Better error pages and clean up dangling tags

README.md

@@ -13,21 +13,15 @@ Still very much an early WIP.
 - Post pools.
 - RSS feeds.
 
-### Known issues
+### Possible roadmap
 
-- No way to close tag autocompletion on mobile.
-
-### Roadmap
-
-- [ ] Logging and improved error handling
-- [ ] Lossless compression
-- [ ] Post selection
 - [ ] Caching
 - [ ] Text media
 - [ ] Improve CSS
-- [ ] Background tasks for garbage collection (dangling tags)
 - [ ] User management
+- [ ] Display thumbnails on post selection
 - [ ] Testing
+- [ ] Lossless compression
 - [ ] Migrate to Cot...?
 
 ## Running

src/auth.rs

@@ -221,3 +221,9 @@ impl ExpiredDeletion for SessionStorage {
         Ok(())
     }
 }
+
+impl From<axum_login::Error<Backend>> for SameyError {
+    fn from(value: axum_login::Error<Backend>) -> Self {
+        value.into()
+    }
+}

src/error.rs

@@ -4,10 +4,28 @@ use axum::{
     response::{Html, IntoResponse, Response},
 };
 
+#[derive(askama::Template)]
+#[template(path = "pages/bad_request.html")]
+struct BadRequestTemplate<'a> {
+    error: &'a str,
+}
+
+#[derive(askama::Template)]
+#[template(path = "pages/unauthorized.html")]
+struct UnauthorizedTemplate;
+
+#[derive(askama::Template)]
+#[template(path = "pages/forbidden.html")]
+struct ForbiddenTemplate;
+
 #[derive(askama::Template)]
 #[template(path = "pages/not_found.html")]
 struct NotFoundTemplate;
 
+#[derive(askama::Template)]
+#[template(path = "pages/internal_server_error.html")]
+struct InternalServerErrorTemplate;
+
 /// Errors from Samey.
 #[derive(Debug, thiserror::Error)]
 pub enum SameyError {
@@ -54,7 +72,6 @@ pub enum SameyError {
 
 impl IntoResponse for SameyError {
     fn into_response(self) -> Response {
-        println!("Server error - {}", &self);
         match &self {
             SameyError::IntConversion(_)
             | SameyError::IntParse(_)
@@ -64,11 +81,37 @@ impl IntoResponse for SameyError {
             | SameyError::Database(_)
             | SameyError::Image(_)
             | SameyError::Other(_) => {
-                (StatusCode::INTERNAL_SERVER_ERROR, "Something went wrong!").into_response()
-            }
-            SameyError::Multipart(_) | SameyError::BadRequest(_) => {
-                (StatusCode::BAD_REQUEST, "Invalid request").into_response()
+                println!("Internal server error - {:?}", &self);
+                (
+                    StatusCode::INTERNAL_SERVER_ERROR,
+                    Html(
+                        InternalServerErrorTemplate {}
+                            .render()
+                            .expect("shouldn't fail to render InternalServerErrorTemplate"),
+                    ),
+                )
+                    .into_response()
             }
+            SameyError::Multipart(error) => (
+                StatusCode::BAD_REQUEST,
+                Html(
+                    BadRequestTemplate {
+                        error: &error.body_text(),
+                    }
+                    .render()
+                    .expect("shouldn't fail to render BadRequestTemplate"),
+                ),
+            )
+                .into_response(),
+            SameyError::BadRequest(error) => (
+                StatusCode::BAD_REQUEST,
+                Html(
+                    BadRequestTemplate { error }
+                        .render()
+                        .expect("shouldn't fail to render BadRequestTemplate"),
+                ),
+            )
+                .into_response(),
             SameyError::NotFound => (
                 StatusCode::NOT_FOUND,
                 Html(
@@ -78,10 +121,24 @@ impl IntoResponse for SameyError {
                 ),
             )
                 .into_response(),
-            SameyError::Authentication(_) => {
-                (StatusCode::UNAUTHORIZED, "Not authorized").into_response()
-            }
-            SameyError::Forbidden => (StatusCode::FORBIDDEN, "Forbidden").into_response(),
+            SameyError::Authentication(_) => (
+                StatusCode::UNAUTHORIZED,
+                Html(
+                    UnauthorizedTemplate {}
+                        .render()
+                        .expect("shouldn't fail to render UnauthorizedTemplate"),
+                ),
+            )
+                .into_response(),
+            SameyError::Forbidden => (
+                StatusCode::FORBIDDEN,
+                Html(
+                    ForbiddenTemplate {}
+                        .render()
+                        .expect("shouldn't fail to render ForbiddenTemplate"),
+                ),
+            )
+                .into_response(),
         }
     }
 }

