384 lines
11 KiB
C++
384 lines
11 KiB
C++
#include "EventAccessors.h"
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#include <type_traits>
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namespace {
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struct nonesuch
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{
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~nonesuch() = delete;
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nonesuch(nonesuch const &) = delete;
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void operator=(nonesuch const &) = delete;
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};
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namespace detail {
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template<class Default, class AlwaysVoid, template<class...> class Op, class... Args>
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struct detector
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{
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using value_t = std::false_type;
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using type = Default;
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};
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template<class Default, template<class...> class Op, class... Args>
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struct detector<Default, std::void_t<Op<Args...>>, Op, Args...>
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{
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using value_t = std::true_type;
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using type = Op<Args...>;
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};
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} // namespace detail
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template<template<class...> class Op, class... Args>
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using is_detected = typename detail::detector<nonesuch, void, Op, Args...>::value_t;
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struct EventMsgType
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{
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template<class E>
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using msgtype_t = decltype(E::msgtype);
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template<class T>
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mtx::events::MessageType operator()(const mtx::events::Event<T> &e)
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{
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if constexpr (is_detected<msgtype_t, T>::value)
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return mtx::events::getMessageType(e.content.msgtype);
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return mtx::events::MessageType::Unknown;
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}
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};
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struct EventRoomName
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{
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template<class T>
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std::string operator()(const T &e)
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{
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if constexpr (std::is_same_v<mtx::events::StateEvent<mtx::events::state::Name>, T>)
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return e.content.name;
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return "";
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}
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};
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struct EventRoomTopic
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{
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template<class T>
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std::string operator()(const T &e)
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{
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if constexpr (std::is_same_v<mtx::events::StateEvent<mtx::events::state::Topic>, T>)
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return e.content.topic;
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return "";
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}
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};
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struct EventBody
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{
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template<class C>
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using body_t = decltype(C::body);
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template<class T>
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std::string operator()(const mtx::events::Event<T> &e)
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{
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if constexpr (is_detected<body_t, T>::value)
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return e.content.body;
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return "";
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}
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};
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struct EventFormattedBody
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{
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template<class C>
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using formatted_body_t = decltype(C::formatted_body);
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template<class T>
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std::string operator()(const mtx::events::RoomEvent<T> &e)
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{
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if constexpr (is_detected<formatted_body_t, T>::value)
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return e.content.formatted_body;
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return "";
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}
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};
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struct EventFile
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{
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template<class Content>
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using file_t = decltype(Content::file);
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template<class T>
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std::optional<mtx::crypto::EncryptedFile> operator()(const mtx::events::Event<T> &e)
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{
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if constexpr (is_detected<file_t, T>::value)
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return e.content.file;
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return std::nullopt;
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}
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};
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struct EventUrl
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{
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template<class Content>
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using url_t = decltype(Content::url);
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template<class T>
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std::string operator()(const mtx::events::Event<T> &e)
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{
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if constexpr (is_detected<url_t, T>::value) {
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if (auto file = EventFile{}(e))
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return file->url;
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return e.content.url;
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}
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return "";
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}
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};
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struct EventThumbnailUrl
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{
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template<class Content>
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using thumbnail_url_t = decltype(Content::info.thumbnail_url);
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template<class T>
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std::string operator()(const mtx::events::Event<T> &e)
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{
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if constexpr (is_detected<thumbnail_url_t, T>::value) {
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return e.content.info.thumbnail_url;
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}
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return "";
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}
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};
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struct EventFilename
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{
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template<class T>
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std::string operator()(const mtx::events::Event<T> &)
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{
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return "";
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}
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std::string operator()(const mtx::events::RoomEvent<mtx::events::msg::Audio> &e)
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{
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// body may be the original filename
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return e.content.body;
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}
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std::string operator()(const mtx::events::RoomEvent<mtx::events::msg::Video> &e)
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{
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// body may be the original filename
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return e.content.body;
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}
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std::string operator()(const mtx::events::RoomEvent<mtx::events::msg::Image> &e)
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{
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// body may be the original filename
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return e.content.body;
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}
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std::string operator()(const mtx::events::RoomEvent<mtx::events::msg::File> &e)
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{
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// body may be the original filename
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if (!e.content.filename.empty())
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return e.content.filename;
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return e.content.body;
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}
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};
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struct EventMimeType
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{
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template<class Content>
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using mimetype_t = decltype(Content::info.mimetype);
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template<class T>
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std::string operator()(const mtx::events::Event<T> &e)
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{
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if constexpr (is_detected<mimetype_t, T>::value) {
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return e.content.info.mimetype;
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}
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return "";
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}
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};
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struct EventFilesize
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{
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template<class Content>
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using filesize_t = decltype(Content::info.size);
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template<class T>
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int64_t operator()(const mtx::events::RoomEvent<T> &e)
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{
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if constexpr (is_detected<filesize_t, T>::value) {
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return e.content.info.size;
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}
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return 0;
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}
