Handlers are _named operations_, which can be exposed via routes.

Each domain module that exposes handlers does so through a `handlers` child module, ideally as a top-level symbol that can be plugged directly into Axum's `MethodRouter`. Modules could make exceptions to this - kill the doctrinaire inside yourself, after all - but none of the API modules that actually exist need such exceptions, and consistency is useful.

The related details of request types, URL types, response types, errors, &c &c are then organized into modules under `handlers`, along with their respective tests.

1 files changed, 55 insertions, 0 deletions

diff --git a/src/message/handlers/delete/mod.rs b/src/message/handlers/delete/mod.rs
new file mode 100644
index 0000000..5eac4eb
--- /dev/null
+++ b/src/message/handlers/delete/mod.rs
@@ -0,0 +1,55 @@
+use axum::{
+    extract::{Json, Path, State},
+    http::StatusCode,
+    response::{self, IntoResponse},
+};
+
+use crate::{
+    app::App,
+    clock::RequestedAt,
+    error::{Internal, NotFound},
+    message::{self, app::DeleteError},
+    token::extract::Identity,
+};
+
+#[cfg(test)]
+mod test;
+
+pub async fn handler(
+    State(app): State<App>,
+    Path(message): Path<message::Id>,
+    RequestedAt(deleted_at): RequestedAt,
+    identity: Identity,
+) -> Result<Response, Error> {
+    app.messages()
+        .delete(&identity.user, &message, &deleted_at)
+        .await?;
+
+    Ok(Response { id: message })
+}
+
+#[derive(Debug, serde::Serialize)]
+pub struct Response {
+    pub id: message::Id,
+}
+
+impl IntoResponse for Response {
+    fn into_response(self) -> response::Response {
+        (StatusCode::ACCEPTED, Json(self)).into_response()
+    }
+}
+
+#[derive(Debug, thiserror::Error)]
+#[error(transparent)]
+pub struct Error(#[from] pub DeleteError);
+
+impl IntoResponse for Error {
+    fn into_response(self) -> response::Response {
+        let Self(error) = self;
+        match error {
+            DeleteError::NotSender(_) => (StatusCode::FORBIDDEN, error.to_string()).into_response(),
+            DeleteError::NotFound(_) | DeleteError::Deleted(_) => NotFound(error).into_response(),
+            DeleteError::Database(_) => Internal::from(error).into_response(),
+        }
+    }
+}