/**
 * Integration tests for Crewing Phase 4c sign-off (Epic K): assignment SIGNED_OFF,
 * experience record appended, crew member flipped to EX_HAND, and a SIGN_OFF
 * backfill requisition auto-raised — on the same CrewMember entity.
 */
import { vi, describe, it, expect, beforeAll, afterAll, afterEach } from "vitest";

vi.mock("@/auth", () => ({ auth: vi.fn() }));
vi.mock("next/cache", () => ({ revalidatePath: vi.fn() }));
vi.mock("@/lib/feature-flags", () => ({ CREWING_ENABLED: true, INVENTORY_ENABLED: true }));
vi.mock("@/lib/notifier", () => ({ notify: vi.fn(), notifyCrew: vi.fn() }));

import { auth } from "@/auth";
import { db } from "@/lib/db";
import { signOffCrew } from "@/app/(portal)/crewing/crew/actions";
import { makeSession, getSeedUser } from "./helpers";
import type { Role } from "@prisma/client";

let managerId: string;
let accountsId: string;
let siteStaffId: string;
let rankId: string;
let vesselId: string;

const SS_EMAIL = "sitestaff@itso.local";
const as = (userId: string, role: Role) =>
  vi.mocked(auth as unknown as () => Promise<unknown>).mockResolvedValue(makeSession(userId, role));

async function activeCrew() {
  const c = await db.crewMember.create({ data: { name: "On Tour", status: "EMPLOYEE", type: "NEW", source: "CAREERS", employeeId: `CRW-S${Date.now() % 100000}`, currentRankId: rankId } });
  const a = await db.crewAssignment.create({ data: { status: "ACTIVE", signOnDate: new Date("2026-01-01"), crewMemberId: c.id, rankId, vesselId } });
  return { crewId: c.id, assignmentId: a.id };
}

beforeAll(async () => {
  managerId = (await getSeedUser("manager@pelagia.local")).id;
  accountsId = (await getSeedUser("accounts@pelagia.local")).id;
  const ss = await db.user.upsert({ where: { email: SS_EMAIL }, update: { role: "SITE_STAFF", isActive: true }, create: { employeeId: "ITSO-SS", email: SS_EMAIL, name: "SS SO", role: "SITE_STAFF" } });
  siteStaffId = ss.id;
  rankId = (await db.rank.findFirstOrThrow()).id;
  vesselId = (await db.vessel.findFirstOrThrow()).id;
});

afterEach(async () => {
  await db.crewAction.deleteMany({});
  await db.experienceRecord.deleteMany({});
  await db.crewAssignment.deleteMany({});
  await db.requisition.deleteMany({});
  await db.crewMember.deleteMany({});
  vi.clearAllMocks();
});

afterAll(async () => {
  await db.user.deleteMany({ where: { email: SS_EMAIL } });
});

describe("signOffCrew", () => {
  it("signs off → SIGNED_OFF + experience record + EX_HAND + backfill requisition", async () => {
    const { crewId, assignmentId } = await activeCrew();
    as(siteStaffId, "SITE_STAFF");
    const res = await signOffCrew(assignmentId, "2026-07-01", "End of contract");
    expect("ok" in res && res.ok).toBe(true);

    const a = await db.crewAssignment.findUniqueOrThrow({ where: { id: assignmentId } });
    expect(a.status).toBe("SIGNED_OFF");
    expect(a.signOffDate).not.toBeNull();

    // Same entity flipped back to the candidate pool as an ex-hand.
    const c = await db.crewMember.findUniqueOrThrow({ where: { id: crewId } });
    expect(c.status).toBe("EX_HAND");
    expect(c.type).toBe("EX_HAND");
    expect(c.employeeId).not.toBeNull(); // history retained

    const exp = await db.experienceRecord.findFirstOrThrow({ where: { crewMemberId: crewId } });
    expect(exp.source).toBe("internal");
    expect(exp.rankId).toBe(rankId);
    expect(exp.durationMonths).toBe(6); // Jan→Jul

    const req = await db.requisition.findFirstOrThrow({ where: { autoRaised: true } });
    expect(req.reason).toBe("SIGN_OFF");
    expect(req.rankId).toBe(rankId);
    expect(req.vesselId).toBe(vesselId);
  });

  it("refuses to sign off an already signed-off assignment", async () => {
    const { assignmentId } = await activeCrew();
    as(managerId, "MANAGER");
    await signOffCrew(assignmentId, "2026-07-01");
    const res = await signOffCrew(assignmentId, "2026-08-01");
    expect("error" in res).toBe(true);
  });

  it("is rejected for a role without sign_off_crew (accounts)", async () => {
    const { assignmentId } = await activeCrew();
    as(accountsId, "ACCOUNTS");
    expect(await signOffCrew(assignmentId, "2026-07-01")).toEqual({ error: "Unauthorized" });
    expect(await db.requisition.count({ where: { autoRaised: true } })).toBe(0);
  });
});