const {
    PermissionFlagsBits,
    MessageFlags
} = require("discord.js");


function getBotAuthorId() {
    return process.env.BOT_AUTHOR_ID ?? null;
}


function isBotAuthor(
    userId
) {
    const authorId =
        getBotAuthorId();

    return Boolean(
        authorId &&
        userId &&
        String(userId) === String(authorId)
    );
}


function isAdministrator(
    interaction
) {
    return (
        interaction
            ?.memberPermissions
            ?.has(
                PermissionFlagsBits.Administrator
            )
        ??
        false
    );
}


function canUseAdminCommands(
    interaction
) {
    return (
        isBotAuthor(
            interaction.user.id
        )
        ||
        isAdministrator(
            interaction
        )
    );
}


async function requireAdminAccess(
    interaction
) {
    if (
        canUseAdminCommands(
            interaction
        )
    ) {
        return true;
    }


    const payload = {
        content:
            "You don't have permission to use this command.",

        flags:
            MessageFlags.Ephemeral
    };


    if (
        interaction.replied ||
        interaction.deferred
    ) {
        await interaction.followUp(
            payload
        );
    }

    else {
        await interaction.reply(
            payload
        );
    }


    return false;
}


module.exports = {
    getBotAuthorId,
    isBotAuthor,
    isAdministrator,
    canUseAdminCommands,
    requireAdminAccess
};