/*
 * Copyright (c) Contributors to the Open 3D Engine Project.
 * For complete copyright and license terms please see the LICENSE at the root of this distribution.
 *
 * SPDX-License-Identifier: Apache-2.0 OR MIT
 *
 */

#pragma once

#include <AzTest/AzTest.h>
#include <AssetValidationSystemComponent.h>

#include <AzFramework/API/ApplicationAPI.h>
#include <AzFramework/Asset/AssetSeedList.h>
#include <AzFramework/Asset/AssetSystemBus.h>
#include <AzFramework/IO/LocalFileIO.h>
#include <AzCore/UnitTest/TestTypes.h>
#include <AzCore/Settings/SettingsRegistryImpl.h>
#include <AzCore/Settings/SettingsRegistryMergeUtils.h>
#include <Tests/FileIOBaseTestTypes.h>
#include <Utils/Utils.h>

constexpr int NumTestAssets = 10;
constexpr char ProjectName[] = "UnitTest";

class MockValidationComponent : public AssetValidation::AssetValidationSystemComponent
    , public AZ::Data::AssetCatalogRequestBus::Handler
{
public:

    MockValidationComponent()
    {
        for (int i = 0; i < NumTestAssets; ++i)
        {
            m_assetIds[i] = AZ::Data::AssetId(AZ::Uuid::CreateRandom(), 0);
        }
        AZ::Data::AssetCatalogRequestBus::Handler::BusConnect();
        AssetValidation::AssetValidationSystemComponent::Activate();
    }

    ~MockValidationComponent()
    {
        AssetValidation::AssetValidationSystemComponent::Deactivate();
        AZ::Data::AssetCatalogRequestBus::Handler::BusDisconnect();
    }

    void SeedMode() override
    {
        AssetValidation::AssetValidationSystemComponent::SeedMode();
    }

    bool IsKnownAsset(const char* fileName) override
    {
        return AssetValidation::AssetValidationSystemComponent::IsKnownAsset(fileName);
    }

    bool AddSeedAssetId(AZ::Data::AssetId assetId, AZ::u32 sourceId) override
    {
        return AssetValidation::AssetValidationSystemComponent::AddSeedAssetId(assetId, sourceId);
    }

    AZ::Data::AssetInfo GetAssetInfoById(const AZ::Data::AssetId& id) override
    {
        AZ::Data::AssetInfo result;

        for (int slotNum = 0; slotNum < NumTestAssets; ++slotNum)
        {
            const AZ::Data::AssetId& assetId = m_assetIds[slotNum];
            if (assetId == id)
            {
                result.m_assetId = id;
                // Internal paths should be lower cased as from the cache
                result.m_relativePath = AZStd::string::format("assetpath%d", slotNum);
                break;
            }
        }
        return result;
    }

    AZ::Outcome<AZStd::vector<AZ::Data::ProductDependency>, AZStd::string> GetAllProductDependencies(const AZ::Data::AssetId& id) override
    {
        AZStd::vector<AZ::Data::ProductDependency> dependencyList;
        bool foundAsset{ false };
        for (const AZ::Data::AssetId& assetId : m_assetIds)
        {
            if (assetId == id)
            {
                foundAsset = true;
            }
            else if (foundAsset)
            {
                AZ::Data::ProductDependency thisDependency;
                thisDependency.m_assetId = assetId;
                dependencyList.emplace_back(AZ::Data::ProductDependency(assetId, {}));
            }
        }
        if (dependencyList.size())
        {
            return AZ::Success(dependencyList);
        }
        return AZ::Failure(AZStd::string("Asset not found"));
    }

    bool TestAddSeedsFor(const AzFramework::AssetSeedList& seedList, AZ::u32 sourceId)
    {
        return AddSeedsFor(seedList, sourceId);
    }

    bool TestRemoveSeedsFor(const AzFramework::AssetSeedList& seedList, AZ::u32 sourceId)
    {
        return RemoveSeedsFor(seedList, sourceId);
    }

    bool TestAddSeedList(const char* seedListName)
    {
        return AddSeedList(seedListName);
    }

    bool TestRemoveSeedList(const char* seedListName)
    {
        return RemoveSeedList(seedListName);
    }

    AZ::Outcome<AzFramework::AssetSeedList, AZStd::string> LoadSeedList(const char* fileName, AZStd::string& seedFilepath) override
    {
        if (m_validSeedPath == fileName)
        {
            seedFilepath = fileName;
            return AZ::Success(m_validSeedList);
        }
        return AZ::Failure(AZStd::string("Invalid List"));
    }

    AzFramework::AssetSeedList m_validSeedList;
    AZStd::string m_validSeedPath;
    AZ::Data::AssetId m_assetIds[NumTestAssets];
};

struct AssetValidationTest
    : UnitTest::ScopedAllocatorSetupFixture,
    UnitTest::SetRestoreFileIOBaseRAII,
    AzFramework::ApplicationRequests::Bus::Handler
{
    AssetValidationTest() : UnitTest::SetRestoreFileIOBaseRAII(m_fileIO)
    {
        if (!AZ::SettingsRegistry::Get())
        {
            AZ::SettingsRegistry::Register(&m_registry);

            auto projectPathKey = AZ::SettingsRegistryInterface::FixedValueString(AZ::SettingsRegistryMergeUtils::BootstrapSettingsRootKey)
                + "/project_path";
            m_registry.Set(projectPathKey, (AZ::IO::FixedMaxPath(m_tempDir.GetDirectory()) / "AutomatedTesting").Native());
            AZ::SettingsRegistryMergeUtils::MergeSettingsToRegistry_AddRuntimeFilePaths(m_registry);

            // Set the engine root to the temporary directory and re-update the runtime file paths
            auto enginePathKey = AZ::SettingsRegistryInterface::FixedValueString(AZ::SettingsRegistryMergeUtils::BootstrapSettingsRootKey)
                + "/engine_path";
            m_registry.Set(enginePathKey, m_tempDir.GetDirectory());
            AZ::SettingsRegistryMergeUtils::MergeSettingsToRegistry_AddRuntimeFilePaths(m_registry);
        }
    }

    void NormalizePath(AZStd::string&) override
    {
        AZ_Assert(false, "Not implemented");
    }

    void NormalizePathKeepCase(AZStd::string&) override
    {
        AZ_Assert(false, "Not implemented");
    }

    void CalculateBranchTokenForEngineRoot([[maybe_unused]] AZStd::string& token) const override
    {
        AZ_Assert(false, "Not implemented");
    }

    void SetUp() override
    {
        using namespace ::testing;

        ASSERT_TRUE(m_tempDir.IsValid());

        AzFramework::ApplicationRequests::Bus::Handler::BusConnect();
    }

    void TearDown() override
    {
        AzFramework::ApplicationRequests::Bus::Handler::BusDisconnect();
    }

    bool CreateDummyFile(const char* path, const char* seedFileName, AZStd::string_view contents, AZStd::string& subfolderPath) const;

    AZ::IO::LocalFileIO m_fileIO;
    UnitTest::ScopedTemporaryDirectory m_tempDir;
    AZ::SettingsRegistryImpl m_registry;
};