Channel management and channel creation / editing

app/src/main/java/io/lbry/browser/tasks/UploadImageTask.java

@@ -0,0 +1,101 @@
+package io.lbry.browser.tasks;
+
+import android.os.AsyncTask;
+import android.view.View;
+
+import org.json.JSONException;
+import org.json.JSONObject;
+
+import java.io.IOException;
+import java.util.Random;
+
+import java.io.File;
+
+import io.lbry.browser.exceptions.LbryResponseException;
+import io.lbry.browser.utils.Helper;
+import okhttp3.MediaType;
+import okhttp3.MultipartBody;
+import okhttp3.OkHttpClient;
+import okhttp3.Request;
+import okhttp3.RequestBody;
+import okhttp3.Response;
+
+public class UploadImageTask extends AsyncTask<Void, Void, String> {
+    private String filePath;
+    private View progressView;
+    private UploadThumbnailHandler handler;
+    private Exception error;
+
+    public UploadImageTask(String filePath, View progressView, UploadThumbnailHandler handler) {
+        this.filePath = filePath;
+        this.progressView = progressView;
+        this.handler = handler;
+    }
+
+    protected void onPreExecute() {
+        Helper.setViewVisibility(progressView, View.VISIBLE);
+    }
+    protected String doInBackground(Void... params) {
+        String thumbnailUrl = null;
+        try {
+            File file = new File(filePath);
+            String fileName = file.getName();
+            int dotIndex = fileName.lastIndexOf('.');
+            String extension = "jpg";
+            if (dotIndex > -1) {
+                extension = fileName.substring(dotIndex + 1);
+            }
+            String fileType = String.format("image/%s", extension);
+            RequestBody body = new MultipartBody.Builder().setType(MultipartBody.FORM).
+                    addFormDataPart("name", makeid()).
+                    addFormDataPart("file", fileName, RequestBody.create(file, MediaType.parse(fileType))).
+                    build();
+            Request request = new Request.Builder().url("https://spee.ch/api/claim/publish").post(body).build();
+            OkHttpClient client = new OkHttpClient();
+            Response response = client.newCall(request).execute();
+            JSONObject json = new JSONObject(response.body().string());
+            if (json.has("success")) {
+                JSONObject data = json.getJSONObject("data");
+                String url = Helper.getJSONString("url", null, data);
+                if (Helper.isNullOrEmpty(url)) {
+                    throw new LbryResponseException("Invalid thumbnail url returned after upload.");
+                }
+
+                thumbnailUrl = String.format("%s.%s", url, extension);
+            } else if (json.has("error")) {
+                JSONObject error = json.getJSONObject("error");
+                String message = Helper.getJSONString("message", null, error);
+                throw new LbryResponseException(Helper.isNullOrEmpty(message) ? "The image failed to upload." : message);
+            }
+        } catch (IOException | JSONException | LbryResponseException ex) {
+            error = ex;
+        }
+
+        return thumbnailUrl;
+    }
+    protected void onPostExecute(String thumbnailUrl) {
+        Helper.setViewVisibility(progressView, View.GONE);
+        if (handler != null) {
+            if (!Helper.isNullOrEmpty(thumbnailUrl)) {
+                handler.onSuccess(thumbnailUrl);
+            } else {
+                handler.onError(error);
+            }
+        }
+    }
+
+    private static String makeid() {
+        Random random = new Random();
+        String chars = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789";
+        StringBuilder id = new StringBuilder();
+        for (int i = 0; i < 24; i++) {
+            id.append(chars.charAt(random.nextInt(chars.length())));
+        }
+        return id.toString();
+    }
+
+    public interface UploadThumbnailHandler {
+        void onSuccess(String url);
+        void onError(Exception error);
+    }
+}