import { describe, expect, it, vi } from "vitest";

import { AgentPrepHandler } from "#src/handlers/before-agent-start";

import { makeCheckResult, makeCtx } from "#test/helpers/handler-fixtures";
import {
  makeRealResolver,
  makeRealSession,
} from "#test/helpers/session-fixtures";

function makeSetup() {
  const { session, permissionManager, sessionRules, configStore, forwarding } =
    makeRealSession();
  const { resolver } = makeRealResolver(permissionManager, sessionRules);
  vi.mocked(permissionManager.check).mockReturnValue(makeCheckResult());
  const warmParser = vi.fn();
  const handler = new AgentPrepHandler(session, resolver, warmParser);
  return {
    handler,
    session,
    configStore,
    forwarding,
    warmParser,
  };
}

describe("AgentPrepHandler", () => {
  it("warms the parser and activates the permission session", async () => {
    const { handler, forwarding, warmParser } = makeSetup();
    const ctx = makeCtx();

    await handler.handle({ systemPrompt: "You are an assistant." }, ctx);

    expect(warmParser).toHaveBeenCalledTimes(1);
    expect(forwarding.start).toHaveBeenCalledWith(ctx);
  });

  it("refreshes global permission configuration", async () => {
    const { handler, configStore } = makeSetup();
    const ctx = makeCtx({ isProjectTrusted: () => false });

    await handler.handle({ systemPrompt: "You are an assistant." }, ctx);

    expect(configStore.refresh).toHaveBeenCalledWith(ctx, false);
  });

  it("does not rewrite a prompt without skill entries", async () => {
    const { handler, session } = makeSetup();

    const result = await handler.handle(
      { systemPrompt: "You are an assistant." },
      makeCtx(),
    );

    expect(result).toEqual({});
    expect(session.getActiveSkillEntries()).toEqual([]);
  });
});