#include "pch.h"

#include "Paragraphs.h"
#include "SortedVector.h"
#include "vcpkg_Commands.h"
#include "vcpkg_Maps.h"
#include "vcpkg_System.h"

namespace vcpkg::Commands::Autocomplete
{
    void perform_and_exit(const VcpkgCmdArguments& args, const VcpkgPaths& paths)
    {
        static const std::string EXAMPLE =
            Strings::format("The argument should be a command line to autocomplete.\n%s",
                            Commands::Help::create_example_string("autocomplete install z"));

        args.check_min_arg_count(1, EXAMPLE);
        args.check_max_arg_count(2, EXAMPLE);
        args.check_and_get_optional_command_arguments({});

        const std::string requested_command = args.command_arguments.at(0);
        const std::string start_with =
            args.command_arguments.size() > 1 ? args.command_arguments.at(1) : Strings::EMPTY;

        auto sources_and_errors = Paragraphs::try_load_all_ports(paths.get_filesystem(), paths.ports);
        auto& source_paragraphs = sources_and_errors.paragraphs;

        const auto& istartswith = Strings::case_insensitive_ascii_starts_with;

        std::vector<std::string> results;
        for (const auto& source_control_file : source_paragraphs)
        {
            auto&& sp = *source_control_file->core_paragraph;

            if (istartswith(sp.name, start_with))
            {
                results.push_back(sp.name);
            }
        }

        System::println(Strings::join(" ", results));

        auto all_ports = Paragraphs::try_load_all_ports(paths.get_filesystem(), paths.ports);

        Checks::exit_success(VCPKG_LINE_INFO);
    }
}