Basic unsubscribe endpoint

src/routes.rs

@@ -5,6 +5,7 @@ mod login;
 mod posts;
 mod subscriptions;
 mod subscriptions_confirm;
+mod unsubscribe;
 
 pub use admin::*;
 use askama::Template;
@@ -16,15 +17,38 @@ pub use health_check::*;
 pub use home::*;
 pub use login::*;
 pub use posts::*;
+use rand::{Rng, distr::Alphanumeric};
 use reqwest::StatusCode;
 pub use subscriptions::*;
 pub use subscriptions_confirm::*;
+pub use unsubscribe::*;
 
 use crate::{
     authentication::AuthError,
     templates::{InternalErrorTemplate, MessageTemplate, NotFoundTemplate},
 };
 
+pub fn generate_token() -> String {
+    let mut rng = rand::rng();
+    std::iter::repeat_with(|| rng.sample(Alphanumeric))
+        .map(char::from)
+        .take(25)
+        .collect()
+}
+
+fn error_chain_fmt(e: &impl std::error::Error, f: &mut std::fmt::Formatter) -> std::fmt::Result {
+    writeln!(f, "{}", e)?;
+    let mut current = e.source();
+    while let Some(cause) = current {
+        write!(f, "Caused by:\n\t{}", cause)?;
+        current = cause.source();
+        if current.is_some() {
+            writeln!(f)?;
+        }
+    }
+    Ok(())
+}
+
 #[derive(thiserror::Error)]
 pub enum AppError {
     #[error("An unexpected error was encountered.")]