@knax/backend-utils/lib/app.js

"use strict";
var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
    function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }
    return new (P || (P = Promise))(function (resolve, reject) {
        function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
        function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
        function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }
        step((generator = generator.apply(thisArg, _arguments || [])).next());
    });
};
Object.defineProperty(exports, "__esModule", { value: true });
const cors = require("@koa/cors");
const Koa = require("koa");
const Router = require("koa-router");
const path = require("path");
const logger_1 = require("./helper/logger");
// import initializeModules from "./modules";
const onFinished = require("on-finished");
const server_error_1 = require("./response/server_error");
const fs = require("fs");
const httpLog = logger_1.log.child({
    type: 'http'
});
exports.initializeApp = ({ moduleDirectory }) => {
    const app = new Koa();
    const router = new Router();
    app.use((ctx, next) => __awaiter(void 0, void 0, void 0, function* () {
        try {
            yield next();
        }
        catch (err) {
            logger_1.log.error(err);
            server_error_1.serverErrorResponse(ctx);
        }
    }));
    app.use(cors());
    const modules = (fs.readdirSync(moduleDirectory))
        .filter((it) => it.endsWith('.ts'))
        .filter((it) => it !== 'index.ts')
        .map((it) => it.replace('.ts', ''));
    modules.map((module) => {
        const moduleController = require(path.join(moduleDirectory, module)).default;
        const controller = new moduleController();
        router.use(controller.__routeName || '', controller.__router.routes(), controller.__router.allowedMethods());
    });
    app.use((ctx, next) => {
        const startTime = new Date().getTime();
        let err = null;
        return next().catch((e) => {
            err = e;
        }).then(() => {
            onFinished(ctx.response.res, () => {
                const duration = Date.now() - startTime;
                const level = ctx.status >= 500 ? 'error' : ctx.status >= 400 ? 'warn' : 'info';
                httpLog[level]({
                    method: ctx.request.method,
                    path: ctx.path,
                    status: ctx.status,
                    duration
                }, `  --> ${ctx.request.method} ${ctx.request.originalUrl} ${ctx.request.status} ${duration}`);
            });
            if (err) {
                throw err; // rethrow
            }
        });
    });
    app.use(router.routes());
    app.use(router.allowedMethods());
    return app;
};
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