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#include "glslang/Public/ResourceLimits.h"
#include "TestFixture.h"

namespace glslangtest {
namespace {

struct TestCaseSpec {
    std::string input;
    std::string config;
    std::string output;
    EShMessages controls;
};

using ConfigTest = GlslangTest<::testing::TestWithParam<TestCaseSpec>>;

TEST_P(ConfigTest, FromFile)
{
    TestCaseSpec testCase = GetParam();
    GlslangResult result;
    result.validationResult = true;

    // Get the contents for input shader and limit configurations.
    std::string shaderContents, configContents;
    tryLoadFile(GlobalTestSettings.testRoot + "/" + testCase.input, "input", &shaderContents);
    tryLoadFile(GlobalTestSettings.testRoot + "/" + testCase.config, "limits config", &configContents);

    // Decode limit configurations.
    TBuiltInResource resources = {};
    {
        const size_t len = configContents.size();
        char* configChars = new char[len + 1];
        memcpy(configChars, configContents.data(), len);
        configChars[len] = 0;
        DecodeResourceLimits(&resources, configChars);
        delete[] configChars;
    }

    // Compile the shader.
    glslang::TShader shader(GetShaderStage(GetSuffix(testCase.input)));
    compile(&shader, shaderContents, "", testCase.controls, &resources);
    result.shaderResults.push_back(
        {testCase.input, shader.getInfoLog(), shader.getInfoDebugLog()});

    // Link the shader.
    glslang::TProgram program;
    program.addShader(&shader);
    program.link(testCase.controls);
    result.linkingOutput = program.getInfoLog();
    result.linkingError = program.getInfoDebugLog();

    std::ostringstream stream;
    outputResultToStream(&stream, result, testCase.controls);

    // Check with expected results.
    const std::string expectedOutputFname =
        GlobalTestSettings.testRoot + "/baseResults/" + testCase.output;
    std::string expectedOutput;
    tryLoadFile(expectedOutputFname, "expected output", &expectedOutput);

    checkEqAndUpdateIfRequested(expectedOutput, stream.str(), expectedOutputFname);
}

// clang-format off
INSTANTIATE_TEST_SUITE_P(
    Glsl, ConfigTest,
    ::testing::ValuesIn(std::vector<TestCaseSpec>({
        {"specExamples.vert", "baseResults/test.conf", "specExamplesConf.vert.out", (EShMessages)(EShMsgAST | EShMsgCascadingErrors)},
        {"100Limits.vert", "100.conf", "100LimitsConf.vert.out", EShMsgCascadingErrors},
    }))
);
// clang-format on

}  // anonymous namespace
}  // namespace glslangtest