Adding the application architecture

app/src/main/AndroidManifest.xml

@@ -11,10 +11,10 @@
         android:supportsRtl="true"
         android:theme="@style/AppTheme">
         <activity
-            android:name=".CoinDetailActivity"
+            android:name=".presentation.CoinDetailActivity"
             android:exported="false" />
         <activity
-            android:name=".CoinPriceListActivity"
+            android:name=".presentation.CoinPriceListActivity"
             android:exported="true">
             <intent-filter>
                 <action android:name="android.intent.action.MAIN" />

app/src/main/java/com/example/cryptoapp/database/AppDatabase.kt → app/src/main/java/com/example/cryptoapp/data/database/AppDatabase.kt

@@ -1,10 +1,10 @@
-package com.example.cryptoapp.database
+package com.example.cryptoapp.data.database
 
 import android.content.Context
 import androidx.room.Database
 import androidx.room.Room
 import androidx.room.RoomDatabase
-import com.example.cryptoapp.pojo.CoinPriceInfo
+import com.example.cryptoapp.data.model.CoinPriceInfo
 
 @Database(entities = [CoinPriceInfo::class], version = 1, exportSchema = false)
 abstract class AppDatabase : RoomDatabase() {

app/src/main/java/com/example/cryptoapp/database/CoinPriceInfoDao.kt → app/src/main/java/com/example/cryptoapp/data/database/CoinPriceInfoDao.kt

@@ -1,11 +1,11 @@
-package com.example.cryptoapp.database
+package com.example.cryptoapp.data.database
 
 import androidx.lifecycle.LiveData
 import androidx.room.Dao
 import androidx.room.Insert
 import androidx.room.OnConflictStrategy
 import androidx.room.Query
-import com.example.cryptoapp.pojo.CoinPriceInfo
+import com.example.cryptoapp.data.model.CoinPriceInfo
 
 @Dao
 interface CoinPriceInfoDao {

app/src/main/java/com/example/cryptoapp/pojo/CoinInfo.kt → app/src/main/java/com/example/cryptoapp/data/model/CoinInfo.kt

@@ -1,4 +1,4 @@
-package com.example.cryptoapp.pojo
+package com.example.cryptoapp.data.model
 
 import com.google.gson.annotations.Expose
 import com.google.gson.annotations.SerializedName

app/src/main/java/com/example/cryptoapp/pojo/CoinInfoListOfData.kt → app/src/main/java/com/example/cryptoapp/data/model/CoinInfoListOfData.kt

@@ -1,4 +1,4 @@
-package com.example.cryptoapp.pojo
+package com.example.cryptoapp.data.model
 
 import com.google.gson.annotations.Expose
 import com.google.gson.annotations.SerializedName

app/src/main/java/com/example/cryptoapp/pojo/CoinPriceInfo.kt → app/src/main/java/com/example/cryptoapp/data/model/CoinPriceInfo.kt

@@ -1,8 +1,8 @@
-package com.example.cryptoapp.pojo
+package com.example.cryptoapp.data.model
 
 import androidx.room.Entity
 import androidx.room.PrimaryKey
-import com.example.cryptoapp.api.ApiFactory.BASE_IMAGE_URL
+import com.example.cryptoapp.data.network.ApiFactory.BASE_IMAGE_URL
 import com.example.cryptoapp.utils.convertTimestampToTime
 import com.google.gson.annotations.Expose
 import com.google.gson.annotations.SerializedName
@@ -128,6 +128,7 @@ data class CoinPriceInfo(
     @Expose
     val imageUrl: String?
 ) {
+
     fun getFormattedTime(): String {
         return convertTimestampToTime(lastUpdate)
     }

app/src/main/java/com/example/cryptoapp/pojo/CoinPriceInfoRawData.kt → app/src/main/java/com/example/cryptoapp/data/model/CoinPriceInfoRawData.kt

