From 91ef6f3ce2d370e5e46dd7b55c0a1842f54a75f7 Mon Sep 17 00:00:00 2001
From: Fabio Manganiello <blacklight86@gmail.com>
Date: Mon, 10 Jun 2019 15:11:24 +0200
Subject: [PATCH] Finalized new Snapcast webpanel plugin

---
 .../http/static/css/source/common/modal.scss  |  2 +-
 .../plugins/music.snapcast/index.scss         | 57 ++++++++++++--
 .../js/plugins/music.snapcast/client.js       | 31 +++++++-
 .../static/js/plugins/music.snapcast/group.js | 55 +++++++++++++-
 .../static/js/plugins/music.snapcast/host.js  |  4 +-
 .../static/js/plugins/music.snapcast/index.js | 67 ++++++++++------
 .../plugins/music.snapcast/group.html         |  2 +-
 .../plugins/music.snapcast/index.html         | 62 +--------------
 .../plugins/music.snapcast/modals/client.html | 76 +++++++++++++++++++
 .../plugins/music.snapcast/modals/group.html  | 56 ++++++++++++++
 .../plugins/music.snapcast/modals/host.html   | 54 +++++++++++++
 platypush/backend/music/snapcast.py           | 16 ++--
 12 files changed, 382 insertions(+), 100 deletions(-)
 create mode 100644 platypush/backend/http/templates/plugins/music.snapcast/modals/client.html
 create mode 100644 platypush/backend/http/templates/plugins/music.snapcast/modals/group.html
 create mode 100644 platypush/backend/http/templates/plugins/music.snapcast/modals/host.html

diff --git a/platypush/backend/http/static/css/source/common/modal.scss b/platypush/backend/http/static/css/source/common/modal.scss
index 1f35afe75..c6deaa362 100644
--- a/platypush/backend/http/static/css/source/common/modal.scss
+++ b/platypush/backend/http/static/css/source/common/modal.scss
@@ -1,5 +1,5 @@
 .modal-container {
-    position: absolute;
+    position: fixed;
     display: flex;
     align-items: center;
     justify-content: center;
diff --git a/platypush/backend/http/static/css/source/webpanel/plugins/music.snapcast/index.scss b/platypush/backend/http/static/css/source/webpanel/plugins/music.snapcast/index.scss
index 89500ede9..53137142a 100644
--- a/platypush/backend/http/static/css/source/webpanel/plugins/music.snapcast/index.scss
+++ b/platypush/backend/http/static/css/source/webpanel/plugins/music.snapcast/index.scss
@@ -70,11 +70,58 @@ $host-shadow: $default-shadow;
 
     .modal {
         .info {
-            .row {
-                &:hover { background: $hover-bg; }
-                .value {
-                    text-align: right;
+            padding: 2rem;
+
+            .section {
+                border: $default-border-2;
+                border-radius: 1rem;
+                &:not(last-child) { margin-bottom: 2rem; }
+
+                .title {
+                    border-bottom: $default-border-2;
+                    padding: 1rem;
+                    text-transform: uppercase;
                 }
+
+                &.clients .row {
+                    padding: .5rem;
+
+                    label {
+                        margin: 0 0 0 .5rem;
+                    }
+                }
+            }
+
+            .row {
+                padding: .33rem .5rem;
+                border-radius: .75rem;
+                display: flex;
+                align-items: center;
+
+                &:nth-child(odd) { background: rgba(255, 255, 255, 0.0); }
+                &:nth-child(even) { background: $default-bg-3; }
+                &:hover { background: $hover-bg; }
+
+                .label { font-weight: bold; }
+                .value { text-align: right; }
+            }
+        }
+    }
+}
+
+#music-snapcast-client-info {
+    .info {
+        .buttons {
+            background: initial;
+            margin-top: 1.5rem;
+            padding-top: 1.5rem;
+            border-top: $default-border-2;
+            display: flex;
+            justify-content: center;
+
+            button {
+                color: #900;
+                border-color: #900;
             }
         }
     }
@@ -99,7 +146,7 @@ $host-shadow: $default-shadow;
 @media #{map-get($widths, 'l')} {
     .music-snapcast-container {
         .modal {
-            width: 65vw;
+            width: 45vw;
         }
     }
 }
diff --git a/platypush/backend/http/static/js/plugins/music.snapcast/client.js b/platypush/backend/http/static/js/plugins/music.snapcast/client.js
index 7c79eb291..105e118e7 100644
--- a/platypush/backend/http/static/js/plugins/music.snapcast/client.js
+++ b/platypush/backend/http/static/js/plugins/music.snapcast/client.js
@@ -32,6 +32,35 @@ Vue.component('music-snapcast-client', {
 });
 