src/query.rs

@@ -3,9 +3,9 @@ use std::collections::HashSet;
 use chrono::NaiveDateTime;
 use samey_migration::{Expr, Query};
 use sea_orm::{
-    ColumnTrait, Condition, DatabaseConnection, EntityTrait, FromQueryResult, IntoSimpleExpr,
-    QueryFilter, QueryOrder, QuerySelect, RelationTrait, Select, SelectColumns, SelectModel,
-    Selector,
+    ColumnTrait, Condition, DatabaseConnection, EntityTrait, FromQueryResult, IntoIdentity,
+    IntoSimpleExpr, QueryFilter, QueryOrder, QuerySelect, RelationTrait, Select, SelectColumns,
+    SelectModel, Selector,
 };
 
 use crate::{
@@ -276,3 +276,18 @@ pub(crate) fn filter_posts_by_user(
         ),
     }
 }
+
+pub(crate) async fn clean_dangling_tags(db: &DatabaseConnection) -> Result<(), SameyError> {
+    let dangling_tags = SameyTag::find()
+        .select_column_as(samey_tag_post::Column::Id.count(), "count")
+        .left_join(SameyTagPost)
+        .group_by(samey_tag::Column::Id)
+        .having(Expr::column("count".into_identity()).eq(0))
+        .all(db)
+        .await?;
+    SameyTag::delete_many()
+        .filter(samey_tag::Column::Id.is_in(dangling_tags.into_iter().map(|tag| tag.id)))
+        .exec(db)
+        .await?;
+    Ok(())
+}

src/views.rs

@@ -40,8 +40,8 @@ use crate::{
     },
     error::SameyError,
     query::{
-        PoolPost, PostOverview, PostPoolData, filter_posts_by_user, get_pool_data_for_post,
-        get_posts_in_pool, get_tags_for_post, search_posts,
+        PoolPost, PostOverview, PostPoolData, clean_dangling_tags, filter_posts_by_user,
+        get_pool_data_for_post, get_posts_in_pool, get_tags_for_post, search_posts,
     },
     video::{generate_thumbnail, get_dimensions_for_video},
 };
@@ -183,24 +183,17 @@ pub(crate) async fn login(
     mut auth_session: AuthSession,
     Form(credentials): Form<Credentials>,
 ) -> Result<impl IntoResponse, SameyError> {
-    let user = match auth_session.authenticate(credentials).await {
-        Ok(Some(user)) => user,
-        Ok(None) => return Err(SameyError::Authentication("Invalid credentials".into())),
-        Err(_) => return Err(SameyError::Other("Auth session error".into())),
+    let user = match auth_session.authenticate(credentials).await? {
+        Some(user) => user,
+        None => return Err(SameyError::Authentication("Invalid credentials".into())),
     };
 
-    auth_session
-        .login(&user)
-        .await
-        .map_err(|_| SameyError::Other("Login failed".into()))?;
+    auth_session.login(&user).await?;
     Ok(Redirect::to("/"))
 }
 
 pub(crate) async fn logout(mut auth_session: AuthSession) -> Result<impl IntoResponse, SameyError> {
-    auth_session
-        .logout()
-        .await
-        .map_err(|_| SameyError::Other("Logout error".into()))?;
+    auth_session.logout().await?;
     Ok(Redirect::to("/"))
 }
 
@@ -260,10 +253,9 @@ impl FromStr for Format {
             "application/x-matroska" | "video/mastroska" => Ok(Self::Video(".mkv")),
             "video/quicktime" => Ok(Self::Video(".mov")),
             _ => Ok(Self::Image(
-                ImageFormat::from_mime_type(content_type).ok_or(SameyError::Other(format!(
-                    "Unknown content type: {}",
-                    content_type
-                )))?,
+                ImageFormat::from_mime_type(content_type).ok_or(SameyError::BadRequest(
+                    format!("Unknown content type: {}", content_type),
+                ))?,
             )),
         }
     }
@@ -334,7 +326,7 @@ pub(crate) async fn upload(
             "media-file" => {
                 let content_type = field
                     .content_type()
-                    .ok_or(SameyError::Other("Missing content type".into()))?;
+                    .ok_or(SameyError::BadRequest("Missing content type".into()))?;
                 match Format::from_str(content_type)? {
                     format @ Format::Video(video_format) => {
                         media_type = Some(format.media_type());
@@ -502,7 +494,9 @@ pub(crate) async fn upload(
 
