public static APINodeList parseResponse()

in src/main/java/com/facebook/ads/sdk/SystemUser.java [158:262]
98 lines of code
30 McCabe index (conditional complexity)

  public static APINodeList<SystemUser> parseResponse(String json, APIContext context, APIRequest request, String header) throws MalformedResponseException {
    APINodeList<SystemUser> systemUsers = new APINodeList<SystemUser>(request, json, header);
    JsonArray arr;
    JsonObject obj;
    JsonParser parser = new JsonParser();
    Exception exception = null;
    try{
      JsonElement result = parser.parse(json);
      if (result.isJsonArray()) {
        // First, check if it's a pure JSON Array
        arr = result.getAsJsonArray();
        for (int i = 0; i < arr.size(); i++) {
          systemUsers.add(loadJSON(arr.get(i).getAsJsonObject().toString(), context, header));
        };
        return systemUsers;
      } else if (result.isJsonObject()) {
        obj = result.getAsJsonObject();
        if (obj.has("data")) {
          if (obj.has("paging")) {
            JsonObject paging = obj.get("paging").getAsJsonObject();
            if (paging.has("cursors")) {
                JsonObject cursors = paging.get("cursors").getAsJsonObject();
                String before = cursors.has("before") ? cursors.get("before").getAsString() : null;
                String after = cursors.has("after") ? cursors.get("after").getAsString() : null;
                systemUsers.setCursors(before, after);
            }
            String previous = paging.has("previous") ? paging.get("previous").getAsString() : null;
            String next = paging.has("next") ? paging.get("next").getAsString() : null;
            systemUsers.setPaging(previous, next);
            if (context.hasAppSecret()) {
              systemUsers.setAppSecret(context.getAppSecretProof());
            }
          }
          if (obj.get("data").isJsonArray()) {
            // Second, check if it's a JSON array with "data"
            arr = obj.get("data").getAsJsonArray();
            for (int i = 0; i < arr.size(); i++) {
              systemUsers.add(loadJSON(arr.get(i).getAsJsonObject().toString(), context, header));
            };
          } else if (obj.get("data").isJsonObject()) {
            // Third, check if it's a JSON object with "data"
            obj = obj.get("data").getAsJsonObject();
            boolean isRedownload = false;
            for (String s : new String[]{"campaigns", "adsets", "ads"}) {
              if (obj.has(s)) {
                isRedownload = true;
                obj = obj.getAsJsonObject(s);
                for (Map.Entry<String, JsonElement> entry : obj.entrySet()) {
                  systemUsers.add(loadJSON(entry.getValue().toString(), context, header));
                }
                break;
              }
            }
            if (!isRedownload) {
              systemUsers.add(loadJSON(obj.toString(), context, header));
            }
          }
          return systemUsers;
        } else if (obj.has("images")) {
          // Fourth, check if it's a map of image objects
          obj = obj.get("images").getAsJsonObject();
          for (Map.Entry<String, JsonElement> entry : obj.entrySet()) {
              systemUsers.add(loadJSON(entry.getValue().toString(), context, header));
          }
          return systemUsers;
        } else {
          // Fifth, check if it's an array of objects indexed by id
          boolean isIdIndexedArray = true;
          for (Map.Entry entry : obj.entrySet()) {
            String key = (String) entry.getKey();
            if (key.equals("__fb_trace_id__")) {
              continue;
            }
            JsonElement value = (JsonElement) entry.getValue();
            if (
              value != null &&
              value.isJsonObject() &&
              value.getAsJsonObject().has("id") &&
              value.getAsJsonObject().get("id") != null &&
              value.getAsJsonObject().get("id").getAsString().equals(key)
            ) {
              systemUsers.add(loadJSON(value.toString(), context, header));
            } else {
              isIdIndexedArray = false;
              break;
            }
          }
          if (isIdIndexedArray) {
            return systemUsers;
          }

          // Sixth, check if it's pure JsonObject
          systemUsers.clear();
          systemUsers.add(loadJSON(json, context, header));
          return systemUsers;
        }
      }
    } catch (Exception e) {
      exception = e;
    }
    throw new MalformedResponseException(
      "Invalid response string: " + json,
      exception
    );
  }