restored OUtputPinController

FlippR-Driver/networking/output/OutputRequestHandler.cpp

@@ -0,0 +1,260 @@
+//
+// Created by rhetenor on 3/6/19.
+//
+
+
+#include <Poco/Net/HTTPServerResponse.h>
+#include <Poco/Net/HTTPServerRequest.h>
+#include <Poco/Exception.h>
+
+#include <string>
+
+#include "OutputRequestHandler.h"
+
+namespace flippR_driver
+{
+namespace utility
+{
+using namespace Poco;
+using namespace Poco::Net;
+
+OutputRequestHandler::OutputRequestHandler(std::shared_ptr<output::OutputDriver> output_driver) :
+  output_driver(output_driver)
+  {}
+
+  /**
+   * Handles a REST request with a URI form of:
+   *
+   * address/{item_type}/[item_name]/[action]/[score]
+   *
+   * Where
+   * {item_type} is either solenoids, lamps, sounds, displays, or one of the two special events: activate and deactivate
+   * [item_name] is the string name of an item (optional if you want to get the list of all available items)
+   * [action] is the particular action for the item:
+   *    Solenoids: trigger
+   *    lamps: activate, deactivate, status
+   *    sounds: play
+   *    displays: write_score (for this is the additional optional attribute [score]
+   *
+   * @param request
+   * @param response
+   */
+void OutputRequestHandler::handleRequest(HTTPServerRequest &request,
+                                         HTTPServerResponse &response)
+{
+  auto path_segments = getPathSegments(URI(request.getURI()));
+
+  // fill up vector
+  for(int i = path_segments.size(); i < 4; i++)
+  {
+    path_segments.emplace_back("");
+  }
+
+  std::string item_type = path_segments.at(0);
+  std::string item_name = path_segments.at(1);
+  std::string action = path_segments.at(2);
+  std::string score = path_segments.at(3);
+
+  if(item_type == "deactivate")
+  {
+    this->output_driver->deactivate_displays();
+    this->output_driver->deactivate_all_lamps();
+    return;
+  }
+
+  if(item_type == "activate")
+  {
+    this->output_driver->activate_displays();
+    return;
+  }
+
+  response.setContentType("text/json");
+  response.setStatus(HTTPServerResponse::HTTP_OK);
+
+  try
+  {
+    boost::optional<Poco::JSON::Object> json_response = parseRequest(item_type, item_name, action, score);
+    if(json_response)
+    {
+      std::ostream& ostr = response.send();
+      json_response->stringify(ostr);
+    }
+  }
+  catch(const NotFoundException &e)
+  {
+    response.setStatusAndReason(HTTPServerResponse::HTTP_NOT_FOUND, e.displayText());
+  }
+  catch(const Poco::InvalidArgumentException &e)
+  {
+    response.setStatusAndReason(HTTPServerResponse::HTTP_BAD_REQUEST, e.displayText());
+  }
+}
+
+boost::optional<Poco::JSON::Object> OutputRequestHandler::parseRequest(const std::string& item_type, const std::string& item_name, const std::string& action, const std::string& score)
+{
+  if(item_type == "solenoids")
+  {
+    return parseSolenoid(item_name, action);
+  }
+  else if(item_type == "lamps")
+  {
+    return parseLamp(item_name, action);
+  }
+  else if(item_type == "sounds")
+  {
+    return parseSound(item_name, action);
+  }
+  else if(item_type == "displays")
+  {
+    return parseDisplay(item_name, action, score);
+  }
+  else
+  {
+    throw new Poco::NotFoundException("No item type called " + item_type);
+  }
+}
+
+boost::optional<Poco::JSON::Object> OutputRequestHandler::parseSolenoid(const std::string& item_name, const std::string& action)
+{
+  if(item_name == "")
+  {
+    Poco::JSON::Object response;
+    response.set("solenoids", this->output_driver->get_solenoids());
+    return response;
+  }
+
+  auto opt_solenoid = this->output_driver->get_solenoid(item_name);
+
+  if(!opt_solenoid)
+  {
+    throw new Poco::NotFoundException("No solenoid with name \"" + item_name + "\"!");
+  }
+
+  auto solenoid = opt_solenoid->get();
+
+  if(action == "trigger")
+  {
+    solenoid->trigger();
+  }
+  else
+  {
+    throw new Poco::NotFoundException("No action with name \"" + action + "\" on solenoids!");
+  }
+
+  return {};
+}
+
+boost::optional<Poco::JSON::Object> OutputRequestHandler::parseLamp(const std::string& item_name, const std::string& action)
+{
+  if(item_name == "")
+  {
+    Poco::JSON::Object response;
+    response.set("lamps", this->output_driver->get_lamps());
+    return response;
+  }
+
+  auto opt_lamp = this->output_driver->get_lamp(item_name);
+
+  if(!opt_lamp)
+  {
+    throw new Poco::NotFoundException("No lamp with name \"" + item_name + "\"!");
+  }
+
+  auto lamp = opt_lamp->get();
+
+  if(action == "activate")
+  {
+    lamp->activate();
+  }
+  else if(action == "deactivate")
+  {
+    lamp->deactivate();
+  }
+  else
+  {
+    throw new Poco::NotFoundException("No action with name \"" + action + "\" on lamps!");
+  }
+
+  return {};
+}
+
+boost::optional<Poco::JSON::Object> OutputRequestHandler::parseSound(const std::string& item_name, const std::string& action)
+{
+  if(item_name == "")
+  {
+    Poco::JSON::Object response;
+    response.set("sounds", this->output_driver->get_sounds());
+    return response;
+  }
+
+  auto opt_sound = this->output_driver->get_sound(item_name);
+
+  if(!opt_sound)
+  {
+    throw new Poco::NotFoundException("No sound with name \"" + item_name + "\"!");
+  }
+
+  auto sound = opt_sound->get();
+
+  if(action == "play")
+  {
+    sound->play();
+  }
+  else
+  {
+    throw new Poco::NotFoundException("No action with name \"" + action + "\" on sounds!");
+  }
+
+  return {};
+}
+
+boost::optional<Poco::JSON::Object> OutputRequestHandler::parseDisplay(const std::string& item_name, const std::string& action, const std::string& score)
+{
+  if(item_name == "")
+  {
+    Poco::JSON::Object response;
+    response.set("displays", this->output_driver->get_displays());
+    return response;
+  }
+
+  uint8_t display_number = std::stoi(item_name);
+  auto opt_display = this->output_driver->get_display(display_number);
+
+  if(!opt_display)
+  {
+    throw new Poco::NotFoundException("No display with number \"" + item_name + "\"!");
+  }
+
+  auto display = opt_display->get();
+
+
+  if(action == "write_score")
+  {
+    try
+    {
+        unsigned int numerical_score = std::stoi(score);
+        display->write_score(numerical_score);
+    }
+    catch(std::invalid_argument &e)
+    {
+      throw new Poco::InvalidArgumentException("Could not convert " + score + " to a number!\n" + e.what());
+    }
+  }
+  else
+  {
+    throw new Poco::NotFoundException("No Action with name \"" + action + "\" on sounds!");
+  }
+
+  return {};
+}
+
+std::vector<std::string> OutputRequestHandler::getPathSegments(Poco::URI uri)
+{
+  std::vector<std::string> path_segments;
+  uri.getPathSegments(path_segments);
+  return path_segments;
+}
+
+}
+}
+