add: taken slug check

src/routes.rs

@@ -34,6 +34,7 @@ pub fn routes() -> Router {
         .route("/api/v1/render", post(render_request))
         .route("/api/v1/entries", post(create_request))
         .route("/api/v1/entries/{slug}", post(edit_request))
+        .route("/api/v1/entries/{slug}", get(exists_request))
 }
 
 fn default_context(data: &DataClient, build_code: &str) -> Context {
@@ -178,6 +179,25 @@ async fn render_request(Json(req): Json<RenderMarkdown>) -> impl IntoResponse {
     crate::markdown::render_markdown(&req.content)
 }
 
+async fn exists_request(
+    Extension(data): Extension<State>,
+    Path(slug): Path<String>,
+) -> impl IntoResponse {
+    let (ref data, _, _) = *data.read().await;
+
+    Json(ApiReturn {
+        ok: true,
+        message: "Success".to_string(),
+        payload: data
+            .query(&SimplifiedQuery {
+                query: AppDataSelectQuery::KeyIs(format!("entries('{}')", slug)),
+                mode: AppDataSelectMode::One(0),
+            })
+            .await
+            .is_ok(),
+    })
+}
+
 #[derive(Deserialize)]
 struct CreateEntry {
     content: String,
@@ -206,6 +226,14 @@ async fn create_request(
         return Json(Error::DataTooLong("slug".to_string()).into());
     }
 
+    if req.content.len() < 2 {
+        return Json(Error::DataTooShort("content".to_string()).into());
+    }
+
+    if req.content.len() > 150_000 {
+        return Json(Error::DataTooLong("content".to_string()).into());
+    }
+
     // check for existing
     if data
         .query(&SimplifiedQuery {
@@ -274,6 +302,16 @@ async fn edit_request(
 ) -> impl IntoResponse {
     let (ref data, _, _) = *data.read().await;
 
+    // check content length
+    if req.content.len() < 2 {
+        return Json(Error::DataTooShort("content".to_string()).into());
+    }
+
+    if req.content.len() > 150_000 {
+        return Json(Error::DataTooLong("content".to_string()).into());
+    }
+
+    // ...
     let (id, mut entry) = match data
         .query(&SimplifiedQuery {
             query: AppDataSelectQuery::KeyIs(format!("entries('{}')", slug)),