58 lines
1.6 KiB
JavaScript
58 lines
1.6 KiB
JavaScript
'use strict';
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const express = require('express');
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const InteroperableError = require('./InteroperableError');
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function safeHandler(handler) {
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return function(req, res) {
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handler(req, res).catch(error => res.status(500).send(error.message));
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};
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}
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function safeJSONHandler(handler) {
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return function(req, res) {
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handler(req, res).catch(error => {
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const resp = {
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message: error.message
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};
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if (error instanceof InteroperableError) {
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resp.type = error.type;
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resp.data = error.data;
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}
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res.status(500).json(resp);
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});
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};
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}
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function replaceLast(elems, replaceFn) {
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if (elems.length === 0) {
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return elems;
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}
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const lastElem = elems[elems.size - 1];
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const replacement = replaceFn(lastElem);
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elems[elems.size - 1] = replacement;
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return elems;
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}
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function create() {
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const router = new express.Router();
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router.getAsync = (path, ...handlers) => router.get(path, ...replaceLast(handlers, safeHandler));
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router.getAsyncJSON = (path, ...handlers) => router.get(path, ...replaceLast(handlers, safeJSONHandler));
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router.postAsyncJSON = (path, ...handlers) => router.post(path, ...replaceLast(handlers, safeJSONHandler));
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router.putAsyncJSON = (path, ...handlers) => router.put(path, ...replaceLast(handlers, safeJSONHandler));
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router.deleteAsyncJSON = (path, ...handlers) => router.delete(path, ...replaceLast(handlers, safeJSONHandler));
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return router;
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}
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module.exports = {
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create
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};
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