Split the service in multiple crates

crates/core/src/handlers/views/index.rs

@@ -0,0 +1,64 @@
+// Copyright 2021 The Matrix.org Foundation C.I.C.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+use sqlx::PgPool;
+use url::Url;
+use warp::{reply::html, Filter, Rejection, Reply};
+
+use crate::{
+    config::{CookiesConfig, CsrfConfig, OAuth2Config},
+    filters::{
+        cookies::{with_cookie_saver, EncryptedCookieSaver},
+        csrf::updated_csrf_token,
+        session::with_optional_session,
+        with_templates, CsrfToken,
+    },
+    storage::SessionInfo,
+    templates::{IndexContext, TemplateContext, Templates},
+};
+
+pub(super) fn filter(
+    pool: &PgPool,
+    templates: &Templates,
+    oauth2_config: &OAuth2Config,
+    csrf_config: &CsrfConfig,
+    cookies_config: &CookiesConfig,
+) -> impl Filter<Extract = (impl Reply,), Error = Rejection> + Clone + Send + Sync + 'static {
+    let discovery_url = oauth2_config.discovery_url();
+    warp::path::end()
+        .and(warp::get())
+        .map(move || discovery_url.clone())
+        .and(with_templates(templates))
+        .and(with_cookie_saver(cookies_config))
+        .and(updated_csrf_token(cookies_config, csrf_config))
+        .and(with_optional_session(pool, cookies_config))
+        .and_then(get)
+}
+
+async fn get(
+    discovery_url: Url,
+    templates: Templates,
+    cookie_saver: EncryptedCookieSaver,
+    csrf_token: CsrfToken,
+    session: Option<SessionInfo>,
+) -> Result<impl Reply, Rejection> {
+    let ctx = IndexContext::new(discovery_url)
+        .maybe_with_session(session)
+        .with_csrf(&csrf_token);
+
+    let content = templates.render_index(&ctx)?;
+    let reply = html(content);
+    let reply = cookie_saver.save_encrypted(&csrf_token, reply)?;
+    Ok(Box::new(reply))
+}