const Fastify = require("fastify");

const { AppError } = require("../../../src/utils/AppError");
const travelRequestsRoutes = require("../../../src/routes/travelRequests");

function buildTravelRequestRecord({
  id = "11111111-1111-4111-8111-111111111111",
  applicantId = "employee-1",
  submitterId = null,
  status = "draft",
} = {}) {
  const now = new Date("2026-03-10T00:00:00.000Z");
  return {
    id,
    request_no: status === "draft" ? null : "CL-20260310-0001",
    applicant_employee_id: applicantId,
    submitter_id: submitterId,
    department_id: "dept-1",
    legal_entity_id: "legal-1",
    cost_center_id: "cc-1",
    budget_pool_id: null,
    purpose: "上海客户拜访",
    trip_type: "domestic",
    start_date: new Date("2026-03-15T00:00:00.000Z"),
    end_date: new Date("2026-03-17T00:00:00.000Z"),
    estimated_amount: "1280.00",
    status,
    created_at: now,
    updated_at: now,
    applicant: {
      id: applicantId,
      employee_no: "E001",
      name: "张三",
    },
    submitter: submitterId
      ? {
          id: submitterId,
          employee_no: "E009",
          name: "李四",
        }
      : null,
    department: { id: "dept-1", name: "销售部" },
    legal_entity: { id: "legal-1", code: "HY", name: "海音达" },
    cost_center: { id: "cc-1", code: "CC001", name: "销售中心", legal_entity_id: "legal-1" },
    budget_pool: null,
    segments: [
      {
        id: "seg-1",
        sort_order: 1,
        segment_role: "outbound",
        transport_type: "flight",
        from_city: "深圳",
        to_city: "上海",
        depart_at: new Date("2026-03-15T01:00:00.000Z"),
        arrive_at: new Date("2026-03-15T03:30:00.000Z"),
        created_at: now,
        updated_at: now,
      },
    ],
    travel_orders: [],
    workflow_instances: [],
  };
}

function buildPrisma({ items = [], detail = null } = {}) {
  return {
    travelRequest: {
      findMany: vi.fn().mockResolvedValue(items),
      count: vi.fn().mockResolvedValue(items.length),
      findUnique: vi.fn().mockResolvedValue(detail),
    },
    entityRiskFlag: {
      findMany: vi.fn().mockResolvedValue([]),
    },
  };
}

async function buildApp({ employee, prisma }) {
  const app = Fastify();

  app.decorate("prisma", prisma);
  app.decorate("config", { appTimezone: "Asia/Shanghai" });
  app.decorate("authenticate", async (request) => {
    if (!request.headers.authorization) {
      throw new AppError({
        code: "AUTH_001",
        message: "未登录",
        statusCode: 401,
      });
    }
    request.employee = employee;
  });
  app.decorate("hasPermission", (actor, permissionCode) => {
    return (actor?.permissionCodes ?? []).includes("*") || (actor?.permissionCodes ?? []).includes(permissionCode);
  });
  app.decorate("requirePermission", (permissionCode) => async (request) => {
    await app.authenticate(request);
    if (!app.hasPermission(request.employee, permissionCode)) {
      throw new AppError({
        code: "PERM_001",
        message: "无权限",
        statusCode: 403,
        details: { permission: permissionCode },
      });
    }
  });

  app.setErrorHandler((error, request, reply) => {
    if (error instanceof AppError) {
      return reply.status(error.statusCode).send({
        requestId: request.id,
        error: {
          code: error.code,
          message: error.message,
          details: error.details ?? {},
        },
      });
    }

    return reply.status(500).send({
      requestId: request.id,
      error: { code: "SYS_001", message: "服务器内部错误", details: {} },
    });
  });

  await app.register(travelRequestsRoutes, { prefix: "/api" });
  return app;
}

describe("travelRequests routes", () => {
  it.each(["startDate", "endDate"])("rejects overflowing %s before the edit transaction", async (field) => {
    const prisma = { $transaction: vi.fn() };
    const app = await buildApp({ employee: { id: "employee-1", permissionCodes: ["travel.create"] }, prisma });
    try {
      const response = await app.inject({ method: "PATCH", url: "/api/travel-requests/11111111-1111-4111-8111-111111111111",
        headers: { authorization: "Bearer test" }, payload: { [field]: "2026-04-31" } });
      expect(response.statusCode).toBe(400);
      expect(response.json().error.code).toBe("VALID_001");
      expect(response.json().error.details.fieldErrors[field]).toContain("invalid_calendar_date");
      expect(prisma.$transaction).not.toHaveBeenCalled();
    } finally { await app.close(); }
  });

  it("lists only own records when actor lacks view_all", async () => {
    const prisma = buildPrisma({
      items: [buildTravelRequestRecord()],
    });
    const app = await buildApp({
      employee: { id: "employee-1", department_id: "dept-1", permissionCodes: ["travel.view_own"] },
      prisma,
    });

    const response = await app.inject({
      method: "GET",
      url: "/api/travel-requests?mine=0&page=1&pageSize=10",
      headers: { authorization: "Bearer test" },
    });

    expect(response.statusCode).toBe(200);
    expect(response.json().data).toEqual(
      expect.objectContaining({
        mine: true,
        total: 1,
      }),
    );
    expect(prisma.travelRequest.findMany).toHaveBeenCalledWith(
      expect.objectContaining({
        where: expect.objectContaining({
          OR: [
            { applicant_employee_id: "employee-1" },
            { submitter_id: "employee-1" },
          ],
        }),
      }),
    );

    await app.close();
  });

  it("allows owner to fetch detail and blocks outsiders", async () => {
    const detail = buildTravelRequestRecord();
    const ownerApp = await buildApp({
      employee: { id: "employee-1", department_id: "dept-1", permissionCodes: ["travel.view_own"] },
      prisma: buildPrisma({ detail }),
    });
    const outsiderApp = await buildApp({
      employee: { id: "employee-9", department_id: "dept-9", permissionCodes: ["travel.view_own"] },
      prisma: buildPrisma({ detail }),
    });

    const ownerResponse = await ownerApp.inject({
      method: "GET",
      url: `/api/travel-requests/${detail.id}`,
      headers: { authorization: "Bearer test" },
    });
    const outsiderResponse = await outsiderApp.inject({
      method: "GET",
      url: `/api/travel-requests/${detail.id}`,
      headers: { authorization: "Bearer test" },
    });

    expect(ownerResponse.statusCode).toBe(200);
    expect(ownerResponse.json().data).toEqual(
      expect.objectContaining({
        id: detail.id,
        purpose: detail.purpose,
        permissions: expect.objectContaining({ canEditDraft: true }),
      }),
    );
    expect(outsiderResponse.statusCode).toBe(403);
    expect(outsiderResponse.json().error.code).toBe("PERM_001");

    await ownerApp.close();
    await outsiderApp.close();
  });
});