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133 lines
3.6 KiB
133 lines
3.6 KiB
import 'dart:convert';
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/// Represents a Nostr user profile (metadata from kind 0 events).
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class NostrProfile {
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/// Public key (npub or hex).
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final String publicKey;
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/// Display name or username.
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final String? name;
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/// About/bio text.
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final String? about;
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/// Profile picture URL.
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final String? picture;
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/// Website URL.
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final String? website;
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/// NIP-05 identifier (e.g., user@domain.com).
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final String? nip05;
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/// Banner image URL.
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final String? banner;
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/// LUD16 (Lightning address).
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final String? lud16;
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/// Raw metadata JSON for additional fields.
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final Map<String, dynamic> rawMetadata;
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/// Timestamp when profile was last updated.
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final DateTime? updatedAt;
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/// Creates a [NostrProfile] instance.
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NostrProfile({
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required this.publicKey,
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this.name,
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this.about,
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this.picture,
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this.website,
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this.nip05,
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this.banner,
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this.lud16,
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Map<String, dynamic>? rawMetadata,
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this.updatedAt,
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}) : rawMetadata = rawMetadata ?? {};
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/// Creates a [NostrProfile] from Nostr metadata event content (JSON string).
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///
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/// [publicKey] - The public key of the profile owner.
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/// [content] - JSON string from kind 0 event content.
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/// [updatedAt] - Optional timestamp when profile was updated.
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factory NostrProfile.fromEventContent({
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required String publicKey,
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required String content,
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DateTime? updatedAt,
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}) {
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try {
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final metadata = jsonDecode(content) as Map<String, dynamic>;
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return NostrProfile(
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publicKey: publicKey,
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name: metadata['name'] as String?,
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about: metadata['about'] as String?,
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picture: metadata['picture'] as String?,
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website: metadata['website'] as String?,
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nip05: metadata['nip05'] as String?,
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banner: metadata['banner'] as String?,
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lud16: metadata['lud16'] as String?,
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rawMetadata: metadata,
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updatedAt: updatedAt ?? DateTime.now(),
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);
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} catch (e) {
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// Return minimal profile if parsing fails
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return NostrProfile(
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publicKey: publicKey,
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rawMetadata: {},
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updatedAt: updatedAt ?? DateTime.now(),
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);
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}
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}
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/// Creates a [NostrProfile] from a JSON map.
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factory NostrProfile.fromJson(Map<String, dynamic> json) {
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return NostrProfile(
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publicKey: json['publicKey'] as String,
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name: json['name'] as String?,
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about: json['about'] as String?,
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picture: json['picture'] as String?,
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website: json['website'] as String?,
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nip05: json['nip05'] as String?,
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banner: json['banner'] as String?,
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lud16: json['lud16'] as String?,
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rawMetadata: json['rawMetadata'] as Map<String, dynamic>? ?? {},
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updatedAt: json['updatedAt'] != null
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? DateTime.parse(json['updatedAt'] as String)
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: null,
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);
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}
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/// Converts [NostrProfile] to JSON.
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Map<String, dynamic> toJson() {
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return {
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'publicKey': publicKey,
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'name': name,
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'about': about,
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'picture': picture,
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'website': website,
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'nip05': nip05,
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'banner': banner,
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'lud16': lud16,
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'rawMetadata': rawMetadata,
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'updatedAt': updatedAt?.toIso8601String(),
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};
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}
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/// Gets display name (name, nip05, or public key prefix).
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String get displayName {
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if (name != null && name!.isNotEmpty) return name!;
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if (nip05 != null && nip05!.isNotEmpty) return nip05!;
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return publicKey.length > 16
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? '${publicKey.substring(0, 8)}...${publicKey.substring(publicKey.length - 8)}'
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: publicKey;
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}
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@override
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String toString() {
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return 'NostrProfile(publicKey: ${publicKey.substring(0, 8)}..., name: $name)';
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}
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}
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