         Ok(Redirect::to(&format!("/post/{}", uploaded_post)))
     } else {
-        Err(SameyError::Other("Missing parameters for upload".into()))
+        Err(SameyError::BadRequest(
+            "Missing parameters for upload".into(),
+        ))
     }
 }
 
@@ -1376,25 +1370,24 @@ pub(crate) async fn update_settings(
 
     let mut configs = vec![];
 
-    if !body.application_name.is_empty() {
+    let application_name = body.application_name.trim();
+    if !application_name.is_empty() {
         let _ = mem::replace(
             &mut app_config.write().await.application_name,
-            body.application_name.clone(),
+            application_name.into(),
         );
         configs.push(samey_config::ActiveModel {
             key: Set(APPLICATION_NAME_KEY.into()),
-            data: Set(body.application_name.into()),
+            data: Set(application_name.into()),
             ..Default::default()
         });
     }
 
-    let _ = mem::replace(
-        &mut app_config.write().await.base_url,
-        body.base_url.clone(),
-    );
+    let base_url = body.base_url.trim_end_matches('/');
+    let _ = mem::replace(&mut app_config.write().await.base_url, base_url.into());
     configs.push(samey_config::ActiveModel {
         key: Set(BASE_URL_KEY.into()),
-        data: Set(body.base_url.into()),
+        data: Set(base_url.into()),
         ..Default::default()
     });
 
@@ -1772,6 +1765,12 @@ pub(crate) async fn submit_post_details(
         .all(&db)
         .await?;
 
+    tokio::spawn(async move {
+        if let Err(err) = clean_dangling_tags(&db).await {
+            println!("Error when cleaning dangling tags - {}", err);
+        }
+    });
+
     Ok(Html(
         SubmitPostDetailsTemplate {
             post,
@@ -1887,6 +1886,9 @@ pub(crate) async fn delete_post(
     tokio::spawn(async move {
         let _ = std::fs::remove_file(files_dir.join(post.media));
         let _ = std::fs::remove_file(files_dir.join(post.thumbnail));
+        if let Err(err) = clean_dangling_tags(&db).await {
+            println!("Error when cleaning dangling tags - {}", err);
+        }
     });
 
     Ok(Redirect::to("/"))

templates/fragments/search_tags.html

@@ -1,4 +1,10 @@
-{% for tag in tags %}
+{% if !tags.is_empty() %}
+<li>
+  <button hx-delete="/remove" hx-target="closest ul" hx-swap="innerHTML">
+    (close)
+  </button>
+</li>
+{% endif %}{% for tag in tags %}
 <li>
   <button
     hx-post="/select_tag"

templates/pages/bad_request.html

@@ -0,0 +1,14 @@
+<!DOCTYPE html>
+<html lang="en">
+  <head>
+    <title>Bad request</title>
+    {% include "fragments/common_headers.html" %}
+  </head>
+  <body>
+    <div><a href="/">&lt; To home</a></div>
+    <main>
+      <h1>Bad request</h1>
+      <p>The provided parameters are invalid: {{ error }}</p>
+    </main>
+  </body>
+</html>

templates/pages/forbidden.html

@@ -0,0 +1,14 @@
+<!DOCTYPE html>
+<html lang="en">
+  <head>
+    <title>Forbidden</title>
+    {% include "fragments/common_headers.html" %}
+  </head>
+  <body>
+    <div><a href="/">&lt; To home</a></div>
+    <main>
+      <h1>Forbidden</h1>
+      <p>The requested action is not allowed.</p>
+    </main>
+  </body>
+</html>

templates/pages/internal_server_error.html

@@ -0,0 +1,17 @@
+<!DOCTYPE html>
+<html lang="en">
+  <head>
+    <title>Internal server error</title>
+    {% include "fragments/common_headers.html" %}
+  </head>
+  <body>
+    <div><a href="/">&lt; To home</a></div>
+    <main>
+      <h1>Internal server error</h1>
+      <p>
+        Something went wrong! Ask your administrator to check the application
+        logs.
+      </p>
+    </main>
+  </body>
+</html>

templates/pages/unauthorized.html

@@ -0,0 +1,14 @@
+<!DOCTYPE html>
+<html lang="en">
+  <head>
+    <title>Unauthorized</title>
+    {% include "fragments/common_headers.html" %}
+  </head>
+  <body>
+    <div><a href="/">&lt; To home</a></div>
+    <main>
+      <h1>Unauthorized</h1>
+      <p>The provided credentials are invalid.</p>
+    </main>
+  </body>
+</html>