Added pie chart showing counts of categories with a rating of 3 or below

backend/src/main/kotlin/uk/co/neviyn/observationdatabase/Api.kt

@@ -49,3 +49,17 @@ data class ChartDataset(
 ) {
     constructor(label: String, color: String, data: List<Double>) : this(label, color, color, data)
 }
+
+data class AfiPieChart(
+    val labels: List<String> = listOf("Monitoring", "Knowledge", "Control", "Conservatism", "Teamwork"),
+    val datasets: List<AfiPieChartDataset>
+) {
+    constructor(afiPieChartDataset: AfiPieChartDataset) : this(datasets = listOf(afiPieChartDataset))
+}
+
+data class AfiPieChartDataset(
+    val data: List<Int>,
+    val backgroundColor: List<String> = listOf("#F90", "#000", "#00FF00", "#33F", "#FF0")
+) {
+    constructor(monitoring: Int, knowledge: Int, control: Int, conservatism: Int, teamwork: Int) : this(data = listOf(monitoring, knowledge, control, conservatism, teamwork))
+}

backend/src/main/kotlin/uk/co/neviyn/observationdatabase/Controller.kt

@@ -190,6 +190,39 @@ class Controller {
         }
         return builder.toString()
     }
+
+    val afiPieThreshold = 3
+
+    @PostMapping("/observations/afipie")
+    fun getObservationsAfiPieChartData(@Valid @RequestBody observationsRequest: ObservationsRequest): AfiPieChart? {
+        val data = getObservations(observationsRequest)
+        var monitoring = 0
+        var knowledge = 0
+        var control = 0
+        var conservatism = 0
+        var teamwork = 0
+        for (x in data) {
+            for (y in x.scenarios) {
+                if (y.monitoring.rating <= afiPieThreshold)
+                    monitoring++
+                if (y.knowledge.rating <= afiPieThreshold)
+                    knowledge++
+                if (y.control.rating <= afiPieThreshold)
+                    control++
+                if (y.controlProcedural.rating <= afiPieThreshold)
+                    control++
+                if (y.conservatism.rating <= afiPieThreshold)
+                    conservatism++
+                if (y.teamworkCommunications.rating <= afiPieThreshold)
+                    teamwork++
+                if (y.teamworkLeadership.rating <= afiPieThreshold)
+                    teamwork++
+                if (y.teamworkWorkload.rating <= afiPieThreshold)
+                    teamwork++
+            }
+        }
+        return AfiPieChart(AfiPieChartDataset(monitoring, knowledge, control, conservatism, teamwork))
+    }
 }
 
 data class AverageData(

frontend/src/components/AfiPie.vue

@@ -0,0 +1,12 @@
+<script>
+import { Pie, mixins } from "vue-chartjs";
+
+export default {
+  extends: Pie,
+  mixins: [mixins.reactiveProp],
+  props: ["chartData", "options"],
+  mounted() {
+    this.renderChart(this.chartData, this.options);
+  }
+};
+</script>

frontend/src/views/Stats.vue

@@ -13,6 +13,10 @@
                 </button>
             </div>
         </b-modal>
+        <b-row>
+          <b-col><b-button @click="chartMode = 0; getFilteredAverage()">Trends</b-button></b-col>
+          <b-col><b-button @click="chartMode = 1; getFilteredAverage()">AFIs</b-button></b-col>
+        </b-row>
         <b-row>
             <b-col>
                 <b-form-group label="Site">
@@ -49,12 +53,20 @@
                 <b-button v-on:click="getFilteredAverage()">Refresh</b-button>
             </b-col>
         </b-row>
-        <b-row>
+        <b-row v-if="chartData != null && chartData.labels.length > 0 && !loading">
-            <b-col v-if="chartData != null && chartData.labels.length > 0">
+            <b-col v-if="chartMode == 0">
                 <stats-view v-bind:chartData="chartData"
                             style="position: relative; height:80vh" :options="options"/>
             </b-col>
-            <b-col v-else>
+            <b-col v-else-if="chartMode == 1">
+              <afi-pie :chartData="chartData" :options="pieOptions"/>
+            </b-col>
+        </b-row>
+        <b-row v-else-if="loading">
+          Loading...
+        </b-row>
+        <b-row v-else>
+          <b-col>
             <v-icon name="search"></v-icon>
             <p>No data found with the given search parameters.</p>
           </b-col>
@@ -65,6 +77,7 @@
 <script>
 import Vue from "vue";
 import StatsView from "../components/StatsView";
+import AfiPie from "../components/AfiPie"
 import "vue-awesome/icons/exclamation-circle";
 import "vue-awesome/icons/search";
 
@@ -73,9 +86,12 @@ var moment = require("moment");
 export default {
   name: "stats",
   title: "Statistics",
-  components: { StatsView },
+  components: { StatsView, AfiPie },
   data: function() {
     return {
+      chartMode: 0,
+      endpoints: ["/observations/chartdata", "/observations/afipie"],
+      loading: false,
       chartData: null,
       options: {
         responsive: true,
@@ -110,6 +126,9 @@ export default {
           ]
         }
       },
+      pieOptions:{
+        maintainAspectRatio: false
+      },
       errorStatus: null,
       errorMessage: null,
       dateOptions: {
@@ -172,8 +191,9 @@ export default {
   },
   methods: {
     getFilteredAverage: function() {
+      this.loading = true;
       Vue.axios
-        .post("/observations/chartdata", {
+        .post(this.endpoints[this.chartMode], {
           site: this.siteSelection,
           tutor: this.tutorSelection,
           startDate: moment(this.startDate).format("YYYY-MM-DD"),
@@ -183,11 +203,13 @@ export default {
         })
         .then(response => {
           this.chartData = response.data;
+          this.loading = false;
         })
         .catch(error => {
           this.errorStatus = error.response.status;
           this.errorMessage = error.response.data;
           this.$refs.errorModal.show();
+          this.loading = false;
         });
     },
     getTutors: function() {
@@ -216,7 +238,6 @@ export default {
     }
   },
   mounted() {
-    this.getFilteredAverage();
     Vue.axios
       .get("/site")
       .then(response => {