Add user-specific quiz statistics

components/Challenge.vue

@@ -1,13 +1,27 @@
 <template>
-  <v-container fluid>
+  <v-card>
-    <v-subheader class="text-h5 text--primary">Challenge</v-subheader>
+    <v-card-title>
-    <v-divider></v-divider>
+      Spiele {{ games.won + games.lost + games.tie }}
+    </v-card-title>
+    <v-card-subtitle>
+      <div>Siege: {{ games.won }}</div>
+      <div>Unentschieden: {{ games.lost }}</div>
+      <div>Niederlagen: {{ games.tie }}</div>
+      <div>Fragen: {{ games.questionsCorrect + games.questionsIncorrect }}</div>
+      <div>Richtig: {{ questionsCorrectPercent }}%</div>
+    </v-card-subtitle>
+    <v-card-text>
+      {{ text }}
+    </v-card-text>
+    <v-card-text>
       <v-btn depressed color="success" class="my-3" @click="playVersus">
         <v-icon left>mdi-play</v-icon>
-      Quiz Spielen
+        Spielen
       </v-btn>
+    </v-card-text>
+    <v-divider></v-divider>
     <AddClosedEndedQuestion />
-  </v-container>
+  </v-card>
 </template>
 
 <script>
@@ -23,7 +37,22 @@ export default {
     return {
     }
   },
-  created () {
+  computed: {
+    games () {
+      return this.$store.state.user.games[this.courseId]
+    },
+    questionsCorrectPercent () {
+      const percent = (this.games.questionsCorrect / (this.games.questionsCorrect + this.games.questionsIncorrect)) * 100
+      // percent will be NaN if the student hasn't played any games yet
+      return percent ? Math.round(parseFloat(percent)) : 100 // Convert to float, then round to closest int
+    },
+    text () {
+      if (this.questionsAnswered >= 20 && this.questionsCorrectPercent >= 90) {
+        return 'Du scheinst gut auf die Klausur vorbereitet zu sein. Viel Glück!'
+      } else {
+        return 'Wir empfehlen Dir noch ein wenig zu üben, bevor du zur Klausur antrittst.'
+      }
+    }
   },
   methods: {
     playVersus () {

components/GameResultDialog.vue

@@ -0,0 +1,58 @@
+<template>
+  <v-dialog v-model="show" persistent width="500">
+    <v-card class="mx-auto">
+      <v-card-title class="justify-center">{{ title }}</v-card-title>
+      <v-card-text>
+        <v-row no-gutters class="text-h4 text--primary">
+          <v-col cols="5" class="d-flex justify-end">{{ result.correctAnswersPl1 }}</v-col>
+          <v-col cols="2" class="d-flex justify-center">:</v-col>
+          <v-col cols="5" class="d-flex justify-start">{{ result.correctAnswersPl2 }}</v-col>
+        </v-row>
+        <v-row no-gutters class="text-subtitle-1">
+          <v-col cols="5" class="d-flex justify-end">{{ game.player1name }}</v-col>
+          <v-col cols="2" class="d-flex justify-center"></v-col>
+          <v-col cols="5" class="d-flex justify-start">{{ game.player2name }}</v-col>
+        </v-row>
+      </v-card-text>
+      <v-card-actions>
+        <v-spacer></v-spacer>
+        <v-btn depressed block color="primary" :to="`/courses/${courseId}`">Abschließen</v-btn>
+        <v-spacer></v-spacer>
+      </v-card-actions>
+    </v-card>
+  </v-dialog>
+</template>
+
+<script>
+import { Game } from '~/plugins/game'
+
+export default {
+  props: {
+    game: {
+      type: Game,
+      required: true
+    },
+    courseId: {
+      type: String,
+      required: true
+    }
+  },
+  data () {
+    return {
+      show: false
+    }
+  },
+  computed: {
+    result () {
+      return this.game.getResult()
+    },
+    title () {
+      if (this.result.tie) return 'Unentschieden!'
+      else return this.result.winner === this.playerNumber ? 'Gewonnen!' : 'Verloren :('
+    },
+    playerNumber () {
+      return this.game.player1id === this.$auth.currentUser.uid ? 1 : 2
+    }
+  }
+}
+</script>

