feat: render recent comments in the bulk issue list

A populated list used to look like nothing had comments, because only a single-issue refresh fetched them. The bulk and Custom View queries now pull each issue's most recent comments and render them under the Comments heading, with a marker showing how many are shown against the total: 💬 5/18, or 💬 5/25+ once the count passes the cap.

Linear's API has no comment total (no commentCount on Issue, no totalCount on the connection), so I fetch one more than pearl-list-comments-count-cap newest-first: that gives an exact total up to the cap and a "+" beyond it, in a single round trip. pearl-list-comments-shown (default 5) caps how many render. pearl-fetch-comments-in-list (default on) turns the whole thing off to keep the fetch light. The single-issue refresh still shows the full thread, uncapped and unmarked.

The marker sits on the Comments heading rather than the issue title, so it stays out of the title-sync hash. I relaxed the append locator to match a marked heading, so adding a comment still finds the existing subtree instead of creating a second one. Verified live: the capped fragment is accepted and the markers render correctly.

1 files changed, 102 insertions, 24 deletions

diff --git a/pearl.el b/pearl.el
index d0f21f4..b939ab3 100644
--- a/pearl.el
+++ b/pearl.el
@@ -843,8 +843,50 @@ is the already-extracted (normalized) list, so this stays pure."
 ;; raw nodes (the query fetches the full field superset); normalization happens
 ;; at the render boundary, not here.
 
-(defconst pearl--issues-query
-  "query Issues($filter: IssueFilter, $first: Int!, $after: String, $orderBy: PaginationOrderBy) {
+(defcustom pearl-fetch-comments-in-list t
+  "When non-nil, the bulk list and Custom View fetch each issue's recent comments.
+A populated list then renders the latest few comments per issue with a
+`💬 shown/total' marker on the Comments heading, instead of looking like
+nothing has comments.  Set to nil to keep the list fetch light (comments load
+only on a single-issue refresh)."
+  :type 'boolean
+  :group 'pearl)
+
+(defcustom pearl-list-comments-shown 5
+  "How many of an issue's most recent comments render in the bulk list.
+The single-issue refresh always shows the full thread; this caps only the
+list/view view.  See `pearl-fetch-comments-in-list'."
+  :type 'integer
+  :group 'pearl)
+
+(defcustom pearl-list-comments-count-cap 25
+  "Ceiling for the exact comment total shown in the bulk list marker.
+The fetch pulls one more than this so the marker can show an exact total up to
+the cap (`💬 5/18') and a `+' beyond it (`💬 5/25+').  A higher cap means an
+exact count for busier issues at the cost of a larger fetch."
+  :type 'integer
+  :group 'pearl)
+
+(defconst pearl--comment-node-fields
+  "id body createdAt user { id name displayName } botActor { name } externalUser { name }"
+  "The comment node field selection shared by every query that pulls comments.")
+
+(defun pearl--list-comments-fragment ()
+  "Return the GraphQL comments fragment for the bulk/view list, or empty string.
+Fetches one more than `pearl-list-comments-count-cap', newest first, so the
+renderer can show an exact total up to the cap and a `+' beyond it.  Empty when
+`pearl-fetch-comments-in-list' is nil, so the list fetch stays light."
+  (if pearl-fetch-comments-in-list
+      (format "comments(first: %d, orderBy: createdAt) { nodes { %s } }"
+              (1+ pearl-list-comments-count-cap)
+              pearl--comment-node-fields)
+    ""))
+
+(defun pearl--issues-query ()
+  "GraphQL query for a filtered, ordered page of issues.
+Pulls each issue's recent comments (see `pearl--list-comments-fragment') so a
+populated list renders them, not just the single-issue refresh."
+  (format "query Issues($filter: IssueFilter, $first: Int!, $after: String, $orderBy: PaginationOrderBy) {
   issues(filter: $filter, first: $first, after: $after, orderBy: $orderBy) {
     nodes {
       id identifier title description priority url updatedAt
@@ -854,14 +896,11 @@ is the already-extracted (normalized) list, so this stays pure."
       project { id name }
       labels { nodes { id name } }
       cycle { id number name }
-      comments { nodes { id body createdAt user { id name displayName } botActor { name } externalUser { name } } }
+      %s
     }
     pageInfo { hasNextPage endCursor }
   }
-}"
-  "GraphQL query for a filtered, ordered page of issues.
-Pulls comments per issue so a populated list renders them, not just the
-single-issue refresh.")
+}" (pearl--list-comments-fragment)))
 
