// Copyright 2013 The Flutter Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "flutter/fml/time/time_point.h"

#include "impeller/playground/compute_playground_test.h"

namespace impeller {

ComputePlaygroundTest::ComputePlaygroundTest() = default;

ComputePlaygroundTest::~ComputePlaygroundTest() = default;

void ComputePlaygroundTest::SetUp() {
  if (!Playground::SupportsBackend(GetParam())) {
    GTEST_SKIP_("Playground doesn't support this backend type.");
    return;
  }

  if (!Playground::ShouldOpenNewPlaygrounds()) {
    GTEST_SKIP_("Skipping due to user action.");
    return;
  }

  SetupContext(GetParam());

  start_time_ = fml::TimePoint::Now().ToEpochDelta();
}

void ComputePlaygroundTest::TearDown() {
  TeardownWindow();
}

// |Playground|
std::unique_ptr<fml::Mapping> ComputePlaygroundTest::OpenAssetAsMapping(
    std::string asset_name) const {
  return flutter::testing::OpenFixtureAsMapping(asset_name);
}

std::shared_ptr<RuntimeStage> ComputePlaygroundTest::OpenAssetAsRuntimeStage(
    const char* asset_name) const {
  auto fixture = flutter::testing::OpenFixtureAsMapping(asset_name);
  if (!fixture || fixture->GetSize() == 0) {
    return nullptr;
  }
  auto stage = std::make_unique<RuntimeStage>(std::move(fixture));
  if (!stage->IsValid()) {
    return nullptr;
  }
  return stage;
}

static std::string FormatWindowTitle(const std::string& test_name) {
  std::stringstream stream;
  stream << "Impeller Playground for '" << test_name
         << "' (Press ESC or 'q' to quit)";
  return stream.str();
}

// |Playground|
std::string ComputePlaygroundTest::GetWindowTitle() const {
  return FormatWindowTitle(flutter::testing::GetCurrentTestName());
}

Scalar ComputePlaygroundTest::GetSecondsElapsed() const {
  return (fml::TimePoint::Now().ToEpochDelta() - start_time_).ToSecondsF();
}

}  // namespace impeller