From 088b6f38dc7430d71fd32e195a065059c6339168 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Patrik=20Mint=C4=9Bl?= <ja@patrick115.eu>
Date: Sat, 5 Oct 2024 16:18:43 +0200
Subject: [PATCH] Finished AllTasks component

---
 frontend/src/Teacher/AllTasks.vue | 202 +++++++++++++++++++-----------
 1 file changed, 129 insertions(+), 73 deletions(-)

diff --git a/frontend/src/Teacher/AllTasks.vue b/frontend/src/Teacher/AllTasks.vue
index f18fc402..b09c286d 100644
--- a/frontend/src/Teacher/AllTasks.vue
+++ b/frontend/src/Teacher/AllTasks.vue
@@ -1,9 +1,12 @@
 <script setup lang="ts">
-import '@mdi/font/css/materialdesignicons.css';
-import { computed, ref } from 'vue';
-import 'vuetify/styles';
+import type { Config, ConfigColumns, Api as DataTableObject } from 'datatables.net';
+import DataTablesCore from 'datatables.net-bs5';
+import DataTable from 'datatables.net-vue3';
+import { ref, watchEffect } from 'vue';
 import Loader from '../components/Loader.vue';
-import { getFromAPI } from '../utilities';
+import { getDate, getFromAPI } from '../utilities';
+
+DataTable.use(DataTablesCore);
 
 type Task = {
   id: string;
@@ -16,11 +19,24 @@ type RawTask = Omit<Task, 'date'> & {
   date: string;
 };
 
-const tasksLoaded = ref(false);
-const allTasks = ref(Array<Task>());
-const taskCount = ref(0);
-
-const getTasks = async (subject: string, count: number, start = 0) => {
+type SortValue = 'asc' | 'desc';
+
+/**
+ * Get tasks from API
+ * @param subject Subject abbreviation
+ * @param count Count of records
+ * @param start Offset of records
+ * @param sort Type of sorting
+ * @param search Search query
+ * @returns Tuple of [total count, tasks]
+ */
+const getTasks = async (
+  subject: string,
+  count: number,
+  start = 0,
+  sort: SortValue = 'desc',
+  search: string = ''
+): Promise<[number, Task[]]> => {
   const params = new URLSearchParams();
 
   if (subject !== 'all') {
@@ -29,6 +45,8 @@ const getTasks = async (subject: string, count: number, start = 0) => {
 
   params.append('count', count.toString());
   params.append('start', start.toString());
+  params.append('sort', sort);
+  params.append('search', search);
 
   const data = await getFromAPI<{
     tasks: RawTask[];
@@ -36,19 +54,20 @@ const getTasks = async (subject: string, count: number, start = 0) => {
   }>(`/api/tasks/all?${params.toString()}`);
 
   if (data) {
-    allTasks.value = data.tasks.map((task) => {
-      return {
-        ...task,
-        date: new Date(task.date)
-      } satisfies Task;
-    });
-
-    taskCount.value = data.count;
-    tasksLoaded.value = true;
+    return [
+      data.count,
+      data.tasks.map((task) => {
+        return {
+          ...task,
+          //parse date, and since django returns the correct format we can just pass it to the Date constructor
+          date: new Date(task.date)
+        } satisfies Task;
+      })
+    ];
   }
-};
 
-getTasks('all', 30);
+  return [0, []];
+};
 
 type Subject = {
   abbr: string;
@@ -56,8 +75,8 @@ type Subject = {
 };
 
 const subjects = ref(Array<Subject>());
-const subjectsLoaded = ref(false);
 
+const loaded = ref(false);
 const getSubjects = async () => {
   const data = await getFromAPI<{
     subjects: Subject[];
@@ -65,85 +84,118 @@ const getSubjects = async () => {
 
   if (data) {
     subjects.value = data.subjects;
-    subjectsLoaded.value = true;
+    loaded.value = true;
   }
 };
 
 getSubjects();
 
