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| 1 | +const Koa = require('koa'); |
| 2 | + |
| 3 | +const bodyParser = require('koa-bodyparser'); |
| 4 | + |
| 5 | +const router = require('koa-router')(); |
| 6 | + |
| 7 | +const fs = require('fs'); |
| 8 | + |
| 9 | +const app = new Koa(); |
| 10 | + |
| 11 | +// log request URL: |
| 12 | +app.use(async (ctx, next) => { |
| 13 | + console.log(`Process ${ctx.request.method} ${ctx.request.url}...`); |
| 14 | + await next(); |
| 15 | +}); |
| 16 | + |
| 17 | +// parse request body: |
| 18 | +app.use(bodyParser()); |
| 19 | + |
| 20 | +// add url-route in /controllers: |
| 21 | +function addMapping(router, mapping) { |
| 22 | + for (var url in mapping) { |
| 23 | + if (url.startsWith('GET ')) { |
| 24 | + var path = url.substring(4); |
| 25 | + router.get(path, mapping[url]); |
| 26 | + console.log(`register URL mapping: GET ${path}`); |
| 27 | + } else if (url.startsWith('POST ')) { |
| 28 | + var path = url.substring(5); |
| 29 | + router.post(path, mapping[url]); |
| 30 | + console.log(`register URL mapping: POST ${path}`); |
| 31 | + } else { |
| 32 | + console.log(`invalid URL: ${url}`); |
| 33 | + } |
| 34 | + } |
| 35 | +} |
| 36 | + |
| 37 | +function addControllers(router) { |
| 38 | + var files = fs.readdirSync(__dirname + '/controllers'); |
| 39 | + var js_files = files.filter((f) => { |
| 40 | + return f.endsWith('.js'); |
| 41 | + }, files); |
| 42 | + |
| 43 | + for (var f of js_files) { |
| 44 | + console.log(`process controller: ${f}...`); |
| 45 | + let mapping = require(__dirname + '/controllers/' + f); |
| 46 | + addMapping(router, mapping); |
| 47 | + } |
| 48 | +} |
| 49 | + |
| 50 | +addControllers(router); |
| 51 | + |
| 52 | +// add router middleware: |
| 53 | +app.use(router.routes()); |
| 54 | + |
| 55 | +app.listen(3000); |
| 56 | +console.log('app started at port 3000...'); |
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