diff --git a/hn-vue/src/Layout.vue b/hn-vue/src/Layout.vue
index b5792e2..2c531d2 100644
--- a/hn-vue/src/Layout.vue
+++ b/hn-vue/src/Layout.vue
@@ -3,9 +3,20 @@
     <nav>
       <router-link :to="{ name: 'links' }">Derniers liens publiés</router-link>
       /
-      <router-link :to="{ name: 'register' }">Créer un compte</router-link>
-      /
-      <router-link :to="{ name: 'login' }">Se connecter</router-link>
+      <authenticated>
+        <template v-slot="{ username }">
+          <p>Vous êtes connecté en tant que {{ username }}</p>
+          -
+          <button @click.prevent="$store.commit('auth/logout')">
+            Se déconnecter
+          </button>
+        </template>
+        <template v-slot:anonymous>
+          <router-link :to="{ name: 'register' }">Créer un compte</router-link>
+          /
+          <router-link :to="{ name: 'login' }">Se connecter</router-link>
+        </template>
+      </authenticated>
     </nav>
     <router-view></router-view>
     <notifications-panel />
@@ -14,8 +25,9 @@
 
 <script>
 import NotificationsPanel from "./components/NotificationsPanel";
+import Authenticated from "./components/Authenticated";
 
 export default {
-  components: { NotificationsPanel },
+  components: { NotificationsPanel, Authenticated },
 };
 </script>
diff --git a/hn-vue/src/api.js b/hn-vue/src/api.js
index 00214ca..079c839 100644
--- a/hn-vue/src/api.js
+++ b/hn-vue/src/api.js
@@ -16,6 +16,14 @@ class Api {
     return this._get(`/api/links/${id}`);
   }
 
+  upvoteLink(id) {
+    return this._put(`/api/links/${id}/upvote`);
+  }
+
+  downvoteLink(id) {
+    return this._put(`/api/links/${id}/downvote`);
+  }
+
   getLinkComments(id) {
     return this._get(`/api/links/${id}/comments`);
   }
@@ -80,6 +88,30 @@ class Api {
       return r.json();
     });
   }
+
+  _put(path, data) {
+    return fetch(this._baseUrl + path, {
+      method: "PUT",
+      headers: {
+        Accept: "application/json",
+        "Content-Type": "application/json",
+        ...this._authorizationHeader(),
+      },
+      body: JSON.stringify(data),
+    }).then((r) => {
+      if (!r.ok) {
+        return Promise.reject(new Error("Erreur dans la requête"));
+      }
+
+      if (r.status === 204) {
+        return r;
+      }
+
+      // if (!r.headers['Content-Length'] === '0') {
+
+      return r.json();
+    });
+  }
 }
 
 export default new Api(process.env.VUE_APP_API_URL);
diff --git a/hn-vue/src/components/Authenticated.vue b/hn-vue/src/components/Authenticated.vue
new file mode 100644
index 0000000..e4ce145
--- /dev/null
+++ b/hn-vue/src/components/Authenticated.vue
@@ -0,0 +1,9 @@
+<template>
+  <div>
+    <slot
+      :username="$store.state.auth.username"
+      v-if="$store.state.auth.token"
+    ></slot>
+    <slot v-else name="anonymous"></slot>
+  </div>
+</template>
diff --git a/hn-vue/src/components/LinkItem.vue b/hn-vue/src/components/LinkItem.vue
index 38aaac4..8319334 100644
--- a/hn-vue/src/components/LinkItem.vue
+++ b/hn-vue/src/components/LinkItem.vue
@@ -6,18 +6,48 @@
       }}</router-link>
     </h2>
     <p>Publié le {{ link.createdAt }} par {{ link.createdBy.username }}</p>
-    <p>👍 {{ link.upvotesCount }} / 👎 {{ link.downvotesCount }}</p>
+    <authenticated>
+      <button @click.prevent="upvote">👍 {{ link.upvotesCount }}</button>
+      / <button @click.prevent="downvote">👎 {{ link.downvotesCount }}</button>
+      <template v-slot:anonymous>
+        <p>👍 {{ link.upvotesCount }} / 👎 {{ link.downvotesCount }}</p>
+      </template>
+    </authenticated>
   </article>
 </template>
 
 <script>
+import Authenticated from "./Authenticated";
+import api from "../api";
+
 export default {
   name: "LinkItem",
+  components: { Authenticated },
   props: {
     link: {
       type: Object,
       required: true,
     },
   },
+  methods: {
+    async upvote() {
+      await api.upvoteLink(this.link.id);
+
+      // const link = await api.getLinkById(this.link.id);
+
+      // this.link.downvotesCount = link.downvotesCount;
+      // this.link.upvotesCount = link.upvotesCount;
+      this.$emit("refresh", this.link.id);
+    },
+    async downvote() {
+      await api.downvoteLink(this.link.id);
+
+      // const link = await api.getLinkById(this.link.id);
+
+      // this.link.upvotesCount = link.upvotesCount;
+      // this.link.downvotesCount = link.downvotesCount;
+      this.$emit("refresh", this.link.id);
+    },
+  },
 };
 </script>
diff --git a/hn-vue/src/pages/LinkDetail.vue b/hn-vue/src/pages/LinkDetail.vue
index fb2aff2..ebaaa37 100644
--- a/hn-vue/src/pages/LinkDetail.vue
+++ b/hn-vue/src/pages/LinkDetail.vue
@@ -7,7 +7,7 @@
       message="Chargement du lien en cours ..."
     />
     <div v-else>
-      <link-item :link="link" />
+      <link-item :link="link" @refresh="refreshLink" />
       <loading v-if="comments === null" message="Chargement des commentaires" />
       <p v-else-if="comments.length === 0">Aucun commentaire pour ce lien</p>
       <ul v-else>
@@ -52,6 +52,9 @@ export default {
     // '$route': 'fetchLinkDetail'
   },
   methods: {
+    async refreshLink() {
+      this.link = await api.getLinkById(this.id);
+    },
     async fetchLinkDetail() {
       this.link = null;
       this.comments = null;
diff --git a/hn-vue/src/pages/Links.vue b/hn-vue/src/pages/Links.vue
index eea77d1..c0b2d4f 100644
--- a/hn-vue/src/pages/Links.vue
+++ b/hn-vue/src/pages/Links.vue
@@ -8,7 +8,7 @@
     />
     <ul v-else>
       <li v-for="link in links" :key="link.id">
-        <link-item :link="link" />
+        <link-item :link="link" @refresh="refreshLink" />
       </li>
     </ul>
   </div>
@@ -41,6 +41,14 @@ export default {
     //   this.loading = false;
     // }
   },
+  methods: {
+    async refreshLink(id) {
+      const link = await api.getLinkById(id);
+      const index = this.links.findIndex((l) => l.id === id);
+
+      this.links.splice(index, 1, link);
+    },
+  },
 };
 </script>
 
diff --git a/hn-vue/src/store.js b/hn-vue/src/store.js
index f1f9368..9d91a5c 100644
--- a/hn-vue/src/store.js
+++ b/hn-vue/src/store.js
@@ -40,6 +40,10 @@ export default function createStore() {
             state.token = token;
             state.username = username;
           },
+          logout(state) {
+            state.token = null;
+            state.username = null;
+          },
         },
         actions: {
           async login({ commit }, data) {