use fastly::{mime, Error, Request, Response};
use base64::prelude::*;

const BASE64_GIF_PIXEL: &str =
    "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";

#[fastly::main]
fn main(_: Request) -> Result<Response, Error> {
    // Decode the base64 GIF string to bytes.
    let gif_bytes = BASE64_STANDARD.decode(BASE64_GIF_PIXEL).expect("Invalid GIF");

    Ok(Response::from_body(gif_bytes).with_content_type(mime::IMAGE_GIF))
}