plugins/game.js

@@ -1,7 +1,7 @@
 export class Game {
   constructor (id, questions, created, player1id, player1name, player1answers, player2id, player2name, player2answers) {
     this.id = id
-    this.questions = questions
+    this.questionIds = questions
     this.created = created
     this.player1id = player1id
     this.player1name = player1name
@@ -10,13 +10,38 @@ export class Game {
     this.player2name = player2name
     this.player2answers = player2answers
   }
+
+  getResult () {
+    if (!this.questions) return {}
+    const qs = this.questions
+
+    function countCorrectAnswers(answersGiven) {
+      let i = 0
+      answersGiven.forEach(a => {
+        const q = qs.find(e => e.id === a.frage)
+        if (q && a.antwort === q.correctAnswer) i++
+      })
+      return i
+    }
+
+    const correctAnswersPl1 = countCorrectAnswers(this.player1answers)
+    const correctAnswersPl2 = countCorrectAnswers(this.player2answers)
+
+    return {
+      winner: correctAnswersPl1 > correctAnswersPl2 ? 1 : 2,
+      loser: correctAnswersPl1 > correctAnswersPl2 ? 2 : 1,
+      tie: correctAnswersPl1 === correctAnswersPl2,
+      correctAnswersPl1,
+      correctAnswersPl2
+    }
+  }
 }
 
 // Firestore data converter
 export const GameConverter = {
   toFirestore: (game) => {
     return {
-      fragen: game.questions,
+      fragen: game.questionIds,
       erstellt: game.created,
       spieler1id: game.player1id,
       spieler1name: game.player1name,

plugins/user.js

@@ -1,20 +1,48 @@
 export class User {
-  constructor (displayName, courses, gamesStarted) {
+  constructor (displayName, courses, games, gamesStarted) {
     this.displayName = displayName
     this.courses = courses
+    this.games = {}
     this.gamesStarted = []
 
+    if (games) this.setGames(games)
+
     if (gamesStarted && gamesStarted.length > 0) {
       gamesStarted.forEach(e => {
         this.gamesStarted.push({ course: e.kurs, game: e.spiel })
       })
     }
   }
+
+  setGames (gamesObj) {
+    for (const [key, value] of Object.entries(gamesObj)) {
+      const obj = {
+        won: value.gewonnen || 0,
+        lost: value.verloren || 0,
+        tie: value.unentschieden || 0,
+        questionsCorrect: value.fragenRichtig || 0,
+        questionsIncorrect: value.fragenFalsch || 0
+      }
+      this.games[key] = obj
+    }
+  }
 }
 
 // Firestore data converter
 export const UserConverter = {
   toFirestore: (user) => {
+    const spiele = {}
+    for (const [key, value] of Object.entries(user.games)) {
+      const obj = {
+        gewonnen: value.won || 0,
+        verloren: value.lost || 0,
+        unentschieden: value.tie || 0,
+        fragenRichtig: value.questionsCorrect || 0,
+        fragenFalsch: value.questionsIncorrect || 0
+      }
+      spiele[key] = obj
+    }
+
     const spieleBegonnen = []
     user.gamesStarted.forEach(e => {
       spieleBegonnen.push({ kurs: e.course, spiel: e.game })
@@ -23,11 +51,12 @@ export const UserConverter = {
     return {
       anzeigename: user.displayName,
       kurse: user.courses,
+      spiele,
       spieleBegonnen
     }
   },
   fromFirestore: (snapshot, options) => {
     const data = snapshot.data(options)
-    return new User(data.anzeigename, data.kurse, data.spieleBegonnen)
+    return new User(data.anzeigename, data.kurse, data.spiele, data.spieleBegonnen)
   }
 }

store/index.js

@@ -37,6 +37,9 @@ export const mutations = {
   setCourses (state, courses) {
     state.courses = courses
   },
+  initCourse (state, courseID) {
+    state.user.setGames({ [courseID]: {} })
+  },
   addFavoriteCourse (state, courseID) {
     state.user.courses.push(courseID)
   },