From c1c0d3a71d5bf81ac9e6f0169716c9903e54df06 Mon Sep 17 00:00:00 2001
From: marty hiatt <martianhiatus@riseup.net>
Date: Mon, 14 Oct 2024 19:19:38 +0200
Subject: implement rough trending links, and link timeline

---
 lisp/mastodon-search.el | 38 +++++++++++++++++++++++++++++++++++++-
 lisp/mastodon-tl.el     | 13 ++++++++++++-
 2 files changed, 49 insertions(+), 2 deletions(-)

(limited to 'lisp')

diff --git a/lisp/mastodon-search.el b/lisp/mastodon-search.el
index 7fc4de3..90519ed 100644
--- a/lisp/mastodon-search.el
+++ b/lisp/mastodon-search.el
@@ -97,6 +97,41 @@ QUERY is the string to search."
   (mastodon-search--view-trending "statuses"
                                   #'mastodon-tl--timeline))
 
+(defun mastodon-search--trending-links ()
+  "Display a list of links trending on your instance."
+  (interactive)
+  (mastodon-search--view-trending "links"
+                                  #'mastodon-search--render-links))
+
+(defun mastodon-search--render-links (links)
+  "Render trending LINKS."
+  (cl-loop for l in links
+           do (mastodon-search--render-link l)))
+
+(defun mastodon-search--render-link (link)
+  "Render a trending LINK."
+  (let-alist link
+    (insert
+     (propertize
+      (mastodon-tl--render-text
+       (concat "<a href=\"" .url "\">" .url "</a>\n" .title)
+       link)
+      'item-type 'link
+      'item-json link
+      'shr-url .url
+      'byline t ;; nav
+      'help-echo
+      (substitute-command-keys
+       "\\[`mastodon-search--load-link-posts'] to view a link's timeline"))
+     ;; TODO: display card link author here
+     "\n\n")))
+
+(defun mastodon-search--load-link-posts ()
+  "Load timeline of posts containing link at point."
+  (interactive)
+  (let* ((url (mastodon-tl--property 'shr-url)))
+    (mastodon-tl--link-timeline url)))
+
 (defun mastodon-search--view-trending (type print-fun)
   "Display a list of tags trending on your instance.
 TYPE is a string, either tags, statuses, or links.
@@ -109,7 +144,8 @@ PRINT-FUN is the function used to print the data from the response."
          (offset '(("offset" . "0")))
          (params (push limit offset))
          (data (mastodon-http--get-json url params))
-         (buffer (get-buffer-create (format "*mastodon-trending-%s*" type))))
+         (buffer (get-buffer-create
+                  (format "*mastodon-trending-%s*" type))))
     (with-mastodon-buffer buffer #'mastodon-mode nil
       (mastodon-tl--set-buffer-spec (buffer-name buffer)
                                     (format "trends/%s" type)
diff --git a/lisp/mastodon-tl.el b/lisp/mastodon-tl.el
index 81be479..75bde95 100644
--- a/lisp/mastodon-tl.el
+++ b/lisp/mastodon-tl.el
@@ -279,6 +279,7 @@ etc.")
     ;; is already bound to w also
     (define-key map (kbd "u") #'mastodon-tl--update)
     (define-key map [remap shr-browse-url] #'mastodon-url-lookup)
+    (define-key map (kbd "M-RET") #'mastodon-search--load-link-posts)
     map)
   "The keymap to be set for shr.el generated links that are not images.
 We need to override the keymap so tabbing will navigate to all
@@ -575,6 +576,14 @@ With a double PREFIX arg, limit results to your own instance."
      (concat "timelines/tag/" (if (listp tag) (car tag) tag)) ; must be /tag/:sth
      'mastodon-tl--timeline nil params)))
 
+(defun mastodon-tl--link-timeline (url)
+  "Load a link timeline, displaying posts containing URL."
+  (let ((endpoint (mastodon-http--api "timelines/link"))
+        (params `(("url" . ,url))))
+    (mastodon-tl--init "links" "timelines/link"
+                       'mastodon-tl--timeline nil
+                       params)))
+
 
 ;;; BYLINES, etc.
 
@@ -1987,7 +1996,9 @@ call this function after it is set or use something else."
           ((string= "*mastodon-toot-edits*" buffer-name)
            'toot-edits)
           ((string= "*masto-image*" (buffer-name))
-           'mastodon-image))))
+           'mastodon-image)
+          ((mastodon-tl--endpoint-str-= "timelines/link")
+           'link-timeline))))
 
 (defun mastodon-tl--buffer-type-eq (type)
   "Return t if current buffer type is equal to symbol TYPE."
-- 
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