78 lines
2.4 KiB
C++
78 lines
2.4 KiB
C++
/* This file is part of mastodonpp.
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* Copyright © 2020 tastytea <tastytea@tastytea.de>
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as published by
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* the Free Software Foundation, version 3.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "answer.hpp"
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#include "instance.hpp"
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#include "log.hpp"
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namespace mastodonpp
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{
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using std::stoull;
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Instance::Instance(const string_view hostname, const string_view access_token)
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: _hostname{hostname}
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, _baseuri{"https://" + _hostname}
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, _access_token{access_token}
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, _max_chars{0}
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{}
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uint64_t Instance::get_max_chars()
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{
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constexpr uint64_t default_max_chars{500};
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if (_max_chars == 0)
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{
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try
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{
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debuglog << "Querying " << _hostname << " for max_toot_chars…\n";
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const auto answer{make_request(http_method::GET,
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_baseuri + "/api/v1/instance", {})};
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if (!answer)
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{
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debuglog << "Could not get instance info.\n";
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return default_max_chars;
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}
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_max_chars = [&answer]
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{
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auto &body{answer.body};
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size_t pos_start{body.find("max_toot_chars")};
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if (pos_start == string::npos)
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{
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debuglog << "max_toot_chars not found.\n";
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return default_max_chars;
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}
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pos_start = body.find(':', pos_start) + 1;
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const size_t pos_end{body.find(',', pos_start)};
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const auto max_toot_chars{body.substr(pos_start,
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pos_end - pos_start)};
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return static_cast<uint64_t>(stoull(max_toot_chars));
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}();
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debuglog << "Set _max_chars to: " << _max_chars << '\n';
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}
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catch (const std::exception &e)
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{
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debuglog << "Unexpected exception: " << e.what() << '\n';
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}
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}
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return _max_chars;
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}
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} // namespace mastodonpp
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