mastorss/src/mastoapi.cpp

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/* This file is part of mastorss.
* Copyright © 2019 tastytea <tastytea@tastytea.de>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, version 3.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "exceptions.hpp"
#include "mastoapi.hpp"
#include <boost/log/trivial.hpp>
#include <string>
#include <string_view>
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namespace mastorss
{
using std::string;
using std::string_view;
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MastoAPI::MastoAPI(const ProfileData &data)
: _profile{data}
, _masto{_profile.instance, _profile.access_token}
{
}
void MastoAPI::post_item(const Item &item)
{
string status{[&]
{
if (_profile.titles_as_cw)
{
if (_profile.titles_only)
{
return string{};
}
return item.description;
}
string s{item.title};
if (!_profile.titles_only)
{
s.append("\n\n" + item.description);
}
return s;
}()};
const size_t len_append{[&]
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{
if (_profile.append.empty())
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{
return size_t{0};
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}
return _profile.append.size() + 2;
}()};
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const size_t len_status{status.size()};
const size_t len_max{[&]
{
if (_profile.titles_as_cw)
{
// Subjects (CWs) count into the post length.
return _profile.max_size - item.title.size();
}
return _profile.max_size;
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}() - item.link.size() - 2 - len_append};
BOOST_LOG_TRIVIAL(debug)
<< "Maximum text (without link and appendix) length: " << len_max;
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if (len_status > len_max)
{
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constexpr string_view omission = " […]";
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status.resize(len_max - omission.size());
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// Don't cut in the middle of a word.
const auto pos = status.rfind(' ');
if (pos != string::npos)
{
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status.resize(pos);
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}
status.append(omission);
BOOST_LOG_TRIVIAL(debug) << "Status resized to: " << status.size();
}
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status.append("\n\n" + item.link);
if (!_profile.append.empty())
{
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status.append("\n\n" + _profile.append);
}
BOOST_LOG_TRIVIAL(debug) << "Status length: " << status.size();
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BOOST_LOG_TRIVIAL(debug) << "Status: \"" << status << '"';
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Mastodon::parameters params{{"status", {status}}};
if (_profile.titles_as_cw)
{
params.push_back({"spoiler_text", {item.title}});
}
const auto ret = _masto.post(Mastodon::API::v1::statuses, params);
if (!ret)
{
if (ret.http_error_code != 200)
{
throw HTTPException{ret.http_error_code};
}
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throw MastodonException{ret.error_code};
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}
BOOST_LOG_TRIVIAL(debug) << "Posted status with GUID: " << item.guid;
}
} // namespace mastorss