 Vue.component('music-snapcast-client-info', {
-    props: ['info'],
+    props: {
+        info: { type: Object }
+    },
+
+    data: function() {
+        return {
+            loading: false,
+        };
+    },
+
+    methods: {
+        deleteClient: async function(event) {
+            if (!confirm('Are you SURE that you want to remove this client?')) {
+                return;
+            }
+
+            this.loading = true;
+            await request('music.snapcast.delete_client', {
+                client: this.info.id,
+                host: this.info.server.host.name,
+                port: this.info.server.host.port,
+            });
+
+            this.loading = false;
+            createNotification({
+                text: 'Snapcast client successfully removed',
+                image: { icon: 'check' }
+            });
+        },
+    },
 });
 
diff --git a/platypush/backend/http/static/js/plugins/music.snapcast/group.js b/platypush/backend/http/static/js/plugins/music.snapcast/group.js
index 91f7d10a5..626bd5fc1 100644
--- a/platypush/backend/http/static/js/plugins/music.snapcast/group.js
+++ b/platypush/backend/http/static/js/plugins/music.snapcast/group.js
@@ -22,6 +22,59 @@ Vue.component('music-snapcast-group', {
 });
 
 Vue.component('music-snapcast-group-info', {
-    props: ['info'],
+    props: {
+        info: { type: Object }
+    },
+
+    data: function() {
+        return {
+            loading: false,
+        };
+    },
+
+    methods: {
+        onClientUpdate: async function(event) {
+            var clients = this.$refs.groupClients
+                .map(row => row.querySelector('input[type=checkbox]:checked'))
+                .filter(_ => _ != null)
+                .map(input => input.value);
+
+            this.loading = true;
+            await request('music.snapcast.group_set_clients', {
+                clients: clients,
+                group: this.info.group.id,
+                host: this.info.server.host.name,
+                port: this.info.server.host.port,
+            });
+
+            this.loading = false;
+            createNotification({
+                text: 'Snapcast group successfully updated',
+                image: {
+                    icon: 'check',
+                }
+            });
+        },
+
+        onStreamUpdate: async function(event) {
+            this.loading = true;
+            await request('music.snapcast.group_set_stream', {
+                stream_id: event.target.value,
+                group: this.info.group.id,
+                host: this.info.server.host.name,
+                port: this.info.server.host.port,
+            });
+
+            this.loading = false;
+            this.info.group.stream_id = event.target.value;
+
+            createNotification({
+                text: 'Snapcast stream successfully updated',
+                image: {
+                    icon: 'check',
+                }
+            });
+        },
+    },
 });
 
diff --git a/platypush/backend/http/static/js/plugins/music.snapcast/host.js b/platypush/backend/http/static/js/plugins/music.snapcast/host.js
index 16b971039..e27ab1472 100644
--- a/platypush/backend/http/static/js/plugins/music.snapcast/host.js
+++ b/platypush/backend/http/static/js/plugins/music.snapcast/host.js
@@ -15,6 +15,8 @@ Vue.component('music-snapcast-host', {
 });
 
 Vue.component('music-snapcast-host-info', {
-    props: ['info'],
+    props: {
+        info: { type: Object }
+    },
 });
 
diff --git a/platypush/backend/http/static/js/plugins/music.snapcast/index.js b/platypush/backend/http/static/js/plugins/music.snapcast/index.js
index bec4eae48..812e3d9be 100644
--- a/platypush/backend/http/static/js/plugins/music.snapcast/index.js
+++ b/platypush/backend/http/static/js/plugins/music.snapcast/index.js
@@ -4,6 +4,7 @@ Vue.component('music-snapcast', {
     data: function() {
         return {
             hosts: {},
+            ports: {},
             modal: {
                 host: {
                     visible: false,
@@ -24,6 +25,31 @@ Vue.component('music-snapcast', {
     },
 
     methods: {
+        _parseServerStatus: function(status) {
+            status.server.host.port = this.ports[status.server.host.name];
+            var groups = {};
+
+            for (const group of status.groups) {
+                var clients = {};
+                for (const client of group.clients) {
+                    clients[client.id] = client;
+                }
+
+                group.clients = clients;
+                groups[group.id] = group;
+            }
+
+            status.groups = groups;
+            var streams = {};
+
+            for (const stream of status.streams) {
+                streams[stream.id] = stream;
+            }
+
+            status.streams = streams;
+            Vue.set(this.hosts, status.server.host.name, status);
+        },
+
         refresh: async function() {
             let hosts = await request('music.snapcast.get_backend_hosts');
             let promises = Object.keys(hosts).map(
@@ -34,28 +60,8 @@ Vue.component('music-snapcast', {
             this.hosts = {};
 