@@ -1,4 +1,4 @@
-package com.example.cryptoapp.pojo
+package com.example.cryptoapp.data.model
 
 import com.google.gson.JsonObject
 import com.google.gson.annotations.Expose

app/src/main/java/com/example/cryptoapp/pojo/Datum.kt → app/src/main/java/com/example/cryptoapp/data/model/Datum.kt

@@ -1,4 +1,4 @@
-package com.example.cryptoapp.pojo
+package com.example.cryptoapp.data.model
 
 import com.google.gson.annotations.Expose
 import com.google.gson.annotations.SerializedName

app/src/main/java/com/example/cryptoapp/api/ApiFactory.kt → app/src/main/java/com/example/cryptoapp/data/network/ApiFactory.kt

@@ -1,4 +1,4 @@
-package com.example.cryptoapp.api
+package com.example.cryptoapp.data.network
 
 import retrofit2.Retrofit
 import retrofit2.adapter.rxjava2.RxJava2CallAdapterFactory

app/src/main/java/com/example/cryptoapp/api/ApiService.kt → app/src/main/java/com/example/cryptoapp/data/network/ApiService.kt

@@ -1,7 +1,7 @@
-package com.example.cryptoapp.api
+package com.example.cryptoapp.data.network
 
-import com.example.cryptoapp.pojo.CoinInfoListOfData
-import com.example.cryptoapp.pojo.CoinPriceInfoRawData
+import com.example.cryptoapp.data.model.CoinInfoListOfData
+import com.example.cryptoapp.data.model.CoinPriceInfoRawData
 import io.reactivex.Single
 import retrofit2.http.GET
 import retrofit2.http.Query

app/src/main/java/com/example/cryptoapp/domain/CoinInfo.kt

@@ -0,0 +1,12 @@
+package com.example.cryptoapp.domain
+
+data class CoinInfo(
+    val fromSymbol: String,
+    val toSymbol: String?,
+    val price: String?,
+    val lastUpdate: Long?,
+    val highDay: String?,
+    val lowDay: String?,
+    val lastMarket: String?,
+    val imageUrl: String?
+)

app/src/main/java/com/example/cryptoapp/domain/CoinRepository.kt

@@ -0,0 +1,10 @@
+package com.example.cryptoapp.domain
+
+import androidx.lifecycle.LiveData
+
+interface CoinRepository {
+
+    fun getCoinInfoList(): LiveData<List<CoinInfo>>
+
+    fun getCoinInfo(fromSymbol: String): LiveData<CoinInfo>
+}

app/src/main/java/com/example/cryptoapp/domain/GetCoinInfoListUseCase.kt

@@ -0,0 +1,6 @@
+package com.example.cryptoapp.domain
+
+class GetCoinInfoListUseCase(private val repository: CoinRepository) {
+
+    operator fun invoke() = repository.getCoinInfoList()
+}

app/src/main/java/com/example/cryptoapp/domain/GetCoinInfoUseCase.kt

@@ -0,0 +1,6 @@
+package com.example.cryptoapp.domain
+
+class GetCoinInfoUseCase(private val repository: CoinRepository) {
+
+    operator fun invoke(fromSymbol: String) = repository.getCoinInfo(fromSymbol)
+}

app/src/main/java/com/example/cryptoapp/CoinDetailActivity.kt → app/src/main/java/com/example/cryptoapp/presentation/CoinDetailActivity.kt

@@ -1,4 +1,4 @@
-package com.example.cryptoapp
+package com.example.cryptoapp.presentation
 
 import android.content.Context
 import android.content.Intent
@@ -8,6 +8,7 @@ import android.widget.TextView
 import androidx.appcompat.app.AppCompatActivity
 import androidx.lifecycle.Observer
 import androidx.lifecycle.ViewModelProvider
+import com.example.cryptoapp.R
 import com.squareup.picasso.Picasso
 
 class CoinDetailActivity : AppCompatActivity() {

app/src/main/java/com/example/cryptoapp/CoinPriceListActivity.kt → app/src/main/java/com/example/cryptoapp/presentation/CoinPriceListActivity.kt

