/*
 * Copyright (c) 2026 Markil 3. All rights reserved.
 */
import fs from "fs";
import bcrypt from "bcrypt";
import {config, AUTH_KEY, AUTH_KEY_HASH} from './config.js';

/**
 * Checks to see if a request is allowed, based on whether it has the appropriate authentication headers.
 * @param request - The request to verify.
 * @return A promise that resolves to True if the headers are valid, false otherwise.
 */
async function isAuthenticated(request)
{
    if (config[AUTH_KEY_HASH] || config[AUTH_KEY])
    {
        let authHeader = request.get('Authorization'), encodedCredentials, credentials;
        if (!authHeader)
        {
            return false;
        }
        if (authHeader.startsWith("Basic "))
        {
            encodedCredentials = authHeader.substring('Basic '.length);
            if (config[AUTH_KEY_HASH])
            {
                return await bcrypt.compare(encodedCredentials, config[AUTH_KEY_HASH]);
            }
            else
            {
                return encodedCredentials == config[AUTH_KEY];
            }
        }
        else
        {
            return false;
        }
    }
    else
    {
        /*
         * We do not have authentication keys configured. We can let anything through.
         */
        return true;
    }
}

function getMime(filePath)
{
    let pathExt;
    if (filePath.lastIndexOf('.') > -1)
    {
        pathExt = filePath.substring(filePath.lastIndexOf('.')).toLowerCase();
    }
    else
    {
        pathExt = '';
        return "text/plain";
    }
    if (pathExt == ".html" || pathExt == ".htm")
    {
        return "text/html";
    }
    if (pathExt == ".json")
    {
        return "application/json";
    }
    else if (pathExt == ".css")
    {
        return "text/css";
    }
    else if (pathExt == ".js")
    {
        return "text/javascript";
    }
    else if (pathExt == ".eot")
    {
        return "application/vnd.ms-fontobject";
    }
    else if (pathExt == ".otf")
    {
        return "font/otf";
    }
    else if (pathExt == ".ttf")
    {
        return "font/ttf";
    }
    else if (pathExt == ".woff")
    {
        return "font/woff";
    }
    else if (pathExt == ".woff2")
    {
        return "font/woff2";
    }
    else if (pathExt == ".png")
    {
        return "image/png";
    }
    else if (pathExt == ".apng")
    {
        return "image/apng";
    }
    else if (pathExt == ".jpg" || pathExt == ".jpeg")
    {
        return "image/jpeg";
    }
    else if (pathExt == ".gif")
    {
        return "image/gif";
    }
    else if (pathExt == ".bmp")
    {
        return "image/bmp";
    }
    else if (pathExt == ".webp")
    {
        return "image/webp";
    }
    else if (pathExt == ".avif")
    {
        return "image/avif";
    }
    else if (pathExt == ".ico")
    {
        return "image/vnd.microsoft.icon";
    }
    else if (pathExt == ".svg")
    {
        return "image/svg+xml";
    }
    else if (pathExt == ".aac")
    {
        return "audio/aac";
    }
    else if (pathExt == ".mp3")
    {
        return "audio/mpeg";
    }
    else if (pathExt == ".ogg" || pathExt == ".oga" || pathExt == ".opus")
    {
        return "audio/ogg";
    }
    else if (pathExt == ".wav")
    {
        return "audio/wav";
    }
    else if (pathExt == ".weba")
    {
        return "audio/webm";
    }
    else if (pathExt == ".avi")
    {
        return "video/x-msvideo";
    }
    else if (pathExt == ".mp4")
    {
        return "video/mp4";
    }
    else if (pathExt == ".mpeg")
    {
        return "video/mpeg";
    }
    else if (pathExt == ".ogv")
    {
        return "video/ogg";
    }
    else if (pathExt == ".webm")
    {
        return "video/webm";
    }
    else if (pathExt == ".md")
    {
        return "text/markdown";
    }
    else if (pathExt == ".azw")
    {
        return "application/vnd.amazon.ebook";
    }
    else if (pathExt == ".epub")
    {
        return "application/epub+zip";
    }
    else if (pathExt == ".doc")
    {
        return "application/msword";
    }
    else if (pathExt == ".docx")
    {
        return "application/vnd.openxmlformats-officedocument.wordprocessingml.document";
    }
    else if (pathExt == ".odt")
    {
        return "application/vnd.oasis.opendocument.text";
    }
    else if (pathExt == ".pdf")
    {
        return "application/pdf";
    }
    else if (pathExt == ".rtf")
    {
        return "application/rtf";
    }
    else
    {
        return "text/plain";
    }
}

export {
    isAuthenticated,
    getMime
};