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");
  });

  it("formats monitor activity with direct verbs", () => {
    expect(formatActivityVerb("issue.monitor_scheduled")).toBe("scheduled monitor on");
    expect(formatActivityVerb("issue.monitor_exhausted")).toBe("exhausted monitor on");
    expect(formatIssueActivityAction("issue.monitor_triggered")).toBe("triggered a monitor");
    expect(formatIssueActivityAction("issue.monitor_cleared")).toBe("cleared a monitor");
    expect(formatIssueActivityAction("issue.monitor_recovery_issue_created")).toBe("created a monitor recovery issue");
  });

  // PAP-16506 P4: agents can now resolve an interaction, including a review of
  // their own work, so an outcome has to read as an outcome in the timeline
  // instead of leaking the raw action id.
  it("reads an interaction outcome as an outcome, whoever gave it", () => {
    expect(formatIssueActivityAction("issue.thread_interaction_accepted")).toBe("accepted the request");
    expect(formatIssueActivityAction("issue.thread_interaction_rejected")).toBe("rejected the request");
    expect(formatIssueActivityAction("issue.thread_interaction_withdrawn")).toBe("withdrew the request");
    expect(formatIssueActivityAction("issue.thread_interaction_expired")).toBe("expired the request");
    expect(formatActivityVerb("issue.thread_interaction_accepted")).toBe("accepted the request on");
    expect(formatActivityVerb("issue.thread_interaction_rejected")).toBe("rejected the request on");
  });

  // The accepted/rejected actions fire for every interaction kind, so only a
  // confirmation may read as an approval.
  it("says 'approved' only for a confirmation, never for a suggestion or a question", () => {
    expect(formatIssueActivityAction("issue.thread_interaction_accepted", { interactionKind: "request_confirmation" }))
      .toBe("approved the request");
    expect(formatIssueActivityAction("issue.thread_interaction_accepted", { interactionKind: "request_checkbox_confirmation" }))
      .toBe("approved the request");
    expect(formatIssueActivityAction("issue.thread_interaction_accepted", { interactionKind: "suggest_tasks" }))
      .toBe("accepted the task suggestions");
    expect(formatIssueActivityAction("issue.thread_interaction_accepted", { interactionKind: "ask_user_questions" }))
      .toBe("accepted the answers");
    expect(formatIssueActivityAction("issue.thread_interaction_rejected", { interactionKind: "request_confirmation" }))
      .toBe("rejected the request");
    expect(formatIssueActivityAction("issue.thread_interaction_rejected", { interactionKind: "suggest_tasks" }))
      .toBe("declined the task suggestions");
    expect(formatActivityVerb("issue.thread_interaction_accepted", { interactionKind: "suggest_tasks" }))
      .toBe("accepted the task suggestions on");
  });

  it("keeps the neutral wording for a kind it does not know", () => {
    expect(formatIssueActivityAction("issue.thread_interaction_accepted", { interactionKind: "request_item_verdicts" }))
      .toBe("accepted the request");
    expect(formatIssueActivityAction("issue.thread_interaction_accepted", { interactionKind: "future_kind" }))
      .toBe("accepted the request");
    expect(formatIssueActivityAction("issue.thread_interaction_accepted", { interactionKind: 7 }))
      .toBe("accepted the request");
  });

  it("names the verb an actor chose on a stalled review", () => {
    expect(formatIssueActivityAction("issue.stalled_review_decided", { action: "approve" }))
      .toBe("approved the review");
    expect(formatIssueActivityAction("issue.stalled_review_decided", { action: "request_changes" }))
      .toBe("requested changes on the review");
    expect(formatIssueActivityAction("issue.stalled_review_decided", { action: "send_back" }))
      .toBe("sent the review back to work");
    expect(formatActivityVerb("issue.stalled_review_decided", { action: "approve" }))
      .toBe("approved the review on");
  });

  it("falls back to a generic verdict line when the decision verb is missing", () => {
    expect(formatIssueActivityAction("issue.stalled_review_decided")).toBe("recorded a review verdict");
    expect(formatIssueActivityAction("issue.stalled_review_decided", { action: "shrug" }))
      .toBe("recorded a review verdict");
  });

  it("describes a review-policy change without calling the default 'none'", () => {
    expect(formatIssueActivityAction("issue.updated", { reviewPolicy: null }))
      .toBe("changed who can approve to anyone");
    expect(formatIssueActivityAction("issue.updated", { reviewPolicy: "human_only" }))
      .toBe("changed who can approve to human only");
    expect(formatIssueActivityAction("issue.updated", { reviewPolicy: "not_creator" }))
      .toBe("changed who can approve to anyone else");
  });

  it("uses plain next-step copy for successful-run handoff activity", () => {
    expect(formatActivityVerb("issue.successful_run_handoff_required")).toBe("flagged missing next step on");
    expect(formatIssueActivityAction("issue.successful_run_handoff_required")).toBe("Run finished without a clear next step");
    expect(formatIssueActivityAction("issue.successful_run_handoff_resolved")).toBe("Next step chosen");
    expect(formatIssueActivityAction("issue.successful_run_handoff_escalated")).toBe(
      "Run finished without a next step - recovery escalated",
    );
  });
});