Convert the flavor specific Java classes to Kotlin. https://redmine.stoutner.com...

[PrivacyBrowserAndroid.git] / app / src / free / java / com / stoutner / privacybrowser / helpers / AdConsentDatabaseHelper.kt

diff --git a/app/src/free/java/com/stoutner/privacybrowser/helpers/AdConsentDatabaseHelper.kt b/app/src/free/java/com/stoutner/privacybrowser/helpers/AdConsentDatabaseHelper.kt
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@@ -0,0 +1,92 @@
+/*
+ * Copyright © 2018,2021 Soren Stoutner <soren@stoutner.com>.
+ *
+ * This file is part of Privacy Browser <https://www.stoutner.com/privacy-browser>.
+ *
+ * Privacy Browser 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.
+ *
+ * Privacy Browser 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 Privacy Browser.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.stoutner.privacybrowser.helpers
+
+import android.content.ContentValues
+import android.content.Context
+import android.database.sqlite.SQLiteDatabase
+import android.database.sqlite.SQLiteOpenHelper
+
+// Define the class constants.
+private const val SCHEMA_VERSION = 1
+private const val AD_CONSENT_DATABASE = "ad_consent.db"
+private const val AD_CONSENT_TABLE = "ad_consent"
+private const val ID = "_id"
+private const val AD_CONSENT = "ad_consent"
+private const val CREATE_AD_CONSENT_TABLE = "CREATE TABLE $AD_CONSENT_TABLE ($ID INTEGER PRIMARY KEY, $AD_CONSENT BOOLEAN)"
+
+class AdConsentDatabaseHelper (context: Context) : SQLiteOpenHelper(context, AD_CONSENT_DATABASE, null, SCHEMA_VERSION) {
+    override fun onCreate(adConsentDatabase: SQLiteDatabase) {
+        // Create the ad consent table.
+        adConsentDatabase.execSQL(CREATE_AD_CONSENT_TABLE)
+
+        // Create an ad consent content values.
+        val adConsentContentValues = ContentValues()
+
+        // Populate the ad consent content values with the default data.
+        adConsentContentValues.put(AD_CONSENT, false)
+
+        // Insert a new row.  The second argument is `null`, which makes it so that a completely null row cannot be created.
+        adConsentDatabase.insert(AD_CONSENT_TABLE, null, adConsentContentValues)
+    }
+
+    override fun onUpgrade(adConsentDatabase: SQLiteDatabase, oldVersion: Int, newVersion: Int) {
+        // Code for upgrading the database will be added here if the schema version ever increases above 1.
+    }
+
+    // Check to see if ad consent has been granted.
+    val isGranted: Boolean get() {
+        // Get a readable database handle.
+        val adConsentDatabase = this.readableDatabase
+
+        // Get the ad consent cursor.
+        val adConsentCursor = adConsentDatabase.rawQuery("SELECT * FROM $AD_CONSENT_TABLE", null)
+
+        // Move the cursor to the first entry.
+        adConsentCursor.moveToFirst()
+
+        // Get the ad consent boolean.
+        val adConsent = adConsentCursor.getInt(adConsentCursor.getColumnIndex(AD_CONSENT)) == 1
+
+        // Close the cursor.
+        adConsentCursor.close()
+
+        // Close the database.
+        adConsentDatabase.close()
+
+        // Return the ad consent boolean.
+        return adConsent
+    }
+
+    // Update the ad consent.
+    fun updateAdConsent(adConsent: Boolean) {
+        // Get a writable database handle.
+        val adConsentDatabase = this.writableDatabase
+
+        // Set the ad consent integer according to the boolean.
+        val adConsentInt = if (adConsent) 1 else 0
+
+        // Update the ad consent in the database.
+        adConsentDatabase.execSQL("UPDATE $AD_CONSENT_TABLE SET $AD_CONSENT = $adConsentInt")
+
+        // Close the database.
+        adConsentDatabase.close()
+    }
+}
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