From 1e0772e9e7a5ca6e102872ee11cc723852300df2 2017-07-10 08:09:24
From: Alexandre Leroux <aleroux@itlink.fr>
Date: 2017-07-10 08:09:24
Subject: [PATCH] Amda provider (1)

Creates url to retrieve the address for downloading the results file

---

diff --git a/plugins/amda/CMakeLists.txt b/plugins/amda/CMakeLists.txt
index bfa7e21..1b66326 100644
--- a/plugins/amda/CMakeLists.txt
+++ b/plugins/amda/CMakeLists.txt
@@ -13,7 +13,7 @@ INCLUDE_DIRECTORIES(${RESOURCES_DIR})
 #
 # Find Qt modules
 #
-SCIQLOP_FIND_QT(Core Widgets)
+SCIQLOP_FIND_QT(Core Widgets Network)
 
 #
 # Find dependent libraries
@@ -68,7 +68,7 @@ INSTALL(TARGETS ${SQPAMDA_LIBRARY_NAME}
 
 
 TARGET_LINK_LIBRARIES(${SQPAMDA_LIBRARY_NAME} ${LIBRARIES})
-qt5_use_modules(${SQPAMDA_LIBRARY_NAME} Core Widgets)
+qt5_use_modules(${SQPAMDA_LIBRARY_NAME} Core Widgets Network)
 
 add_dependencies(${SQPAMDA_LIBRARY_NAME} ${SQPPLUGIN_LIBRARY_NAME} ${SQPGUI_LIBRARY_NAME} ${SQPCORE_LIBRARY_NAME})
 	
diff --git a/plugins/amda/include/AmdaProvider.h b/plugins/amda/include/AmdaProvider.h
index c346dae..79b2b8b 100644
--- a/plugins/amda/include/AmdaProvider.h
+++ b/plugins/amda/include/AmdaProvider.h
@@ -26,6 +26,9 @@ private:
 
     class AmdaProviderPrivate;
     spimpl::unique_impl_ptr<AmdaProviderPrivate> impl;
+
+private slots:
+    void httpFinished() noexcept;
 };
 
 #endif // SCIQLOP_AMDAPROVIDER_H
diff --git a/plugins/amda/src/AmdaProvider.cpp b/plugins/amda/src/AmdaProvider.cpp
index ea54307..c36bbec 100644
--- a/plugins/amda/src/AmdaProvider.cpp
+++ b/plugins/amda/src/AmdaProvider.cpp
@@ -1,8 +1,40 @@
 #include "AmdaProvider.h"
+#include <Data/DataProviderParameters.h>
+
+#include <QNetworkAccessManager>
+#include <QNetworkReply>
 
 Q_LOGGING_CATEGORY(LOG_AmdaProvider, "AmdaProvider")
 
+namespace {
+
+/// URL format for a request on AMDA server. The parameters are as follows:
+/// - %1: start date
+/// - %2: end date
+/// - %3: parameter id
+const auto AMDA_URL_FORMAT = QStringLiteral(
+    "http://amda.irap.omp.eu/php/rest/"
+    "getParameter.php?startTime=%1&stopTime=%2&parameterID=%3&sampling=60&outputFormat=ASCII&"
+    "timeFormat=ISO8601&gzip=0");
+
+/// Dates format passed in the URL (e.g 2013-09-23T09:00)
+const auto AMDA_TIME_FORMAT = QStringLiteral("yyyy-MM-ddThh:ss");
+
+/// Formats a time to a date that can be passed in URL
+QString dateFormat(double sqpDateTime) noexcept
+{
+    auto dateTime = QDateTime::fromMSecsSinceEpoch(sqpDateTime * 1000.);
+    return dateTime.toString(AMDA_TIME_FORMAT);
+}
+
+} // namespace
+
 struct AmdaProvider::AmdaProviderPrivate {
+    DataProviderParameters m_Params{};
+    std::unique_ptr<QNetworkAccessManager> m_AccessManager{nullptr};
+    QNetworkReply *m_Reply{nullptr};
+    std::unique_ptr<QTemporaryFile> m_File{nullptr};
+    QUuid m_Token;
 };
 
 AmdaProvider::AmdaProvider() : impl{spimpl::make_unique_impl<AmdaProviderPrivate>()}
@@ -19,5 +51,28 @@ void AmdaProvider::requestDataLoading(QUuid token, const QVector<SqpDateTime> &d
 
 void AmdaProvider::retrieveData(QUuid token, const DataProviderParameters &parameters) const
 {
+    // /////////// //
+    // Creates URL //
+    // /////////// //
+
+    auto startDate = dateFormat(parameters.m_Time.m_TStart);
+    auto endDate = dateFormat(parameters.m_Time.m_TEnd);
+    auto productId = QStringLiteral("imf(0)");
+
+    auto url = QUrl{QString{AMDA_URL_FORMAT}.arg(startDate, endDate, productId)};
+
+    // //////////////// //
+    // Executes request //
+    // //////////////// //
+
+    impl->m_Token = token;
+    impl->m_Params = parameters;
+    impl->m_AccessManager = std::make_unique<QNetworkAccessManager>();
+    impl->m_Reply = impl->m_AccessManager->get(QNetworkRequest{url});
+    connect(impl->m_Reply, &QNetworkReply::finished, this, &AmdaProvider::httpFinished);
+}
+
+void AmdaProvider::httpFinished() noexcept
+{
     /// @todo ALX
 }