add a json api.

i added a json api called /name which lets you get the previous and next
site name. i also modified the internal url functions to return a None
value if overflow is turned off and next or previous is nothing.

Cargo.lock

@@ -873,6 +873,7 @@ dependencies = [
  "rocket_codegen",
  "rocket_http",
  "serde",
+ "serde_json",
  "state",
  "tempfile",
  "time",

Cargo.toml

@@ -6,4 +6,4 @@ edition = "2021"
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
-rocket = "=0.5.0-rc.3"
+rocket = { version = "=0.5.0-rc.3", features = ["json"] }

src/main.rs

@@ -1,34 +1,74 @@
 #[macro_use]
 extern crate rocket;
 use rocket::response::Redirect;
+use rocket::serde::{json::Json, Serialize};
 
-static NAMES: [&str; 2] = ["mossfet.xyz", "fries.gay"];
+static NAMES: [&str; 3] = ["mossfet.xyz", "fries.gay", "ta-kev.digital"];
+
+#[derive(Serialize)]
+#[serde(crate = "rocket::serde")]
+struct JsonResponse {
+	previous_site_name: Option<String>,
+	next_site_name: Option<String>,
+}
 
 #[get("/")]
 fn index() -> &'static str {
 	"Like, this is a webring, meow!"
 }
 
-#[get("/next?<source_url>")]
-fn next(source_url: &str) -> Redirect {
-	// this is gay
+fn previous_url(source_url: &String, overflow: bool) -> Option<String> {
 	match NAMES.iter().position(|&r| r == source_url) {
-		Some(index) if index == NAMES.len() - 1 => Redirect::to(format!("https://{}", NAMES[0])),
-		Some(index) => Redirect::to(format!("https://{}", NAMES[index + 1])),
-		None => Redirect::to(uri!("/404.html")),
-	}
-}
-
-#[get("/prev?<source_url>")]
-fn prev(source_url: &str) -> Redirect {
-	match NAMES.iter().position(|&r| r == source_url) {
-		Some(index) if index == 0 => Redirect::to(format!("https://{}", NAMES[NAMES.len() - 1])),
-		Some(index) => Redirect::to(format!("https://{}", NAMES[index - 1])),
+		Some(index) if index == 0 => {
+			if !overflow {
+				return None;
+			}
+			Some(NAMES[NAMES.len() - 1].to_string())
+		},
+		Some(index) => Some(NAMES[index - 1].to_string()),
 		None => todo!(),
 	}
 }
 
+fn next_url(source_url: &String, overflow: bool) -> Option<String> {
+	// this is gay
+	match NAMES.iter().position(|&r| r == source_url) {
+		Some(index) if index == NAMES.len() - 1 => {
+			if !overflow {
+				return None;
+			}
+			Some(NAMES[0].to_string())
+		}
+		Some(index) => Some(NAMES[index + 1].to_string()),
+		None => todo!(),
+	}
+}
+
+#[get("/previous?<source_url>")]
+fn previous(source_url: String) -> Redirect {
+	match previous_url(&source_url, true) {
+		Some(url) => Redirect::to(format!("https://{}", url)),
+		None => todo!(),
+	}
+}
+
+#[get("/next?<source_url>")]
+fn next(source_url: String) -> Redirect {
+	match next_url(&source_url, true) {
+		Some(url) => Redirect::to(format!("https://{}", url)),
+		None => todo!(),
+	}
+}
+
+#[get("/name?<source_url>")]
+fn name(source_url: String) -> Json<JsonResponse> {
+	Json(JsonResponse {
+		previous_site_name: previous_url(&source_url, false),
+		next_site_name: next_url(&source_url, false),
+	})
+}
+
 #[launch]
 fn rocket() -> _ {
-	rocket::build().mount("/", routes![index, next, prev])
+	rocket::build().mount("/", routes![index, previous, next, name])
 }