parse POST json bodies

.env.example

 #KUS_GENERATOR_BACKEND=https://api.new.local.vkusvill.testin.ru
 KUS_GENERATOR_BACKEND=https://api.vkusvill.flexlab.pro
-KUS_GENERATOR_PORT=4001
\ No newline at end of file
+KUS_GENERATOR_PORT=1001
\ No newline at end of file

api.js

@@ -34,7 +34,7 @@ const print = function(data) {
   return tpls.index.replace('$DATA$', data)
 };
 
-const api = [require('./src/api/generateRandom'), require('./src/api/crud')].reduce((store, el)=>{
+const api = [require('./src/api/generateRandom'),require('./src/api/log'), require('./src/api/crud')].reduce((store, el)=>{
   return Object.assign(store, el)
 }, {});
 const {api2html, api2routes} = require('./src/apiMappers.js');

public/log/5.jsons

+{"type":"ANSWER","date":1591122005507,"data":{"state":{"quizCount":30,"currentChain":0,"rights":1,"maxChain":1,"currentQuestion":2},"answers":{"answers":[{"correct":false,"text":"Маленькой игрушкой","isUserChoice":true,"isCorrect":false,"isInCorrect":true,"type":"radio"},{"correct":false,"text":"Советами психолога","isUserChoice":false,"isCorrect":false,"isInCorrect":false,"type":"radio"},{"correct":true,"text":"Игрой","isUserChoice":false,"isCorrect":false,"isInCorrect":true,"type":"radio"}],"right":false}}}
+{"type":"ANSWER","date":1591122006659,"data":{"state":{"quizCount":30,"currentChain":0,"rights":1,"maxChain":1,"currentQuestion":3},"answers":{"answers":[{"correct":false,"text":"Подбор товара","isUserChoice":false,"isCorrect":false,"isInCorrect":false,"type":"radio"},{"correct":true,"text":"Ноль на весах","isUserChoice":false,"isCorrect":false,"isInCorrect":true,"type":"radio"},{"correct":false,"text":"Один раз \"минус 20 гр\"","isUserChoice":true,"isCorrect":false,"isInCorrect":true,"type":"radio"},{"correct":false,"text":"2 раза \"минус 20 грамм\"","isUserChoice":false,"isCorrect":false,"isInCorrect":false,"type":"radio"}],"right":false}}}

src/api/log.js

+var fs = require('fs');
+module.exports = {
+  '/api/log/start/:userID': {
+    options: {
+      userID: { required: true, description: 'ID of user', type: Number }
+    },
+    method: 'POST',
+    summary: 'Get list of new cards',
+    fn: async function(args) {
+      fs.writeFile('./public/log/'+args.userID+'.jsons', JSON.stringify({
+          type: 'START', date: +new Date(), data: args.body})+'\n', {'flag':'a'},
+        function(err) {
+          console.log(err);
+        });
+
+      return true;
+    }
+  },
+  '/api/log/step/:userID': {
+    options: {
+      userID: { required: true, description: 'ID of user', type: Number }
+    },
+    method: 'POST',
+    summary: 'Get list of new cards',
+    fn: async function(args) {
+      fs.writeFile('./public/log/'+args.userID+'.jsons', JSON.stringify({
+          type: 'ANSWER', date: +new Date(), data: args.body})+'\n', {'flag':'a'},
+        function(err) {
+          console.log(err);
+        });
+
+      return true;
+    }
+  }
+};
\ No newline at end of file

src/apiMappers.js

@@ -162,6 +162,31 @@ ${opt.required?'<span class="api-option-required">Required</span>': '<span class
           return res.end('Errors:\n' +e.map(e=>'\t'+e).join('\n'))
         }
 
+        if(req.method === 'POST'){
+          try{
+            args.body = await new Promise( function( r, j ){
+              var body = '';
+
+              req.on('data', function (data) {
+                body += data;
+
+                // Too much POST data, kill the connection!
+                // 1e6 === 1 * Math.pow(10, 6) === 1 * 1000000 ~~~ 1MB
+                if (body.length > 1e6){
+                  req.connection.destroy();
+                  j();
+                }
+              });
+
+              req.on('end', function () {
+                r(JSON.parse(body));
+              });
+            } )
+          }catch(e){
+            args.body = null;
+          }
+        }
+
         console.log(api.method, key, JSON.stringify(args));
 
         res.header("Content-Type", "application/json; charset=utf-8");