 (defconst pearl--single-issue-query
   "query Issue($id: String!) {
@@ -877,8 +916,8 @@ single-issue refresh.")
   }
 }"
   "GraphQL query for one issue by id.
-Same field shape as `pearl--issues-query' (which now also pulls comments);
-this is the single-issue refresh path.")
+The single-issue refresh path: pulls the full comment thread uncapped (unlike
+the bulk list, which caps via `pearl--list-comments-fragment').")
 
 (defun pearl--fetch-issue-async (issue-id callback)
   "Fetch the full issue node for ISSUE-ID, calling CALLBACK with the outcome.
@@ -899,8 +938,11 @@ gone\" apart from \"the API call failed.\""
          (funcall callback (or issue :missing)))))
    (lambda (_error _response _data) (funcall callback :error))))
 
-(defconst pearl--view-issues-query
-  "query ViewIssues($id: String!, $first: Int!, $after: String) {
+(defun pearl--view-issues-query ()
+  "GraphQL query running a Custom View's own filter server-side, by view id.
+Pulls each issue's recent comments (see `pearl--list-comments-fragment') so a
+view-populated list renders them."
+  (format "query ViewIssues($id: String!, $first: Int!, $after: String) {
   customView(id: $id) {
     issues(first: $first, after: $after) {
       nodes {
@@ -911,14 +953,12 @@ gone\" apart from \"the API call failed.\""
         project { id name }
         labels { nodes { id name } }
         cycle { id number name }
-        comments { nodes { id body createdAt user { id name displayName } botActor { name } externalUser { name } } }
+        %s
       }
       pageInfo { hasNextPage endCursor }
     }
   }
-}"
-  "GraphQL query running a Custom View's own filter server-side, by view id.
-Pulls comments per issue so a view-populated list renders them.")
+}" (pearl--list-comments-fragment)))
 
 (defun pearl--query-view-async (view-id callback)
   "Run the Custom View VIEW-ID server-side, calling CALLBACK with a query-result.
@@ -927,7 +967,7 @@ raw nodes (normalized at the render boundary), paged like the general fetch."
   (let ((page-fn
          (lambda (after page-cb)
            (pearl--graphql-request-async
-            pearl--view-issues-query
+            (pearl--view-issues-query)
             `(("id" . ,view-id)
               ("first" . 100)
               ,@(when after (list (cons "after" after))))
@@ -1012,7 +1052,7 @@ nodes; normalization happens at the render boundary."
   (let ((page-fn
          (lambda (after page-cb)
            (pearl--graphql-request-async
-            pearl--issues-query
+            (pearl--issues-query)
             `(,@(when filter (list (cons "filter" filter)))
               ("first" . 100)
               ,@(when after (list (cons "after" after)))
@@ -1761,18 +1801,30 @@ A null author renders as `(unknown)'."
             ":END:\n"
             (if (string-empty-p body) "" (concat body "\n")))))
 
-(defun pearl--format-comments (comments)
+(defun pearl--comment-count-marker (count-info)
+  "Render COUNT-INFO as a ` 💬 shown/total[+]' suffix, or the empty string.
+COUNT-INFO is a plist (:shown N :total M :overflow BOOL) set on the bulk-list
+path; nil (the single-issue thread) yields no marker."
+  (if count-info
+      (format " 💬 %d/%d%s"
+              (plist-get count-info :shown)
+              (plist-get count-info :total)
+              (if (plist-get count-info :overflow) "+" ""))
+    ""))
+
+(defun pearl--format-comments (comments &optional count-info)
   "Format COMMENTS (a list of normalized comment plists) as a Comments subtree.
 Comments render oldest-first under a level-3 `Comments' heading.  Returns the
 empty string when COMMENTS is nil, so an issue with no comments renders no
-subtree."
+subtree.  COUNT-INFO, when non-nil, adds a `💬 shown/total' marker to the
+heading (the bulk list passes the issue's `:comment-count')."
   (if (null comments)
       ""
     (let ((sorted (sort (copy-sequence comments)
                         (lambda (a b)
                           (string< (or (plist-get a :created-at) "")
                                    (or (plist-get b :created-at) ""))))))
-      (concat "*** Comments\n"
+      (concat "*** Comments" (pearl--comment-count-marker count-info) "\n"
               (mapconcat #'pearl--format-comment sorted "")))))
 
