From f192457e19486cdfbc8ac62684d33ac4b6c82bc1 Mon Sep 17 00:00:00 2001
From: Marc Coquand <marcc@fastmail.fr>
Date: Sun, 3 Dec 2023 12:51:56 -0600
Subject: Add post and more

---
 lib/post.ml | 33 +++++++++++++++++++++++++++++++++
 lib/xml.ml  | 54 ++++++++++++++++++++++++++++++++++++++++++++++--------
 lib/xml.mli | 13 -------------
 3 files changed, 79 insertions(+), 21 deletions(-)
 delete mode 100644 lib/xml.mli

(limited to 'lib')

diff --git a/lib/post.ml b/lib/post.ml
index 744e296..5c3d494 100644
--- a/lib/post.ml
+++ b/lib/post.ml
@@ -6,8 +6,41 @@ type t = {
   tags : string list;
   published : string;
   author : string;
+  author_link : string;
 }
 
+let published t = t.published
+
+(* RSS *)
+
+let to_rss_entry post =
+  Xml.tag "entry" []
+    [
+      Xml.tag "title" [] [ Xml.entry (post.author ^ " - " ^ post.link) ];
+      Xml.tag "id" [] [ Xml.entry post.link ];
+      Xml.tag "updated" [] [ Xml.entry post.published ];
+      Xml.tag "summary"
+        [ ("xml:lang", "\"en\""); ("type", "\"html\"") ]
+        [ Xml.entry post.summary ];
+    ]
+
+(* DB *)
+
+let db = ref []
+
+let add (entry : t) =
+  db := entry :: !db;
+  print_endline (entry.link ^ " added to db");
+  print_endline ("New db size: " ^ string_of_int (List.length !db))
+
+let get_all () =
+  print_endline ("db size: " ^ string_of_int (List.length !db));
+  !db
+
+let latest_post () = match !db with [] -> None | x :: _ -> Some x
+
+(* Mastodon integration *)
+
 type mastodon_tag = {
   kind : string; [@key "type"]
   name : string;
diff --git a/lib/xml.ml b/lib/xml.ml
index fe4abdc..d5f8df3 100644
--- a/lib/xml.ml
+++ b/lib/xml.ml
@@ -1,10 +1,48 @@
-type xml = Tag of string * xml list | String of string
+type attribute = string * string
 
-let tag name body = Tag (name, body)
-let format, format_list = Format.(fprintf, pp_print_list)
+type xml =
+  | Tag of string * attribute list * xml list
+  | String of string
+  | Closing_tag of string * attribute list
 
-let rec format_xml f = function
-  | Tag (name, body) ->
-      let format_body = format_list format_xml in
-      format f "@[<hv 3><%s>@,%a@;<0 -3></%s>@]" name format_body body name
-  | String text -> format f "%s" text
+let tag name attributes body = Tag (name, attributes, body)
+let entry value = String value
+let closing_tag name attributes = Closing_tag (name, attributes)
+
+let format_attributes attributes =
+  let format_attribut (name, value) = Printf.sprintf " %s=\"%s\"" name value in
+  String.concat "" (List.map format_attribut attributes)
+
+let rec format = function
+  | Tag (name, attributes, body) ->
+      let body = List.map format body in
+      String.concat ""
+        [
+          "<";
+          name;
+          " ";
+          format_attributes attributes;
+          ">";
+          String.concat "" body;
+          "</";
+          name;
+          ">";
+        ]
+  | String text -> text
+  | Closing_tag (name, attributes) ->
+      String.concat "" [ "<"; name; " "; format_attributes attributes; "/>" ]
+
+let format_rss host_name last_updated entries =
+  tag "feed"
+    [ ("xml:base", host_name) ]
+    [
+      tag "title" [] [ entry "Sensemaking Galaxy" ];
+      tag "subtitle" [] [ entry "A collection of sensemaking links" ];
+      closing_tag "link" [ ("href", host_name ^ "/feed.xml"); ("rel", "self") ];
+      closing_tag "link" [ ("href", host_name) ];
+      tag "id" [] [ entry host_name ];
+      tag "updated" [] [ entry last_updated ];
+      tag "author" [] [ tag "name" [] [ entry "Sensemaking Galaxy" ] ];
+      tag "entry" [] entries;
+    ]
+  |> format
diff --git a/lib/xml.mli b/lib/xml.mli
deleted file mode 100644
index e1d3eb9..0000000
--- a/lib/xml.mli
+++ /dev/null
@@ -1,13 +0,0 @@
-type xml = Tag of string * xml list | String of string
-
-val tag : string -> xml list -> xml
-val format : Format.formatter -> ('a, Format.formatter, unit) format -> 'a
-
-val format_list :
-  ?pp_sep:(Format.formatter -> unit -> unit) ->
-  (Format.formatter -> 'a -> unit) ->
-  Format.formatter ->
-  'a list ->
-  unit
-
-val format_xml : Format.formatter -> xml -> unit
-- 
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