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// Copyright © 2020 Jakob L. Kreuze <zerodaysfordays@sdf.org>
//
// This file is part of бирка-тян.
//
// бирка-тян is free software; you can redistribute it and/or modify it
// under the terms of the GNU Affero General Public License as published
// by the Free Software Foundation; either version 3 of the License, or
// (at your option) any later version.
//
// бирка-тян is distributed in the hope that it will be useful, but
// WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public
// License along with бирка-тян. If not, see <http://www.gnu.org/licenses/>.
#![feature(proc_macro_hygiene, decl_macro)]
#[macro_use]
extern crate anyhow;
extern crate image;
#[macro_use]
extern crate rocket;
extern crate rocket_contrib;
#[macro_use]
extern crate serde_derive;
mod database;
use anyhow::Result;
use database::{hash_file, Query, TagDatabase};
use image::ImageFormat;
use rocket::{Data, State};
use rocket_contrib::json::Json;
use rocket_contrib::serve::StaticFiles;
use rocket_contrib::templates::Template;
use std::env;
use std::fs;
use std::fs::File;
use std::os::unix::fs::symlink;
use std::path::Path;
use std::sync::Mutex;
type SiteState<'a> = State<'a, Mutex<DatabaseConnection>>;
struct DatabaseConnection {
tb: TagDatabase,
image_dir: String,
}
impl DatabaseConnection {
fn new() -> Result<Self> {
let bin = env::current_exe()?.canonicalize()?;
let bin_dir = bin.parent().unwrap();
let image_dir = String::from(bin_dir.join("image/").to_str().unwrap());
let tb_path = bin_dir.join("birka.db");
let tb = TagDatabase::new(tb_path.to_str().unwrap())?;
Ok(DatabaseConnection { tb, image_dir })
}
}
#[get("/")]
fn index() -> Template {
let context = HashMap::<&str, &str>::new();
Template::render("index", &context)
}
#[get("/posts?<tags>")]
fn display_posts(conn: SiteState, tags: String) -> Template {
#[derive(Serialize)]
struct TagResult {
name: String,
count: i64,
}
#[derive(Serialize)]
struct Asdf {
tags: Vec<TagResult>,
images: Vec<ImageResult>,
}
let tag_results = {
let tb = &conn.inner().lock().unwrap().tb;
tb.top_tags(20)
.unwrap()
.iter()
.map(|tup| TagResult {
name: tup.1.clone(),
count: tup.0,
})
.collect()
};
let images = get_posts(conn, tags).into_inner();
let context = Asdf {
tags: tag_results,
images,
};
Template::render("index", context)
}
#[derive(Serialize)]
struct ImageResult {
filename: String,
thumb_filename: String,
tags: Vec<String>,
}
#[get("/posts?<tags>")]
fn get_posts(conn: SiteState, tags: String) -> Json<Vec<ImageResult>> {
let tb = &conn.inner().lock().unwrap().tb;
let tags = tags.split(",").collect::<Vec<&str>>();
let results = tb
.query(Query {
tags: &tags[..],
last_id: Some(0),
limit: Some(50),
})
.unwrap();
Json(
results
.iter()
.map(|image| ImageResult {
filename: image.filename.clone(),
thumb_filename: thumb_filename(&image.filename),
tags: tb.tags_for_image(image.id).unwrap(),
})
.collect(),
)
}
#[post("/posts/<filename>", data = "<data>")]
fn put_posts(conn: SiteState, filename: String, data: Data) -> Json<&str> {
let conn = conn.inner().lock().unwrap();
let path = Path::new(&conn.image_dir).join(filename);
data.stream_to_file(&path).unwrap();
conn.tb
.import_image(&path, &hash_file(&path).unwrap())
.unwrap();
Json("uploaded!")
}
fn thumb_filename(filename: &str) -> String {
String::from(format!(
"{}_thumb.png",
// Strip extension.
if let Some(n) = filename.rfind('.') {
&filename[..n]
} else {
&filename[..]
}
))
}
/// Maybe initialize the directory for storing image symlinks and thumbnails.
fn create_image_directory(conn: &DatabaseConnection) {
fs::create_dir(&conn.image_dir).ok();
for image in conn.tb.images_by_tags(&vec![][..]).unwrap() {
let src = format!("{}/{}", image.orig_dir, image.filename);
let dst = format!("{}/{}", conn.image_dir, image.filename);
symlink(&src, &dst).ok();
let stem = Path::new(&dst).file_stem().unwrap().to_str().unwrap();
let thumb_path = format!("{}/{}", conn.image_dir, thumb_filename(&stem));
let thumb_path = Path::new(&thumb_path);
if !thumb_path.exists() {
let im = image::open(&Path::new(&src)).unwrap();
let fout = &mut File::create(&thumb_path).unwrap();
im.thumbnail(100, 100)
.write_to(fout, ImageFormat::Png)
.unwrap();
}
}
}
fn main() {
let conn = DatabaseConnection::new().unwrap();
let image_dir = conn.image_dir.clone();
create_image_directory(&conn);
rocket::ignite()
.attach(Template::fairing())
.manage(Mutex::new(conn))
.mount("/public", StaticFiles::from("./static/"))
.mount("/image", StaticFiles::from(image_dir))
.mount("/", routes![index, display_posts])
.mount("/api", routes![get_posts, put_posts])
.launch();
}
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