feat: add location and description fields to reminders

bin/remind.ml

@@ -32,6 +32,8 @@ type rem = {
   source : string;  (** Source file or identifier for the reminder *)
   original_uuid : string;  (** Original UID from the iCalendar event *)
   summary : string;  (** Summary or title of the reminder *)
+  location : string option;  (** Optional location of the event *)
+  description : string option;  (** Optional description of the event *)
   date : Timedesc.Date.t;  (** Date specification (day, month, year) *)
   end_date : Timedesc.Date.t option;  (** Optional end date for a date range *)
   time : Timedesc.Time.t option;  (** Optional time specification (hour, minute) *)
@@ -54,6 +56,8 @@ let empty =
     source = "";
     original_uuid = "";
     summary = "";
+    location = None;
+    description = None;
     date = Timedesc.Date.Ymd.make_exn ~year:1970 ~month:1 ~day:1;
     end_date = None;
     time = None;
@@ -71,8 +75,8 @@ let empty =
 (* ── buffer primitives ────────────────────────────────────────── *)
 
 let add_rem b = Buffer.add_string b "REM "
-let add_info b uuid = Buffer.add_string b (spf "INFO \"UID: %s\" " uuid)
-let add_source b source = Buffer.add_string b (spf "INFO \"Calendar: %s\" " (String.uppercase_ascii source))
+let add_uid b uuid = Buffer.add_string b (spf "\\\n    INFO \"UID: %s\" " uuid)
+let add_source b source = Buffer.add_string b (spf "\\\n    INFO \"Calendar: %s\" " (String.uppercase_ascii source))
 let add_date b date = Buffer.add_string b (Timedesc.Date.to_rfc3339 date)
 let add_weekday b wd = Buffer.add_string b (spf "%s " (string_of_weekday wd))
 
@@ -164,6 +168,9 @@ let escape_msg s =
   let buf = Buffer.create (String.length s) in
   String.iter
     (function
+      | '\n' -> Buffer.add_string buf "\\n"
+      | '\t' -> ()
+      | '"' -> Buffer.add_string buf "\\\""
       | '%' -> Buffer.add_string buf "%%"
       | '[' -> Buffer.add_string buf {|["["]|}
       | c -> Buffer.add_char buf c)
@@ -172,6 +179,21 @@ let escape_msg s =
 
 let add_msg b summary = Buffer.add_string b (spf " MSG %s\n" (escape_msg summary))
 
+let add_location b loc =
+  match loc with
+  | Some loc -> begin
+      let loc = String.trim loc in
+      Buffer.add_string b (spf "\\\n    INFO \"Location: %s\" " (escape_msg loc))
+    end
+  | None -> ()
+
+let add_description b desc =
+  match desc with
+  | Some desc ->
+      let desc = String.trim desc in
+      Buffer.add_string b (spf "\\\n    INFO \"Description: %s\" " (escape_msg desc))
+  | None -> ()
+
 let date_of_date_or_datetime (d : Icalendar.date_or_datetime) : Timedesc.Date.t =
   match d with
   | `Date (year, month, day) -> Timedesc.Date.Ymd.make_exn ~year ~month ~day
@@ -199,8 +221,10 @@ let render_daily rem (d : simple_daily) =
   let b = Buffer.create 256 in
   add_omit_context b rem.exdate;
   add_rem b;
-  add_info b rem.original_uuid;
+  add_uid b rem.original_uuid;
   add_source b rem.source;
+  add_location b rem.location;
+  add_description b rem.description;
   add_date b rem.date;
   Buffer.add_char b ' ';
   add_interval_daily b d;
@@ -218,8 +242,10 @@ let render_weekly rem (w : simple_weekly) =
   List.iter
     (fun wd ->
       add_rem b;
-      add_info b rem.original_uuid;
+      add_uid b rem.original_uuid;
       add_source b rem.source;
+      add_location b rem.location;
+      add_description b rem.description;
       add_weekday b wd;
       add_date b rem.date;
       Buffer.add_char b ' ';
@@ -237,8 +263,10 @@ let render_monthly rem (m : simple_monthly) =
   let b = Buffer.create 256 in
   add_omit_context b rem.exdate;
   add_rem b;
-  add_info b rem.original_uuid;
+  add_uid b rem.original_uuid;
   add_source b rem.source;
+  add_location b rem.location;
+  add_description b rem.description;
   (match m.pattern with
   | By_month_day day -> Buffer.add_string b (spf "%d " day)
   | By_nth_weekday (n, wd) when n > 0 ->
@@ -261,8 +289,10 @@ let render_monthly rem (m : simple_monthly) =
 let render_single rem =
   let b = Buffer.create 256 in
   add_rem b;
-  add_info b rem.original_uuid;
+  add_uid b rem.original_uuid;
   add_source b rem.source;
+  add_location b rem.location;
+  add_description b rem.description;
   add_date b rem.date;
   add_at b rem.time;
   add_duration b rem.duration;
@@ -273,8 +303,10 @@ let render_single rem =
 let render_yearly rem month day =
   let b = Buffer.create 64 in
   add_rem b;
-  add_info b rem.original_uuid;
+  add_uid b rem.original_uuid;
   add_source b rem.source;
+  add_location b rem.location;
+  add_description b rem.description;
   Buffer.add_string b (spf "%s %d" (month_of_int month |> string_of_month) day);
   add_msg b rem.summary;
   Buffer.contents b