refactor: setup Log package in main

1 files changed, 14 insertions, 1 deletions

diff --git a/2025/ocaml/bin/main.ml b/2025/ocaml/bin/main.ml
index f34d5ef..cbfe6d2 100644
--- a/2025/ocaml/bin/main.ml
+++ b/2025/ocaml/bin/main.ml
@@ -1,3 +1,16 @@
-let main () = Presentation.Cli.run ()
+let env_log_level =
+  match Sys.getenv_opt "LOG_LEVEL" with
+  | None ->
+      Some Logs.Warning
+  | Some lvl -> (
+    match Logs.level_of_string lvl with Error _ -> None | Ok v -> v )
+
+let main () =
+  let log_level = env_log_level in
+  Logs.set_level log_level ;
+  Logs.set_reporter (Logs_fmt.reporter ()) ;
+  Logs.info (fun m ->
+      m "Started application with LOG_LEVEL=%s" (Logs.level_to_string log_level) ) ;
+  Presentation.Cli.run ()
 
 let () = if !Sys.interactive then () else exit (main ())