#include "init_subcommand.hpp"

#include <filesystem>

#include "../wrapper/repository_wrapper.hpp"

init_subcommand::init_subcommand(const libgit2_object&, CLI::App& app)
{
    auto* sub = app.add_subcommand("init", "Explanation of init here");

    sub->add_flag("--bare", m_bare, "info about bare arg");

    // If directory not specified, uses cwd.
    sub->add_option("directory", m_directory, "info about directory arg")
        ->check(CLI::ExistingDirectory | CLI::NonexistentPath)
        ->default_val(get_current_git_path());
    sub->add_option(
        "-b,--initial-branch",
        m_branch,
        "Use <branch-name> for the initial branch in the newly created repository. If not specified, fall back to the default name."
    );

    sub->callback(
        [this]()
        {
            this->run();
        }
    );
}

void init_subcommand::run()
{
    std::filesystem::path target_dir = m_directory;
    bool reinit = std::filesystem::exists(target_dir / ".git" / "HEAD");

    repository_wrapper repo = [this]()
    {
        if (m_branch.empty())
        {
            return repository_wrapper::init(m_directory, m_bare);
        }
        else
        {
            git_repository_init_options opts = GIT_REPOSITORY_INIT_OPTIONS_INIT;
            if (m_bare)
            {
                opts.flags |= GIT_REPOSITORY_INIT_BARE;
            }
            opts.initial_head = m_branch.c_str();

            return repository_wrapper::init_ext(m_directory, &opts);
        }
    }();

    std::string path = repo.path();

    if (reinit)
    {
        std::cout << "Reinitialized existing Git repository in " << path << std::endl;
    }
    else
    {
        std::cout << "Initialized empty Git repository in " << path << std::endl;
    }
}