Added last.fm support to scrobble data, fixes #138

src/libs/core/CMakeLists.txt

@@ -34,6 +34,7 @@ add_library(lmscore STATIC
 	impl/String.cpp
 	impl/TraceLogger.cpp
 	impl/UUID.cpp
+	impl/Md5.cpp
 	impl/XxHash3.cpp
 	${CMAKE_CURRENT_BINARY_DIR}/impl/Version.cpp
 	)

src/libs/core/impl/Md5.cpp

@@ -0,0 +1,35 @@
+/*
+ * Copyright (C) 2025 Emeric Poupon
+ *
+ * This file is part of LMS.
+ *
+ * LMS 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, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * LMS 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 LMS.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "core/Md5.hpp"
+
+#include <Wt/Utils.h>
+
+namespace lms::core
+{
+    std::array<std::byte, 16> md5(std::string_view data)
+    {
+        const std::string raw{ Wt::Utils::md5(std::string{ data }) };
+
+        std::array<std::byte, 16> result;
+        for (std::size_t i{}; i < 16; ++i)
+            result[i] = static_cast<std::byte>(static_cast<unsigned char>(raw[i]));
+        return result;
+    }
+} // namespace lms::core

src/libs/core/impl/String.cpp

@@ -462,6 +462,22 @@ namespace lms::core::stringUtils
         detail::writeEscapedString(os, str, detail::xmlEscapeChars);
     }
 
+    std::string urlEncode(std::string_view str)
+    {
+        std::ostringstream encoded;
+        encoded << std::hex << std::uppercase;
+
+        for (const unsigned char c : str)
+        {
+            if (std::isalnum(c) || c == '-' || c == '_' || c == '.' || c == '~')
+                encoded << c;
+            else
+                encoded << '%' << std::setw(2) << std::setfill('0') << static_cast<int>(c);
+        }
+
+        return encoded.str();
+    }
+
     std::string escapeString(std::string_view str, std::string_view charsToEscape, char escapeChar)
     {
         std::string res;

src/libs/core/impl/http/SendQueue.cpp

@@ -284,8 +284,12 @@ namespace lms::core::http
         LOG(DEBUG, "Remaining messages = " << (remainingCount ? *remainingCount : 0));
         if (mustThrottle || (remainingCount && *remainingCount == 0))
         {
-            const auto waitDuration{ headerReadAs<std::chrono::seconds>(msg, "X-RateLimit-Reset-In") };
-            throttle(waitDuration.value_or(_defaultRetryWaitDuration));
+            const std::chrono::seconds waitDuration{
+                headerReadAs<std::chrono::seconds>(msg, "X-RateLimit-Reset-In")
+                    .value_or(headerReadAs<std::chrono::seconds>(msg, "Retry-After")
+                                  .value_or(_defaultRetryWaitDuration))
+            };
+            throttle(waitDuration);
         }
 
         if (!mustThrottle)

src/libs/core/include/core/Md5.hpp

@@ -0,0 +1,29 @@
+/*
+ * Copyright (C) 2025 Emeric Poupon
+ *
+ * This file is part of LMS.
+ *
+ * LMS 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, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * LMS 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 LMS.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#pragma once
+
+#include <array>
+#include <cstddef>
+#include <string_view>
+
+namespace lms::core
+{
+    std::array<std::byte, 16> md5(std::string_view data);
+} // namespace lms::core

src/libs/core/include/core/String.hpp

@@ -108,6 +108,8 @@ namespace lms::core::stringUtils
     [[nodiscard]] std::string xmlEscape(std::string_view str);
     void writeXmlEscapedString(std::ostream& os, std::string_view str);
 
+    [[nodiscard]] std::string urlEncode(std::string_view str);
+
     [[nodiscard]] std::string escapeString(std::string_view str, std::string_view charsToEscape, char escapeChar);
     [[nodiscard]] std::string unescapeString(std::string_view str, char escapeChar);