// Copyright 2019 The Fuchsia 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 "src/logger/project_context.h"

#include <memory>
#include <string>
#include <utility>

#include <gtest/gtest.h>

#include "src/logger/test_registries/project_context_test_registry.cb.h"
#include "src/registry/project_configs.h"
#include "third_party/abseil-cpp/absl/strings/escaping.h"

using cobalt::config::ProjectConfigs;

namespace cobalt::logger {

namespace {
constexpr char kCustomerA[] = "CustomerA";
constexpr uint32_t kCustomerAId = 123;
constexpr char kProjectA1[] = "ProjectA1";
constexpr uint32_t kProjectA1Id = 1;
constexpr char kMetricA1a[] = "MetricA1a";
constexpr uint32_t kMetricA1aId = 1;

bool PopulateCobaltRegistry(CobaltRegistry* cobalt_registry) {
  std::string cobalt_registry_bytes;
  if (!absl::Base64Unescape(kCobaltRegistryBase64, &cobalt_registry_bytes)) {
    return false;
  }
  return cobalt_registry->ParseFromString(cobalt_registry_bytes);
}

}  // namespace

class ProjectContextTest : public ::testing::Test {
 protected:
  void SetUp() override {
    // We create a ProjectConfigs by first creating a CobaltRegistry from
    // the ASCII proto above.
    auto cobalt_config = std::make_unique<CobaltRegistry>();
    ASSERT_TRUE(PopulateCobaltRegistry(cobalt_config.get()));
    auto project_configs = ProjectConfigs::CreateFromCobaltRegistryProto(std::move(cobalt_config));
    project_configs_.reset(project_configs.release());
  }

  // Check that |metric_definition| contains the correct data given that
  // it is supposed to be for MetricA1a.
  static void CheckMetricA1a(const MetricDefinition& metric_definition) {
    EXPECT_EQ(kMetricA1a, metric_definition.metric_name());
    EXPECT_EQ(kMetricA1aId, metric_definition.id());
  }

  // Check that |project_context| contains the correct data given that it is
  // supposed to be for ProjectA1.
  static void CheckProjectContextA1(const ProjectContext& project_context) {
#ifndef PROTO_LITE
    // This check only works with proto full.
    auto debug_string = project_context.DebugString();
    EXPECT_TRUE(debug_string.find(kCustomerA) != std::string::npos);
    EXPECT_TRUE(debug_string.find(kProjectA1) != std::string::npos);
#endif
    auto fully_qualified_name = project_context.FullyQualifiedName();
    EXPECT_TRUE(fully_qualified_name.find(kCustomerA) != std::string::npos);
    EXPECT_TRUE(fully_qualified_name.find(kProjectA1) != std::string::npos);
    CheckMetricA1a(*project_context.GetMetric(kMetricA1a));
    CheckMetricA1a(*project_context.GetMetric(kMetricA1aId));
    MetricRef metric_ref(&project_context.project(), project_context.GetMetric(kMetricA1a));
    EXPECT_EQ(kMetricA1aId, metric_ref.metric_id());
    fully_qualified_name = metric_ref.FullyQualifiedName();
    EXPECT_TRUE(fully_qualified_name.find(kCustomerA) != std::string::npos);
    EXPECT_TRUE(fully_qualified_name.find(kProjectA1) != std::string::npos);
    EXPECT_TRUE(fully_qualified_name.find(kMetricA1a) != std::string::npos);
    EXPECT_EQ(nullptr, project_context.GetMetric("NoSuchMetric"));
    EXPECT_EQ(nullptr, project_context.GetMetric(42));
  }

  std::shared_ptr<ProjectConfigs> project_configs_;
};

// Test ProjectContext starting with constructing one that owns its
// ProjectConfig.
TEST_F(ProjectContextTest, ConstructWithOwnedProjectConfig) {
  auto project_config = std::make_unique<ProjectConfig>(
      *project_configs_->GetProjectConfig(kCustomerAId, kProjectA1Id));
  auto project_context =
      std::make_unique<ProjectContext>(kCustomerAId, kCustomerA, std::move(project_config));
  CheckProjectContextA1(*project_context);
}

// Test ProjectContext starting with constructing one that doesn't own its
// ProjectConfig.
TEST_F(ProjectContextTest, ConstructWithUnownedProjectConfig) {
  auto project_context = std::make_unique<ProjectContext>(
      kCustomerAId, kCustomerA, project_configs_->GetProjectConfig(kCustomerAId, kProjectA1Id));
  CheckProjectContextA1(*project_context);
}

}  // namespace cobalt::logger