unit, question, uuid)
 select id, archived, color, description, freq_den, freq_num, highlight, name, position, reminder_min, reminder_days, type, target_type, target_value, unit, question, uuid
-from HabitsOld;
+from Habits_old;
 
-drop table HabitsOld;
+PRAGMA foreign_keys = OFF;
+begin transaction;
 
-create table HabitGroups (
-    id integer primary key,
-    archived integer,
-    color integer,
-    description text not null default "",
-    highlight integer,
-    name text,
-    position integer,
-    reminder_days integer not null default 127,
-    reminder_hour integer,
-    reminder_min integer,
-    question text not null default "",
-    uuid text
+    alter table Repetitions rename to Repetitions_old;
+    create table Repetitions (
+        id integer primary key autoincrement,
+        habit integer,
+        timestamp integer,
+        value integer not null,
+        notes text,
+        foreign key (habit)
+            references Habits(id)
+                on update cascade
+                on delete cascade
     );
+    insert into Repetitions select * from Repetitions_old;
+    drop table Repetitions_old;
+    drop table Habits_old;
 
-alter table Habits add column group_uuid text references habitgroups(uuid);
-alter table Habits add column group_id integer references habitgroups(id);
+commit;
+PRAGMA foreign_keys = ON;

uhabits-core/src/jvmTest/java/org/isoron/uhabits/core/commands/EditHabitCommandTest.kt

@@ -52,7 +52,7 @@ class EditHabitCommandTest : BaseUnitTest() {
 
     @Test
     fun testExecute() {
-        command = EditHabitCommand(habitList, habit.uuid!!, modified)
+        command = EditHabitCommand(habitList, habit.id!!, modified)
         val originalScore = habit.scores[today].value
         assertThat(habit.name, equalTo("original"))
         command.run()

uhabits-core/src/jvmTest/java/org/isoron/uhabits/core/models/sqlite/SQLiteHabitListTest.kt

@@ -35,7 +35,6 @@ import org.junit.Assert.assertThrows
 import org.junit.Test
 import org.mockito.kotlin.mock
 import org.mockito.kotlin.verify
-import java.util.ArrayList
 import kotlin.test.assertNull
 
 class SQLiteHabitListTest : BaseUnitTest() {
@@ -49,6 +48,7 @@ class SQLiteHabitListTest : BaseUnitTest() {
     override fun setUp() {
         super.setUp()
         val db: Database = buildMemoryDatabase()
+        db.execute("PRAGMA foreign_keys = ON;")
         modelFactory = SQLModelFactory(db)
         habitList = SQLiteHabitList(modelFactory)
         fixtures = HabitFixtures(modelFactory, habitList)
@@ -98,8 +98,8 @@ class SQLiteHabitListTest : BaseUnitTest() {
         habit.name = "Hello world with id"
         habit.id = 12300L
         habitList.add(habit)
-        assertThat(habit.id, equalTo(12300L))
-        val record = repository.find(12300L)
+        assertThat(habit.id, equalTo(11L))
+        val record = repository.find(11L)
         assertThat(record!!.name, equalTo(habit.name))
     }
 

uhabits-core/src/jvmTest/java/org/isoron/uhabits/core/reminders/ReminderSchedulerTest.kt

@@ -56,7 +56,7 @@ class ReminderSchedulerTest : BaseUnitTest() {
         habit = fixtures.createEmptyHabit()
         habit.id = habitId
         reminderScheduler =
-            ReminderScheduler(commandRunner, habitList, sys, widgetPreferences)
+            ReminderScheduler(commandRunner, habitList, habitGroupList, sys, widgetPreferences)
         setFixedTimeZone(TimeZone.getTimeZone("GMT-4"))
     }
 

uhabits-core/src/jvmTest/java/org/isoron/uhabits/core/ui/screens/habits/list/HabitCardListCacheTest.kt

@@ -82,8 +82,8 @@ class HabitCardListCacheTest : BaseUnitTest() {
         val h = habitList.getByPosition(3)
         val score = h.scores[today].value
         assertThat(cache.getHabitByPosition(3), equalTo(h))
-        assertThat(cache.getScore(h.uuid!!), equalTo(score))
-        val actualCheckmarks = cache.getCheckmarks(h.uuid!!)
+        assertThat(cache.getScore(h.id!!), equalTo(score))
+        val actualCheckmarks = cache.getCheckmarks(h.id!!)
 
         val expectedCheckmarks = h
             .computedEntries