#include "Telemetry/TelemetryEvent.h"
#include "Serialization/JsonSerializer.h"
#include "Serialization/JsonWriter.h"
#include "Policies/CondensedJsonPrintPolicy.h"

FString Telemetry::ToJsonLine(const FTelemetryEnvelope& Envelope, const FTelemetryEvent& Event)
{
	TSharedRef<FJsonObject> Root = MakeShared<FJsonObject>();
	Root->SetNumberField(TEXT("schema_version"), Envelope.SchemaVersion);
	Root->SetStringField(TEXT("event_id"), Envelope.EventId.ToString(EGuidFormats::DigitsWithHyphensLower));
	Root->SetStringField(TEXT("timestamp_utc"), Envelope.TimestampUtc.ToIso8601());
	Root->SetNumberField(TEXT("game_time"), Envelope.GameTime);
	Root->SetStringField(TEXT("session_id"), Envelope.SessionId.ToString(EGuidFormats::DigitsWithHyphensLower));
	Root->SetStringField(TEXT("player_id"), Envelope.PlayerId);
	Root->SetBoolField(TEXT("is_server"), Envelope.bIsServer);
	Root->SetNumberField(TEXT("party_size"), Envelope.PartySize);
	Root->SetStringField(TEXT("build"), Envelope.Build);
	Root->SetStringField(TEXT("map"), Envelope.Map);
	Root->SetBoolField(TEXT("cheats_used"), Envelope.bCheatsUsed);
	Root->SetStringField(TEXT("name"), Event.Name.ToString());
	Root->SetObjectField(TEXT("payload"), Event.Payload.IsValid() ? Event.Payload : MakeShared<FJsonObject>());

	FString Line;
	TSharedRef<TJsonWriter<TCHAR, TCondensedJsonPrintPolicy<TCHAR>>> Writer =
		TJsonWriterFactory<TCHAR, TCondensedJsonPrintPolicy<TCHAR>>::Create(&Line);
	FJsonSerializer::Serialize(Root, Writer);
	return Line;
}