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();