import { env } from "bun";
import logger from "src/logger";
import GelbooruApiResponse from "src/types/GelbooruApiResponse";
import GelbooruServiceResponse from "src/types/GelbooruServiceResponse";

class GelbooruApiService {
  async get(): Promise<GelbooruServiceResponse> {
    const LIMIT = env.GELBOORU_IMAGES_PER_REQUEST || 100;
    const TAGS = encodeURIComponent(env.GELBOORU_TAGS || "");
    const url: string = `https://gelbooru.com/index.php?page=dapi&s=post&q=index&limit=${LIMIT}&json=1&tags=${TAGS}`;

    const response: GelbooruApiResponse = (await fetch(url).then(
      async (res) => {
        if (!res.ok) {
          logger.error(`${res.status}: ${res.statusText}, ${await res.text()}`);
          throw new Error("Error fetching images");
        } else {
          return res.json();
        }
      }
    )) as GelbooruApiResponse;

    return {
      posts: response.post.map((post) => ({
        url: post.file_url,
        tags: post.tags.split(" "),
      })),
    };
  }
}

export default new GelbooruApiService();