             for (const status of statuses) {
-                status.server.host.port = hosts[status.server.host.name];
-                var groups = {};
-
-                for (const group of status.groups) {
-                    var clients = {};
-                    for (const client of group.clients) {
-                        clients[client.id] = client;
-                    }
-
-                    group.clients = clients;
-                    groups[group.id] = group;
-                }
-
-                status.groups = groups;
-                var streams = {};
-
-                for (const stream of status.streams) {
-                    streams[stream.id] = stream;
-                }
-
-                status.streams = streams;
-                Vue.set(this.hosts, status.server.host.name, status);
+                this.ports[status.server.host.name] = hosts[status.server.host.name];
+                this._parseServerStatus(status);
             }
         },
 
@@ -72,11 +78,11 @@ Vue.component('music-snapcast', {
         },
 
         onServerUpdate: function(event) {
-            this.refresh();
+            this._parseServerStatus(event.server);
         },
 
         onStreamUpdate: function(event) {
-            this.streams[event.stream_id] = event.stream;
+            this.hosts[event.host].streams[event.stream.id] = event.stream;
         },
 
         onClientVolumeChange: function(event) {
@@ -103,10 +109,21 @@ Vue.component('music-snapcast', {
                     this.modal[event.type].info = this.hosts[event.host];
                     break;
                 case 'group':
-                    this.modal[event.type].info = this.hosts[event.host].groups[event.group];
+                    this.modal[event.type].info.server = this.hosts[event.host].server;
+                    this.modal[event.type].info.group = this.hosts[event.host].groups[event.group];
+                    this.modal[event.type].info.streams = this.hosts[event.host].streams;
+                    this.modal[event.type].info.clients = {};
+
+                    for (const group of Object.values(this.hosts[event.host].groups)) {
+                        for (const client of Object.values(group.clients)) {
+                            this.modal[event.type].info.clients[client.id] = client;
+                        }
+                    }
+
                     break;
                 case 'client':
                     this.modal[event.type].info = this.hosts[event.host].groups[event.group].clients[event.client];
+                    this.modal[event.type].info.server = this.hosts[event.host].server;
                     break;
             }
 
diff --git a/platypush/backend/http/templates/plugins/music.snapcast/group.html b/platypush/backend/http/templates/plugins/music.snapcast/group.html
index d189a8282..7f7e80ea5 100644
--- a/platypush/backend/http/templates/plugins/music.snapcast/group.html
+++ b/platypush/backend/http/templates/plugins/music.snapcast/group.html
@@ -5,7 +5,7 @@
         <div class="head">
             <div class="col-10 name"
                  @click="bus.$emit('modal-show', {type:'group', group:id, host:server.name})">
-                <i class="icon fa fa-network-wired"></i>
+                <i class="icon fa" :class="{'fa-play': stream.status === 'playing', 'fa-stop': stream.status !== 'playing'}"></i>
                 {% raw %}{{  name || stream.id || id }}{% endraw %}
             </div>
             <div class="col-2 switch pull-right">
diff --git a/platypush/backend/http/templates/plugins/music.snapcast/index.html b/platypush/backend/http/templates/plugins/music.snapcast/index.html
index 4d48531f3..e4679d963 100644
--- a/platypush/backend/http/templates/plugins/music.snapcast/index.html
+++ b/platypush/backend/http/templates/plugins/music.snapcast/index.html
@@ -3,71 +3,15 @@
 <script type="text/x-template" id="tmpl-music-snapcast">
     <div class="row music-snapcast-container">
         <modal id="music-snapcast-host-info" title="Server info" v-model="modal.host.visible" ref="modalHost">
-            <music-snapcast-host-info v-if="modal.host.visible" :info="modal.host.info" inline-template>
-                <div class="info">
-                    <div class="row" v-if="info.server.host.ip && modal.host.info.server.host.ip.length">
-                        <div class="label col-3">IP Address</div>
-                        <div class="value col-9" v-text="modal.host.info.server.host.ip"></div>
-                    </div>
-
-                    <div class="row" v-if="info.server.host.mac && info.server.host.mac.length">
-                        <div class="label col-3">MAC Address</div>
-                        <div class="value col-9" v-text="info.server.host.mac"></div>
-                    </div>
-
-                    <div class="row" v-if="info.server.host.name && info.server.host.name.length">
-                        <div class="label col-3">Name</div>
-                        <div class="value col-9" v-text="info.server.host.name"></div>
-                    </div>
-
-                    <div class="row" v-if="info.server.host.port">
-                        <div class="label col-3">Port</div>
-                        <div class="value col-9" v-text="info.server.host.port"></div>
-                    </div>
-
-                    <div class="row" v-if="info.server.host.os && info.server.host.os.length">
-                        <div class="label col-3">OS</div>
-                        <div class="value col-9" v-text="info.server.host.os"></div>
-                    </div>
-
-                    <div class="row" v-if="info.server.host.arch && info.server.host.arch.length">
-                        <div class="label col-3">Architecture</div>
-                        <div class="value col-9" v-text="info.server.host.arch"></div>
-                    </div>
-
-                    <div class="row">
-                        <div class="label col-3">Server name</div>
-                        <div class="value col-9" v-text="info.server.snapserver.name"></div>
-                    </div>
-
-                    <div class="row">
-                        <div class="label col-3">Server version</div>
-                        <div class="value col-9" v-text="info.server.snapserver.version"></div>
-                    </div>
-
-                    <div class="row">
-                        <div class="label col-3">Protocol version</div>
-                        <div class="value col-9" v-text="info.server.snapserver.protocolVersion"></div>
-                    </div>
-
-                    <div class="row">
-                        <div class="label col-3">Control protocol version</div>
-                        <div class="value col-9" v-text="info.server.snapserver.controlProtocolVersion"></div>
-                    </div>
-                </div>
-            </music-snapcast-host-info>
+            {% include 'plugins/music.snapcast/modals/host.html' %}
         </modal>
 
