Retrofit API + Dollar Rate Objects 80% done

app/build.gradle

@@ -44,5 +44,8 @@ dependencies {
     testImplementation 'junit:junit:4.+'
     androidTestImplementation 'androidx.test.ext:junit:1.1.2'
     androidTestImplementation 'androidx.test.espresso:espresso-core:3.3.0'
+
+    implementation 'com.squareup.retrofit2:retrofit:2.9.0'
+    implementation 'com.squareup.retrofit2:converter-gson:2.9.0'
 }
 

app/src/main/java/fr/romanet/vj/apps/myrealestateagency/DollarCurrencyObj.java

@@ -0,0 +1,34 @@
+package fr.romanet.vj.apps.myrealestateagency;
+
+import com.google.gson.annotations.SerializedName;
+
+import java.io.Serializable;
+
+public class DollarCurrencyObj implements Serializable {
+
+    @SerializedName("rates")
+    private DollarCurrencyRateObj dollarCurrencyRateObj;
+    @SerializedName("date")
+    private String fetchDate;
+
+    public DollarCurrencyObj(DollarCurrencyRateObj dollarCurrencyRateObj, String fetchDate) {
+        this.dollarCurrencyRateObj = dollarCurrencyRateObj;
+        this.fetchDate = fetchDate;
+    }
+
+    public DollarCurrencyRateObj getDollarCurrencyRateObj() {
+        return dollarCurrencyRateObj;
+    }
+
+    public void setDollarCurrencyRateObj(DollarCurrencyRateObj dollarCurrencyRateObj) {
+        this.dollarCurrencyRateObj = dollarCurrencyRateObj;
+    }
+
+    public String getFetchDate() {
+        return fetchDate;
+    }
+
+    public void setFetchDate(String fetchDate) {
+        this.fetchDate = fetchDate;
+    }
+}

app/src/main/java/fr/romanet/vj/apps/myrealestateagency/DollarCurrencyRateObj.java

@@ -0,0 +1,23 @@
+package fr.romanet.vj.apps.myrealestateagency;
+
+import com.google.gson.annotations.SerializedName;
+
+import java.io.Serializable;
+
+public class DollarCurrencyRateObj implements Serializable {
+
+    @SerializedName("USD")
+    double value;
+
+    public DollarCurrencyRateObj(double value) {
+        this.value = value;
+    }
+
+    public double getValue() {
+        return value;
+    }
+
+    public void setValue(double value) {
+        this.value = value;
+    }
+}

app/src/main/java/fr/romanet/vj/apps/myrealestateagency/dao/DollarCurrencyDao.java

@@ -3,6 +3,8 @@ package fr.romanet.vj.apps.myrealestateagency.dao;
 import androidx.room.Dao;
 import androidx.room.Query;
 
+import java.text.DateFormat;
+import java.util.Date;
 import java.util.List;
 
 import fr.romanet.vj.apps.myrealestateagency.entities.DollarCurrency;
@@ -12,4 +14,7 @@ public interface DollarCurrencyDao {
 
     @Query("SELECT * FROM dollar")
     List<DollarCurrency> getDollarCurrencyList();
+
+//    @Query("UPDATE dollar SET value = :value WHERE fetch_date = :fetchDate")
+//    void updateDollarRate(double value, Date fetchDate);
 }

app/src/main/java/fr/romanet/vj/apps/myrealestateagency/database/RealEstateAgencyDatabase.java

@@ -22,7 +22,7 @@ import fr.romanet.vj.apps.myrealestateagency.dao.AgentDao;
 import fr.romanet.vj.apps.myrealestateagency.entities.DollarCurrency;
 import fr.romanet.vj.apps.myrealestateagency.entities.Property;
 
-@Database(entities = {Agency.class, Agent.class, Property.class, DollarCurrency.class}, version = 1, exportSchema = false)
+@Database(entities = {Agency.class, Agent.class, Property.class, DollarCurrency.class}, version = 2, exportSchema = false)
 @TypeConverters({Property.Converters.class})
 public abstract class RealEstateAgencyDatabase extends RoomDatabase {
 

app/src/main/java/fr/romanet/vj/apps/myrealestateagency/entities/DollarCurrency.java

@@ -6,11 +6,15 @@ import androidx.room.Entity;
 import androidx.room.Index;
 import androidx.room.PrimaryKey;
 
+import com.google.gson.annotations.SerializedName;
+
+import java.io.Serializable;
 import java.sql.Date;
+import java.time.LocalDate;
 
 @Entity(tableName = "dollar",
         primaryKeys  = {"value", "fetch_date"})
-public class DollarCurrency {
+public class DollarCurrency implements Serializable {
 
     @NonNull
     @ColumnInfo(name = "value")
@@ -18,9 +22,9 @@ public class DollarCurrency {
 
