core/telemetry_session: Remove usages of the global system accessor

Makes the dependency explicit in the TelemetrySession's interface
instead of making it a hidden dependency.

This also revealed a hidden issue with the way the telemetry session was
being initialized. It was attempting to retrieve the app loader and log
out title-specific information. However, this isn't always guaranteed to
be possible.

During the initialization phase, everything is being constructed. It
doesn't mean an actual title has been selected. This is what the Load()
function is for. This potentially results in dead code paths involving
the app loader. Instead, we explicitly add this information when we know
the app loader instance is available.

1 files changed, 32 insertions, 28 deletions

diff --git a/src/core/telemetry_session.cpp b/src/core/telemetry_session.cpp
index 4b17bada5..4f8aff816 100644
--- a/src/core/telemetry_session.cpp
+++ b/src/core/telemetry_session.cpp
@@ -12,7 +12,6 @@
 #include "common/file_util.h"
 #include "common/logging/log.h"
 
-#include "core/core.h"
 #include "core/file_sys/control_metadata.h"
 #include "core/file_sys/patch_manager.h"
 #include "core/loader/loader.h"
@@ -101,7 +100,31 @@ bool VerifyLogin(const std::string& username, const std::string& token) {
 #endif
 }
 
-TelemetrySession::TelemetrySession() {
+TelemetrySession::TelemetrySession() = default;
+
+TelemetrySession::~TelemetrySession() {
+    // Log one-time session end information
+    const s64 shutdown_time{std::chrono::duration_cast<std::chrono::milliseconds>(
+                                std::chrono::system_clock::now().time_since_epoch())
+                                .count()};
+    AddField(Telemetry::FieldType::Session, "Shutdown_Time", shutdown_time);
+
+#ifdef ENABLE_WEB_SERVICE
+    auto backend = std::make_unique<WebService::TelemetryJson>(
+        Settings::values.web_api_url, Settings::values.yuzu_username, Settings::values.yuzu_token);
+#else
+    auto backend = std::make_unique<Telemetry::NullVisitor>();
+#endif
+
+    // Complete the session, submitting to web service if necessary
+    field_collection.Accept(*backend);
+    if (Settings::values.enable_telemetry) {
+        backend->Complete();
+    }
+    backend = nullptr;
+}
+
+void TelemetrySession::AddInitialInfo(Loader::AppLoader& app_loader) {
     // Log one-time top-level information
     AddField(Telemetry::FieldType::None, "TelemetryId", GetTelemetryId());
 
@@ -112,26 +135,28 @@ TelemetrySession::TelemetrySession() {
     AddField(Telemetry::FieldType::Session, "Init_Time", init_time);
 
     u64 program_id{};
-    const Loader::ResultStatus res{System::GetInstance().GetAppLoader().ReadProgramId(program_id)};
+    const Loader::ResultStatus res{app_loader.ReadProgramId(program_id)};
     if (res == Loader::ResultStatus::Success) {
         const std::string formatted_program_id{fmt::format("{:016X}", program_id)};
         AddField(Telemetry::FieldType::Session, "ProgramId", formatted_program_id);
 
         std::string name;
-        System::GetInstance().GetAppLoader().ReadTitle(name);
+        app_loader.ReadTitle(name);
 
         if (name.empty()) {
             auto [nacp, icon_file] = FileSys::PatchManager(program_id).GetControlMetadata();
-            if (nacp != nullptr)
+            if (nacp != nullptr) {
                 name = nacp->GetApplicationName();
+            }
         }
 
-        if (!name.empty())
+        if (!name.empty()) {
             AddField(Telemetry::FieldType::Session, "ProgramName", name);
+        }
     }
 
     AddField(Telemetry::FieldType::Session, "ProgramFormat",
-             static_cast<u8>(System::GetInstance().GetAppLoader().GetFileType()));
+             static_cast<u8>(app_loader.GetFileType()));
 
     // Log application information
     Telemetry::AppendBuildInfo(field_collection);
@@ -162,27 +187,6 @@ TelemetrySession::TelemetrySession() {
              Settings::values.use_docked_mode);
 }
 
-TelemetrySession::~TelemetrySession() {
-    // Log one-time session end information
-    const s64 shutdown_time{std::chrono::duration_cast<std::chrono::milliseconds>(
-                                std::chrono::system_clock::now().time_since_epoch())
-                                .count()};
-    AddField(Telemetry::FieldType::Session, "Shutdown_Time", shutdown_time);
-
-#ifdef ENABLE_WEB_SERVICE
-    auto backend = std::make_unique<WebService::TelemetryJson>(
-        Settings::values.web_api_url, Settings::values.yuzu_username, Settings::values.yuzu_token);
-#else
-    auto backend = std::make_unique<Telemetry::NullVisitor>();
-#endif
-
-    // Complete the session, submitting to web service if necessary
-    field_collection.Accept(*backend);
-    if (Settings::values.enable_telemetry)
-        backend->Complete();
-    backend = nullptr;
-}
-
 bool TelemetrySession::SubmitTestcase() {
 #ifdef ENABLE_WEB_SERVICE
     auto backend = std::make_unique<WebService::TelemetryJson>(