From b01c91423fce919486f6de9995bec04a672fcd08 Mon Sep 17 00:00:00 2001
From: Son NK <>
Date: Sat, 23 May 2020 19:03:17 +0200
Subject: [PATCH] display notifications. user can mark a notification as read.

---
 app/dashboard/templates/dashboard/index.html |  1 -
 templates/footer.html                        | 70 ++++++++++++++++++++
 templates/header.html                        | 32 +++++++++
 3 files changed, 102 insertions(+), 1 deletion(-)

diff --git a/app/dashboard/templates/dashboard/index.html b/app/dashboard/templates/dashboard/index.html
index e6b0d32a..9dfc99f2 100644
--- a/app/dashboard/templates/dashboard/index.html
+++ b/app/dashboard/templates/dashboard/index.html
@@ -710,7 +710,6 @@
     })
   </script>
 
-  <script src="{{ url_for('static', filename='node_modules/vue/dist/vue.min.js') }}"></script>
   <script>
     var app = new Vue({
       el: '#filter-app',
diff --git a/templates/footer.html b/templates/footer.html
index 3bad00d5..fdc987ce 100644
--- a/templates/footer.html
+++ b/templates/footer.html
@@ -46,3 +46,73 @@
     introJs().start();
   }
 </script>
+
+<script src="{{ url_for('static', filename='node_modules/vue/dist/vue.min.js') }}"></script>
+
+<script>
+  var app = new Vue({
+    el: '#notification-app',
+    delimiters: ["[[", "]]"], // necessary to avoid conflict with jinja
+    data: {
+      notifications: [],
+      page: 0,
+      loading: true,
+      canLoadMore: true
+    },
+    computed: {
+      has_non_read_notification: function () {
+        for (let i = 0; i < this.notifications.length; i++) {
+          if (!this.notifications[i].read) return true;
+        }
+        return false;
+      }
+    },
+    methods: {
+      markAsRead: async function (notification) {
+        notification.read = true;
+        let res = await fetch(`/api/notifications/${notification.id}/read`, {
+          method: "POST",
+          headers: {
+            "Content-Type": "application/json",
+          }
+        });
+
+        if (!res.ok) {
+          toastr.error("Sorry for the inconvenience! Could you refresh the page & retry please?", "Unknown Error");
+        }
+      },
+
+      loadMore: async function () {
+        let that = this;
+        that.page += 1;
+
+        let res = await fetch(`/api/notifications?page=${that.page}`, {
+          method: "GET",
+          headers: {
+            "Content-Type": "application/json",
+          }
+        });
+        if (res.ok) {
+          let json = await res.json();
+          if (json.length == 0) that.canLoadMore = false;
+          that.notifications = that.notifications.concat(json);
+        }
+      }
+
+    },
+    async mounted() {
+      let that = this;
+      let res = await fetch(`/api/notifications?page=${that.page}`, {
+        method: "GET",
+        headers: {
+          "Content-Type": "application/json",
+        }
+      });
+      if (res.ok) {
+        let json = await res.json();
+        that.notifications = json;
+        that.loading = false;
+      }
+    }
+  })
+</script>
\ No newline at end of file
diff --git a/templates/header.html b/templates/header.html
index d26d2356..84e18f32 100644
--- a/templates/header.html
+++ b/templates/header.html
@@ -15,6 +15,38 @@
           </div>
         {% endif %}
 
+        <div id="notification-app" class="dropdown d-none d-md-flex">
+          <a class="nav-link icon" data-toggle="collapse" href="#notifications" style="height: 100%">
+            <i class="fe fe-bell"></i>
+            <span v-if="has_non_read_notification" class="nav-unread"></span>
+            <span v-else class="nav-read"></span>
+          </a>
+
+          <div class="dropdown-menu dropdown-menu-right dropdown-menu-arrow collapse" id="notifications">
+            <div v-if="loading">Loading ...</div>
+            <div class="dropdown-item d-flex" v-for="notification in notifications">
+              <div class="flex-grow-1">
+                <div v-html="notification.message"
+                     style="width: 40em; word-wrap:break-word; white-space: normal"></div>
+                <div class="small text-muted">
+                  [[notification.created_at]]
+                </div>
+              </div>
+              <div v-if="!notification.read">
+                <i class="fe fe-check"
+                   @click="markAsRead(notification)"
+                   data-toggle="tooltip" title="mark as read"></i>
+              </div>
+            </div>
+
+            <div class="text-center">
+              <button v-if="canLoadMore" @click="loadMore()" class="btn btn-link">Load more</button>
+            </div>
+
+          </div>
+
+        </div>
+
         <div class="dropdown">
           <a href="#" class="nav-link pr-0 leading-none" data-toggle="dropdown">
             {% if current_user.profile_picture_id %}