     @NonNull
     @ColumnInfo(name = "fetch_date")
-    private Date fetchDate;
+    private String fetchDate;
 
-    public DollarCurrency(@NonNull double value, @NonNull Date fetchDate)
+    public DollarCurrency(@NonNull double value, @NonNull String fetchDate)
     {
         this.value = value;
         this.fetchDate = fetchDate;
@@ -36,12 +40,12 @@ public class DollarCurrency {
         this.value = value;
     }
 
-    public Date getFetchDate()
+    public String getFetchDate()
     {
         return fetchDate;
     }
 
-    public void setFetchDate(Date fetchDate)
+    public void setFetchDate(String fetchDate)
     {
         this.fetchDate = fetchDate;
     }

app/src/main/java/fr/romanet/vj/apps/myrealestateagency/entities/Rate.java

@@ -0,0 +1,21 @@
+package fr.romanet.vj.apps.myrealestateagency.entities;
+
+import com.google.gson.annotations.SerializedName;
+
+public class Rate {
+
+    @SerializedName("USD")
+    private String value;
+
+    public Rate(String value) {
+        this.value = value;
+    }
+
+    public String getValue() {
+        return value;
+    }
+
+    public void setValue(String value) {
+        this.value = value;
+    }
+}

app/src/main/java/fr/romanet/vj/apps/myrealestateagency/network/JsonApiInterface.java

@@ -0,0 +1,13 @@
+package fr.romanet.vj.apps.myrealestateagency.network;
+
+import fr.romanet.vj.apps.myrealestateagency.DollarCurrencyObj;
+import fr.romanet.vj.apps.myrealestateagency.entities.DollarCurrency;
+import retrofit2.Call;
+import retrofit2.http.GET;
+import retrofit2.http.Query;
+
+public interface JsonApiInterface {
+
+    @GET("latest")
+    Call<DollarCurrencyObj> getDollarRate(@Query("symbols") String symbols);
+}

app/src/main/java/fr/romanet/vj/apps/myrealestateagency/repository/DollarCurrencyRepository.java

@@ -0,0 +1,28 @@
+package fr.romanet.vj.apps.myrealestateagency.repository;
+
+import android.app.Application;
+
+import java.util.Date;
+
+import fr.romanet.vj.apps.myrealestateagency.dao.DollarCurrencyDao;
+import fr.romanet.vj.apps.myrealestateagency.database.RealEstateAgencyDatabase;
+import fr.romanet.vj.apps.myrealestateagency.entities.DollarCurrency;
+
+public class DollarCurrencyRepository {
+    private DollarCurrencyDao dollarCurrencyDao;
+
+    public DollarCurrencyRepository(Application application) {
+        RealEstateAgencyDatabase realEstateAgencyDatabase = RealEstateAgencyDatabase.getInstance(application);
+        dollarCurrencyDao = realEstateAgencyDatabase.dollarCurrencyDao();
+    }
+
+    public DollarCurrency get_dollar_currency_rate()
+    {
+        return dollarCurrencyDao.getDollarCurrencyList().get(0);
+    }
+
+//    public void update_dollar_rate(Double value, Date fetch_date){
+//        dollarCurrencyDao.updateDollarRate(value, fetch_date);
+//    }
+
+}

app/src/main/java/fr/romanet/vj/apps/myrealestateagency/repository/PropertyRepository.java

@@ -1,20 +1,29 @@
 package fr.romanet.vj.apps.myrealestateagency.repository;
 
 import android.app.Application;
+import android.util.Log;
 
 import androidx.lifecycle.LiveData;
 
 import java.util.List;
 
+import fr.romanet.vj.apps.myrealestateagency.DollarCurrencyObj;
 import fr.romanet.vj.apps.myrealestateagency.dao.PropertyDao;
 import fr.romanet.vj.apps.myrealestateagency.database.RealEstateAgencyDatabase;
 import fr.romanet.vj.apps.myrealestateagency.entities.Agency;
 import fr.romanet.vj.apps.myrealestateagency.entities.Property;
+import fr.romanet.vj.apps.myrealestateagency.network.JsonApiInterface;
+import retrofit2.Call;
+import retrofit2.Callback;
+import retrofit2.Response;
+import retrofit2.Retrofit;
+import retrofit2.converter.gson.GsonConverterFactory;
 
 public class PropertyRepository {
 
     public PropertyDao propertyDao;
     public LiveData<List<Property>> allProperties;
+    private double dollar_rate;
 
     public PropertyRepository(Application application) {
         RealEstateAgencyDatabase realEstateAgencyDatabase = RealEstateAgencyDatabase.getInstance(application);
@@ -22,6 +31,50 @@ public class PropertyRepository {
         allProperties = propertyDao.getPropertyList();
     }
 
