create database context with minimizing model

app/build.gradle

@@ -43,6 +43,9 @@ dependencies {
     kapt "android.arch.persistence.room:compiler:$rootProject.roomVersion"
     androidTestImplementation "android.arch.persistence.room:testing:$rootProject.roomVersion"
 
+    implementation "androidx.lifecycle:lifecycle-extensions:$rootProject.lifecycleVersion"
+    implementation "androidx.lifecycle:lifecycle-viewmodel-ktx:$rootProject.lifecycleVersion"
+
     // Unit testing dependencies.
     testImplementation 'junit:junit:4.12'
     testImplementation 'com.google.truth:truth:0.44'

app/src/main/java/com/ratanparai/moviedog/db/AppDatabase.kt

@@ -0,0 +1,34 @@
+package com.ratanparai.moviedog.db
+
+import android.content.Context
+import androidx.room.Database
+import androidx.room.Room
+import androidx.room.RoomDatabase
+import com.ratanparai.moviedog.db.dao.MovieDao
+import com.ratanparai.moviedog.db.entity.Movie
+import com.ratanparai.moviedog.utilities.DATABASE_NAME
+
+
+@Database(entities = [Movie::class], version = 1, exportSchema = false)
+abstract class AppDatabase : RoomDatabase() {
+    abstract fun movieDao(): MovieDao
+
+    companion object {
+
+        // For Singleton instantiation
+        @Volatile private var instance: AppDatabase? = null
+
+        fun getInstance(context: Context): AppDatabase {
+            return instance ?: synchronized(this) {
+                instance ?: buildDatabase(context).also { instance = it }
+            }
+        }
+
+        // Create and pre-populate the database. See this article for more details:
+        // https://medium.com/google-developers/7-pro-tips-for-room-fbadea4bfbd1#4785
+        private fun buildDatabase(context: Context): AppDatabase {
+            return Room.databaseBuilder(context, AppDatabase::class.java, DATABASE_NAME)
+                .build()
+        }
+    }
+}

app/src/main/java/com/ratanparai/moviedog/db/dao/MovieDao.kt

@@ -2,8 +2,9 @@ package com.ratanparai.moviedog.db.dao
 
 import androidx.lifecycle.LiveData
 import androidx.room.Dao
+import androidx.room.Insert
 import androidx.room.Query
-import com.ratanparai.moviedog.Movie
+import com.ratanparai.moviedog.db.entity.Movie
 
 @Dao
 interface MovieDao {
@@ -15,4 +16,7 @@ interface MovieDao {
 
     @Query("SELECT * FROM movies WHERE imdbId = :imdbId")
     fun getMovie(imdbId : String) : LiveData<Movie>
+
+    @Insert
+    fun insertMovie(movie: Movie): Long
 }

app/src/main/java/com/ratanparai/moviedog/db/entity/Movie.kt

@@ -11,17 +11,7 @@ data class Movie (
     val description : String,
     val imdbId : String,
     val cardImage : String,
-    val backgroundImage : String?,
     val videoUrl : String,
-    val contentType : String?,
-    val live : Boolean?,
-    val width : Int,
-    val height : Int,
-    val audioChannelConfig : String?,
-    val purchasePrice : String?,
-    val rentalPrice : String?,
-    val ratingStyle: Int?,
-    val ratingScore: Double,
     val productionYear : Int,
     val duration: Int
 )

app/src/main/java/com/ratanparai/moviedog/db/repository/MovieRepository.kt

@@ -1,7 +1,6 @@
 package com.ratanparai.moviedog.db.repository
 
 import com.ratanparai.moviedog.db.dao.MovieDao
-import com.ratanparai.moviedog.scrapper.DekhvhaiScrapper
 
 class MovieRepository private constructor(private val movieDao : MovieDao){
 

app/src/main/java/com/ratanparai/moviedog/utilities/Constant.kt

@@ -0,0 +1,6 @@
+package com.ratanparai.moviedog.utilities
+
+/**
+ * Constants used throughout the app.
+ */
+const val DATABASE_NAME = "moviedog-db"

build.gradle

@@ -7,11 +7,12 @@ buildscript {
         roomVersion = '1.1.1'
         archLifecycleVersion = '1.1.1'
         coroutines = '0.26.1'
+        lifecycleVersion = '2.1.0-alpha04'
     }
     repositories {
         google()
         jcenter()
-        
+
     }
     dependencies {
         classpath 'com.android.tools.build:gradle:3.3.1'
@@ -25,7 +26,7 @@ allprojects {
     repositories {
         google()
         jcenter()
-        
+
     }
 }