feat: polish issue thread markdown and references

ui/src/lib/issue-reference.test.ts

@@ -0,0 +1,31 @@
+import { describe, expect, it } from "vitest";
+import { parseIssuePathIdFromPath, parseIssueReferenceFromHref } from "./issue-reference";
+
+describe("issue-reference", () => {
+  it("extracts issue ids from company-scoped issue paths", () => {
+    expect(parseIssuePathIdFromPath("/PAP/issues/PAP-1271")).toBe("PAP-1271");
+    expect(parseIssuePathIdFromPath("/issues/PAP-1179")).toBe("PAP-1179");
+  });
+
+  it("extracts issue ids from full issue URLs", () => {
+    expect(parseIssuePathIdFromPath("http://localhost:3100/PAP/issues/PAP-1179")).toBe("PAP-1179");
+  });
+
+  it("normalizes bare identifiers and issue URLs into internal links", () => {
+    expect(parseIssueReferenceFromHref("pap-1271")).toEqual({
+      issuePathId: "PAP-1271",
+      href: "/issues/PAP-1271",
+    });
+    expect(parseIssueReferenceFromHref("http://localhost:3100/PAP/issues/PAP-1179")).toEqual({
+      issuePathId: "PAP-1179",
+      href: "/issues/PAP-1179",
+    });
+  });
+
+  it("normalizes exact inline-code-like issue identifiers", () => {
+    expect(parseIssueReferenceFromHref("PAP-1271")).toEqual({
+      issuePathId: "PAP-1271",
+      href: "/issues/PAP-1271",
+    });
+  });
+});

ui/src/lib/issue-reference.ts

@@ -0,0 +1,143 @@
+type MarkdownNode = {
+  type: string;
+  value?: string;
+  url?: string;
+  children?: MarkdownNode[];
+};
+
+const BARE_ISSUE_IDENTIFIER_RE = /^[A-Z][A-Z0-9]+-\d+$/i;
+const ISSUE_REFERENCE_TOKEN_RE = /https?:\/\/[^\s<>()]+|\b[A-Z][A-Z0-9]+-\d+\b/gi;
+
+export function parseIssuePathIdFromPath(pathOrUrl: string | null | undefined): string | null {
+  if (!pathOrUrl) return null;
+  let pathname = pathOrUrl.trim();
+  if (!pathname) return null;
+
+  if (/^https?:\/\//i.test(pathname)) {
+    try {
+      pathname = new URL(pathname).pathname;
+    } catch {
+      return null;
+    }
+  }
+
+  const segments = pathname.split("/").filter(Boolean);
+  const issueIndex = segments.findIndex((segment) => segment === "issues");
+  if (issueIndex === -1 || issueIndex === segments.length - 1) return null;
+  return decodeURIComponent(segments[issueIndex + 1] ?? "");
+}
+
+export function parseIssueReferenceFromHref(href: string | null | undefined) {
+  if (!href) return null;
+  const pathId = parseIssuePathIdFromPath(href);
+  if (pathId) {
+    return {
+      issuePathId: pathId,
+      href: `/issues/${encodeURIComponent(pathId)}`,
+    };
+  }
+
+  const trimmed = href.trim();
+  if (!BARE_ISSUE_IDENTIFIER_RE.test(trimmed)) return null;
+  const normalized = trimmed.toUpperCase();
+  return {
+    issuePathId: normalized,
+    href: `/issues/${encodeURIComponent(normalized)}`,
+  };
+}
+
+function splitTrailingPunctuation(token: string) {
+  let core = token;
+  let trailing = "";
+
+  while (core.length > 0) {
+    const lastChar = core.at(-1);
+    if (!lastChar || !/[),.;!?]/.test(lastChar)) break;
+    if (lastChar === ")") {
+      const openCount = (core.match(/\(/g) ?? []).length;
+      const closeCount = (core.match(/\)/g) ?? []).length;
+      if (closeCount <= openCount) break;
+    }
+    trailing = `${lastChar}${trailing}`;
+    core = core.slice(0, -1);
+  }
+
+  return { core, trailing };
+}
+
+function createIssueLinkNode(value: string, href: string, childType: "text" | "inlineCode" = "text"): MarkdownNode {
+  return {
+    type: "link",
+    url: href,
+    children: [{ type: childType, value }],
+  };
+}
+
+function linkifyIssueReferencesInText(value: string): MarkdownNode[] | null {
+  const nodes: MarkdownNode[] = [];
+  let cursor = 0;
+  let matched = false;
+
+  for (const match of value.matchAll(ISSUE_REFERENCE_TOKEN_RE)) {
+    const raw = match[0];
+    if (!raw) continue;
+
+    const start = match.index ?? 0;
+    const end = start + raw.length;
+    const { core, trailing } = splitTrailingPunctuation(raw);
+    const issueRef = parseIssueReferenceFromHref(core);
+    if (!issueRef) continue;
+
+    matched = true;
+    if (start > cursor) {
+      nodes.push({ type: "text", value: value.slice(cursor, start) });
+    }
+    nodes.push(createIssueLinkNode(core, issueRef.href));
+    if (trailing) {
+      nodes.push({ type: "text", value: trailing });
+    }
+    cursor = end;
+  }
+
+  if (!matched) return null;
+  if (cursor < value.length) {
+    nodes.push({ type: "text", value: value.slice(cursor) });
+  }
+  return nodes;
+}
+
+function rewriteMarkdownTree(node: MarkdownNode) {
+  if (!Array.isArray(node.children) || node.children.length === 0) return;
+  if (node.type === "link" || node.type === "linkReference" || node.type === "code" || node.type === "definition" || node.type === "html") {
+    return;
+  }
+
+  const nextChildren: MarkdownNode[] = [];
+  for (const child of node.children) {
+    if (child.type === "inlineCode" && typeof child.value === "string") {
+      const issueRef = parseIssueReferenceFromHref(child.value);
+      if (issueRef) {
+        nextChildren.push(createIssueLinkNode(child.value, issueRef.href, "inlineCode"));
+        continue;
+      }
+    }
+
+    if (child.type === "text" && typeof child.value === "string") {
+      const linked = linkifyIssueReferencesInText(child.value);
+      if (linked) {
+        nextChildren.push(...linked);
+        continue;
+      }
+    }
+
+    rewriteMarkdownTree(child);
+    nextChildren.push(child);
+  }
+  node.children = nextChildren;
+}
+
+export function remarkLinkIssueReferences() {
+  return (tree: MarkdownNode) => {
+    rewriteMarkdownTree(tree);
+  };
+}