         <modal id="music-snapcast-group-info" title="Group info" v-if="modal.group.visible" v-model="modal.group.visible" ref="modalGroup">
-            <music-snapcast-group-info :info="modal.group.info" inline-template>
-                <p>IT WORKED!</p>
-            </music-snapcast-group-info>
+            {% include 'plugins/music.snapcast/modals/group.html' %}
         </modal>
 
         <modal id="music-snapcast-client-info" title="Client info" v-if="modal.client.visible" v-model="modal.client.visible" ref="modalClient">
-            <music-snapcast-client-info :info="modal.client.info" inline-template>
-                <p>IT WORKED!</p>
-            </music-snapcast-client-info>
+            {% include 'plugins/music.snapcast/modals/client.html' %}
         </modal>
 
         <music-snapcast-host
diff --git a/platypush/backend/http/templates/plugins/music.snapcast/modals/client.html b/platypush/backend/http/templates/plugins/music.snapcast/modals/client.html
new file mode 100644
index 000000000..d22cb36e5
--- /dev/null
+++ b/platypush/backend/http/templates/plugins/music.snapcast/modals/client.html
@@ -0,0 +1,76 @@
+<music-snapcast-client-info :info="modal.client.info" inline-template>
+    <div class="info">
+        <div class="row">
+            <div class="label col-3">ID</div>
+            <div class="value col-9" v-text="info.id"></div>
+        </div>
+
+        <div class="row" v-if="info.config.name.length || info.host.name">
+            <div class="label col-3">Name</div>
+            <div class="value col-9" v-text="info.config.name.length || info.host.name"></div>
+        </div>
+
+        <div class="row">
+            <div class="label col-3">Connected</div>
+            <div class="value col-9" v-text="info.connected"></div>
+        </div>
+
+        <div class="row">
+            <div class="label col-3">Volume</div>
+            <div class="value col-9">{% raw %}{{ info.config.volume.percent }}%{% endraw %}</div>
+        </div>
+
+        <div class="row">
+            <div class="label col-3">Muted</div>
+            <div class="value col-9" v-text="info.config.volume.muted"></div>
+        </div>
+
+        <div class="row">
+            <div class="label col-3">Latency</div>
+            <div class="value col-9" v-text="info.config.latency"></div>
+        </div>
+
+        <div class="row" v-if="info.host.ip && info.host.ip.length">
+            <div class="label col-3">IP Address</div>
+            <div class="value col-9" v-text="info.host.ip"></div>
+        </div>
+
+        <div class="row" v-if="info.host.mac && info.host.mac.length">
+            <div class="label col-3">MAC Address</div>
+            <div class="value col-9" v-text="info.host.mac"></div>
+        </div>
+
+        <div class="row" v-if="info.host.os && info.host.os.length">
+            <div class="label col-3">OS</div>
+            <div class="value col-9" v-text="info.host.os"></div>
+        </div>
+
+        <div class="row" v-if="info.host.arch && info.host.arch.length">
+            <div class="label col-3">Architecture</div>
+            <div class="value col-9" v-text="info.host.arch"></div>
+        </div>
+
+        <div class="row">
+            <div class="label col-3">Client name</div>
+            <div class="value col-9" v-text="info.snapclient.name"></div>
+        </div>
+
+        <div class="row">
+            <div class="label col-3">Client version</div>
+            <div class="value col-9" v-text="info.snapclient.version"></div>
+        </div>
+
+        <div class="row">
+            <div class="label col-3">Protocol version</div>
+            <div class="value col-9" v-text="info.snapclient.protocolVersion"></div>
+        </div>
+
+        <div class="row buttons">
+            <button type="button" class="delete" :disabled="loading" @click="deleteClient">
+                <i class="fa fa-trash"></i>
+                &nbsp; Delete client
+            </button>
+        </div>
+    </div>
+</music-snapcast-client-info>
+
diff --git a/platypush/backend/http/templates/plugins/music.snapcast/modals/group.html b/platypush/backend/http/templates/plugins/music.snapcast/modals/group.html
new file mode 100644
index 000000000..a0c90bb47
--- /dev/null
+++ b/platypush/backend/http/templates/plugins/music.snapcast/modals/group.html
@@ -0,0 +1,56 @@
+<music-snapcast-group-info :info="modal.group.info" inline-template>
+    <div class="info">
+        <div class="section clients" v-if="Object.keys(info.clients).length > 0">
+            <div class="title">Clients</div>
+            <div class="row" ref="groupClients" v-for="client in info.clients">
+                <input type="checkbox"
+                       @input="onClientUpdate"
+                       class="client"
+                       :id="'snapcast-client-' + client.id"
+                       :value="client.id"
+                       :disabled="loading"
