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/*
* Copyright (C) 2021  Aravinth Manivannan <realaravinth@batsense.net>
*
* This program 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.
*
* This program 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 this program.  If not, see <https://www.gnu.org/licenses/>.
*/
use std::borrow::Cow;

use actix_web::body::Body;
use actix_web::{get, http::header, web, HttpResponse, Responder};
use log::debug;
use mime_guess::from_path;
use rust_embed::RustEmbed;

use crate::CACHE_AGE;

#[derive(RustEmbed)]
#[folder = "assets/"]
struct Asset;

fn handle_assets(path: &str) -> HttpResponse {
    match Asset::get(path) {
        Some(content) => {
            let body: Body = match content {
                Cow::Borrowed(bytes) => bytes.into(),
                Cow::Owned(bytes) => bytes.into(),
            };

            HttpResponse::Ok()
                .insert_header(header::CacheControl(vec![
                    header::CacheDirective::Public,
                    header::CacheDirective::Extension("immutable".into(), None),
                    header::CacheDirective::MaxAge(CACHE_AGE),
                ]))
                .content_type(from_path(path).first_or_octet_stream().as_ref())
                .body(body)
        }
        None => HttpResponse::NotFound().body("404 Not Found"),
    }
}

#[get("/assets/{_:.*}")]
pub async fn static_files(path: web::Path<String>) -> impl Responder {
    handle_assets(&path)
}

#[derive(RustEmbed)]
#[folder = "static/favicons/"]
struct Favicons;

fn handle_favicons(path: &str) -> HttpResponse {
    match Favicons::get(path) {
        Some(content) => {
            let body: Body = match content {
                Cow::Borrowed(bytes) => bytes.into(),
                Cow::Owned(bytes) => bytes.into(),
            };

            HttpResponse::Ok()
                .insert_header(header::CacheControl(vec![
                    header::CacheDirective::Public,
                    header::CacheDirective::Extension("immutable".into(), None),
                    header::CacheDirective::MaxAge(CACHE_AGE),
                ]))
                .content_type(from_path(path).first_or_octet_stream().as_ref())
                .body(body)
        }
        None => HttpResponse::NotFound().body("404 Not Found"),
    }
}

#[get("/{file}")]
pub async fn favicons(path: web::Path<String>) -> impl Responder {
    debug!("searching favicons");
    handle_favicons(&path)
}

#[cfg(test)]
mod tests {
    use actix_web::http::StatusCode;
    use actix_web::test;

    use super::*;
    use crate::*;

    #[actix_rt::test]
    async fn static_assets_work() {
        let app = get_app!().await;

        let resp = test::call_service(
            &app,
            test::TestRequest::get().uri(*crate::JS).to_request(),
        )
        .await;
        assert_eq!(resp.status(), StatusCode::OK);

        let resp = test::call_service(
            &app,
            test::TestRequest::get()
                .uri(*crate::VERIFICATIN_WIDGET_JS)
                .to_request(),
        )
        .await;
        assert_eq!(resp.status(), StatusCode::OK);

        let resp = test::call_service(
            &app,
            test::TestRequest::get()
                .uri(*crate::VERIFICATIN_WIDGET_CSS)
                .to_request(),
        )
        .await;
        assert_eq!(resp.status(), StatusCode::OK);

        let resp = test::call_service(
            &app,
            test::TestRequest::get()
                .uri(
                    crate::FILES
                        .get("./static/cache/img/icon-trans.png")
                        .unwrap(),
                )
                .to_request(),
        )
        .await;
        assert_eq!(resp.status(), StatusCode::OK);
    }

    #[actix_rt::test]
    async fn favicons_work() {
        assert!(Favicons::get("favicon.ico").is_some());

        //let app = test::init_service(App::new().configure(services)).await;
        let app = get_app!().await;

        let resp = test::call_service(
            &app,
            test::TestRequest::get().uri("/favicon.ico").to_request(),
        )
        .await;
        assert_eq!(resp.status(), StatusCode::OK);
    }
}