Add button to export sets as CSV - 2.6 🚀

Closes #203

SettingsPage.tsx

@@ -538,6 +538,26 @@ export default function SettingsPage() {
         </Button>
       ),
     },
+    {
+      name: "Export sets as CSV",
+      renderItem: (name: string) => (
+        <Button
+          style={{ alignSelf: "flex-start" }}
+          onPress={async () => {
+            const result = await check(
+              PERMISSIONS.ANDROID.WRITE_EXTERNAL_STORAGE
+            );
+            if (result === RESULTS.DENIED || result === RESULTS.BLOCKED) {
+              await request(PERMISSIONS.ANDROID.WRITE_EXTERNAL_STORAGE);
+            }
+            await NativeModules.BackupModule.exportToCSV();
+            toast("Exported sets as CSV.");
+          }}
+        >
+          {name}
+        </Button>
+      ),
+    },
     {
       name: "Import database",
       renderItem: (name: string) => (

android/app/build.gradle

@@ -85,8 +85,8 @@ android {
         applicationId "com.massive"
         minSdkVersion rootProject.ext.minSdkVersion
         targetSdkVersion rootProject.ext.targetSdkVersion
-        versionCode 36220
-        versionName "2.5"
+        versionCode 36221
+        versionName "2.6"
     }
     signingConfigs {
         release {
@@ -125,6 +125,7 @@ dependencies {
     implementation("com.facebook.react:react-android")
     implementation 'androidx.documentfile:documentfile:1.0.1'
     implementation 'androidx.constraintlayout:constraintlayout:2.1.3'
+    implementation 'com.opencsv:opencsv:5.5.2'
     implementation project(':react-native-sqlite-storage')
     implementation project(':react-native-vector-icons')
 

android/app/src/main/java/com/massive/BackupModule.kt

@@ -8,6 +8,7 @@ import android.os.Build
 import android.util.Log
 import androidx.annotation.RequiresApi
 import androidx.documentfile.provider.DocumentFile
+import com.facebook.react.bridge.Promise
 import com.facebook.react.bridge.ReactApplicationContext
 import com.facebook.react.bridge.ReactContextBaseJavaModule
 import com.facebook.react.bridge.ReactMethod
@@ -73,6 +74,18 @@ class BackupModule constructor(context: ReactApplicationContext?) :
         alarmMgr.cancel(pendingIntent)
     }
 
+    @ReactMethod()
+    fun exportToCSV(promise: Promise) {
+        try {
+            val db = DatabaseHelper(reactApplicationContext)
+            db.exportToCSV()
+            promise.resolve("Export successful!")
+        }
+        catch (e: Exception) {
+            promise.reject("ERROR", e)
+        }
+    }
+
     init {
         reactApplicationContext.registerReceiver(copyReceiver, IntentFilter(COPY_BROADCAST))
     }

android/app/src/main/java/com/massive/DatabaseHelper.kt

@@ -3,6 +3,10 @@ package com.massive
 import android.content.Context
 import android.database.sqlite.SQLiteDatabase
 import android.database.sqlite.SQLiteOpenHelper
+import android.os.Environment
+import com.opencsv.CSVWriter
+import java.io.File
+import java.io.FileWriter
 
 class DatabaseHelper(context: Context) :
     SQLiteOpenHelper(context, DATABASE_NAME, null, DATABASE_VERSION) {
@@ -11,6 +15,32 @@ class DatabaseHelper(context: Context) :
         private const val DATABASE_VERSION = 1
     }
 
+    fun exportToCSV() {
+        val exportDir = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOWNLOADS)
+        if (!exportDir.exists()) {
+            exportDir.mkdirs()
+        }
+
+        val file = File(exportDir, "gym_sets.csv")
+        file.createNewFile()
+
+        val csvWrite = CSVWriter(FileWriter(file))
+        val db = this.readableDatabase
+        val cursor = db.rawQuery("SELECT * FROM sets", null)
+        csvWrite.writeNext(cursor.columnNames)
+
+        while(cursor.moveToNext()) {
+            val arrStr = arrayOfNulls<String>(cursor.columnCount)
+            for(i in 0 until cursor.columnCount) {
+                arrStr[i] = cursor.getString(i)
+            }
+            csvWrite.writeNext(arrStr)
+        }
+
+        csvWrite.close()
+        cursor.close()
+    }
+
     override fun onCreate(db: SQLiteDatabase) {
     }
 

package.json

@@ -1,6 +1,6 @@
 {
   "name": "massive",
-  "version": "2.5",
+  "version": "2.6",
   "private": true,
   "license": "GPL-3.0-only",
   "scripts": {