 (defun pearl--format-issue-as-org-entry (issue)
@@ -1822,7 +1874,8 @@ identifier prefix -- so an unedited heading is a no-op on title sync)."
      (format ":LINEAR-TITLE-SHA256:     %s\n" (secure-hash 'sha256 display-title))
      ":END:\n"
      (if (string-empty-p body-org) "" (concat body-org "\n"))
-     (pearl--format-comments (plist-get issue :comments)))))
+     (pearl--format-comments (plist-get issue :comments)
+                             (plist-get issue :comment-count)))))
 
 ;;; Description Sync-Back
 
@@ -2365,7 +2418,8 @@ that subtree at the end of the issue when it does not exist yet."
     (let* ((issue-end (save-excursion (org-end-of-subtree t t) (point)))
            (comments-pos
             (save-excursion
-              (when (re-search-forward "^\\*+ Comments[ \t]*$" issue-end t)
+              ;; tolerate a trailing "💬 shown/total" marker on the heading
+              (when (re-search-forward "^\\*+ Comments\\(?:[ \t].*\\)?$" issue-end t)
                 (match-beginning 0)))))
       (if comments-pos
           (progn
@@ -2940,6 +2994,26 @@ filter; SAVE-NAME, when given, persists it via `pearl--save-query'."
      (pearl--build-issue-filter filter-plist)
      (lambda (result) (pearl--render-query-result result source)))))
 
+(defun pearl--cap-issue-list-comments (issue)
+  "Cap a bulk-list ISSUE's fetched comments and record a `:comment-count' marker.
+The list/view fetch pulls the newest `pearl-list-comments-count-cap'+1 comments
+newest-first; keep the newest `pearl-list-comments-shown' for display (the
+renderer re-sorts those oldest-first) and set `:comment-count' to (:shown N
+:total M :overflow BOOL), where the total is exact up to the cap and overflows
+past it.  An issue with no fetched comments is returned unchanged, so it renders
+no Comments subtree."
+  (let ((comments (plist-get issue :comments)))
+    (if (null comments)
+        issue
+      (let* ((n (length comments))
+             (cap pearl-list-comments-count-cap)
+             (overflow (> n cap))
+             (total (if overflow cap n))
+             (shown (seq-take comments pearl-list-comments-shown)))
+        (plist-put
+         (plist-put (copy-sequence issue) :comments shown)
+         :comment-count (list :shown (length shown) :total total :overflow overflow))))))
+
 (defun pearl--render-query-result (result source)
   "Render a query RESULT into the active file, tagged with SOURCE.
 Normalizes the raw nodes, writes them via `pearl--update-org-from-issues'
@@ -2949,7 +3023,9 @@ refresh."
   (pcase (pearl--query-result-status result)
     ('ok
      (let ((issues (pearl--sort-issues
-                    (mapcar #'pearl--normalize-issue
+                    (mapcar (lambda (n)
+                              (pearl--cap-issue-list-comments
+                               (pearl--normalize-issue n)))
                             (pearl--query-result-issues result))
                     (plist-get source :sort)
                     (plist-get source :order)))
@@ -3087,7 +3163,9 @@ of the replace path."
   (pcase (pearl--query-result-status result)
     ('ok
      (let* ((issues (pearl--sort-issues
-                     (mapcar #'pearl--normalize-issue
+                     (mapcar (lambda (n)
+                               (pearl--cap-issue-list-comments
+                                (pearl--normalize-issue n)))
                              (pearl--query-result-issues result))
                      (plist-get source :sort)
                      (plist-get source :order)))