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<template>
<article v-if="show" class="message" :class="message.style">
<div v-if="message.title || message.icon" class="message-header">
<p>
<i v-if="message.icon" :class="`fa-fw ${message.icon}`"></i>
{{ message.title }}
</p>
</div>
<div
v-if="message.content"
class="message-body"
v-html="message.content"
></div>
</article>
</template>
<script>
export default {
name: "Message",
props: {
item: Object,
},
data: function () {
return {
message: {},
};
},
created: async function () {
// Look for a new message if an endpoint is provided.
this.message = Object.assign({}, this.item);
await this.getMessage();
},
computed: {
show: function () {
return this.message.title || this.message.content;
},
},
watch: {
item: function (item) {
this.message = Object.assign({}, item);
},
},
methods: {
getMessage: async function () {
if (!this.item) {
return;
}
if (this.item.url) {
let fetchedMessage = await this.downloadMessage(this.item.url);
if (this.item.mapping) {
fetchedMessage = this.mapRemoteMessage(fetchedMessage);
}
// keep the original config value if no value is provided by the endpoint
const message = this.message;
for (const prop of ["title", "style", "content", "icon"]) {
if (prop in fetchedMessage && fetchedMessage[prop] !== null) {
message[prop] = fetchedMessage[prop];
}
}
this.message = { ...message }; // Force computed property to re-evaluate
}
if (this.item.refreshInterval) {
setTimeout(this.getMessage, this.item.refreshInterval);
}
},
downloadMessage: function (url) {
return fetch(url).then(function (response) {
if (response.status != 200) {
return;
}
return response.json();
});
},
mapRemoteMessage: function (message) {
let mapped = {};
// map property from message into mapped according to mapping config (only if field has a value):
for (const prop in this.item.mapping)
if (message[this.item.mapping[prop]])
mapped[prop] = message[this.item.mapping[prop]];
return mapped;
},
},
};
</script>
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