/*********************************************************************
 *
 *  $Id: app.ts 32624 2018-10-10 13:23:29Z seb $
 *
 *  Yoctopuce trivial HTTP server for testing TypeScript/HTML examples;
 *  Also runs a TypeScript watcher in background
 *
 *  You can run it using 'npm run app'
 *
 *  - When run at root of yoctolib-ts, open a browser on the full URL
 *    of the example that you want to open, eg:
 *    http://127.0.0.1:3000/example_html/Doc-Inventory/app.html
 *  - When run within a subdirectory of example_html, the server will
 *    automatically redirect to the current directory app.html
 *
 *********************************************************************/
import 'process';
import * as fs from 'fs';
import * as path from 'path';
import * as http from 'http';
import * as childProcess from 'child_process';
import ts from 'typescript';
const HTTP_PORT = 3000;
const HTTP_ROOT = process.cwd();
const DEMO_PATH = (process.env.INIT_CWD ? process.env.INIT_CWD.slice(HTTP_ROOT.length + 1) : '.');
const DEMO_ROOT = path.join(HTTP_ROOT, DEMO_PATH);
const DEFAULT_FILE = path.join(DEMO_PATH, 'app.html');
const ROOT_URL = 'http://127.0.0.1:' + HTTP_PORT;
const MimeTypes = {
    '.js': 'application/javascript',
    '.ts': 'application/typescript',
    '.json': 'application/json',
    '.xml': 'application/xml',
    '.map': 'application/json',
    '.html': 'text/html',
    '.css': 'text/css',
    '.png': 'image/png',
    '.svg': 'image/svg+xml',
    '.jpg': 'image/jpeg',
    '.jpeg': 'image/jpeg'
};
function listener(message, response) {
    let srvpath;
    try {
        srvpath = new URL(message.url).pathname;
    }
    catch (e) {
        srvpath = '/';
    }
    let relpath = srvpath.slice(1);
    let abspath = path.join(HTTP_ROOT, relpath);
    let extension = path.extname(relpath);
    let mimetype = MimeTypes[extension.toLowerCase()];
    let headers = { 'Content-Type': mimetype };
    // Redirect server root to our demo subdirectory
    if (!relpath) {
        response.writeHead(302, { 'Location': DEFAULT_FILE, 'Content-Type': 'text/plain' });
        response.write("302 Found: [" + DEFAULT_FILE + "]");
        response.end();
        return;
    }
    // Make sure we know about this file
    //console.log('Request for ['+abspath+']');
    let fileexists = fs.existsSync(abspath);
    if (!fileexists) {
        // fallback to gzip-encoded file, if available
        let gzipname = abspath + '.gz';
        fileexists = fs.existsSync(gzipname);
        if (fileexists) {
            headers['Content-Encoding'] = 'gzip';
            abspath = gzipname;
        }
    }
    if (!fileexists || !mimetype) {
        if (!mimetype) {
            response.writeHead(404, { 'Content-Type': 'text/plain' });
            response.write("404 Not Found: unsupported MIME type [" + extension + "]");
        }
        else {
            response.writeHead(404, { 'Content-Type': mimetype });
            response.write("// 404 Not Found: [" + abspath + "]");
        }
        response.end();
        return;
    }
    // Output file to browser at once
    fs.readFile(abspath, (err, data) => {
        if (err)
            throw err;
        headers['Content-Length'] = data.length;
        response.writeHead(200, headers);
        response.write(data, 'utf8');
        response.end();
    });
}
// TypeScript incremental watcher, from Microsoft GitHub page
const formatHost = {
    getCanonicalFileName: (path) => path,
    getCurrentDirectory: ts.sys.getCurrentDirectory,
    getNewLine: () => ts.sys.newLine
};
function reportDiagnostic(diagnostic) {
    let origin = 'Error';
    if (diagnostic.file) {
        const filename = diagnostic.file.fileName;
        origin = filename.slice(filename.indexOf('src/'));
        if (diagnostic.start) {
            const { line } = diagnostic.file.getLineAndCharacterOfPosition(diagnostic.start);
            origin += ':' + line;
        }
    }
    console.error(origin, "-", ts.flattenDiagnosticMessageText(diagnostic.messageText, formatHost.getNewLine()));
}
function reportWatchStatusChanged(diagnostic) {
    console.log(`[build] ` + diagnostic.messageText);
}
function TypeScriptWatcher(rootdir) {
    const configPath = path.join(rootdir, "tsconfig.json");
    const createProgram = ts.createEmitAndSemanticDiagnosticsBuilderProgram;
    const host = ts.createWatchCompilerHost(configPath, {}, ts.sys, createProgram, reportDiagnostic, reportWatchStatusChanged);
    host.afterProgramCreate = (program) => {
        const tsProgram = program.getProgram();
        const allDiagnostics = [
            ...program.getConfigFileParsingDiagnostics(),
            ...program.getGlobalDiagnostics(),
            ...tsProgram.getSourceFiles()
                .filter(f => !f.fileName.includes('.d.ts'))
                .flatMap(f => [
                ...tsProgram.getSyntacticDiagnostics(f),
                ...tsProgram.getSemanticDiagnostics(f),
            ])
        ];
        program.emit();
        if (allDiagnostics.length > 0) {
            allDiagnostics.forEach(reportDiagnostic);
            console.warn(`${allDiagnostics.length} TypeScript error(s) found.`);
            return;
        }
    };
    ts.createWatchProgram(host);
}
// Function to open a URL in the default browser, inspired from https://github.com/sindresorhus/open
function OpenBrowser(target) {
    let command;
    let cliArguments = [];
    let childProcessOptions = {};
    if (process.platform === 'darwin') {
        command = 'open';
        cliArguments = ['--background'];
    }
    else if (process.platform === 'win32') {
        command = process.env.SYSTEMROOT + '\\System32\\WindowsPowerShell\\v1.0\\powershell';
        cliArguments = ['-NoProfile', '-NonInteractive', '–ExecutionPolicy', 'Bypass', '-Command', 'Start'];
        childProcessOptions = { windowsVerbatimArguments: true };
    }
    else {
        command = 'xdg-open';
        childProcessOptions = { stdio: 'ignore', detached: true };
    }
    cliArguments.push(target);
    const subprocess = childProcess.spawn(command, cliArguments, childProcessOptions);
    subprocess.unref();
}
console.info('------------------------------------------------------------------------------------');
console.info('---         This is a small HTTP server to test your TypeScript HTML app');
console.info('---          (source code available in yoctolib-ts/bin/app-server.ts)');
console.info('---');
console.info('--- It will automatically transpile your "app.ts" file into "app.js" when changed');
console.info('---');
console.info('--- Serving files in ' + DEMO_PATH + ' on ' + ROOT_URL);
console.info('------------------------------------------------------------------------------------');
TypeScriptWatcher(DEMO_ROOT);
http.createServer(listener).listen(HTTP_PORT);
OpenBrowser(ROOT_URL);
//# sourceMappingURL=app-server.js.map