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index.js
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index.js
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'use strict';
const _forEach = require('lodash/forEach');
const _isNil = require('lodash/isNil');
const _isArray = require('lodash/isArray');
const _take = require('lodash/take');
const constants = require('../../constants');
const moment = require('moment');
function configure (app, wares, ctx, env) {
var express = require('express')
, api = express.Router();
api.use(wares.compression());
// text body types get handled as raw buffer stream
api.use(wares.rawParser);
// json body types get handled as parsed json
api.use(wares.bodyParser.json({
limit: '50Mb'
}));
// also support url-encoded content-type
api.use(wares.urlencodedParser);
// invoke common middleware
api.use(wares.sendJSONStatus);
api.use(ctx.authorization.isPermitted('api:treatments:read'));
function serveTreatments(req,res, err, results) {
var ifModifiedSince = req.get('If-Modified-Since');
var d1 = null;
const deNormalizeDates = env.settings.deNormalizeDates;
_forEach(results, function clean (t) {
t.carbs = Number(t.carbs);
t.insulin = Number(t.insulin);
if (deNormalizeDates && Object.prototype.hasOwnProperty.call(t, 'utcOffset')) {
const d = moment(t.created_at).utcOffset(t.utcOffset);
t.created_at = d.toISOString(true);
delete t.utcOffset;
}
var d2 = null;
if (Object.prototype.hasOwnProperty.call(t, 'created_at')) {
d2 = new Date(t.created_at);
} else {
if (Object.prototype.hasOwnProperty.call(t, 'timestamp')) {
d2 = new Date(t.timestamp);
}
}
if (d2 == null) { return; }
if (d1 == null || d2.getTime() > d1.getTime()) {
d1 = d2;
}
});
if (!_isNil(d1)) {
res.setHeader('Last-Modified', d1.toUTCString());
if (ifModifiedSince && d1.getTime() <= moment(ifModifiedSince).valueOf()) {
res.status(304).send({
status: 304
, message: 'Not modified'
, type: 'internal'
});
return;
}
}
return res.json(results);
}
// List treatments available
api.get('/treatments', function(req, res) {
var query = req.query;
if (!query.count) {
// If there's a date search involved, default to a higher number of objects
query.count = query.find ? 1000 : 100;
}
const inMemoryData = ctx.cache.treatments;
const canServeFromMemory = inMemoryData && inMemoryData.length >= query.count && Object.keys(query).length == 1 ? true : false;
if (canServeFromMemory) {
serveTreatments(req, res, null, _take(inMemoryData,query.count));
} else {
ctx.treatments.list(query, function(err, results) {
serveTreatments(req,res,err,results);
});
}
});
function config_authed (app, api, wares, ctx) {
function post_response (req, res) {
var treatments = req.body;
if (!_isArray(treatments)) {
treatments = [treatments];
}
for (let i = 0; i < treatments.length; i++) {
const t = treatments[i];
if (!t.created_at) {
t.created_at = new Date().toISOString();
}
ctx.purifier.purifyObject(t);
/*
if (!t.created_at) {
console.log('Trying to create treatment without created_at field', t);
res.sendJSONStatus(res, constants.HTTP_VALIDATION_ERROR, 'Treatments must contain created_at');
return;
}
const d = moment(t.created_at);
if (!d.isValid()) {
console.log('Trying to insert date with invalid created_at', t);
res.sendJSONStatus(res, constants.HTTP_VALIDATION_ERROR, 'Treatments created_at must be an ISO-8601 date');
return;
}
*/
}
ctx.treatments.create(treatments, function(err, created) {
if (err) {
console.log('Error adding treatment', err);
res.sendJSONStatus(res, constants.HTTP_INTERNAL_ERROR, 'Mongo Error', err);
} else {
console.log('REST API treatment created', created);
res.json(created);
}
});
}
api.post('/treatments/', ctx.authorization.isPermitted('api:treatments:create'), post_response);
/**
* @function delete_records
* Delete treatments. The query logic works the same way as find/list. This
* endpoint uses same search logic to remove records from the database.
*/
function delete_records (req, res, next) {
var query = req.query;
if (!query.count) {
query.count = 10
}
// remove using the query
ctx.treatments.remove(query, function(err, stat) {
if (err) {
console.log('treatments delete error: ', err);
return next(err);
}
// yield some information about success of operation
res.json(stat);
return next();
});
}
api.delete('/treatments/:id', ctx.authorization.isPermitted('api:treatments:delete'), function(req, res, next) {
if (!req.query.find) {
req.query.find = {
_id: req.params.id
};
} else {
req.query.find._id = req.params.id;
}
if (req.query.find._id === '*') {
// match any record id
delete req.query.find._id;
}
next();
}, delete_records);
// delete record that match query
api.delete('/treatments/', ctx.authorization.isPermitted('api:treatments:delete'), delete_records);
// update record
api.put('/treatments/', ctx.authorization.isPermitted('api:treatments:update'), function(req, res) {
var data = req.body;
ctx.treatments.save(data, function(err, created) {
if (err) {
res.sendJSONStatus(res, constants.HTTP_INTERNAL_ERROR, 'Mongo Error', err);
console.log('Error saving treatment', err);
} else {
res.json(created);
console.log('Treatment saved', data);
}
});
});
}
if (app.enabled('api') && app.enabled('careportal')) {
config_authed(app, api, wares, ctx);
}
return api;
}
module.exports = configure;