Csv export

app/build.gradle

@@ -44,6 +44,7 @@ dependencies {
     testImplementation 'junit:junit:4.+'
     androidTestImplementation 'androidx.test.ext:junit:1.1.2'
     androidTestImplementation 'androidx.test.espresso:espresso-core:3.3.0'
+    implementation 'com.opencsv:opencsv:5.4'
 
     // Utility methods
     implementation 'com.google.code.gson:gson:2.8.6'

app/src/main/AndroidManifest.xml

@@ -2,6 +2,8 @@
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
     package="com.trueproof.trueproof">
 
+    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
+    <!--    requests write to storage permission for csv export-->
     <application
         android:name=".TrueProofApplication"
         android:allowBackup="true"

app/src/main/java/com/trueproof/trueproof/TrueProofApplication.java

@@ -20,7 +20,6 @@ public class TrueProofApplication extends Application {
     @Override
     public void onCreate() {
         super.onCreate();
-
         try {
             Amplify.addPlugin(new AWSApiPlugin());
             Amplify.addPlugin(new AWSCognitoAuthPlugin());

app/src/main/java/com/trueproof/trueproof/activities/BatchDetailActivity.java

@@ -1,8 +1,10 @@
 package com.trueproof.trueproof.activities;
 
 import android.content.Intent;
+import android.net.Uri;
 import android.os.Build;
 import android.os.Bundle;
+import android.os.Environment;
 import android.util.Log;
 import android.view.Menu;
 import android.view.MenuItem;
@@ -33,6 +35,10 @@
 import com.trueproof.trueproof.utils.UserSettings;
 import com.trueproof.trueproof.viewmodels.BatchDetailViewModel;
 
+import java.io.File;
+import java.io.FileNotFoundException;
+import java.io.FileOutputStream;
+import java.io.IOException;
 import java.util.ArrayList;
 import java.util.List;
 
@@ -85,6 +91,7 @@ protected void onCreate(Bundle savedInstanceState) {
         observeLiveData();
         setUpMeasurementList();
         setUpSpinner();
+
     }
 
     @Override
@@ -175,6 +182,7 @@ private void onClickUpdateButton() {
                 .status(status)
                 .build();
         viewModel.updateBatch(newBatch);
+
     }
 
     private void populateTextFields(Batch batch) {
@@ -190,6 +198,40 @@ private void populateTextFields(Batch batch) {
             }
         }
     }
+    public void sendAsEmail (Batch batch){
+        String batchHeader = "\"Type\",\"Number\", \"Identifier\", \"Created At\", \"Updated At\"";
+        String batchInfo = "\"" + batch.getType() + "\",\"" + batch.getBatchNumber() +"\",\"" +
+                batch.getBatchIdentifier()+ "\"";
+//        +"\",\"" + batch.getCreatedAt().toString()+"\",\"" + batch.getUpdatedAt().toString()
+        String combinedString = batchHeader + "\n" + batchInfo;
+        File file = null;
+        File root = Environment.getExternalStorageDirectory();
+        if (root.canWrite()){
+            File directory = new File (root.getAbsolutePath() + "/BatchData");
+            directory.mkdirs();
+            file = new File (directory, "Data.csv");
+            FileOutputStream out = null;
+            try{
+                out = new FileOutputStream(file);
+            } catch (FileNotFoundException e) {
+                e.printStackTrace();
+            }
+            try{
+                out.write(combinedString.getBytes());
+                out.close();
+            } catch (IOException e) {
+                e.printStackTrace();
+            }
+
+        }
+        Uri uri;
+        uri = Uri.fromFile(file);
+        Intent send = new Intent(Intent.ACTION_SEND);
+        send.putExtra(Intent.EXTRA_SUBJECT, batch.getBatchIdentifier());
+        send.putExtra(Intent.EXTRA_STREAM, uri);
+        send.setType("text/html");
+        startActivity(send);
+    }
 
     @Override
     public boolean onCreateOptionsMenu(Menu menu) {

app/src/main/java/com/trueproof/trueproof/utils/BatchToCsv.java

@@ -0,0 +1,51 @@
+package com.trueproof.trueproof.utils;
+
+import android.content.Intent;
+import android.net.Uri;
+import android.os.Environment;
+
+import com.amplifyframework.datastore.generated.model.Batch;
+import com.amplifyframework.datastore.generated.model.Measurement;
+import com.opencsv.CSVWriter;
+
+import java.io.File;
+import java.io.FileNotFoundException;
+import java.io.FileOutputStream;
+import java.io.FileWriter;
+import java.io.IOException;
+import java.util.ArrayList;
+import java.util.List;
+
+public class BatchToCsv {
+
+    String baseDir = android.os.Environment.getExternalStorageDirectory().getAbsolutePath();
+    CSVWriter csvWriter;
+
+    public BatchToCsv() throws IOException {
+    }
+
+    public void convertToCsv (Batch batch) throws IOException {
+        String path = baseDir + File.separator + "BatchData.csv";
+        File f = new File(path);
+        if (f.exists()&& f.isDirectory()){
+            csvWriter= new CSVWriter(new FileWriter(path, true));
+        } else{
+            csvWriter= new CSVWriter(new FileWriter(path));
+        }
+
+//        still need to use intent to save file or email
+        List<Measurement> batchMeasurements = batch.getMeasurements();
+        csvWriter.writeNext(new String[] {"Type", "Number", "Identifier", "Created At", "Updated At"});
+        csvWriter.writeNext(new String [] {batch.getType(), String.valueOf(batch.getBatchNumber()), batch.getBatchIdentifier(), batch.getCreatedAt().toString(), batch.getUpdatedAt().toString()});
+        csvWriter.writeNext(new String [] {""});
+        csvWriter.writeNext(new String [] {"True Proof", "Temperature", "Temp. Correction", "Hydrometer", "Hydro Correction", "Created At"});
+        for (Measurement m : batchMeasurements
+             ) {
+            csvWriter.writeNext(new String [] {String.valueOf(m.getTrueProof()), String.valueOf(m.getTemperature()),
+                    String.valueOf(m.getTemperatureCorrection()), String.valueOf(m.getHydrometer()), String.valueOf(m.getHydrometerCorrection())
+                    , m.getCreatedAt().toString()});
+        }
+        csvWriter.close();
+    }
+
+}