Add java side of http syncing

2026-06-09 00:37:59 -06:00 · 2025-05-25 18:48:02 -06:00
parent 5d727cf359
commit e278bc10a1
10 changed files with 726 additions and 13 deletions
@@ -0,0 +1,168 @@
+package com.ridgebotics.ridgescout.utility;
+
+import android.os.AsyncTask;
+import java.io.*;
+import java.net.HttpURLConnection;
+import java.net.URL;
+
+public class HttpGetFile extends AsyncTask<Void, Integer, File> {
+
+    public interface DownloadCallback {
+        void onResult(String error);
+    }
+
+    private String downloadUrl;
+    private File destinationFile;
+    private DownloadCallback callback;
+    private String errorMessage;
+    public HttpGetFile(String downloadUrl, File destinationFile, DownloadCallback callback) {
+        this.downloadUrl = downloadUrl;
+        this.destinationFile = destinationFile;
+        this.callback = callback;
+    }
+
+    @Override
+    protected File doInBackground(Void... voids) {
+        HttpURLConnection connection = null;
+        InputStream inputStream = null;
+        FileOutputStream outputStream = null;
+
+        try {
+            URL url = new URL(downloadUrl);
+            connection = (HttpURLConnection) url.openConnection();
+
+            // Configure connection for GET request
+            connection.setRequestMethod("GET");
+            connection.setDoInput(true);
+            connection.setConnectTimeout(30000); // 30 seconds
+            connection.setReadTimeout(60000); // 60 seconds
+
+            connection.connect();
+
+            // Check response code
+            int responseCode = connection.getResponseCode();
+            if (responseCode < 200 || responseCode >= 300) {
+                String errorResponse = readErrorResponse(connection);
+                errorMessage = "Download failed. Response code: " + responseCode +
+                        (errorResponse != null ? ". Error: " + errorResponse : "");
+                return null;
+            }
+
+            // Get file size for progress tracking
+            long fileSize = connection.getContentLengthLong();
+            if (fileSize == -1) {
+                fileSize = connection.getContentLength(); // fallback for older API
+            }
+
+            inputStream = connection.getInputStream();
+
+            // Create destination file and directories if needed
+            if (destinationFile.getParentFile() != null && !destinationFile.getParentFile().exists()) {
+                if (!destinationFile.getParentFile().mkdirs()) {
+                    errorMessage = "Failed to create destination directory: " + destinationFile.getParentFile().getAbsolutePath();
+                    return null;
+                }
+            }
+
+            outputStream = new FileOutputStream(destinationFile);
+
+            byte[] buffer = new byte[8192];
+            long downloadedBytes = 0;
+            int bytesRead;
+
+            while ((bytesRead = inputStream.read(buffer)) != -1) {
+                if (isCancelled()) {
+                    deletePartialFile();
+                    return null;
+                }
+
+                outputStream.write(buffer, 0, bytesRead);
+                downloadedBytes += bytesRead;
+
+                // Update progress if file size is known
+                if (fileSize > 0) {
+                    int progress = (int) ((downloadedBytes * 100) / fileSize);
+                    publishProgress(progress);
+                }
+            }
+
+            outputStream.flush();
+//            Log.d(TAG, "Download successful. File saved to: " + destinationFile.getAbsolutePath());
+            return destinationFile;
+
+        } catch (Exception e) {
+            AlertManager.error(e);
+            errorMessage = "Download error: " + e.getMessage();
+//            Log.e(TAG, errorMessage, e);
+            deletePartialFile();
+            return null;
+        } finally {
+            closeResources(inputStream, outputStream, connection);
+        }
+    }
+
+    @Override
+    protected void onPostExecute(File result) {
+        if (callback != null) {
+            callback.onResult(errorMessage);
+        }
+    }
+
+    @Override
+    protected void onCancelled() {
+        deletePartialFile();
+        if (callback != null) {
+            callback.onResult("Download cancelled");
+        }
+    }
+
+    private String readErrorResponse(HttpURLConnection connection) {
+        try {
+            InputStream errorStream = connection.getErrorStream();
+            if (errorStream != null) {
+                BufferedReader reader = new BufferedReader(new InputStreamReader(errorStream));
+                StringBuilder response = new StringBuilder();
+                String line;
+                while ((line = reader.readLine()) != null) {
+                    response.append(line);
+                }
+                reader.close();
+                return response.toString();
+            }
+        } catch (IOException e) {
+            AlertManager.error(e);
+//            Log.e(TAG, "Error reading error response", e);
+        }
+        return null;
+    }
+
+    private void deletePartialFile() {
+        if (destinationFile != null && destinationFile.exists()) {
+            if (destinationFile.delete()) {
+//                Log.d(TAG, "Partial download file deleted");
+            } else {
+//                Log.w(TAG, "Failed to delete partial download file");
+            }
+        }
+    }
+
+    private void closeResources(InputStream inputStream, OutputStream outputStream, HttpURLConnection connection) {
+        try {
+            if (inputStream != null) inputStream.close();
+        } catch (IOException e) {
+            AlertManager.error(e);
+//            Log.e(TAG, "Error closing input stream", e);
+        }
+
+        try {
+            if (outputStream != null) outputStream.close();
+        } catch (IOException e) {
+            AlertManager.error(e);
+//            Log.e(TAG, "Error closing output stream", e);
+        }
+
+        if (connection != null) {
+            connection.disconnect();
+        }
+    }
+}