From 0e2309a25bab0569cc8120fb55c6ab76ef81c1ed Mon Sep 17 00:00:00 2001
From: Rakantor <rakantor.dev@gmail.com>
Date: Wed, 2 Nov 2022 21:30:06 +0100
Subject: [PATCH] Add option for admins to create new courses

---
 components/AddCourse.vue | 123 +++++++++++++++++++++++++++++++++++++++
 pages/dashboard.vue      |   9 ++-
 store/index.js           |  10 ++++
 3 files changed, 137 insertions(+), 5 deletions(-)
 create mode 100644 components/AddCourse.vue

diff --git a/components/AddCourse.vue b/components/AddCourse.vue
new file mode 100644
index 0000000..4abc840
--- /dev/null
+++ b/components/AddCourse.vue
@@ -0,0 +1,123 @@
+<template>
+  <v-dialog v-model="show" max-width="500" persistent>
+    <template #activator="{ on, attrs }">
+      <v-card flat width="100%" class="rounded-lg" v-bind="attrs" v-on="on">
+        <v-card-text class="text-h6">
+          <v-icon left x-large>mdi-plus</v-icon>
+          Kurs hinzufügen
+        </v-card-text>
+      </v-card>
+    </template>
+    <ValidationObserver ref="addCourseObserver" v-slot="{ invalid }">
+      <form @submit.prevent="addCourse">
+        <v-card>
+          <v-card-title>Neuer Kurs</v-card-title>
+          <v-card-text>
+            <ValidationProvider v-slot="{ errors }" name="courseID" rules="required">
+              <v-text-field
+                v-model="id"
+                required
+                label="ID"
+                persistent-placeholder
+                placeholder="ISEF01"
+                :error-messages="errors"
+              ></v-text-field>
+            </ValidationProvider>
+            <ValidationProvider v-slot="{ errors }" name="course" rules="required">
+              <v-text-field
+                v-model="title"
+                required
+                label="Bezeichnung"
+                persistent-placeholder
+                placeholder="Projekt Software Engineering"
+                :error-messages="errors"
+              ></v-text-field>
+            </ValidationProvider>
+            <ValidationProvider v-slot="{ errors }" name="tutor" rules="required|email">
+              <v-text-field
+                v-model="tutor"
+                required
+                label="Tutor E-Mail"
+                persistent-placeholder
+                placeholder="john.johnson@iu.org"
+                :error-messages="errors"
+              ></v-text-field>
+            </ValidationProvider>
+          </v-card-text>
+          <v-divider></v-divider>
+          <v-card-actions>
+            <v-spacer></v-spacer>
+            <v-btn text color="primary" @click="close">Abbrechen</v-btn>
+            <v-btn type="submit" depressed color="primary" :loading="loading" :disabled="invalid">Hinzufügen</v-btn>
+          </v-card-actions>
+        </v-card>
+      </form>
+    </ValidationObserver>
+  </v-dialog>
+</template>
+
+<script>
+import { doc, setDoc } from 'firebase/firestore'
+// We use vee-validate@3 for form validation.
+// https://vee-validate.logaretm.com/v3/guide/basics.html
+import { ValidationProvider, ValidationObserver, extend } from 'vee-validate'
+import { required, email } from 'vee-validate/dist/rules'
+
+// Override the default error message of required fields
+extend('required', {
+  ...required,
+  message: 'Pflichtfeld'
+})
+
+extend('email', {
+  ...email,
+  message: 'Keine gültige E-Mail-Adresse'
+})
+
+export default {
+  name: 'AddCourseDialog',
+  components: {
+    ValidationProvider,
+    ValidationObserver
+  },
+  data () {
+    return {
+      show: false,
+      loading: false,
+      id: '',
+      title: '',
+      tutor: ''
+    }
+  },
+  methods: {
+    addCourse () {
+      this.loading = true
+      const courseID = this.id.toLowerCase().trim()
+      const courseName = this.title.trim()
+      const tutorEmail = this.tutor.toLowerCase().trim()
+      const c = { name: courseName, tutor: tutorEmail }
+
+      // Add a new document
+      setDoc(doc(this.$db, `kurse/${courseID}`), c)
+      .then((docRef) => {
+        // Successfully added a new course to the database.
+        this.$store.commit('setCourse', { courseID, courseData: c })
+        this.$toast({content: `Der Kurs "${courseID.toUpperCase()} - ${courseName}" wurde hinzugefügt!`, color: 'success'})
+        this.close()
+      })
+      .catch((error) => {
+        // Failed to add a new course to the database; display error message
+        this.$toast({content: error, color: 'error'})
+      })
+      .then(() => { this.loading = false })
+    },
+    close () {
+      this.id = ''
+      this.title = ''
+      this.tutor = ''
+      this.show = false
+      this.$refs.addCourseObserver.reset()
+    }
+  }
+}
+</script>
\ No newline at end of file
diff --git a/pages/dashboard.vue b/pages/dashboard.vue
index 76b517e..8bd4717 100644
--- a/pages/dashboard.vue
+++ b/pages/dashboard.vue
@@ -1,6 +1,9 @@
 <template>
   <v-container fluid>
     <v-row>
+      <v-col v-if="$store.getters.isAdmin" cols="12">
+        <AddCourse />
+      </v-col>
       <v-col v-for="(course, id) in courses" :key="id" cols="12" lg="6">
         <v-card flat width="100%" class="rounded-lg" @click="openCourse(id)">
           <v-row no-gutters class="flex-nowrap">
@@ -26,16 +29,12 @@
 <script>
 import _cloneDeep from 'lodash-es/cloneDeep'
 import { collection, getDocs } from 'firebase/firestore'
-import { demoAccounts } from '~/components/DemoInfoDialog.vue'
 
 export default {
   name: 'DashboardPage',
   layout ({ $auth }) {
     // Ref: https://firebase.google.com/docs/reference/js/v8/firebase.auth.Auth#currentuser
-    // return $auth.currentUser.emailVerified ? 'default' : 'unverified'
-
-    // TODO: For demo purposes only. Delete in production.
-    return $auth.currentUser.emailVerified || demoAccounts.includes($auth.currentUser.email) ? 'default' : 'unverified'
+    return $auth.currentUser.emailVerified ? 'default' : 'unverified'
   },
   data () {
     return {
diff --git a/store/index.js b/store/index.js
index db401a8..eaf3522 100644
--- a/store/index.js
+++ b/store/index.js
@@ -1,11 +1,15 @@
 export const state = () => ({
   firebaseInitialized: false,
+  idTokenResult: null,
   user: null,
   courses: {},
   selectedCourse: undefined
 })
 
 export const getters = {
+  isAdmin (state) {
+    return state.idTokenResult && state.idTokenResult.claims.admin
+  },
   getCourseByID: (state) => (courseID) => {
     return state.courses[courseID]
   }
@@ -15,12 +19,18 @@ export const mutations = {
   initFirebase (state) {
     state.firebaseInitialized = true
   },
+  setIdTokenResult (state, idTokenResult) {
+    state.idTokenResult = idTokenResult
+  },
   setUser (state, user) {
     state.user = user
   },
   setCourses (state, courses) {
     state.courses = courses
   },
+  setCourse (state, { courseID, courseData }) {
+    this._vm.$set(state.courses, courseID, courseData)
+  },
   setSelectedCourse (state, courseID) {
     state.selectedCourse = courseID
   },