6 files changed, 185 insertions, 1 deletions

@@ -10,7 +10,7 @@ include_directories(vendor/liboauthcpp/include)
 add_subdirectory(vendor/curlcpp)
 include_directories(${CURLCPP_SOURCE_DIR}/include)
 
-add_library(twitter++ src/client.cpp src/auth.cpp src/tweet.cpp src/codes.cpp src/notification.cpp src/direct_message.cpp src/list.cpp src/user.cpp)
+add_library(twitter++ src/client.cpp src/auth.cpp src/tweet.cpp src/codes.cpp src/notification.cpp src/direct_message.cpp src/list.cpp src/user.cpp src/configuration.cpp)
 set_property(TARGET twitter++ PROPERTY CXX_STANDARD 11)
 set_property(TARGET twitter++ PROPERTY CXX_STANDARD_REQUIRED ON)
 target_link_libraries(twitter++ oauthcpp curlcpp curl pthread)
@@ -321,6 +321,22 @@ namespace twitter {
     return _current_user;
   }
   
+  configuration client::getConfiguration()
+  {
+    if (!_configuration || (difftime(time(NULL), _last_configuration_update) > 60*60*24))
+    {
+      long response_code;
+      std::string response_data;
+      if (performGet("https://api.twitter.com/1.1/help/configuration.json", response_code, response_data))
+      {
+        _configuration = configuration(response_data);
+        _last_configuration_update = time(NULL);
+      }
+    }
+    
+    return _configuration;
+  }
+  
   response client::getFriends(std::set<user_id>& _ret)
   {
     if (!_current_user)
@@ -11,6 +11,7 @@
 #include <set>
 #include <ctime>
 #include <chrono>
+#include "configuration.h"
 
 namespace OAuth {
   class Consumer;
@@ -81,6 +82,8 @@ namespace twitter {
       
       const user& getUser() const;
       
+      configuration getConfiguration();
+      
       // NOTE: stream setting function calls will fail silently when stream is running
       void setUserStreamNotifyCallback(stream::notify_callback callback);
       void setUserStreamReceiveAllReplies(bool _arg);
@@ -99,6 +102,9 @@ namespace twitter {
       user _current_user;
       stream _user_stream{*this};
       
+      configuration _configuration;
+      time_t _last_configuration_update;
+      
       bool performGet(std::string url, long& response_code, std::string& result);
       bool performPost(std::string url, std::string dataStr, long& response_code, std::string& result);
       bool performMultiPost(std::string url, const curl_httppost* fields, long& response_code, std::string& result);
@@ -0,0 +1,109 @@
+#include "configuration.h"
+#include <json.hpp>
+#include <cassert>
+
+using nlohmann::json;
+
+namespace twitter {
+  
+  configuration::configuration()
+  {
+    _valid = false;
+  }
+  
+  configuration::configuration(std::string data)
+  {
+    _valid = true;
+    
+    auto _data = json::parse(data);
+    
+    _characters_reserved_per_media = _data.at("characters_reserved_per_media");
+    _dm_text_character_limit = _data.at("dm_text_character_limit");
+    _max_media_per_upload = _data.at("max_media_per_upload");
+    _photo_size_limit = _data.at("photo_size_limit");
+    _short_url_length = _data.at("short_url_length");
+    _short_https_url_length = _data.at("short_url_length_https");
+    
+    for (json::iterator sizedata = _data.at("photo_sizes").begin(); sizedata != _data.at("photo_sizes").end(); ++sizedata)
+    {
+      photosize size;
+      size.height = sizedata.value().at("h");
+      size.width = sizedata.value().at("w");
+      if (sizedata.value().at("resize") == "fit")
+      {
+        size.resize = resizetype::fit;
+      } else {
+        size.resize = resizetype::crop;
+      }
+      
+      _photo_sizes[sizedata.key()] = size;
+    }
+    
+    for (auto path : _data.at("non_username_paths"))
+    {
+      _non_username_paths.insert(path.get<std::string>());
+    }
+  }
+  
+  size_t configuration::getCharactersReservedPerMedia() const
+  {
+    assert(_valid);
+    
+    return _characters_reserved_per_media;
+  }
+  
+  size_t configuration::getDirectMessageCharacterLimit() const
+  {
+    assert(_valid);
+    
+    return _dm_text_character_limit;
+  }
+  
+  size_t configuration::getMaxMediaPerUpload() const
+  {
+    assert(_valid);
+    
+    return _max_media_per_upload;
+  }
+  
+  size_t configuration::getPhotoSizeLimit() const
+  {
+    assert(_valid);
+    
+    return _photo_size_limit;
+  }
+  
+  std::map<std::string, configuration::photosize> configuration::getPhotoSizes() const
+  {
+    assert(_valid);
+    
+    return _photo_sizes;
+  }
+  
+  size_t configuration::getShortUrlLength() const
+  {
+    assert(_valid);
+    
+    return _short_url_length;
+  }
+  
+  size_t configuration::getShortHttpsUrlLength() const
+  {
+    assert(_valid);
+    
+    return _short_https_url_length;
+  }
+  
+  std::set<std::string> configuration::getNonUsernamePaths() const
+  {
+    assert(_valid);
+    
+    return _non_username_paths;
+  }
+  
+  configuration::operator bool() const
+  {
+    return _valid;
+  }
+  
+};
@@ -0,0 +1,52 @@
+#ifndef CONFIGURATION_H_A7164D18
+#define CONFIGURATION_H_A7164D18
+
+#include <map>
+#include <string>
+#include <set>
+
+namespace twitter {
+  
+  class configuration {
+    public:
+      enum class resizetype {
+        fit,
+        crop
+      };
+      
+      struct photosize {
+        size_t height;
+        size_t width;
+        resizetype resize;
+      };
+      
+      configuration();
+      configuration(std::string data);
+      
+      size_t getCharactersReservedPerMedia() const;
+      size_t getDirectMessageCharacterLimit() const;
+      size_t getMaxMediaPerUpload() const;
+      size_t getPhotoSizeLimit() const;
+      std::map<std::string, photosize> getPhotoSizes() const;
+      size_t getShortUrlLength() const;
+      size_t getShortHttpsUrlLength() const;
+      std::set<std::string> getNonUsernamePaths() const;
+      
+      operator bool() const;
+      
+    private:
+      bool _valid = false;
+      
+      size_t _characters_reserved_per_media;
+      size_t _dm_text_character_limit;
+      size_t _max_media_per_upload;
+      size_t _photo_size_limit;
+      std::map<std::string, photosize> _photo_sizes;
+      size_t _short_url_length;
+      size_t _short_https_url_length;
+      std::set<std::string> _non_username_paths;
+  };
+  
+};
+
+#endif /* end of include guard: CONFIGURATION_H_A7164D18 */
@@ -16,5 +16,6 @@ namespace twitter {
 #include "notification.h"
 #include "list.h"
 #include "direct_message.h"
+#include "configuration.h"
 
 #endif /* end of include guard: TWITTER_H_AC7A7666 */