import { Handlers } from "$fresh/server.ts";
import { json } from "@lib/helpers.ts";
import * as tmdb from "@lib/tmdb.ts";
import { fileExtension } from "https://deno.land/x/file_extension@v2.1.0/mod.ts";
import { formatDate, isString, safeFileName } from "@lib/string.ts";
import { AccessDeniedError, BadRequestError } from "@lib/errors.ts";
import { createResource, fetchResource } from "@lib/marka/index.ts";
import { ReviewResource } from "@lib/marka/schema.ts";

export const handler: Handlers = {
  async GET(_, ctx) {
    const movie = await fetchResource(`movies/${ctx.params.name}`);
    return json(movie?.content);
  },
  async POST(_, ctx) {
    const session = ctx.state.session;
    if (!session) throw new AccessDeniedError();

    const tmdbId = parseInt(ctx.params.name);
    if (Number.isNaN(tmdbId)) throw new BadRequestError();

    const [movieDetails, movieCredits] = await Promise.all([
      tmdb.getMovie(tmdbId),
      tmdb.getMovieCredits(tmdbId),
    ]);

    const name = movieDetails.title ||
      movieDetails.original_title ||
      ctx.params.name;

    const posterPath = movieDetails.poster_path;
    let finalPath = "";
    if (posterPath) {
      const poster = await tmdb.getMoviePoster(posterPath);
      const extension = fileExtension(posterPath);
      finalPath = `movies/images/${safeFileName(name)}_cover.${extension}`;
      await createResource(finalPath, poster);
    }

    const keywords = movieDetails.genres
      ?.map((g) => g.name?.toLowerCase())
      .filter(isString) || [];

    const movie: ReviewResource["content"] = {
      _type: "Review",
      image: `resources/${finalPath}`,
      datePublished: formatDate(movieDetails.release_date),
      tmdbId,
      author: {
        _type: "Person",
        name: movieCredits.crew?.filter?.((person) =>
          person.job === "Director"
        )[0]?.name,
      },
      itemReviewed: {
        name,
      },
      reviewBody: "",
      keywords,
    };

    const fileName = `${safeFileName(name)}.md`;

    await createResource(`movies/${fileName}`, movie);

    return json({ name: fileName });
  },
};