'use strict';

const express = require('express');
const glob = require('glob');
const { match: createPathMatch } = require('path-to-regexp');

(async () => {
    const app = express();
    const routes = await glob('**/*.js', {
        cwd: './routes',
        dot: true,
    });
    const pathMatches = [];
    app.use((req, res, next) => {
        const requestUrl = new URL(req.url, 'https://example.com/');
        let candidateUrl = '';
        let secondCandidateUrl = '';
        for ( const pathMatch in pathMatches ) {
            if ( pathMatches[pathMatch](requestUrl.pathname) ) {
                // If we get an exact match, we don't need to process further.
                return next();
            } else if ( requestUrl.pathname.endsWith('/') && pathMatches[pathMatch](`${requestUrl.pathname}index`) ) {
                // If we end with a /, and the index path matches, lets do the index path, but prioritize the non-index path.
                const secondRequestUrl = new URL(requestUrl);
                secondRequestUrl.pathname = `${requestUrl.pathname}index`;
                candidateUrl = secondRequestUrl.toString().substring(19);
            } else if ( pathMatches[pathMatch](`${requestUrl.pathname}/index`) ) {
                // If we don't end with a /, and the /index path matches, lets do the /index path, but prioritize paths checked previously.
                const secondRequestUrl = new URL(requestUrl);
                secondRequestUrl.pathname = `${requestUrl.pathname}/index`;
                secondCandidateUrl = secondRequestUrl.toString().substring(19);
            }
        }
        if ( candidateUrl !== '' ) {
            req.url = candidateUrl;
            console.log(candidateUrl);
            return next();
        }
        if ( secondCandidateUrl !== '' ) {
            req.url = secondCandidateUrl;
            return next();
        }
        return next();
    } );
    for ( const routeScript in routes ) {
        const route = routes[routeScript].replace(/\.js$/, '');
        console.log(route);
        pathMatches.push( createPathMatch(`/${route}`));
        const routeObj = require(`./routes/${route}`);
        if ( routeObj.get ) {
            app.get(`/${route}`, routeObj.get);
        }
    }
    app.listen(process.env.PORT || 3000);
})();