fix(project): push SSE update when an issue on a board is closed/reopened

Closing or reopening an issue did not notify project boards that carry
it as a card, so board tabs showed stale state until a manual reload.
CloseIssue/ReopenIssue only published milestone events and the issue
timeline notification — nothing project-scoped.

Add a CardStateChanged project event, published per linked project from
CloseIssue/ReopenIssue (best-effort; never fails the state change). The
board frontend flips the issue-state octicon in place and refetches the
affected column so state-filtered boards and counts stay correct. The
dispatch check precedes the CardUnlinked branch so a close/reopen is
not mistaken for a card removal.

Also switch a pre-existing String#match to RegExp#exec in the same file
to keep it lint-clean.

Closes #19

services/issue/status.go

@@ -12,8 +12,27 @@ import (
 	"code.gitea.io/gitea/modules/log"
 	milestone_events "code.gitea.io/gitea/services/milestone_events"
 	notify_service "code.gitea.io/gitea/services/notify"
+	project_events "code.gitea.io/gitea/services/project_events"
 )
 
+// publishProjectCardStateChanged notifies every project board the issue is a
+// card on that its open/closed state changed, so subscribed board tabs can
+// re-render the card live instead of showing stale state until reload.
+// Best-effort: a failure here must not fail the close/reopen operation.
+func publishProjectCardStateChanged(ctx context.Context, issue *issues_model.Issue, isClosed bool) {
+	if err := issue.LoadProjects(ctx); err != nil {
+		log.Error("LoadProjects for issue[%d]: %v", issue.ID, err)
+		return
+	}
+	for _, p := range issue.Projects {
+		project_events.PublishCardStateChanged(ctx, project_events.CardStateChanged{
+			ProjectID: p.ID,
+			IssueID:   issue.ID,
+			IsClosed:  isClosed,
+		})
+	}
+}
+
 // CloseIssue close an issue.
 func CloseIssue(ctx context.Context, issue *issues_model.Issue, doer *user_model.User, commitID string) error {
 	var comment *issues_model.Comment
@@ -40,6 +59,7 @@ func CloseIssue(ctx context.Context, issue *issues_model.Issue, doer *user_model
 	}
 
 	notify_service.IssueChangeStatus(ctx, doer, commitID, issue, comment, true)
+	publishProjectCardStateChanged(ctx, issue, true)
 
 	return nil
 }
@@ -57,6 +77,7 @@ func ReopenIssue(ctx context.Context, issue *issues_model.Issue, doer *user_mode
 	}
 
 	notify_service.IssueChangeStatus(ctx, doer, commitID, issue, comment, false)
+	publishProjectCardStateChanged(ctx, issue, false)
 
 	return nil
 }

services/project_events/events.go

@@ -69,6 +69,17 @@ type CardUnlinked struct {
 	SessionTag string `json:"session_tag,omitempty"`
 }
 
+// CardStateChanged is emitted when an issue's open/closed state changes
+// while it is a card on the project. It lets boards re-render the card's
+// state live (and is the hook state-filtered boards use to correct their
+// column counts) without a full page reload.
+type CardStateChanged struct {
+	ProjectID  int64  `json:"project_id"`
+	IssueID    int64  `json:"issue_id"`
+	IsClosed   bool   `json:"is_closed"`
+	SessionTag string `json:"session_tag,omitempty"`
+}
+
 // ColumnCreated is emitted when a new column is added to a project.
 type ColumnCreated struct {
 	ProjectID int64  `json:"project_id"`
@@ -277,6 +288,14 @@ func PublishCardUnlinked(ctx context.Context, payload CardUnlinked) {
 	go publishEvent(detach(ctx), payload.ProjectID, payload)
 }
 
+// PublishCardStateChanged fans out a CardStateChanged event for the given payload.
+func PublishCardStateChanged(ctx context.Context, payload CardStateChanged) {
+	if payload.SessionTag == "" {
+		payload.SessionTag = SessionTagFromContext(ctx)
+	}
+	go publishEvent(detach(ctx), payload.ProjectID, payload)
+}
+
 // PublishColumnCreated fans out a ColumnCreated event for the given payload.
 func PublishColumnCreated(ctx context.Context, payload ColumnCreated) {
 	go publishEvent(detach(ctx), payload.ProjectID, payload)

