/*
 * libfud
 * Copyright 2024 Dominick Allen
 *
 * 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 "fud_csv.hpp"
#include "fud_print.hpp"

#include "gtest/gtest.h"

namespace fud {

const StringView happyCsvFilename{u8"fud-happy-test.csv"};

const StringView happyData{
    u8"foo,bar,baz\n"
    u8"1,Unquoted Text,\"Quoted Text with embedded \"\" quote and embedded newline \n"
    u8"see\"\n,,\"Prior two fields are empty\"\n"};

auto writeHappyCsv() -> FudStatus
{
    auto fileResult{RegularFile::create(
        happyCsvFilename,
        FileAccessMode::Write,
        OpenFlags{OpenFlagEnum::Truncate},
        PermUserRwGroupRead,
        false,
        NullOpt)};
    if (fileResult.isError()) {
        debugPrint(u8"Error opening file: {}\n", FudStatusToString(fileResult.getError()));
        return fileResult.takeError();
    }
    auto file{fileResult.takeOkay()};

    auto writeResult = file.write(reinterpret_cast<const std::byte*>(happyData.data()), happyData.length());
    if (writeResult.status != FudStatus::Success) {
        return writeResult.status;
    }

    if (writeResult.bytesDrained != happyData.length()) {
        return FudStatus::Failure;
    }

    return FudStatus::Success;
}

TEST(FudCsv, ParseCsvFromFilename)
{
    Csv csv{Csv::makeDefault()};

    ASSERT_EQ(writeHappyCsv(), FudStatus::Success);

    debugPrint(u8"Wrote happy data:\n-----\n{}\n-----\n", happyData);

    auto parseStatus = Csv::parseFromFilename(csv, NullOpt, happyCsvFilename);
    if (parseStatus != FudStatus::Success) {
        debugPrint(u8"Error parsing file: {}\n", FudStatusToString(parseStatus));
    }
    ASSERT_EQ(parseStatus, FudStatus::Success);
}

} // namespace fud