Implement database access (with migrations)

android/build.gradle

@@ -67,6 +67,7 @@ dependencies {
     implementation 'com.android.support:appcompat-v7:28.0.0'
     implementation files("../core/build/libs/core-jvm.jar")
     implementation "com.facebook.react:react-native:0.57.8"
+    implementation 'org.sqldroid:sqldroid:1.0.3'
     implementation project(':react-native-svg')
 
     testImplementation 'junit:junit:4.12'

android/gradle/wrapper/gradle-wrapper.properties

@@ -1,3 +1,22 @@
+#
+# Copyright (C) 2016-2019 Álinson Santos Xavier <isoron@gmail.com>
+#
+# This file is part of Loop Habit Tracker.
+#
+# Loop Habit Tracker is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by the
+# Free Software Foundation, either version 3 of the License, or (at your
+# option) any later version.
+#
+# Loop Habit Tracker is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+# or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+# more details.
+#
+# You should have received a copy of the GNU General Public License along
+# with this program. If not, see <http://www.gnu.org/licenses/>.
+#
+
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 distributionUrl=https\://services.gradle.org/distributions/gradle-5.1.1-bin.zip

android/src/androidTest/java/org/isoron/habits/AndroidDatabaseTest.kt

@@ -0,0 +1,72 @@
+/*
+ * Copyright (C) 2016-2019 Álinson Santos Xavier <isoron@gmail.com>
+ *
+ * This file is part of Loop Habit Tracker.
+ *
+ * Loop Habit Tracker is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by the
+ * Free Software Foundation, either version 3 of the License, or (at your
+ * option) any later version.
+ *
+ * Loop Habit Tracker is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package org.isoron.habits
+
+import junit.framework.Assert.*
+import org.isoron.uhabits.utils.*
+import org.junit.*
+
+class AndroidDatabaseTest : BaseTest() {
+    @Test
+    fun testUsage() {
+        val dbFile = fileOpener.openUserFile("test.sqlite3")
+        if (dbFile.exists()) dbFile.delete()
+        val db = databaseOpener.open(dbFile)
+
+        var stmt = db.prepareStatement("drop table if exists demo")
+        stmt.step()
+        stmt.finalize()
+
+        stmt = db.prepareStatement("begin")
+        stmt.step()
+        stmt.finalize()
+
+        stmt = db.prepareStatement("create table if not exists demo(key int, value text)")
+        stmt.step()
+        stmt.finalize()
+
+        stmt = db.prepareStatement("insert into demo(key, value) values (?1, ?2)")
+        stmt.bindInt(1, 42)
+        stmt.bindText(2, "Hello World")
+        stmt.step()
+        stmt.finalize()
+
+        stmt = db.prepareStatement("select * from demo where key > ?1")
+        stmt.bindInt(1, 10)
+        var result = stmt.step()
+        assertEquals(result, StepResult.ROW)
+        assertEquals(stmt.getInt(0), 42)
+        assertEquals(stmt.getText(1), "Hello World")
+        result = stmt.step()
+        assertEquals(result, StepResult.DONE)
+        stmt.finalize()
+
+        stmt = db.prepareStatement("drop table demo")
+        stmt.step()
+        stmt.finalize()
+
+        stmt = db.prepareStatement("commit")
+        stmt.step()
+        stmt.finalize()
+
+        db.close()
+        dbFile.delete()
+    }
+}

android/src/androidTest/java/org/isoron/habits/AndroidFilesTest.kt

@@ -0,0 +1,46 @@
+/*
+ * Copyright (C) 2016-2019 Álinson Santos Xavier <isoron@gmail.com>
+ *
+ * This file is part of Loop Habit Tracker.
+ *
+ * Loop Habit Tracker is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by the
+ * Free Software Foundation, either version 3 of the License, or (at your
+ * option) any later version.
+ *
+ * Loop Habit Tracker is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package org.isoron.habits
+
+import org.junit.Test
+
+import org.junit.Assert.*
+import java.io.*
+
+class AndroidFilesTest : BaseTest() {
+
+    @Test
+    fun testUserFiles() {
+        val file = File(context.filesDir, "test.txt")
+        file.writeText("Hello world!")
+
+        val af = fileOpener.openUserFile("test.txt")
+        assertTrue(af.exists())
+        af.delete()
+        assertFalse(af.exists())
+    }
+
+    @Test
+    fun testResourceFiles() {
+        val file = fileOpener.openResourceFile("migrations/010.sql")
+        val lines = file.readLines()
+        assertEquals("delete from Score", lines[0])
+    }
+}

android/src/androidTest/java/org/isoron/habits/BaseTest.kt

@@ -0,0 +1,28 @@
+/*
+ * Copyright (C) 2016-2019 Álinson Santos Xavier <isoron@gmail.com>
+ *
+ * This file is part of Loop Habit Tracker.
+ *
+ * Loop Habit Tracker is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by the
+ * Free Software Foundation, either version 3 of the License, or (at your
+ * option) any later version.
+ *
+ * Loop Habit Tracker is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package org.isoron.habits
+
+import android.support.test.*
+
+open class BaseTest {
+    val context = InstrumentationRegistry.getTargetContext()
+    val fileOpener = AndroidFileOpener(context)
+    val databaseOpener = AndroidDatabaseOpener()
+}

