From 88b3ab1674753ec34d9175b526c1ee09501dd646 Mon Sep 17 00:00:00 2001
From: Stefano Pigozzi <me@steffo.eu>
Date: Tue, 1 Aug 2023 23:57:29 +0200
Subject: [PATCH] Kebabify board names in the backend

---
 todored/src/kebab.rs             | 59 ++++++++++++++++++++++++++++++++
 todored/src/main.rs              |  1 +
 todored/src/routes/board/axum.rs |  5 +++
 3 files changed, 65 insertions(+)
 create mode 100644 todored/src/kebab.rs

diff --git a/todored/src/kebab.rs b/todored/src/kebab.rs
new file mode 100644
index 0000000..b006d21
--- /dev/null
+++ b/todored/src/kebab.rs
@@ -0,0 +1,59 @@
+//! Module defining and implementing the [`Skewer`] trait.
+
+use regex::Regex;
+
+
+/// Trait to skewer strings into `UPPER-KEBAB-CASE` or `lower-kebab-case`.
+pub trait Skewer {
+	/// Replace the non-alphanumeric characters of the string with dashes.
+	fn to_kebab_anycase(&self) -> String;
+	/// Lowercase the string, then [kebabify](to_kebab_anycase) it.
+	fn to_kebab_lowercase(&self) -> String;
+	/// Uppercase the string, then [kebabify](to_kebab_anycase) it.
+	fn to_kebab_uppercase(&self) -> String;
+}
+
+impl Skewer for &str {
+	fn to_kebab_anycase(&self) -> String {
+		lazy_static::lazy_static! {
+            static ref INVALID_CHARACTERS_REGEX: Regex = Regex::new(r#"[^A-Za-z0-9-]"#)
+                .expect("INVALID_CHARACTERS_REGEX to be valid");
+        }
+
+		log::trace!("Kebab-ifying: {self:?}");
+		let kebab = INVALID_CHARACTERS_REGEX.replace_all(self, "-").into_owned();
+		log::trace!("Kebab-ification complete: {kebab:?}");
+
+		kebab
+	}
+
+	fn to_kebab_lowercase(&self) -> String {
+		log::trace!("Kebab-i-lower-fying: {self:?}");
+		let kebab = self.to_ascii_lowercase().as_str().to_kebab_anycase();
+		log::trace!("Kebab-i-lower-ification complete: {kebab:?}");
+
+		kebab
+	}
+
+	fn to_kebab_uppercase(&self) -> String {
+		log::trace!("Kebab-i-lower-fying: {self:?}");
+		let kebab = self.to_ascii_uppercase().as_str().to_kebab_anycase();
+		log::trace!("Kebab-i-lower-ification complete: {kebab:?}");
+
+		kebab
+	}
+}
+
+impl Skewer for String {
+	fn to_kebab_anycase(&self) -> String {
+		self.as_str().to_kebab_anycase()
+	}
+
+	fn to_kebab_lowercase(&self) -> String {
+		self.as_str().to_kebab_lowercase()
+	}
+
+	fn to_kebab_uppercase(&self) -> String {
+		self.as_str().to_kebab_uppercase()
+	}
+}
diff --git a/todored/src/main.rs b/todored/src/main.rs
index 5262fcf..2e1bee5 100644
--- a/todored/src/main.rs
+++ b/todored/src/main.rs
@@ -6,6 +6,7 @@ pub mod outcome;
 pub mod task;
 pub(crate) mod config;
 mod routes;
+pub mod kebab;
 
 #[tokio::main]
 async fn main() {
diff --git a/todored/src/routes/board/axum.rs b/todored/src/routes/board/axum.rs
index 52d543e..f155eb7 100644
--- a/todored/src/routes/board/axum.rs
+++ b/todored/src/routes/board/axum.rs
@@ -1,5 +1,6 @@
 use axum::Extension;
 use axum::extract::{Path, WebSocketUpgrade};
+use crate::kebab::Skewer;
 use super::ws;
 
 pub(crate) async fn handler(
@@ -7,6 +8,10 @@ pub(crate) async fn handler(
 	Extension(rclient): Extension<redis::Client>,
 	upgrade_request: WebSocketUpgrade,
 ) -> axum::response::Response {
+	log::trace!("Kebabifying board name...");
+	let board = board.to_kebab_lowercase();
+	log::trace!("Kebabified board name to: {board:?}");
+
 	log::trace!("Received websocket request, upgrading...");
 	upgrade_request.on_upgrade(|websocket| ws::handler(board, rclient, websocket))
 }