'update'

[qomet.git] / models / course.js

diff --git a/models/course.js b/models/course.js
index 53419c1..748ab6c 100644 (file)
--- a/models/course.js
+++ b/models/course.js
@@ -1,17 +1,115 @@
-const CourseEntity = require("../entities/course");
-const UserEntity = require("../entities/user");
-const AssessmentEntity = require("../entities/assessment");
+const UserModel = require("../models/user");
+const db = require("../utils/database");
 
 const CourseModel =
 {
+       /*
+        * Structure:
+        *   _id: BSON id
+        *   uid: prof ID
+        *   code: varchar
+        *   description: varchar
+        *   password: monitoring password hash
+        *   students: array of
+        *     number: student number
+        *     name: varchar
+        *     group: integer
+        */
+
+       //////////////////
+       // BASIC FUNCTIONS
+
+       getByUser: function(uid, callback)
+       {
+               db.courses.find(
+                       { uid: uid },
+                       callback
+               );
+       },
+
+       getById: function(cid, callback)
+       {
+               db.courses.findOne(
+                       { _id: cid },
+                       callback
+               );
+       },
+
+       getByPath: function(uid, code, callback)
+       {
+               db.courses.findOne(
+                       {
+                               $and: [
+                                       { uid: uid },
+                                       { code: code },
+                               ]
+                       },
+                       callback
+               );
+       },
+
+       insert: function(uid, code, description, cb)
+       {
+               db.courses.insert(
+                       {
+                               uid: uid,
+                               code: code,
+                               description: description,
+                               students: [ ],
+                       },
+                       cb);
+       },
+
+       setStudents: function(cid, students, cb)
+       {
+               db.courses.update(
+                       { _id: cid },
+                       { $set: { students: students } },
+                       cb
+               );
+       },
+
+       // Note: return { students: { ... } }, pointing on the requested row
+       getStudent: function(cid, number, cb)
+       {
+               db.courses.findOne(
+                       { _id: cid },
+                       {
+                               _id: 0,
+                               students: { $elemMatch: {number: number} }
+                       },
+                       cb
+               );
+       },
+
+       setPassword: function(cid, pwd, cb)
+       {
+               db.courses.update(
+                       { _id: cid },
+                       { $set: { password: pwd } },
+                       cb
+               );
+       },
+
+       remove: function(cid, cb)
+       {
+               db.courses.remove(
+                       { _id: cid },
+                       cb
+               );
+       },
+
+       /////////////////////
+       // ADVANCED FUNCTIONS
+
        getByInitials: function(initials, callback)
        {
-               UserEntity.getByInitials(initials, (err,user) => {
+               UserModel.getByInitials(initials, (err,user) => {
                        if (!!err || !user)
                                callback(err, []);
                        else
                        {
-                               CourseEntity.getByUser(user._id, (err2,courseArray) => {
+                               CourseModel.getByUser(user._id, (err2,courseArray) => {
                                        callback(err2, courseArray);
                                });
                        }
@@ -20,12 +118,12 @@ const CourseModel =
 
        getByRefs: function(initials, code, callback)
        {
-               UserEntity.getByInitials(initials, (err,user) => {
+               UserModel.getByInitials(initials, (err,user) => {
                        if (!!err || !user)
                                callback(err, []);
                        else
                        {
-                               CourseEntity.getByPath(user._id, code, (err2,course) => {
+                               CourseModel.getByPath(user._id, code, (err2,course) => {
                                        callback(err2, course);
                                });
                        }
@@ -35,38 +133,41 @@ const CourseModel =
        importStudents: function(uid, cid, students, cb)
        {
                // 1) check if uid == course uid
-               CourseEntity.getById(cid, (err,course) => {
+               CourseModel.getById(cid, (err,course) => {
                        if (!!err || !course || !course.uid.equals(uid))
                                return cb({errmsg:"Not your course"},{});
                        // 2) Set students
-                       CourseEntity.setStudents(cid, students, cb);
+                       CourseModel.setStudents(cid, students, cb);
                });
        },
 
        setPassword: function(uid, cid, pwd, cb)
        {
                // 1) check if uid == course uid
-               CourseEntity.getById(cid, (err,course) => {
+               CourseModel.getById(cid, (err,course) => {
                        if (!!err || !course || !course.uid.equals(uid))
                                return cb({errmsg:"Not your course"},{});
                        // 2) Insert new student (overwrite if number already exists)
-                       CourseEntity.setPassword(cid, pwd, cb);
+                       CourseModel.setPassword(cid, pwd, cb);
                });
        },
 
        remove: function(uid, cid, cb)
        {
                // 1) check if uid == course uid
-               CourseEntity.getById(cid, (err,course) => {
+               CourseModel.getById(cid, (err,course) => {
                        if (!!err || !course || !course.uid.equals(uid))
                                return cb({errmsg:"Not your course"},{});
-                       // 2) remove all associated assessments
-                       AssessmentEntity.removeGroup(cid, (err2,ret) => {
-                               if (!!err)
-                                       return cb(err,{});
-                               // 3) remove course (with its students)
-                               CourseEntity.remove(cid, cb);
-                       });
+                       // 2) remove all associated evaluations
+                       db.evaluations.remove(
+                               { cid: cid },
+                               (err2,ret) => {
+                                       if (!!err)
+                                               return cb(err,{});
+                                       // 3) remove course (with its students)
+                                       CourseModel.remove(cid, cb);
+                               }
+                       );
                });
        },
 }