+                       :checked="client.id in info.group.clients">
+                <label :for="'snapcast-client-' + client.id" v-text="client.host.name"></label>
+            </div>
+        </div>
+
+        <div class="section streams" v-if="info.group.stream_id">
+            <div class="title">Stream</div>
+            <div class="row">
+                <div class="label col-3">ID</div>
+                <div class="value col-9">
+                    <select @input="onStreamUpdate" :disabled="loading" ref="streamSelect">
+                        <option
+                                @input="onStreamUpdate"
+                                v-for="stream in info.streams"
+                                v-text="info.streams[info.group.stream_id].id"
+                                :name="stream.id"
+                                :selected="stream.id === info.group.stream_id">
+                        </option>
+                    </select>
+                </div>
+            </div>
+
+            <div class="row">
+                <div class="label col-3">Status</div>
+                <div class="value col-9" v-text="info.streams[info.group.stream_id].status"></div>
+            </div>
+
+            <div class="row" v-if="info.streams[info.group.stream_id].uri.host">
+                <div class="label col-3">Host</div>
+                <div class="value col-9" v-text="info.streams[info.group.stream_id].uri.host"></div>
+            </div>
+
+            <div class="row">
+                <div class="label col-3">Path</div>
+                <div class="value col-9" v-text="info.streams[info.group.stream_id].uri.path"></div>
+            </div>
+
+            <div class="row">
+                <div class="label col-3">URI</div>
+                <div class="value col-9" v-text="info.streams[info.group.stream_id].uri.raw"></div>
+            </div>
+        </div>
+    </div>
+</music-snapcast-group-info>
+
diff --git a/platypush/backend/http/templates/plugins/music.snapcast/modals/host.html b/platypush/backend/http/templates/plugins/music.snapcast/modals/host.html
new file mode 100644
index 000000000..24954688a
--- /dev/null
+++ b/platypush/backend/http/templates/plugins/music.snapcast/modals/host.html
@@ -0,0 +1,54 @@
+<music-snapcast-host-info v-if="modal.host.visible" :info="modal.host.info" inline-template>
+    <div class="info">
+        <div class="row" v-if="info.server.host.ip && modal.host.info.server.host.ip.length">
+            <div class="label col-3">IP Address</div>
+            <div class="value col-9" v-text="modal.host.info.server.host.ip"></div>
+        </div>
+
+        <div class="row" v-if="info.server.host.mac && info.server.host.mac.length">
+            <div class="label col-3">MAC Address</div>
+            <div class="value col-9" v-text="info.server.host.mac"></div>
+        </div>
+
+        <div class="row" v-if="info.server.host.name && info.server.host.name.length">
+            <div class="label col-3">Name</div>
+            <div class="value col-9" v-text="info.server.host.name"></div>
+        </div>
+
+        <div class="row" v-if="info.server.host.port">
+            <div class="label col-3">Port</div>
+            <div class="value col-9" v-text="info.server.host.port"></div>
+        </div>
+
+        <div class="row" v-if="info.server.host.os && info.server.host.os.length">
+            <div class="label col-3">OS</div>
+            <div class="value col-9" v-text="info.server.host.os"></div>
+        </div>
+
+        <div class="row" v-if="info.server.host.arch && info.server.host.arch.length">
+            <div class="label col-3">Architecture</div>
+            <div class="value col-9" v-text="info.server.host.arch"></div>
+        </div>
+
+        <div class="row">
+            <div class="label col-3">Server name</div>
+            <div class="value col-9" v-text="info.server.snapserver.name"></div>
+        </div>
+
+        <div class="row">
+            <div class="label col-3">Server version</div>
+            <div class="value col-9" v-text="info.server.snapserver.version"></div>
+        </div>
+
+        <div class="row">
+            <div class="label col-3">Protocol version</div>
+            <div class="value col-9" v-text="info.server.snapserver.protocolVersion"></div>
+        </div>
+
+        <div class="row">
+            <div class="label col-3">Control protocol version</div>
+            <div class="value col-9" v-text="info.server.snapserver.controlProtocolVersion"></div>
+        </div>
+    </div>
+</music-snapcast-host-info>
+
diff --git a/platypush/backend/music/snapcast.py b/platypush/backend/music/snapcast.py
index dab792a92..9823fa3af 100644
--- a/platypush/backend/music/snapcast.py
+++ b/platypush/backend/music/snapcast.py
@@ -34,7 +34,7 @@ class MusicSnapcastBackend(Backend):
     _DEFAULT_POLL_SECONDS = 10   # Poll servers each 10 seconds
     _SOCKET_EOL = '\r\n'.encode()
 
