// SPDX-License-Identifier: MPL-2.0
#include "sequa/3d/null_adapter.hpp"

#include <doctest/doctest.h>

using namespace sequa::three_d;

TEST_CASE("NullEngineAdapter : cycle de vie")
{
    NullEngineAdapter adapter;
    CHECK_FALSE(adapter.running());
    CHECK(adapter.apply({1, {}})->code == Error::Code::not_started);

    EngineConfig config;
    config.headless = true;
    REQUIRE_FALSE(adapter.start(config));
    CHECK(adapter.running());
    CHECK(adapter.start(config)->code == Error::Code::already_started);

    adapter.stop();
    CHECK_FALSE(adapter.running());
}

TEST_CASE("NullEngineAdapter : image rendue avec la version de scene courante")
{
    NullEngineAdapter adapter;
    EngineConfig config;
    config.headless = true;
    REQUIRE_FALSE(adapter.start(config));
    REQUIRE_FALSE(adapter.apply({3, {CreateObject{1, {}, {}}}}));

    FrameRequest request;
    request.frame_index = 42;
    request.width = 640;
    request.height = 360;
    request.buffers = {FrameBuffer::color, FrameBuffer::depth};
    const FrameOutcome outcome = adapter.render_frame(request);
    REQUIRE(std::holds_alternative<FrameResult>(outcome));
    const auto& result = std::get<FrameResult>(outcome);
    CHECK(result.frame_index == 42);
    CHECK(result.world_version == 3);
    CHECK(result.produced == request.buffers);
}

TEST_CASE("NullEngineAdapter : capacites restreintes respectees")
{
    NullEngineAdapter adapter(EngineCapabilities{"restreint", "0", {FrameBuffer::color}, true, false, 0, 0});
    EngineConfig config;
    config.headless = true;
    CHECK(adapter.start(config)->code == Error::Code::unsupported);

    config.headless = false;
    REQUIRE_FALSE(adapter.start(config));
    FrameRequest request;
    request.width = 64;
    request.height = 64;
    request.buffers = {FrameBuffer::object_ids};
    const FrameOutcome outcome = adapter.render_frame(request);
    REQUIRE(std::holds_alternative<Error>(outcome));
    CHECK(std::get<Error>(outcome).code == Error::Code::unsupported);
}