models/MatrixProfile.ts

import { MentionPill, UserID } from "..";

/**
 * Profile information commonly associated with Matrix profiles
 * @category Models
 */
export interface MatrixProfileInfo {
    /**
     * The display name of the user, if any.
     */
    displayname?: string;

    /**
     * A URL to the user's avatar, if any.
     */
    avatar_url?: string;
}

/**
 * Represents a user's profile, possibly in a room.
 * @category Models
 */
export class MatrixProfile {
    /**
     * Creates a new profile representation for a user.
     * @param {string} userId The user ID the profile is for.
     * @param {MatrixProfile} profile The profile itself.
     */
    constructor(private userId: string, private profile: MatrixProfileInfo) {
    }

    /**
     * The display name for the user. This will always return a value, though it
     * may be based upon their user ID if no explicit display name is set.
     */
    public get displayName(): string {
        if (!this.profile?.displayname) return new UserID(this.userId).localpart;
        return this.profile.displayname;
    }

    /**
     * The avatar URL for the user. If the user does not have an avatar, this will
     * be null.
     */
    public get avatarUrl(): string {
        return this.profile?.avatar_url || null; // enforce null over boolean semantics
    }

    /**
     * A mention pill for this user.
     */
    public get mention(): MentionPill {
        return MentionPill.withDisplayName(this.userId, this.displayName);
    }
}