#include "boost/beast/core/flat_buffer.hpp"
#include "boost/beast/http/serializer.hpp"
#include "http/http_response.hpp"

#include <filesystem>
#include <fstream>
#include <thread>

#include "gtest/gtest.h"
namespace
{
void addHeaders(crow::Response& res)
{
    res.addHeader("myheader", "myvalue");
    res.keepAlive(true);
    res.result(boost::beast::http::status::ok);
}
void verifyHeaders(crow::Response& res)
{
    EXPECT_EQ(res.getHeaderValue("myheader"), "myvalue");
    EXPECT_EQ(res.keepAlive(), true);
    EXPECT_EQ(res.result(), boost::beast::http::status::ok);
}

std::string makeFile()
{
    std::filesystem::path path = std::filesystem::temp_directory_path();
    path /= "bmcweb_http_response_test_XXXXXXXXXXX";
    std::string stringPath = path.string();
    int fd = mkstemp(stringPath.data());
    EXPECT_GT(fd, 0);
    std::string_view sample = "sample text";
    EXPECT_EQ(write(fd, sample.data(), sample.size()), sample.size());
    return stringPath;
}
TEST(HttpResponse, Defaults)
{
    crow::Response res;
    EXPECT_EQ(
        boost::variant2::holds_alternative<crow::Response::string_response>(
            res.response),
        true);
}
TEST(HttpResponse, Headers)
{
    crow::Response res;
    addHeaders(res);
    verifyHeaders(res);
}
TEST(HttpResponse, StringBody)
{
    crow::Response res;
    addHeaders(res);
    std::string_view bodyvalue = "this is my new body";
    res.write({bodyvalue.data(), bodyvalue.length()});
    EXPECT_EQ(*res.body(), bodyvalue);
    verifyHeaders(res);
}
TEST(HttpResponse, FileBody)
{
    crow::Response res;
    addHeaders(res);
    std::string path = makeFile();
    res.openFile(path);

    verifyHeaders(res);
    std::filesystem::remove(path);
}
TEST(HttpResponse, BodyTransitions)
{
    crow::Response res;
    addHeaders(res);
    std::string path = makeFile();
    res.openFile(path);

    EXPECT_EQ(boost::variant2::holds_alternative<crow::Response::file_response>(
                  res.response),
              true);

    verifyHeaders(res);
    res.write("body text");

    EXPECT_EQ(
        boost::variant2::holds_alternative<crow::Response::string_response>(
            res.response),
        true);

    verifyHeaders(res);
    std::filesystem::remove(path);
}
} // namespace