@@ -1,12 +1,13 @@
-package com.example.cryptoapp
+package com.example.cryptoapp.presentation
 
 import android.os.Bundle
 import androidx.appcompat.app.AppCompatActivity
 import androidx.lifecycle.Observer
 import androidx.lifecycle.ViewModelProvider
 import androidx.recyclerview.widget.RecyclerView
-import com.example.cryptoapp.adapters.CoinInfoAdapter
-import com.example.cryptoapp.pojo.CoinPriceInfo
+import com.example.cryptoapp.R
+import com.example.cryptoapp.presentation.adapters.CoinInfoAdapter
+import com.example.cryptoapp.data.model.CoinPriceInfo
 
 class CoinPriceListActivity : AppCompatActivity() {
 
@@ -29,7 +30,7 @@ class CoinPriceListActivity : AppCompatActivity() {
         rvCoinPriceList.adapter = adapter
         viewModel = ViewModelProvider(this)[CoinViewModel::class.java]
         viewModel.priceList.observe(this, Observer {
-            adapter.coinInfoList = it
+             adapter.coinInfoList = it
         })
     }
 }

app/src/main/java/com/example/cryptoapp/CoinViewModel.kt → app/src/main/java/com/example/cryptoapp/presentation/CoinViewModel.kt

@@ -1,13 +1,13 @@
-package com.example.cryptoapp
+package com.example.cryptoapp.presentation
 
 import android.app.Application
 import android.util.Log
 import androidx.lifecycle.AndroidViewModel
 import androidx.lifecycle.LiveData
-import com.example.cryptoapp.api.ApiFactory
-import com.example.cryptoapp.database.AppDatabase
-import com.example.cryptoapp.pojo.CoinPriceInfo
-import com.example.cryptoapp.pojo.CoinPriceInfoRawData
+import com.example.cryptoapp.data.network.ApiFactory
+import com.example.cryptoapp.data.database.AppDatabase
+import com.example.cryptoapp.data.model.CoinPriceInfo
+import com.example.cryptoapp.data.model.CoinPriceInfoRawData
 import com.google.gson.Gson
 import io.reactivex.disposables.CompositeDisposable
 import io.reactivex.schedulers.Schedulers

app/src/main/java/com/example/cryptoapp/adapters/CoinInfoAdapter.kt → app/src/main/java/com/example/cryptoapp/presentation/adapters/CoinInfoAdapter.kt

@@ -1,4 +1,4 @@
-package com.example.cryptoapp.adapters
+package com.example.cryptoapp.presentation.adapters
 
 import android.content.Context
 import android.view.LayoutInflater
@@ -8,7 +8,7 @@ import android.widget.ImageView
 import android.widget.TextView
 import androidx.recyclerview.widget.RecyclerView
 import com.example.cryptoapp.R
-import com.example.cryptoapp.pojo.CoinPriceInfo
+import com.example.cryptoapp.data.model.CoinPriceInfo
 import com.squareup.picasso.Picasso
 
 class CoinInfoAdapter(private val context: Context) :

app/src/main/res/layout/activity_coin_detail.xml

@@ -4,7 +4,7 @@
     xmlns:tools="http://schemas.android.com/tools"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
-    tools:context=".CoinDetailActivity">
+    tools:context=".presentation.CoinDetailActivity">
 
     <ImageView
         android:id="@+id/ivLogoCoin"

app/src/main/res/layout/activity_coin_prce_list.xml

@@ -4,7 +4,7 @@
     xmlns:tools="http://schemas.android.com/tools"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
-    tools:context=".CoinPriceListActivity">
+    tools:context=".presentation.CoinPriceListActivity">
 
     <androidx.recyclerview.widget.RecyclerView
         android:id="@+id/rvCoinPriceList"