init

1 files changed, 33 insertions, 0 deletions

diff --git a/lib/pages.ml b/lib/pages.ml
new file mode 100644
index 0000000..e52332f
--- /dev/null
+++ b/lib/pages.ml
@@ -0,0 +1,33 @@
+open Piaf
+
+type pool = ((module Rapper_helper.CONNECTION), Caqti_error.t) Caqti_eio.Pool.t
+
+(* This is the main handler function for the GET /posts endpoint. *)
+(* It takes a database connection pool and a Piaf request as input. *)
+let get_root (db_pool : pool) (request : Request.t) =
+  let _coki = Piaf.Cookies.Cookie.parse request.headers in
+  (* Use a connection from the pool. Caqti_eio.Pool.use handles acquiring and releasing the connection. *)
+  Caqti_eio.Pool.use
+    (fun conn ->
+      (* Call the get_poasts function from the Query module to fetch posts from the database. *)
+      let posts_or_error = Query.get_poasts () conn in
+      (* Pattern match on the result of the database query. *)
+      match posts_or_error with
+      (* If the query is successful, the result is a list of posts. *)
+      | Ok posts ->
+        (* Map the list of post tuples to a Yojson list. *)
+        let json =
+          `List
+            ((* For each post tuple, create a JSON object. *)
+             List.map
+               (fun (post : Query.post_summary) -> `Assoc [ "title", `String post.title ])
+               posts)
+        in
+        (* Return a 200 OK response with the JSON body. *)
+        Ok (Response.of_string ~body:(Yojson.Safe.to_string json) `OK)
+      (* If the query fails, log the error and return a 500 Internal Server Error response. *)
+      | Error err ->
+        Logs.err (fun m -> m "Database error: %a" Caqti_error.pp err);
+        Ok (Response.create `Internal_server_error))
+    db_pool
+;;