+    public double get_dollar_rate(){
+
+        // - Answer
+        dollar_rate = 1;
+        Log.d("CAT", "---------> Call...");
+
+
+        // - Build Retrofit API tool
+        Retrofit retrofit = new Retrofit.Builder()
+                .baseUrl("https://api.exchangeratesapi.io/")
+                .addConverterFactory(GsonConverterFactory.create())
+                .build();
+
+        JsonApiInterface jsonApiInterface = retrofit.create(JsonApiInterface.class);
+//        Call<DollarCurrency> call = jsonApiInterface.getDollarRate("USD");
+        Call<DollarCurrencyObj> call = jsonApiInterface.getDollarRate("USD");
+        call.enqueue(new Callback<DollarCurrencyObj>() {
+            @Override
+            public void onResponse(Call<DollarCurrencyObj> call, Response<DollarCurrencyObj> response) {
+                if(! response.isSuccessful()){
+                    Log.d("CAT", "---------> RESP[unsuc]:" + String.valueOf(response.code()));
+                    dollar_rate = -1;
+                    return;
+                }
+
+
+                Log.d("CAT", "---------> RESP ALL:" + response.toString());
+                DollarCurrencyObj dollarCurrencyObj = response.body();
+                Log.d("CAT", "---------> RESP:" + dollarCurrencyObj.getDollarCurrencyRateObj().getValue() + " | " + String.valueOf(dollarCurrencyObj.getFetchDate()));
+                dollar_rate = dollarCurrencyObj.getDollarCurrencyRateObj().getValue();
+            }
+
+            @Override
+            public void onFailure(Call<DollarCurrencyObj> call, Throwable t) {
+                Log.d("CAT", "---------> FAILED:" + String.valueOf(t));
+                dollar_rate = -1;
+                return;
+            }
+        });
+
+        Log.d("CAT", "---------> Call...END");
+        return dollar_rate;
+    }
+
 
     public Property getOnePropertyById(int propertyId){return propertyDao.getOnePropertyById(propertyId);}
 

app/src/main/java/fr/romanet/vj/apps/myrealestateagency/view/PropertiesDetailActivity.java

@@ -129,4 +129,10 @@ public class PropertiesDetailActivity extends AppCompatActivity {
         Intent i = new Intent(PropertiesDetailActivity.this, MapsActivity.class);
         PropertiesDetailActivity.this.startActivity(i);
     }
+
+    public void convert_currency(View view){
+        double price_value = viewModel.convert_currency(property);
+        price.setText("RRPrice : " + (new DecimalFormat("##.##").format(price_value)));
+//        price.setText("RRPrice : " + (new DecimalFormat("##.##").format(1.1)));
+    }
 }

app/src/main/java/fr/romanet/vj/apps/myrealestateagency/viewmodel/PropertiesDetailActivityViewModel.java

@@ -1,7 +1,10 @@
 package fr.romanet.vj.apps.myrealestateagency.viewmodel;
 
+import android.util.Log;
+
 import androidx.lifecycle.MutableLiveData;
 import androidx.lifecycle.SavedStateHandle;
+import androidx.lifecycle.Transformations;
 import androidx.lifecycle.ViewModel;
 
 import fr.romanet.vj.apps.myrealestateagency.MyApp;
@@ -13,15 +16,34 @@ public class PropertiesDetailActivityViewModel extends ViewModel {
     public MutableLiveData<Property> property = new MutableLiveData<>();
     private PropertyRepository propertyRepository;
 
+    private Boolean current_currency_is_eur;
+
     public PropertiesDetailActivityViewModel(SavedStateHandle savedStateHandle)
     {
         final Property propertyExtra = savedStateHandle.get(PropertiesDetailActivity.PROPERTY_EXTRA);
         property.postValue(propertyExtra);
         propertyRepository = new PropertyRepository(MyApp.getInstance());
+        current_currency_is_eur = true;
     }
 
     public void deleteProperty()
     {
         propertyRepository.deleteProperty(property.getValue());
     }
+
+
+    public double convert_currency(Property property){
+
+        if(current_currency_is_eur){
+            double dollar_rate = propertyRepository.get_dollar_rate();
+            double usd_price = property.propertyStatue.price * dollar_rate;
+            current_currency_is_eur = false;
+            Log.d("CAT", "----------> Convert was EUR (dollar rate:" + String.valueOf(dollar_rate) + ")");
+            return usd_price;
+        }else{
+            current_currency_is_eur = true;
+            Log.d("CAT", "----------> Convert was USD");
+            return property.propertyStatue.price;
+        }
+    }
 }

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

@@ -153,6 +153,7 @@
         android:layout_width="112dp"
         android:layout_height="42dp"
         android:text="Convert"
+        android:onClick="convert_currency"
         app:layout_constraintBottom_toTopOf="@+id/detailsPropertySurface"
         app:layout_constraintEnd_toEndOf="@+id/detailsPropertyNumberOfRooms"
         app:layout_constraintHorizontal_bias="0.355"