From 4d4d8f001db3a8d2025763819ef171a11505a6cf Mon Sep 17 00:00:00 2001
From: tomsmeding <tom.smeding@gmail.com>
Date: Thu, 23 Nov 2017 22:19:49 +0100
Subject: zelfoverhoor: Editing and various improvements

---
 modules/zelfoverhoor/zelfoverhoor.js | 88 +++++++++++++++++++++++++++---------
 1 file changed, 66 insertions(+), 22 deletions(-)

(limited to 'modules/zelfoverhoor/zelfoverhoor.js')

diff --git a/modules/zelfoverhoor/zelfoverhoor.js b/modules/zelfoverhoor/zelfoverhoor.js
index bfc9781..8f87f75 100644
--- a/modules/zelfoverhoor/zelfoverhoor.js
+++ b/modules/zelfoverhoor/zelfoverhoor.js
@@ -5,6 +5,8 @@ var moddir;
 
 var accounts=require("./accounts.json");
 
+var SHUFFLE_QUESTIONS=false;
+
 // {<id>: {q: "question", a: "answer"}}
 var questiondb={};
 // {<id>: {id, name, description, questions: [<question_id>]}}
@@ -55,6 +57,31 @@ function shuffle(a){
 	}
 }
 
+function checkQsetJson(json,errfunc){
+	var qset;
+	try {
+		qset=JSON.parse(json);
+	} catch(e){
+		errfunc("Invalid json received");
+		return null;
+	}
+	if(!qset.name||typeof qset.name!="string"||
+			!qset.description||typeof qset.description!="string"||
+			!qset.questions||!Array.isArray(qset.questions)){
+		errfunc("Invalid data received");
+		return null;
+	}
+	var i;
+	for(i=0;i<qset.questions.length;i++){
+		if(!qset.questions[i].q||typeof qset.questions[i].q!="string"||
+				!qset.questions[i].a||typeof qset.questions[i].a!="string"){
+			errfunc("Invalid question data received");
+			return null;
+		}
+	}
+	return qset;
+}
+
 module.exports=function(app,io,_moddir){
 	moddir=_moddir;
 
@@ -85,7 +112,7 @@ module.exports=function(app,io,_moddir){
 			list.push(questiondb[qset.questions[i]]);
 		}
 		var resset={"id": qset.id, "name": qset.name, "description": qset.description, "questions": list};
-		// shuffle(resset.questions);
+		if(SHUFFLE_QUESTIONS)shuffle(resset.questions);
 		fs.readFile(moddir+"/qs.html",function(err,data){
 			if(err)throw err;
 			res.send(String(data)
@@ -93,6 +120,19 @@ module.exports=function(app,io,_moddir){
 				.replace("/*###QUESTIONSET###*/",JSON.stringify(resset)));
 		});
 	});
+	app.get("/zelfoverhoor/qsdata/:id",function(req,res){
+		var qset=questionsets[req.params.id];
+		if(qset==null){
+			res.status(404).send("ID not found");
+			return;
+		}
+		var list=[];
+		for(var i=0;i<qset.questions.length;i++){
+			list.push(questiondb[qset.questions[i]]);
+		}
+		var resset={"id": qset.id, "name": qset.name, "description": qset.description, "questions": list};
+		res.send(JSON.stringify(resset));
+	});
 
 	app.use(["/zelfoverhoor/docent","/zelfoverhoor/docent/*"],cmn.authgen(accounts));
 	app.get("/zelfoverhoor/docent",function(req,res){
@@ -114,27 +154,8 @@ module.exports=function(app,io,_moddir){
 		res.send(JSON.stringify(list));
 	});
 	app.post("/zelfoverhoor/docent/addset",function(req,res){
-		var qset;
-		try {
-			qset=JSON.parse(req.body);
-		} catch(e){
-			res.status(400).send("Invalid json received");
-			return;
-		}
-		if(!qset.name||typeof qset.name!="string"||
-				!qset.description||typeof qset.description!="string"||
-				!qset.questions||!Array.isArray(qset.questions)){
-			res.status(400).send("Invalid data received");
-			return;
-		}
-		var i;
-		for(i=0;i<qset.questions.length;i++){
-			if(!qset.questions[i].q||typeof qset.questions[i].q!="string"||
-					!qset.questions[i].a||typeof qset.questions[i].a!="string"){
-				res.status(400).send("Invalid question data received");
-				return;
-			}
-		}
+		var qset=checkQsetJson(req.body,function(err){res.status(400).send(err);});
+		if(qset==null)return;
 		var ids=[],id;
 		for(i=0;i<qset.questions.length;i++){
 			id=uniqidstr(function(s){return questiondb[s]==null;});
@@ -150,6 +171,28 @@ module.exports=function(app,io,_moddir){
 		persistDB();
 		res.send(setid);
 	});
+	app.post("/zelfoverhoor/docent/editset/:id",function(req,res){
+		var setid=req.params.id;
+		if(questionsets[setid]==null){
+			res.status(404).send("ID not found");
+			return;
+		}
+		if(userlists[req.authuser].indexOf(setid)==-1){
+			res.status(403).send("ID does not belong to you");
+			return;
+		}
+		var qset=checkQsetJson(req.body,function(err){res.status(400).send(err);});
+		if(qset==null)return;
+		var ids=[],id;
+		for(i=0;i<qset.questions.length;i++){
+			id=uniqidstr(function(s){return questiondb[s]==null;});
+			questiondb[id]={"q": qset.questions[i].q, "a": qset.questions[i].a};
+			ids.push(id);
+		}
+		questionsets[setid]={"id": setid, "name": qset.name, "description": qset.description, "questions": ids};
+		persistDB();
+		res.send(setid);
+	});
 	app.post("/zelfoverhoor/docent/deleteset",function(req,res){
 		var setid=req.body;
 		if(!setid||typeof setid!="string"){
@@ -172,6 +215,7 @@ module.exports=function(app,io,_moddir){
 			res.status(404).send("ID not found");
 			return;
 		}
+		delete questionsets[setid];
 		persistDB();
 		res.send();
 	});
-- 
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