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};
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struct EventInReplyTo
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{
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template<class Content>
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using related_ev_id_t = decltype(Content::relates_to.in_reply_to.event_id);
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template<class T>
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std::string operator()(const mtx::events::Event<T> &e)
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{
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if constexpr (is_detected<related_ev_id_t, T>::value) {
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return e.content.relates_to.in_reply_to.event_id;
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}
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return "";
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}
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};
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struct EventTransactionId
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{
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template<class T>
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std::string operator()(const mtx::events::RoomEvent<T> &e)
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{
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return e.unsigned_data.transaction_id;
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}
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template<class T>
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std::string operator()(const mtx::events::Event<T> &e)
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{
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return e.unsigned_data.transaction_id;
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}
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};
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struct EventMediaHeight
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{
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template<class Content>
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using h_t = decltype(Content::info.h);
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template<class T>
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uint64_t operator()(const mtx::events::Event<T> &e)
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{
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if constexpr (is_detected<h_t, T>::value) {
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return e.content.info.h;
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}
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return -1;
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}
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};
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struct EventMediaWidth
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{
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template<class Content>
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using w_t = decltype(Content::info.w);
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template<class T>
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uint64_t operator()(const mtx::events::Event<T> &e)
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{
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if constexpr (is_detected<w_t, T>::value) {
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return e.content.info.w;
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}
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return -1;
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}
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};
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template<class T>
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double
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eventPropHeight(const mtx::events::RoomEvent<T> &e)
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{
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auto w = eventWidth(e);
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if (w == 0)
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w = 1;
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double prop = eventHeight(e) / (double)w;
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return prop > 0 ? prop : 1.;
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}
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}
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std::string
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mtx::accessors::event_id(const mtx::events::collections::TimelineEvents &event)
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{
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return std::visit([](const auto e) { return e.event_id; }, event);
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}
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std::string
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mtx::accessors::room_id(const mtx::events::collections::TimelineEvents &event)
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{
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return std::visit([](const auto e) { return e.room_id; }, event);
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}
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std::string
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mtx::accessors::sender(const mtx::events::collections::TimelineEvents &event)
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{
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return std::visit([](const auto e) { return e.sender; }, event);
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}
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QDateTime
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mtx::accessors::origin_server_ts(const mtx::events::collections::TimelineEvents &event)
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{
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return QDateTime::fromMSecsSinceEpoch(
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std::visit([](const auto e) { return e.origin_server_ts; }, event));
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}
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std::string
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mtx::accessors::filename(const mtx::events::collections::TimelineEvents &event)
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{
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return std::visit(EventFilename{}, event);
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}
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mtx::events::MessageType
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mtx::accessors::msg_type(const mtx::events::collections::TimelineEvents &event)
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{
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return std::visit(EventMsgType{}, event);
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}
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std::string
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mtx::accessors::room_name(const mtx::events::collections::TimelineEvents &event)
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{
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return std::visit(EventRoomName{}, event);
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}
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std::string
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mtx::accessors::room_topic(const mtx::events::collections::TimelineEvents &event)
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{
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return std::visit(EventRoomTopic{}, event);
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}
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std::string
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mtx::accessors::body(const mtx::events::collections::TimelineEvents &event)
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{
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return std::visit(EventBody{}, event);
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}
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std::string
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mtx::accessors::formatted_body(const mtx::events::collections::TimelineEvents &event)
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{
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return std::visit(EventFormattedBody{}, event);
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}
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QString
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mtx::accessors::formattedBodyWithFallback(const mtx::events::collections::TimelineEvents &event)
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{
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auto formatted = formatted_body(event);
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if (!formatted.empty())
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return QString::fromStdString(formatted);
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else
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return QString::fromStdString(body(event)).toHtmlEscaped().replace("\n", "<br>");
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}
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std::optional<mtx::crypto::EncryptedFile>
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mtx::accessors::file(const mtx::events::collections::TimelineEvents &event)
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{
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return std::visit(EventFile{}, event);
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}
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std::string
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mtx::accessors::url(const mtx::events::collections::TimelineEvents &event)
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{
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return std::visit(EventUrl{}, event);
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}
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std::string
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mtx::accessors::thumbnail_url(const mtx::events::collections::TimelineEvents &event)
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{
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return std::visit(EventThumbnailUrl{}, event);
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}
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std::string
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mtx::accessors::mimetype(const mtx::events::collections::TimelineEvents &event)
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{
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return std::visit(EventMimeType{}, event);
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}
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std::string
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mtx::accessors::in_reply_to_event(const mtx::events::collections::TimelineEvents &event)
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{
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return std::visit(EventInReplyTo{}, event);
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}
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std::string
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mtx::accessors::transaction_id(const mtx::events::collections::TimelineEvents &event)
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{
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return std::visit(EventTransactionId{}, event);
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}
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int64_t
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mtx::accessors::filesize(const mtx::events::collections::TimelineEvents &event)
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{
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return std::visit(EventFilesize{}, event);
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}
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uint64_t
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mtx::accessors::media_height(const mtx::events::collections::TimelineEvents &event)
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{
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return std::visit(EventMediaHeight{}, event);
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}
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uint64_t
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mtx::accessors::media_width(const mtx::events::collections::TimelineEvents &event)
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{
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return std::visit(EventMediaWidth{}, event);
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}
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