#include "pch.h"
#include "vcpkg_Commands.h"
#include "vcpkg_System.h"
#include "vcpkg_Input.h"
#include "vcpkg_Environment.h"

namespace vcpkg::Commands::Edit
{
    void perform_and_exit(const vcpkg_cmd_arguments& args, const vcpkg_paths& paths)
    {
        static const std::string example = Commands::Help::create_example_string("edit zlib");
        args.check_exact_arg_count(1, example);
        args.check_and_get_optional_command_arguments({});
        const std::string port_name = args.command_arguments.at(0);

        const fs::path portpath = paths.ports / port_name;
        Checks::check_exit(fs::is_directory(portpath), R"(Could not find port named "%s")", port_name);

        // Find the user's selected editor
        std::wstring env_EDITOR;

        if (env_EDITOR.empty())
        {
            const optional<std::wstring> env_EDITOR_optional = System::get_environmental_variable(L"EDITOR");
            if (env_EDITOR_optional)
            {
                env_EDITOR = *env_EDITOR_optional;
            }
        }

        if (env_EDITOR.empty())
        {
            const fs::path CODE_EXE_PATH = Environment::get_ProgramFiles_32_bit() / "Microsoft VS Code/Code.exe";
            if (fs::exists(CODE_EXE_PATH))
            {
                env_EDITOR = CODE_EXE_PATH;
            }
        }

        if (env_EDITOR.empty())
        {
            static const std::array<const wchar_t*, 4> regkeys = {
                LR"(SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Uninstall\{C26E74D1-022E-4238-8B9D-1E7564A36CC9}_is1)",
                LR"(SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\{C26E74D1-022E-4238-8B9D-1E7564A36CC9}_is1)",
                LR"(SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Uninstall\{F8A2A208-72B3-4D61-95FC-8A65D340689B}_is1)",
                LR"(SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\{F8A2A208-72B3-4D61-95FC-8A65D340689B}_is1)",
            };
            for (auto&& keypath : regkeys)
            {
                auto code_installpath = System::get_registry_string(HKEY_LOCAL_MACHINE, keypath, L"InstallLocation");
                if (code_installpath)
                {
                    auto p = fs::path(*code_installpath) / "Code.exe";
                    if (fs::exists(p))
                    {
                        env_EDITOR = p.native();
                        break;
                    }
                }
            }
        }

        if (env_EDITOR.empty())
        {
            Checks::exit_with_message("Visual Studio Code was not found and the environment variable EDITOR is not set");
        }

        std::wstring cmdLine = Strings::wformat(LR"("%s" "%s" "%s" -n)", env_EDITOR, portpath.native(), (portpath / "portfile.cmake").native());
        exit(System::cmd_execute(cmdLine));
    }
}