android/src/main/assets

@@ -0,0 +1 @@
+../../../core/assets/main/

android/src/main/java/org/isoron/habits/AndroidDatabase.kt

@@ -0,0 +1,33 @@
+/*
+ * Copyright (C) 2016-2019 Álinson Santos Xavier <isoron@gmail.com>
+ *
+ * This file is part of Loop Habit Tracker.
+ *
+ * Loop Habit Tracker is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by the
+ * Free Software Foundation, either version 3 of the License, or (at your
+ * option) any later version.
+ *
+ * Loop Habit Tracker is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package org.isoron.habits
+
+import org.isoron.uhabits.database.*
+import org.isoron.uhabits.utils.*
+import java.sql.*
+
+class AndroidDatabaseOpener : DatabaseOpener {
+    override fun open(file: UserFile): Database {
+        val platformFile = file as AndroidUserFile
+        DriverManager.registerDriver(Class.forName("org.sqldroid.SQLDroidDriver").newInstance() as Driver)
+        val conn = DriverManager.getConnection("jdbc:sqlite:${platformFile.file.absolutePath}")
+        return JavaDatabase(conn, AndroidLog())
+    }
+}

android/src/main/java/org/isoron/habits/AndroidFiles.kt

@@ -0,0 +1,62 @@
+/*
+ * Copyright (C) 2016-2019 Álinson Santos Xavier <isoron@gmail.com>
+ *
+ * This file is part of Loop Habit Tracker.
+ *
+ * Loop Habit Tracker is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by the
+ * Free Software Foundation, either version 3 of the License, or (at your
+ * option) any later version.
+ *
+ * Loop Habit Tracker is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package org.isoron.habits
+
+import android.content.*
+import org.isoron.uhabits.utils.*
+import java.io.*
+import java.util.*
+
+
+class AndroidFileOpener(val context: Context) : FileOpener {
+    override fun openUserFile(filename: String): UserFile {
+        return AndroidUserFile(File(context.filesDir, filename))
+    }
+
+    override fun openResourceFile(filename: String): ResourceFile {
+        return AndroidResourceFile(context, filename)
+    }
+}
+
+class AndroidResourceFile(val context: Context,
+                          val filename: String) : ResourceFile {
+
+    override fun readLines(): List<String> {
+        val asset = context.assets.open(filename)
+        val reader = BufferedReader(InputStreamReader(asset))
+        val lines = ArrayList<String>()
+        while (true) {
+            val line = reader.readLine() ?: break
+            lines.add(line)
+        }
+        return lines
+    }
+}
+
+class AndroidUserFile(val file: File) : UserFile {
+    override fun delete() {
+        file.delete()
+    }
+
+    override fun exists(): Boolean {
+        return file.exists()
+    }
+
+}

android/src/main/java/org/isoron/habits/AndroidLog.kt

@@ -0,0 +1,32 @@
+/*
+ * Copyright (C) 2016-2019 Álinson Santos Xavier <isoron@gmail.com>
+ *
+ * This file is part of Loop Habit Tracker.
+ *
+ * Loop Habit Tracker is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by the
+ * Free Software Foundation, either version 3 of the License, or (at your
+ * option) any later version.
+ *
+ * Loop Habit Tracker is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package org.isoron.habits
+
+import org.isoron.uhabits.utils.*
+
+class AndroidLog : Log {
+    override fun debug(msg: String) {
+        android.util.Log.d("LOOP", msg)
+    }
+
+    override fun info(msg: String) {
+        android.util.Log.i("LOOP", msg)
+    }
+}

android/src/main/java/org/isoron/habits/CoreModule.kt

@@ -24,24 +24,17 @@ import com.facebook.react.modules.core.DeviceEventManagerModule.*
 import org.isoron.uhabits.*
 
 
-class CoreModule(
-        private val context: ReactApplicationContext
-) : ReactContextBaseJavaModule(context) {
+class CoreModule(private val context: ReactApplicationContext) : ReactContextBaseJavaModule(context) {
+
+    private var backend = Backend(AndroidDatabaseOpener(),
+                                  AndroidFileOpener(context),
+                                  AndroidLog())
 
-    private var backend = Backend()
     private lateinit var emitter: RCTDeviceEventEmitter
 
     override fun initialize() {
         super.initialize()
         emitter = context.getJSModule(RCTDeviceEventEmitter::class.java)
-        backend.createHabit("Wake up early")
-        backend.createHabit("Wash clothes")
-        backend.createHabit("Exercise")
-        backend.createHabit("Meditate")
-        backend.createHabit("Take vitamins")
-        backend.createHabit("Write 'the quick brown fox jumps over the lazy dog' daily")
-        backend.createHabit("Write journal")
-        backend.createHabit("Study French")
     }
 
     override fun getName(): String {
@@ -50,15 +43,17 @@ class CoreModule(
 
     @ReactMethod
     fun requestHabitList() {
-        val params = Arguments.createArray()
-        for ((id, data) in backend.getHabitList()) {
-            params.pushMap(Arguments.createMap().apply {
-                putString("key", id.toString())
-                putString("name", data["name"] as String)
-                putInt("color", data["color"] as Int)
+        val result = backend.getHabitList()
+        val data = Arguments.createArray()
+        for (r in result) {
+            data.pushMap(Arguments.createMap().apply {
+                for ((key, value) in r) {
+                    if (value is String) putString(key, value)
+                    else if (value is Int) putInt(key, value)
+                }
             })
         }
-        emitter.emit("onHabitList", params)
+        emitter.emit("onHabitList", data)
     }
 
     @ReactMethod