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const
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Koa = require('koa'),
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morgan = require('koa-morgan'),
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Body = require('koa-body'),
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Router = require('koa-router'),
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sockjs = require('sockjs');
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const options = require('../options');
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let http = options.listen.https ? require('https') : require('http');
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let app = new Koa();
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let server = http.createServer(app.callback());
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app.keys = options.session.keys;
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app.use(Body({
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multipart: true,
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formidable: {
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maxFileSize: 256 * 1024 * 1024
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}
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}));
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let router = new Router();
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let m = [];
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/**
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* @param {import('koa').Middleware} middleware
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* @param {boolean} installForSocket
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*/
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function MIDDLEWARE(middleware, installForSocket = false) {
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app.use(middleware);
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if (installForSocket) m.push(middleware);
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}
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/**
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* @param {string} route
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* @param {...import('koa').Middleware} handler
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*/
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function GET(route, ...handler) {
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router.get(route, ...handler);
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}
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/**
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* @param {string} route
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* @param {...import('koa').Middleware} handler
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*/
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function POST(route, ...handler) {
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router.post(route, ...handler);
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}
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/**
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* @callback SockJSHandler
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* @param {import('sockjs').Connection} conn
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*/
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/**
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* @param {string} prefix
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* @param {SockJSHandler} handler
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*/
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function SOCKET(prefix, middlewares, handler) {
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const sock = sockjs.createServer({ prefix });
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sock.on('connection', async conn => {
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conn.cookies = {
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get(name) {
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return conn.cookies[name];
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},
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set() { }
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};
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conn.state = {};
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conn.params = {};
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conn.request = {
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headers: conn.headers
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};
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let p = conn.url.split('?')[1].split('&');
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for (let i in p) p[i] = p[i].split('=');
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for (let i in p) conn.params[p[i][0]] = decodeURIComponent(p[i][1]);
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await new Promise((resolve, reject) => {
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conn.once('data', msg => {
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for (let i of msg.split(';')) {
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i = i.trim().split('=');
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conn.cookies[i[0]] = i[1];
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}
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resolve();
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});
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setTimeout(reject, 5000);
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});
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for (let i of m)
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await new Promise((resolve, reject) => {
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i(conn, resolve).catch(reject);
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});
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for (let i of middlewares)
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await new Promise((resolve, reject) => {
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i(conn, resolve).catch(reject);
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});
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conn.send = data => {
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conn.write(JSON.stringify(data));
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};
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handler(conn);
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});
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sock.installHandlers(server);
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}
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exports.MIDDLEWARE = MIDDLEWARE;
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exports.GET = GET;
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exports.POST = POST;
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exports.SOCKET = SOCKET;
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exports.start = function start() {
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app.use(morgan(':method :url :status :res[content-length] - :response-time ms'));
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app.use(router.routes()).use(router.allowedMethods());
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server.listen(options.listen.port);
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console.log('Server listening at: %s', options.listen.port);
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};
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