141 lines
3.0 KiB
C++
141 lines
3.0 KiB
C++
// SPDX-License-Identifier: GPL-2.0-or-later
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// Copyright The Music Player Daemon Project
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#include "QobuzTrackRequest.hxx"
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#include "QobuzErrorParser.hxx"
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#include "QobuzClient.hxx"
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#include "lib/yajl/Callbacks.hxx"
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using std::string_view_literals::operator""sv;
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using Wrapper = Yajl::CallbacksWrapper<QobuzTrackRequest::ResponseParser>;
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static constexpr yajl_callbacks parse_callbacks = {
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nullptr,
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nullptr,
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nullptr,
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nullptr,
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nullptr,
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Wrapper::String,
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nullptr,
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Wrapper::MapKey,
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Wrapper::EndMap,
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nullptr,
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nullptr,
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};
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class QobuzTrackRequest::ResponseParser final : public YajlResponseParser {
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enum class State {
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NONE,
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URL,
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} state = State::NONE;
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std::string url;
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public:
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explicit ResponseParser() noexcept
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:YajlResponseParser(&parse_callbacks, nullptr, this) {}
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std::string &&GetUrl() {
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if (url.empty())
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throw std::runtime_error("No url in track response");
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return std::move(url);
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}
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/* yajl callbacks */
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bool String(std::string_view value) noexcept;
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bool MapKey(std::string_view value) noexcept;
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bool EndMap() noexcept;
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};
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static std::string
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MakeTrackUrl(QobuzClient &client, const char *track_id)
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{
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return client.MakeSignedUrl("track", "getFileUrl",
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{
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{"track_id", track_id},
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{"format_id", client.GetFormatId()},
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});
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}
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QobuzTrackRequest::QobuzTrackRequest(QobuzClient &client,
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const QobuzSession &session,
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const char *track_id,
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QobuzTrackHandler &_handler)
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:request(client.GetCurl(),
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MakeTrackUrl(client, track_id).c_str(),
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*this),
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handler(_handler)
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{
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request_headers.Append(("X-User-Auth-Token:"
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+ session.user_auth_token).c_str());
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request.GetEasy().SetRequestHeaders(request_headers.Get());
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}
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QobuzTrackRequest::~QobuzTrackRequest() noexcept
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{
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request.StopIndirect();
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}
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std::unique_ptr<CurlResponseParser>
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QobuzTrackRequest::MakeParser(unsigned status,
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Curl::Headers &&headers)
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{
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if (status != 200)
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return std::make_unique<QobuzErrorParser>(status, headers);
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auto i = headers.find("content-type");
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if (i == headers.end() || i->second.find("/json") == i->second.npos)
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throw std::runtime_error("Not a JSON response from Qobuz");
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return std::make_unique<ResponseParser>();
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}
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void
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QobuzTrackRequest::FinishParser(std::unique_ptr<CurlResponseParser> p)
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{
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assert(dynamic_cast<ResponseParser *>(p.get()) != nullptr);
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auto &rp = (ResponseParser &)*p;
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handler.OnQobuzTrackSuccess(rp.GetUrl());
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}
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void
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QobuzTrackRequest::OnError(std::exception_ptr e) noexcept
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{
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handler.OnQobuzTrackError(e);
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}
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inline bool
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QobuzTrackRequest::ResponseParser::String(std::string_view value) noexcept
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{
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switch (state) {
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case State::NONE:
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break;
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case State::URL:
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url = value;
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break;
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}
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return true;
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}
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inline bool
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QobuzTrackRequest::ResponseParser::MapKey(std::string_view value) noexcept
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{
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if (value == "url"sv)
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state = State::URL;
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else
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state = State::NONE;
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return true;
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}
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inline bool
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QobuzTrackRequest::ResponseParser::EndMap() noexcept
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{
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state = State::NONE;
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return true;
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}
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