ui/src/lib/optimistic-issue-comments.test.ts

@@ -312,6 +312,22 @@ describe("optimistic issue comments", () => {
         projectWorkspaceId: "workspace-1",
         goalId: null,
         parentId: null,
+        ancestors: [
+          {
+            id: "issue-9",
+            identifier: "PAP-9",
+            title: "Old parent",
+            description: null,
+            status: "todo",
+            priority: "medium",
+            assigneeAgentId: null,
+            assigneeUserId: null,
+            projectId: null,
+            goalId: null,
+            project: null,
+            goal: null,
+          },
+        ],
         title: "Fix property pane",
         description: null,
         status: "todo",
@@ -449,6 +465,7 @@ describe("optimistic issue comments", () => {
         assigneeUserId: "board-2",
         labelIds: ["label-2"],
         blockedByIssueIds: ["issue-3"],
+        parentId: "issue-4",
         projectId: "project-2",
         executionWorkspaceId: "exec-2",
       },
@@ -460,6 +477,8 @@ describe("optimistic issue comments", () => {
     expect(next?.labelIds).toEqual(["label-2"]);
     expect(next?.labels?.map((label) => label.id)).toEqual(["label-2"]);
     expect(next?.blockedBy?.map((relation) => relation.id)).toEqual(["issue-3"]);
+    expect(next?.parentId).toBe("issue-4");
+    expect(next?.ancestors).toBeUndefined();
     expect(next?.projectId).toBe("project-2");
     expect(next?.project).toBeNull();
     expect(next?.executionWorkspaceId).toBe("exec-2");

ui/src/lib/optimistic-issue-comments.ts

@@ -169,6 +169,7 @@ export function applyOptimisticIssueFieldUpdate(
   assign("assigneeAgentId");
   assign("assigneeUserId");
   assign("projectId");
+  assign("parentId");
   assign("projectWorkspaceId");
   assign("executionWorkspaceId");
   assign("executionWorkspacePreference");
@@ -194,6 +195,10 @@ export function applyOptimisticIssueFieldUpdate(
     nextIssue.project = issue.project?.id === nextIssue.projectId ? issue.project : null;
   }
 
