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/*
This file is part of jellything (https://codeberg.org/metamuffin/jellything)
which is licensed under the GNU Affero General Public License (version 3); see /COPYING.
Copyright (C) 2023 metamuffin <metamuffin.org>
*/
use crate::{
database::Database,
routes::ui::{account::session::Session, error::MyError, CacheControlFile},
};
use anyhow::{anyhow, Context};
use jellybase::{AssetLocationExt, permission::NodePermissionExt};
use jellycommon::AssetLocation;
use log::info;
use rocket::{get, http::ContentType, FromFormField, State, UriDisplayQuery};
use std::{path::PathBuf, str::FromStr};
use tokio::fs::File;
#[derive(FromFormField, UriDisplayQuery)]
pub enum AssetRole {
#[field(value = "poster")]
Poster,
#[field(value = "backdrop")]
Backdrop,
}
#[get("/n/<id>/asset?<role>&<width>")]
pub async fn r_item_assets(
session: Session,
db: &State<Database>,
id: &str,
role: AssetRole,
width: Option<usize>,
) -> Result<(ContentType, CacheControlFile), MyError> {
let node = db
.node
.get(&id.to_string())?
.only_if_permitted(&session.user.permissions)
.ok_or(anyhow!("node does not exist"))?;
let mut asset = match role {
AssetRole::Backdrop => node.private.backdrop,
AssetRole::Poster => node.private.poster,
};
if let None = asset {
if let Some(parent) = &node.public.path.last() {
let parent = db.node.get(parent)?.ok_or(anyhow!("node does not exist"))?;
asset = match role {
AssetRole::Backdrop => parent.private.backdrop,
AssetRole::Poster => parent.private.poster,
};
}
};
let asset = asset.unwrap_or(AssetLocation::Assets(
PathBuf::from_str("fallback.jpeg").unwrap(),
));
// fit the resolution into a finite set so the maximum cache is finite too.
let width = 2usize.pow(width.unwrap_or(2048).clamp(128, 8196).ilog2());
let path = jellytranscoder::image::transcode(asset, 50., 5, width)
.await
.context("transcoding asset")?;
info!("loading asset from {path:?}");
Ok((
ContentType::AVIF,
CacheControlFile::new(File::open(path.path()).await.context("opening file")?).await,
))
}
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