-    def __init__(self, hosts=['localhost'], ports=[_DEFAULT_SNAPCAST_PORT],
+    def __init__(self, hosts=None, ports=None,
                  poll_seconds=_DEFAULT_POLL_SECONDS, *args, **kwargs):
         """
         :param hosts: List of Snapcast server names or IPs to monitor (default:
@@ -52,6 +52,11 @@ class MusicSnapcastBackend(Backend):
 
         super().__init__(*args, **kwargs)
 
+        if ports is None:
+            ports = [self._DEFAULT_SNAPCAST_PORT]
+        if hosts is None:
+            hosts = ['localhost']
+
         self.hosts = hosts[:]
         self.ports = ports[:]
         self.poll_seconds = poll_seconds
@@ -123,10 +128,10 @@ class MusicSnapcastBackend(Backend):
         elif msg.get('method') == 'Group.OnStreamChanged':
             group_id = msg.get('params', {}).get('id')
             stream_id = msg.get('params', {}).get('stream_id')
-            evt = GroupStreamChangeEvent(host=host, group=group, stream=stream)
+            evt = GroupStreamChangeEvent(host=host, group=group_id, stream=stream_id)
         elif msg.get('method') == 'Stream.OnUpdate':
-            stream_id = msg.get('params', {}).get('stream_id')
             stream = msg.get('params', {}).get('stream')
+            stream_id = stream.get('id')
             evt = StreamUpdateEvent(host=host, stream_id=stream_id, stream=stream)
         elif msg.get('method') == 'Server.OnUpdate':
             server = msg.get('params', {}).get('server')
@@ -137,10 +142,9 @@ class MusicSnapcastBackend(Backend):
     def _client(self, host, port):
         def _thread():
             set_thread_name('Snapcast-' + host)
-            status = None
 
             try:
-                status = self._status(host, port)
+                self._status(host, port)
             except Exception as e:
                 self.logger.warning(('Exception while getting the status ' +
                                      'of the Snapcast server {}:{}: {}').
@@ -200,7 +204,7 @@ class MusicSnapcastBackend(Backend):
         except Exception as e:
             self.logger.warning('Unable to connect to {}:{}: {}'.format(
                 host, port, str(e)))
-            self._socks[hosts] = None
+            self._socks[host] = None
 
     def run(self):
         super().run()