Track blocker and review activity events

ui/src/lib/activity-format.test.ts

@@ -0,0 +1,60 @@
+import type { Agent } from "@paperclipai/shared";
+import { describe, expect, it } from "vitest";
+import { formatActivityVerb, formatIssueActivityAction } from "./activity-format";
+
+describe("activity formatting", () => {
+  const agentMap = new Map<string, Agent>([
+    ["agent-reviewer", { id: "agent-reviewer", name: "Reviewer Bot" } as Agent],
+    ["agent-approver", { id: "agent-approver", name: "Approver Bot" } as Agent],
+  ]);
+
+  it("formats blocker activity using linked issue identifiers", () => {
+    const details = {
+      addedBlockedByIssues: [
+        { id: "issue-2", identifier: "PAP-22", title: "Blocked task" },
+      ],
+      removedBlockedByIssues: [],
+    };
+
+    expect(formatActivityVerb("issue.blockers_updated", details)).toBe("added blocker PAP-22 to");
+    expect(formatIssueActivityAction("issue.blockers_updated", details)).toBe("added blocker PAP-22");
+  });
+
+  it("formats reviewer activity using agent names", () => {
+    const details = {
+      addedParticipants: [
+        { type: "agent", agentId: "agent-reviewer", userId: null },
+      ],
+      removedParticipants: [],
+    };
+
+    expect(formatActivityVerb("issue.reviewers_updated", details, { agentMap })).toBe("added reviewer Reviewer Bot to");
+    expect(formatIssueActivityAction("issue.reviewers_updated", details, { agentMap })).toBe("added reviewer Reviewer Bot");
+  });
+
+  it("formats approver removals using user-aware labels", () => {
+    const details = {
+      addedParticipants: [],
+      removedParticipants: [
+        { type: "user", agentId: null, userId: "local-board" },
+      ],
+    };
+
+    expect(formatActivityVerb("issue.approvers_updated", details)).toBe("removed approver Board from");
+    expect(formatIssueActivityAction("issue.approvers_updated", details)).toBe("removed approver Board");
+  });
+
+  it("falls back to updated wording when reviewers are both added and removed", () => {
+    const details = {
+      addedParticipants: [
+        { type: "agent", agentId: "agent-reviewer", userId: null },
+      ],
+      removedParticipants: [
+        { type: "agent", agentId: "agent-approver", userId: null },
+      ],
+    };
+
+    expect(formatActivityVerb("issue.reviewers_updated", details, { agentMap })).toBe("updated reviewers on");
+    expect(formatIssueActivityAction("issue.reviewers_updated", details, { agentMap })).toBe("updated reviewers");
+  });
+});