+  if (hasOwn("parentId")) {
+    nextIssue.ancestors = undefined;
+  }
+
   if (hasOwn("executionWorkspaceId")) {
     nextIssue.currentExecutionWorkspace =
       issue.currentExecutionWorkspace?.id === nextIssue.executionWorkspaceId

ui/src/lib/remark-soft-breaks.ts

@@ -0,0 +1,63 @@
+type MarkdownNode = {
+  type?: unknown;
+  value?: unknown;
+  children?: unknown;
+};
+
+type MarkdownTextNode = {
+  type: "text";
+  value: string;
+};
+
+type MarkdownBreakNode = {
+  type: "break";
+};
+
+type MarkdownParentNode = {
+  children: MarkdownTreeNode[];
+};
+
+type MarkdownTreeNode = MarkdownTextNode | MarkdownBreakNode | (MarkdownNode & { children?: MarkdownTreeNode[] });
+
+function isParentNode(value: unknown): value is MarkdownParentNode {
+  return typeof value === "object" && value !== null && Array.isArray((value as MarkdownNode).children);
+}
+
+function buildSoftBreakReplacement(value: string): Array<MarkdownTextNode | MarkdownBreakNode> {
+  const parts = value.split("\n");
+  const replacement: Array<MarkdownTextNode | MarkdownBreakNode> = [];
+
+  for (let index = 0; index < parts.length; index += 1) {
+    const part = parts[index];
+    if (part.length > 0) {
+      replacement.push({ type: "text", value: part });
+    }
+    if (index < parts.length - 1) {
+      replacement.push({ type: "break" });
+    }
+  }
+
+  return replacement.length > 0 ? replacement : [{ type: "text", value: "" }];
+}
+
+function transformNode(node: MarkdownTreeNode) {
+  if (!isParentNode(node)) return;
+
+  for (let index = 0; index < node.children.length; index += 1) {
+    const child = node.children[index];
+    if (child?.type === "text" && typeof child.value === "string" && child.value.includes("\n")) {
+      const replacement = buildSoftBreakReplacement(child.value);
+      node.children.splice(index, 1, ...replacement);
+      index += replacement.length - 1;
+      continue;
+    }
+
+    transformNode(child);
+  }
+}
+
+export function remarkSoftBreaks() {
+  return (tree: MarkdownTreeNode) => {
+    transformNode(tree);
+  };
+}

ui/src/lib/router.tsx

@@ -2,11 +2,13 @@ import * as React from "react";
 import * as RouterDom from "react-router-dom";
 import type { NavigateOptions, To } from "react-router-dom";
 import { useCompany } from "@/context/CompanyContext";
+import { IssueLinkQuicklook } from "@/components/IssueLinkQuicklook";
 import {
   applyCompanyPrefix,
   extractCompanyPrefixFromPath,
   normalizeCompanyPrefix,
 } from "@/lib/company-routes";
+import { parseIssuePathIdFromPath } from "@/lib/issue-reference";
 
 function resolveTo(to: To, companyPrefix: string | null): To {
   if (typeof to === "string") {
@@ -40,10 +42,23 @@ function useActiveCompanyPrefix(): string | null {
 
 export * from "react-router-dom";
 
-export const Link = React.forwardRef<HTMLAnchorElement, React.ComponentProps<typeof RouterDom.Link>>(
-  function CompanyLink({ to, ...props }, ref) {
+type CompanyLinkProps = React.ComponentProps<typeof RouterDom.Link> & {
+  disableIssueQuicklook?: boolean;
+};
+
+export const Link = React.forwardRef<HTMLAnchorElement, CompanyLinkProps>(
+  function CompanyLink({ to, disableIssueQuicklook = false, ...props }, ref) {
     const companyPrefix = useActiveCompanyPrefix();
-    return <RouterDom.Link ref={ref} to={resolveTo(to, companyPrefix)} {...props} />;
+    const resolvedTo = resolveTo(to, companyPrefix);
+    const issuePathId = disableIssueQuicklook
+      ? null
+      : parseIssuePathIdFromPath(typeof resolvedTo === "string" ? resolvedTo : resolvedTo.pathname);
+
+    if (issuePathId) {
+      return <IssueLinkQuicklook ref={ref} to={resolvedTo} issuePathId={issuePathId} {...props} />;
+    }
+
+    return <RouterDom.Link ref={ref} to={resolvedTo} {...props} />;
   },
 );