// Copyright 2021 The Tint Authors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

#include "gmock/gmock.h"
#include "src/tint/program.h"

// TODO(crbug.com/tint/1580): Remove when 'const' is fully implemented.
#if TINT_BUILD_WGSL_READER
#include "src/tint/reader/wgsl/parser_impl.h"
#endif

#if TINT_BUILD_SPV_READER
#include "src/tint/reader/spirv/parser_impl_test_helper.h"
#endif

#if TINT_BUILD_WGSL_WRITER
#include "src/tint/writer/wgsl/generator.h"
#endif

namespace {

void TintInternalCompilerErrorReporter(const tint::diag::List& diagnostics) {
    FAIL() << diagnostics.str();
}

struct Flags {
    bool spirv_reader_dump_converted = false;

    bool parse(int argc, char** argv) {
        bool errored = false;
        for (int i = 1; i < argc && !errored; i++) {
            auto match = [&](std::string name) { return name == argv[i]; };

            if (match("--dump-spirv")) {
                spirv_reader_dump_converted = true;
            } else {
                std::cout << "Unknown flag '" << argv[i] << "'" << std::endl;
                return false;
            }
        }
        return true;
    }
};

}  // namespace

// Entry point for tint unit tests
int main(int argc, char** argv) {
    testing::InitGoogleMock(&argc, argv);

// TODO(crbug.com/tint/1580): Remove when 'const' is fully implemented.
#if TINT_BUILD_WGSL_READER
    tint::reader::wgsl::ParserImpl::EnableConst();
#endif

#if TINT_BUILD_WGSL_WRITER
    tint::Program::printer = [](const tint::Program* program) {
        auto result = tint::writer::wgsl::Generate(program, {});
        if (!result.error.empty()) {
            return "error: " + result.error;
        }
        return result.wgsl;
    };
#endif  // TINT_BUILD_WGSL_WRITER

    Flags flags;
    if (!flags.parse(argc, argv)) {
        return -1;
    }

#if TINT_BUILD_SPV_READER
    if (flags.spirv_reader_dump_converted) {
        tint::reader::spirv::test::DumpSuccessfullyConvertedSpirv();
    }
#endif  // TINT_BUILD_SPV_READER

    tint::SetInternalCompilerErrorReporter(&TintInternalCompilerErrorReporter);

    auto res = RUN_ALL_TESTS();

    return res;
}