import { nip19 } from "@nostr/tools";
import { NEvent } from "../nostr.ts";
import { render as renderMarkdown } from "@deno/gfm";

export default class Article {
  event: NEvent;

  constructor(event: NEvent) {
    this.event = event;
  }

  get identifier(): string {
    const tag = this.event.tags.find((t) => t[0] === "d");
    return tag ? tag[1] : "";
  }

  get title(): string {
    const tag = this.event.tags.find((t) => t[0] === "title");
    return tag ? tag[1] : "Untitled";
  }

  get summary(): string {
    const tag = this.event.tags.find((t) => t[0] === "summary");
    return tag ? tag[1] : "";
  }

  get publishedAt(): number {
    const tag = this.event.tags.find((t) => t[0] === "published_at");
    return tag ? parseInt(tag[1]) : this.event.created_at;
  }

  get updatedAt(): number {
    return this.event.created_at;
  }

  get html(): string {
    return renderMarkdown(this.event.content);
  }

  get naddr(): string {
    return nip19.naddrEncode({
      identifier: this.identifier,
      pubkey: this.event.pubkey,
      kind: this.event.kind,
    });
  }
}