-const loaded = computed(() => subjectsLoaded.value && tasksLoaded);
-
-const selectedTasks = computed(() => {
-  let tasks = [...allTasks.value].reverse();
-
-  if (selectedSubject.value !== 'all') {
-    tasks = tasks.filter((task) => task.subject === selectedSubject.value);
-  }
-
-  if (taskSearch.value) {
-    tasks = tasks.filter((task) =>
-      task.title.toLowerCase().includes(taskSearch.value.toLowerCase())
-    );
-  }
-
-  return tasks;
-});
-const selectedSubject = ref('all');
-const taskSearch = ref('');
-
-const headers = [
+const columns = [
   {
     title: 'Id',
-    align: 'start',
-    sortable: false,
-    key: 'id'
+    data: 'id',
+    searchable: false,
+    orderable: false,
+    visible: false
   },
   {
     title: 'Title',
-    align: 'end',
-    sortable: true,
-    key: 'title'
+    data: 'title',
+    orderable: false,
+    searchable: true
   },
   {
     title: 'Subject',
-    align: 'end',
-    sortable: true,
-    key: 'subject'
+    data: 'subject',
+    orderable: false,
+    searchable: false
+  },
+  {
+    title: 'Created At',
+    data: 'date',
+    orderable: true,
+    searchable: false,
+    render: (data: Date) => getDate(data, true)
   },
   {
-    title: 'Date',
-    align: 'end',
-    sortable: true,
-    key: 'date'
+    title: 'Moss check',
+    orderable: false,
+    searchable: false,
+    render: '#moss',
+    data: null,
+    className: 'dt-body-right dt-head-right'
+  }
+] satisfies ConfigColumns[];
+
+let subject = ref('all');
+
+const options = {
+  stripeClasses: ['table-striped', 'table-hover'],
+  serverSide: true,
+  ajax: async (
+    data: {
+      length: number;
+      start: number;
+      order: {
+        column: number;
+        dir: SortValue;
+        name: string;
+      }[];
+      search: {
+        value: string;
+      };
+    },
+    callback: (data: { data: Task[]; recordsTotal: number; recordsFiltered: number }) => void
+  ) => {
+    const [count, items] = await getTasks(
+      subject.value,
+      data.length,
+      data.start,
+      data.order.find((order) => order.column === 3)?.dir ?? 'desc',
+      data.search.value
+    );
+
+    callback({ data: items, recordsTotal: count, recordsFiltered: count }); // https://datatables.net/manual/server-side#Returned-data
   }
-] as const;
+} satisfies Config;
 
-const loadItems = () => {
-  console.log('Loaded');
+//save ref to data table and if it changes save datatable instance to table variable
+const dataTable = ref();
+let table: undefined | DataTableObject<unknown> = undefined;
+
+watchEffect(() => {
+  table = dataTable.value?.dt;
+});
+
+const onChangeSubject = () => {
+  //invalidate cells to load data again with
+  table.draw();
 };
 </script>
 
 <template>
-  <div v-if="!loaded.value" class="d-flex justify-content-center loading-animation">
+  <div v-if="!loaded" class="d-flex justify-content-center loading-animation">
     <Loader />
   </div>
   <template v-else>
     <div class="d-flex gap-1 justify-content-start">
-      <input
-        v-model="taskSearch"
-        type="search"
-        class="form-control"
-        placeholder="Search task by name"
-      />
-      <select v-model="selectedSubject" class="form-select">
+      <select v-model="subject" class="form-select" @change="onChangeSubject">
         <option value="all" selected>All</option>
-        <option v-for="subject in subjects" :key="subject.abbr" :value="subject.abbr">
-          {{ subject.name }}
+        <option v-for="subj in subjects" :key="subj.abbr" :value="subj.abbr">
+          {{ subj.name }}
         </option>
       </select>
     </div>
 
-    <v-data-table-server
+    <DataTable ref="dataTable" class="table table-striped" :columns="columns" :options="options">
+      <template #moss="props">
+        <a class="btn btn-secondary btn-sm" :href="`/teacher/task/${props.cellData.id}/moss`">
+          MOSS check
+        </a>
+      </template>
+    </DataTable>
+
+    <!--<v-data-table-server
       :items-per-page="10"
       :headers="headers"
       :items="selectedTasks"
@@ -151,9 +203,9 @@ const loadItems = () => {
       :loading="false"
       item-value="name"
       @update:options="loadItems"
-    ></v-data-table-server>
+    ></v-data-table-server>-->
 
-    <table class="table table-striped table-hover table-sm">
+    <!--<table class="table table-striped table-hover table-sm">
       <thead>
         <tr>
           <th>Name</th>
@@ -174,6 +226,10 @@ const loadItems = () => {
           </td>
         </tr>
       </tbody>
-    </table>
+    </table>-->
   </template>
 </template>
+
+<style>
+@import 'datatables.net-bs5';
+</style>