qt: Added update checker behind CMake option ENABLE_QT_UPDATE_CHECKER

.ci/linux.sh

@@ -11,6 +11,10 @@ else
     export EXTRA_CMAKE_FLAGS=(-DCITRA_USE_PRECOMPILED_HEADERS=OFF)
 fi
 
+if [ "$GITHUB_REF_TYPE" == "tag" ]; then
+	export EXTRA_CMAKE_FLAGS=($EXTRA_CMAKE_FLAGS -DENABLE_QT_UPDATE_CHECKER=ON)
+fi
+
 mkdir build && cd build
 cmake .. -G Ninja \
     -DCMAKE_BUILD_TYPE=Release \

CMakeLists.txt

@@ -68,6 +68,7 @@ option(USE_SYSTEM_SDL2 "Use the system SDL2 lib (instead of the bundled one)" OF
 # Set bundled qt as dependent options.
 option(ENABLE_QT "Enable the Qt frontend" ON)
 option(ENABLE_QT_TRANSLATION "Enable translations for the Qt frontend" OFF)
+option(ENABLE_QT_UPDATE_CHECKER "Enable built-in update checker for the Qt frontend" OFF)
 
 CMAKE_DEPENDENT_OPTION(ENABLE_TESTS "Enable generating tests executable" ON "NOT IOS" OFF)
 CMAKE_DEPENDENT_OPTION(ENABLE_ROOM "Enable generating dedicated room executable" ON "NOT ANDROID AND NOT IOS" OFF)

src/citra_qt/CMakeLists.txt

@@ -198,6 +198,12 @@ file(GLOB COMPAT_LIST
 file(GLOB_RECURSE ICONS ${PROJECT_SOURCE_DIR}/dist/icons/*)
 file(GLOB_RECURSE THEMES ${PROJECT_SOURCE_DIR}/dist/qt_themes/*)
 
+if (ENABLE_QT_UPDATE_CHECKER)
+    target_link_libraries(citra_qt PRIVATE httplib json-headers)
+    target_sources(citra_qt PRIVATE update_checker.cpp)
+    target_compile_definitions(citra_qt PUBLIC ENABLE_QT_UPDATE_CHECKER)
+endif()
+
 if (ENABLE_QT_TRANSLATION)
     set(CITRA_QT_LANGUAGES "${PROJECT_SOURCE_DIR}/dist/languages" CACHE PATH "Path to the translation bundle for the Qt frontend")
     option(GENERATE_QT_TRANSLATION "Generate en.ts as the translation source file" OFF)

src/citra_qt/citra_qt.cpp

@@ -69,6 +69,9 @@
 #include "citra_qt/play_time_manager.h"
 #include "citra_qt/qt_image_interface.h"
 #include "citra_qt/uisettings.h"
+#ifdef ENABLE_QT_UPDATE_CHECKER
+#include "citra_qt/update_checker.h"
+#endif
 #include "citra_qt/util/clickable_label.h"
 #include "citra_qt/util/graphics_device_info.h"
 #include "citra_qt/util/util.h"
@@ -305,6 +308,21 @@ GMainWindow::GMainWindow(Core::System& system_)
         }
     }
 
+#ifdef ENABLE_QT_UPDATE_CHECKER
+    const std::optional<std::string> latest_release = UpdateChecker::CheckForUpdate();
+    if (latest_release && latest_release.value() != Common::g_build_fullname) {
+        if (QMessageBox::information(
+                this, tr("Update Available"),
+                tr("Update %1 for Azahar is available.\nWould you like to download it?")
+                    .arg(QString::fromStdString(latest_release.value())),
+                QMessageBox::Yes | QMessageBox::Ignore) == QMessageBox::Yes) {
+            QDesktopServices::openUrl(QUrl(QString::fromStdString(
+                "https://github.com/azahar-emu/azahar/releases/tag/" + latest_release.value())));
+            exit(0);
+        }
+    }
+#endif
+
 #ifdef __unix__
     SetGamemodeEnabled(Settings::values.enable_gamemode.GetValue());
 #endif

src/citra_qt/update_checker.cpp

@@ -0,0 +1,50 @@
+// Copyright Citra Emulator Project / Azahar Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#include <optional>
+#include <string>
+#include <httplib.h>
+#include <json.hpp>
+#include "common/logging/log.h"
+#include "update_checker.h"
+
+std::optional<std::string> UpdateChecker::CheckForUpdate() {
+    constexpr auto UPDATE_CHECK_URL = "http://api.github.com";
+    constexpr auto UPDATE_CHECK_PATH = "/repos/azahar-emu/azahar/releases/latest";
+
+    std::unique_ptr<httplib::Client> client = std::make_unique<httplib::Client>(UPDATE_CHECK_URL);
+    if (client == nullptr) {
+        LOG_ERROR(Frontend, "Invalid URL {}{}", UPDATE_CHECK_URL, UPDATE_CHECK_PATH);
+        return {};
+    }
+
+    httplib::Request request{
+        .method = "GET",
+        .path = UPDATE_CHECK_PATH,
+    };
+
+    client->set_follow_location(true);
+    const auto result = client->send(request);
+    if (!result) {
+        LOG_ERROR(Frontend, "GET to {}{} returned null", UPDATE_CHECK_URL, UPDATE_CHECK_PATH);
+        return {};
+    }
+
+    const auto& response = result.value();
+    if (response.status >= 400) {
+        LOG_ERROR(Frontend, "GET to {}{} returned error status code: {}", UPDATE_CHECK_URL,
+                  UPDATE_CHECK_PATH, response.status);
+        return {};
+    }
+    if (!response.headers.contains("content-type")) {
+        LOG_ERROR(Frontend, "GET to {}{} returned no content", UPDATE_CHECK_URL, UPDATE_CHECK_PATH);
+        return {};
+    }
+
+    try {
+        return nlohmann::json::parse(response.body).at("tag_name");
+    } catch (nlohmann::detail::out_of_range&) {
+        return {};
+    }
+}

src/citra_qt/update_checker.h

@@ -0,0 +1,12 @@
+// Copyright Citra Emulator Project / Azahar Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include <optional>
+#include <string>
+
+namespace UpdateChecker {
+std::optional<std::string> CheckForUpdate();
+}