/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#include "mozilla/glean/bindings/Uuid.h"

#include "Common.h"
#include "jsapi.h"
#include "mozilla/Components.h"
#include "mozilla/ResultVariant.h"
#include "mozilla/glean/bindings/ScalarGIFFTMap.h"
#include "mozilla/glean/fog_ffi_generated.h"
#include "nsIClassInfoImpl.h"
#include "nsString.h"

namespace mozilla::glean {

namespace impl {

void UuidMetric::Set(const nsACString& aValue) const {
  auto scalarId = ScalarIdForMetric(mId);
  if (scalarId) {
    Telemetry::ScalarSet(scalarId.extract(), NS_ConvertUTF8toUTF16(aValue));
  }
  fog_uuid_set(mId, &aValue);
}

void UuidMetric::GenerateAndSet() const {
  // We don't have the generated value to mirror to the scalar,
  // so calling this function on a mirrored metric is likely an error.
  (void)NS_WARN_IF(ScalarIdForMetric(mId).isSome());
  fog_uuid_generate_and_set(mId);
}

Result<Maybe<nsCString>, nsCString> UuidMetric::TestGetValue(
    const nsACString& aPingName) const {
  nsCString err;
  if (fog_uuid_test_get_error(mId, &err)) {
    return Err(err);
  }
  if (!fog_uuid_test_has_value(mId, &aPingName)) {
    return Maybe<nsCString>();
  }
  nsCString ret;
  fog_uuid_test_get_value(mId, &aPingName, &ret);
  return Some(ret);
}

}  // namespace impl

NS_IMPL_CLASSINFO(GleanUuid, nullptr, 0, {0})
NS_IMPL_ISUPPORTS_CI(GleanUuid, nsIGleanUuid)

NS_IMETHODIMP
GleanUuid::Set(const nsACString& aValue) {
  mUuid.Set(aValue);
  return NS_OK;
}

NS_IMETHODIMP
GleanUuid::GenerateAndSet() {
  mUuid.GenerateAndSet();
  return NS_OK;
}

NS_IMETHODIMP
GleanUuid::TestGetValue(const nsACString& aStorageName, JSContext* aCx,
                        JS::MutableHandle<JS::Value> aResult) {
  auto result = mUuid.TestGetValue(aStorageName);
  if (result.isErr()) {
    aResult.set(JS::UndefinedValue());
    LogToBrowserConsole(nsIScriptError::errorFlag,
                        NS_ConvertUTF8toUTF16(result.unwrapErr()));
    return NS_ERROR_LOSS_OF_SIGNIFICANT_DATA;
  }
  auto optresult = result.unwrap();
  if (optresult.isNothing()) {
    aResult.set(JS::UndefinedValue());
  } else {
    const NS_ConvertUTF8toUTF16 str(optresult.value());
    aResult.set(
        JS::StringValue(JS_NewUCStringCopyN(aCx, str.Data(), str.Length())));
  }
  return NS_OK;
}

}  // namespace mozilla::glean