Generate URL to restore settings, including subscriptions. Closes #89 (#116)

* Start recursive comments

* Update comment.html

* Fix move error

* Comment improvements

* Fix merge

* Remove extra endif from post.html

* Fix post.html

* Restore setting from link

* Tweak settings page

Co-authored-by: spikecodes <19519553+spikecodes@users.noreply.github.com>

src/settings.rs

@@ -12,6 +12,7 @@ struct SettingsTemplate {
 }
 
 #[derive(serde::Deserialize, Default)]
+#[serde(default)]
 pub struct SettingsForm {
 	theme: Option<String>,
 	front_page: Option<String>,
@@ -19,6 +20,8 @@ pub struct SettingsForm {
 	wide: Option<String>,
 	comment_sort: Option<String>,
 	show_nsfw: Option<String>,
+	redirect: Option<String>,
+	subscriptions: Option<String>,
 }
 
 // FUNCTIONS
@@ -56,3 +59,39 @@ pub async fn set(mut req: Request<()>) -> tide::Result {
 
 	Ok(res)
 }
+
+
+// Set cookies using response "Set-Cookie" header
+pub async fn restore(req: Request<()>) -> tide::Result {
+	let form: SettingsForm = req.query()?;
+	
+
+	let path = match form.redirect {
+		Some(value) => format!("/{}/", value),
+		None => "/".to_string()
+	};
+
+	let mut res = Response::builder(302)
+		.content_type("text/html")
+		.header("Location", path.to_owned())
+		.body(format!("Redirecting to <a href=\"{0}\">{0}</a>...", path))
+		.build();
+
+	let names = vec!["theme", "front_page", "layout", "wide", "comment_sort", "show_nsfw", "subscriptions"];
+	let values = vec![form.theme, form.front_page, form.layout, form.wide, form.comment_sort, form.show_nsfw, form.subscriptions];
+
+	for (i, name) in names.iter().enumerate() {
+		match values.get(i) {
+			Some(value) => res.insert_cookie(
+				Cookie::build(name.to_owned(), value.to_owned().unwrap_or_default())
+					.path("/")
+					.http_only(true)
+					.expires(OffsetDateTime::now_utc() + Duration::weeks(52))
+					.finish(),
+			),
+			None => res.remove_cookie(Cookie::named(name.to_owned())),
+		};
+	}
+
+	Ok(res)
+}