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import * as e621 from "../api/e926";
import * as mastodon from "../api/mastodon";
import config from "../config";
import { imageSize } from "image-size";
import Sharp from "sharp";

export async function postSpecificPicture(id: number) {
    console.log(`Fetching post ${id}...`);

    const post = await e621.getPostById(id);

    console.log(`Got ${post.id}`);

    await handlePost(post);
}

export async function postRandomPicture() {
  console.log("Fetching random post...");

  const queryIndex = Math.floor(Math.random() * config.e621.queries.length);
  const query = config.e621.queries[queryIndex];
  const post = await e621.getRandomPost(query);

  console.log(`Got ${post.id} via query ${queryIndex}`);

  await handlePost(post);
}

async function handlePost(post: e621.Post) {
    const cws = config.cw.filter((w) => post.tags.general.includes(w));

    console.log(`Downloading image...`);

    let file = await e621.client.get(post.file.url).buffer();

    const dims = imageSize(file);
    const width = dims.width ?? 0;
    const height = dims.height ?? 0;

    if (Buffer.byteLength(file) > 1024 * 1024 * 9 || width > 2000 || height > 2000) {
        console.log(`Compressing...`);

        file = await Sharp(file)
            .resize(2000, 2000, { fit: "inside", withoutEnlargement: true })
            .jpeg({ quality: 80, mozjpeg: true })
            .toBuffer();
    }

    console.log(`Uploading...`);

    const attachment = await mastodon.upload(file, post.id.toString(10));

    console.log(`Posting status...`);

    const status = await mastodon.createStatus(`https://e926.net/posts/${post.id}`, post.sources, cws, attachment.id);

    console.log(`Done! ${status.url}`);
}