matrix-public-archive/shared/viewmodels/AvatarViewModel.js

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'use strict';
const { ViewModel, avatarInitials, getIdentifierColorNumber } = require('hydrogen-view-sdk');
const assert = require('matrix-public-archive-shared/lib/assert');
const { mxcUrlToHttpThumbnail } = require('matrix-public-archive-shared/lib/mxc-url-to-http');
class AvatarViewModel extends ViewModel {
constructor(options) {
super(options);
const { homeserverUrlToPullMediaFrom, avatarUrl, avatarTitle, avatarLetterString, entityId } =
options;
assert(!avatarUrl || homeserverUrlToPullMediaFrom);
assert(avatarTitle);
assert(avatarLetterString);
assert(entityId);
this._homeserverUrlToPullMediaFrom = homeserverUrlToPullMediaFrom;
this._avatarUrl = avatarUrl;
this._avatarTitle = avatarTitle;
this._avatarLetterString = avatarLetterString;
this._entityId = entityId;
}
avatarUrl(size) {
if (this._avatarUrl) {
return mxcUrlToHttpThumbnail({
mxcUrl: this._avatarUrl,
homeserverUrl: this._homeserverUrlToPullMediaFrom,
size,
});
}
return null;
}
get avatarTitle() {
return this._avatarTitle;
}
get avatarLetter() {
return avatarInitials(this._avatarLetterString);
}
get avatarColorNumber() {
return getIdentifierColorNumber(this._entityId);
}
}
module.exports = AvatarViewModel;