import {
  parseDocument,
  parseFrontmatter,
  renderMarkdown,
} from "@lib/documents.ts";

export type Movie = {
  id: string;
  name: string;
  description: string;
  hashtags: string[];
  meta: {
    published: Date;
    image: string;
    author: string;
    rating: number;
    status: "not-seen" | "watch-again" | "finished";
  };
};

export function parseMovie(original: string, id: string): Movie {
  const doc = parseDocument(original);

  let meta = {} as Movie["meta"];
  let name = "";

  const range = [Infinity, -Infinity];

  for (const child of doc.children) {
    if (child.type === "yaml") {
      meta = parseFrontmatter(child.value) as Movie["meta"];

      if (meta["rating"] && typeof meta["rating"] === "string") {
        meta.rating = [...meta.rating?.matchAll("⭐")].length;
      }

      continue;
    }

    if (
      child.type === "heading" && child.depth === 1 && !name &&
      child.children.length === 1 && child.children[0].type === "text"
    ) {
      name = child.children[0].value;
      continue;
    }

    if (name) {
      const start = child.position?.start.offset || Infinity;
      const end = child.position?.end.offset || -Infinity;
      if (start < range[0]) range[0] = start;
      if (end > range[1]) range[1] = end;
    }
  }

  let description = original.slice(range[0], range[1]);
  const hashtags = [];
  for (const [hashtag] of original.matchAll(/\B(\#[a-zA-Z]+\b)(?!;)/g)) {
    hashtags.push(hashtag.replace(/\#/g, ""));
    description = description.replace(hashtag, "");
  }

  return {
    id,
    name,
    hashtags,
    description: renderMarkdown(description),
    meta,
  };
}