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#include "partners_api/taxi_engine.hpp"
#include "partners_api/taxi_places.hpp"
#include "partners_api/uber_api.hpp"
#include "partners_api/yandex_api.hpp"
#include "base/macros.hpp"
#include "base/stl_add.hpp"
#include <algorithm>
#include <initializer_list>
#include <iterator>
#include <utility>
namespace
{
template <typename Iter>
Iter FindByProviderType(taxi::Provider::Type type, Iter first, Iter last)
{
using IterValueType = typename std::iterator_traits<Iter>::value_type;
return std::find_if(first, last,
[type](IterValueType const & item) { return item.m_type == type; });
}
} // namespace
namespace taxi
{
// ResultMaker ------------------------------------------------------------------------------------
void ResultMaker::Reset(uint64_t requestId, size_t requestsCount,
SuccessCallback const & successCallback,
ErrorCallback const & errorCallback)
{
ASSERT(successCallback, ());
ASSERT(errorCallback, ());
std::lock_guard<std::mutex> lock(m_mutex);
m_requestId = requestId;
m_requestsCount = static_cast<int8_t>(requestsCount);
m_successCallback = successCallback;
m_errorCallback = errorCallback;
m_providers.clear();
m_errors.clear();
}
void ResultMaker::DecrementRequestCount(uint64_t requestId)
{
std::lock_guard<std::mutex> lock(m_mutex);
if (m_requestId != requestId)
return;
DecrementRequestCount();
}
void ResultMaker::ProcessProducts(uint64_t requestId, Provider::Type type,
std::vector<Product> const & products)
{
std::lock_guard<std::mutex> lock(m_mutex);
if (m_requestId != requestId)
return;
m_providers.emplace_back(type, products);
DecrementRequestCount();
}
void ResultMaker::ProcessError(uint64_t requestId, Provider::Type type, ErrorCode code)
{
std::lock_guard<std::mutex> lock(m_mutex);
if (m_requestId != requestId)
return;
m_errors.emplace_back(type, code);
DecrementRequestCount();
}
void ResultMaker::MakeResult(uint64_t requestId) const
{
SuccessCallback successCallback;
ErrorCallback errorCallback;
ProvidersContainer providers;
ErrorsContainer errors;
{
std::lock_guard<std::mutex> lock(m_mutex);
if (m_requestId != requestId || m_requestsCount != 0)
return;
successCallback = m_successCallback;
errorCallback = m_errorCallback;
providers = m_providers;
errors = m_errors;
}
if (!providers.empty() || (providers.empty() && errors.empty()))
return successCallback(providers, requestId);
return errorCallback(errors, requestId);
}
void ResultMaker::DecrementRequestCount()
{
CHECK_GREATER(m_requestsCount, 0, ());
--m_requestsCount;
}
// Engine -----------------------------------------------------------------------------------------
Engine::Engine(std::vector<ProviderUrl> urls /* = {} */)
{
AddApi<yandex::Api>(urls, Provider::Type::Yandex, places::kYandexEnabledPlaces, {{}});
AddApi<uber::Api>(urls, Provider::Type::Uber, {{}}, places::kUberDisabledPlaces);
}
void Engine::SetDelegate(std::unique_ptr<Delegate> delegate) { m_delegate = std::move(delegate); }
/// Requests list of available products. Returns request identificator immediately.
uint64_t Engine::GetAvailableProducts(ms::LatLon const & from, ms::LatLon const & to,
SuccessCallback const & successFn,
ErrorCallback const & errorFn)
{
ASSERT(successFn, ());
ASSERT(errorFn, ());
ASSERT(m_delegate, ());
auto const reqId = ++m_requestId;
auto const maker = m_maker;
maker->Reset(reqId, m_apis.size(), successFn, errorFn);
for (auto const & api : m_apis)
{
auto type = api.m_type;
if (!IsAvailableAtPos(type, from))
{
maker->DecrementRequestCount(reqId);
maker->MakeResult(reqId);
continue;
}
auto const productCallback = [type, maker, reqId](std::vector<Product> const & products)
{
maker->ProcessProducts(reqId, type, products);
maker->MakeResult(reqId);
};
auto const errorCallback = [type, maker, reqId](ErrorCode const code)
{
maker->ProcessError(reqId, type, code);
maker->MakeResult(reqId);
};
api.m_api->GetAvailableProducts(from, to, productCallback, errorCallback);
}
return reqId;
}
/// Returns link which allows you to launch some taxi app.
RideRequestLinks Engine::GetRideRequestLinks(Provider::Type type, std::string const & productId,
ms::LatLon const & from, ms::LatLon const & to) const
{
auto const it = FindByProviderType(type, m_apis.cbegin(), m_apis.cend());
CHECK(it != m_apis.cend(), ());
return it->m_api->GetRideRequestLinks(productId, from, to);
}
std::vector<Provider::Type> Engine::GetProvidersAtPos(ms::LatLon const & pos) const
{
std::vector<Provider::Type> result;
for (auto const & api : m_apis)
{
if (IsAvailableAtPos(api.m_type, pos))
result.push_back(api.m_type);
}
return result;
}
bool Engine::IsAvailableAtPos(Provider::Type type, ms::LatLon const & pos) const
{
if (AreAllCountriesDisabled(type, pos))
return false;
return IsAnyCountryEnabled(type, pos);
}
bool Engine::AreAllCountriesDisabled(Provider::Type type, ms::LatLon const & latlon) const
{
auto const it = FindByProviderType(type, m_apis.cbegin(), m_apis.cend());
CHECK(it != m_apis.cend(), ());
auto const countryIds = m_delegate->GetCountryIds(latlon);
auto const city = m_delegate->GetCityName(latlon);
return it->AreAllCountriesDisabled(countryIds, city);
}
bool Engine::IsAnyCountryEnabled(Provider::Type type, ms::LatLon const & latlon) const
{
auto const it = FindByProviderType(type, m_apis.cbegin(), m_apis.cend());
CHECK(it != m_apis.cend(), ());
auto const countryIds = m_delegate->GetCountryIds(latlon);
auto const city = m_delegate->GetCityName(latlon);
return it->IsAnyCountryEnabled(countryIds, city);
}
template <typename ApiType>
void Engine::AddApi(std::vector<ProviderUrl> const & urls, Provider::Type type,
Countries const & enabled, Countries const & disabled)
{
auto const it = std::find_if(urls.cbegin(), urls.cend(), [type](ProviderUrl const & item)
{
return item.m_type == type;
});
if (it != urls.cend())
m_apis.emplace_back(type, my::make_unique<ApiType>(it->m_url), enabled, disabled);
else
m_apis.emplace_back(type, my::make_unique<ApiType>(), enabled, disabled);
}
} // namespace taxi
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