services/project_events/events_test.go

@@ -112,6 +112,14 @@ func TestPublishHelpers_NameAndPayload(t *testing.T) {
 			},
 			wantData: CardUnlinked{ProjectID: 12, IssueID: 8},
 		},
+		{
+			name:     "card.state_changed",
+			wantName: "project-board.12",
+			invoke: func(ctx context.Context) {
+				PublishCardStateChanged(ctx, CardStateChanged{ProjectID: 12, IssueID: 8, IsClosed: true})
+			},
+			wantData: CardStateChanged{ProjectID: 12, IssueID: 8, IsClosed: true},
+		},
 		{
 			name:     "column.created",
 			wantName: "project-board.13",

web_src/js/features/repo-projects.ts

@@ -14,7 +14,7 @@ import {showInfoToast, showWarningToast} from '../modules/toast.ts';
 // rendered "#index" anchor text and falling back to the internal id.
 function issueRef(card: HTMLElement | null, issueID: number): string {
   const idx = card?.querySelector('.issue-card-title, .ref-issue, a[href*="/issues/"]')?.textContent?.trim();
-  const m = idx?.match(/#\d+/);
+  const m = /#\d+/.exec(idx ?? '');
   return m ? m[0] : `#${issueID}`;
 }
 
@@ -237,6 +237,12 @@ type CardUnlinkedPayload = EventPayloadBase & {
   issue_id: number;
 };
 
+type CardStateChangedPayload = EventPayloadBase & {
+  project_id: number;
+  issue_id: number;
+  is_closed: boolean;
+};
+
 type ColumnUpdatedPayload = {
   project_id: number;
   column_id: number;
@@ -352,6 +358,30 @@ function handleCardUnlinked(board: HTMLElement, payload: CardUnlinkedPayload): v
   showInfoToast(`${ref} removed from board`);
 }
 
+function handleCardStateChanged(board: HTMLElement, payload: CardStateChangedPayload): void {
+  if (payload.session_tag && payload.session_tag === sessionTag) return;
+  const card = board.querySelector<HTMLElement>(`.issue-card[data-issue="${payload.issue_id}"]`);
+  if (!card) return;
+  // Flip the issue state octicon in place (matches templates/shared/issueicon.tmpl).
+  // PR cards carry merged/draft variants we don't recompute here; the column
+  // refetch below keeps state-filtered boards and counts correct regardless.
+  const icon = card.querySelector<SVGElement>('.issue-card-icon svg');
+  if (icon && !icon.classList.contains('octicon-git-pull-request')) {
+    icon.classList.remove('octicon-issue-opened', 'octicon-issue-closed', 'tw-text-green', 'tw-text-red');
+    icon.classList.add(
+      payload.is_closed ? 'octicon-issue-closed' : 'octicon-issue-opened',
+      payload.is_closed ? 'tw-text-red' : 'tw-text-green',
+    );
+  }
+  const ref = issueRef(card, payload.issue_id);
+  // The card's containing column is `#board_{columnID}` (its direct parent).
+  const parent = card.parentElement;
+  if (parent instanceof HTMLElement && parent.id.startsWith('board_')) {
+    refetchColumn(board, Number(parent.id.slice('board_'.length)));
+  }
+  showInfoToast(`${ref} ${payload.is_closed ? 'closed' : 'reopened'}`);
+}
+
 function handleColumnCreated(): void {
   // Rare event; reload is cheap and avoids client-side template duplication.
   window.location.reload();
@@ -423,7 +453,12 @@ function handleProjectDeleted(): void {
 // types by payload shape; we sniff discriminating fields here. Order
 // matters: the more specific shapes are checked first.
 function dispatchProjectEvent(board: HTMLElement, payload: any): void {
-  if ('from_column_id' in payload && 'to_column_id' in payload) {
+  if ('issue_id' in payload && 'is_closed' in payload) {
+    // CardStateChanged: must precede the CardUnlinked branch below, whose
+    // "issue_id and no column_id" shape would otherwise swallow it and
+    // wrongly remove the card on a close/reopen.
+    handleCardStateChanged(board, payload as CardStateChangedPayload);
+  } else if ('from_column_id' in payload && 'to_column_id' in payload) {
     handleCardMoved(board, payload as CardMovedPayload);
   } else if ('column_id' in payload && 'issue_id' in payload && 'project_id' in payload) {
     handleCardLinked(board, payload as CardLinkedPayload);