/**
 * @file AgentDetails.test.tsx
 * @description Verifies what the chat shows of a subagent: an Agent step's
 * facts, task and report (from its result, or the task-notification that
 * closed a background one), and that "View conversation" opens that
 * agent's own conversation in place, rendered by the chat's owner.
 * @author Nguyễn Ngọc Trí Vĩ <vinnt@smartgift.vn>
 */
import { fireEvent, render, screen } from "@testing-library/react";
import { describe, expect, it, vi } from "vitest";
import { MessageList } from "../MessageList";
import { agentNotices, agentRef, parseUsage, type AgentLinks } from "../AgentDetails";
import type { TranscriptContent, TranscriptMessage } from "../../../lib/types";

const at = new Date().toISOString();
const m = (p: Partial<TranscriptMessage>): TranscriptMessage =>
  ({ type: "user", timestamp: at, content: [], ...p }) as TranscriptMessage;

const call: TranscriptContent = {
  type: "tool_use",
  id: "t1",
  name: "Agent",
  input: { description: "Map the hooks", subagent_type: "Explore", prompt: "Read **server/**" },
};
const links = (p: Partial<AgentLinks> = {}): AgentLinks => ({
  ids: new Map(),
  notices: new Map(),
  live: false,
  ...p,
});

describe("agentRef", () => {
  it("reads a foreground agent's facts and report, without the orchestrator's footer", () => {
    const a = agentRef(
      call,
      {
        type: "tool_result",
        id: "t1",
        output: "The hooks live in server/routes/hooks.js.\n\nagentId: a1b2 (for resuming)",
        agent: {
          id: "a1b2",
          model: "claude-opus-5-5",
          status: "completed",
          duration_ms: 65_000,
          tokens: 12_000,
          tool_uses: 7,
        },
      },
      links()
    );
    expect(a).toMatchObject({
      agentId: "a1b2",
      type: "Explore",
      status: "done",
      background: false,
      prompt: "Read **server/**",
      report: "The hooks live in server/routes/hooks.js.",
      durationMs: 65_000,
      tokens: 12_000,
      toolUses: 7,
    });
  });

  it("closes a background agent with its notification's report and usage", () => {
    const notice = m({
      content: [
        {
          type: "text",
          text: "<task-notification>\n<tool-use-id>t1</tool-use-id>\n<status>completed</status>\n<result>All done</result>\n<usage><subagent_tokens>88007</subagent_tokens><tool_uses>31</tool_uses><duration_ms>132350</duration_ms></usage>\n</task-notification>",
        },
      ],
    });
    const launched: TranscriptContent = {
      type: "tool_result",
      id: "t1",
      output: "Async agent launched successfully.\nagentId: a9b4",
    };
    const running = agentRef(call, launched, links({ live: true }));
    expect(running).toMatchObject({ status: "running", background: true, report: null });
    const done = agentRef(call, launched, links({ notices: agentNotices([notice]) }));
    expect(done).toMatchObject({
      agentId: "a9b4",
      status: "done",
      report: "All done",
      tokens: 88007,
      toolUses: 31,
      durationMs: 132350,
    });
  });

  it("finds the transcript from the session's list when the result names none", () => {
    const a = agentRef(call, null, links({ ids: new Map([["t1", "c3d4"]]) }));
    expect(a).toMatchObject({ agentId: "c3d4", status: "stopped" });
  });

  it("parses the line form of a usage block", () => {
    expect(parseUsage("<usage>total_tokens: 500\ntool_uses: 3\nduration_ms: 900</usage>")).toEqual({
      tokens: 500,
      toolUses: 3,
      durationMs: 900,
    });
  });
});

describe("an Agent step in the chat", () => {
  it("shows the agent's facts and report, and opens its conversation in place", () => {
    const render_ = vi.fn((a: { agentId: string | null }) => <p>chat of {a.agentId}</p>);
    render(
      <MessageList
        loading={false}
        agentLinks={links({ render: render_ })}
        messages={[
          m({ sender: "user", content: [{ type: "text", text: "go" }] }),
          m({ type: "assistant", sender: "assistant", stop_reason: "tool_use", content: [call] }),
          m({
            content: [
              {
                type: "tool_result",
                id: "t1",
                output: "Found **3** hooks",
                agent: {
                  id: "a1b2",
                  model: null,
                  status: "completed",
                  duration_ms: null,
                  tokens: null,
                  tool_uses: 4,
                },
              },
            ],
          }),
        ]}
      />
    );
    fireEvent.click(screen.getByRole("button", { name: /ran an agent/i }));
    expect(screen.getByTestId("agent-facts").textContent).toContain("Explore");
    expect(screen.getByTestId("agent-facts").textContent).toContain("done");
    expect(screen.getByTestId("agent-facts").textContent).toContain("4 tool calls");
    expect(screen.getByTestId("agent-step").textContent).toContain("Found 3 hooks");
    expect(screen.queryByTestId("agent-chat")).toBeNull();
    fireEvent.click(screen.getByTestId("agent-open"));
    expect(screen.getByTestId("agent-chat").textContent).toBe("chat of a1b2");
    // The thread takes the report's place.
    expect(screen.getByTestId("agent-step").textContent).not.toContain("Found 3 hooks");
  });
});