169 lines
3.3 KiB
JavaScript
169 lines
3.3 KiB
JavaScript
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import http from "http";
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import { readdir } from "fs/promises";
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import { stat } from "fs/promises";
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import { readFile } from "fs/promises";
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import { join } from "path";
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import { dirname } from "path";
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import { fileURLToPath } from "url";
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class App
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{
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constructor( )
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{
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const selfPath = fileURLToPath( import.meta.url );
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this.rootPath = dirname( selfPath );
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this.httpServer = null;
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}
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async start( )
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{
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this.httpServer = http.createServer( this.handleRequest.bind( this ) );
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this.httpServer.listen( 4000 );
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console.log("server started on port 4000");
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}
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async handleRequest( req, res )
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{
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const requestedPath = decodeURI( req.url );
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const fullPath = join( this.rootPath, requestedPath );
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const exists = await this.checkFileExists( fullPath );
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if ( !exists )
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{
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res.statusCode = 404;
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res.end( "Not Found" );
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return;
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}
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const stats = await stat( fullPath );
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if ( stats.isDirectory( ) )
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{
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const indexPath = join( fullPath, "index.html" );
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const indexExists = await this.checkFileExists( indexPath );
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if ( indexExists )
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{
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await this.sendFile( indexPath, res );
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return;
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}
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await this.sendDirectoryListing( fullPath, requestedPath, res );
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return;
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}
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await this.sendFile( fullPath, res );
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}
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async sendFile( path, res )
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{
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const contentType = this.getContentType( path );
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const fileData = await readFile( path );
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res.setHeader( "Content-Type", contentType );
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res.statusCode = 200;
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res.end( fileData );
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}
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async sendDirectoryListing( dirPath, urlPath, res )
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{
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const entries = await readdir( dirPath, { withFileTypes : true } );
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let html = "<html><body><h1>Index of " + urlPath + "</h1><ul>";
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let i = 0;
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while ( i < entries.length )
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{
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const e = entries[ i ].name;
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const link = urlPath.endsWith( "/" )
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? urlPath + e
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: urlPath + "/" + e;
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html = html + "<li><a href=\"" + link + "\">" + e + "</a></li>";
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i = i + 1;
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}
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html = html + "</ul></body></html>";
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res.setHeader( "Content-Type", "text/html" );
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res.statusCode = 200;
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res.end( html );
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}
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async checkFileExists( path )
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{
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const exists = await stat( path )
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.then( function( ) { return true; } )
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.catch( function( ) { return false; } );
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return exists;
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}
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getContentType( path )
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{
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const lower = path.toLowerCase( );
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if ( lower.endsWith( ".html" ) ) return "text/html";
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if ( lower.endsWith( ".css" ) ) return "text/css";
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if ( lower.endsWith( ".js" ) ) return "text/javascript";
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if ( lower.endsWith( ".json" ) ) return "application/json";
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if ( lower.endsWith( ".wasm" ) ) return "application/wasm";
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if ( lower.endsWith( ".png" ) ) return "image/png";
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if ( lower.endsWith( ".jpg" ) ) return "image/jpeg";
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if ( lower.endsWith( ".jpeg" ) ) return "image/jpeg";
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if ( lower.endsWith( ".gif" ) ) return "image/gif";
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if ( lower.endsWith( ".svg" ) ) return "image/svg+xml";
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if ( lower.endsWith( ".wgsl" ) ) return "text/plain";
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if ( lower.endsWith( ".txt" ) ) return "text/plain";
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return "application/octet-stream";
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}
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}
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const app = new App( );
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await app.start( );
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