const Fastify = require("fastify");

const { AppError } = require("../../../src/utils/AppError");
const travelAuthorizationsRoutes = require("../../../src/routes/travelAuthorizations");

function buildAuthorizationRecord(overrides = {}) {
  const now = new Date("2026-03-10T00:00:00.000Z");
  return {
    id: "auth-1",
    source: "corp-card",
    external_auth_no: "AUTH-001",
    employee_id: "employee-1",
    department_id: "dept-1",
    travel_request_id: "11111111-1111-4111-8111-111111111111",
    budget_pool_id: "pool-1",
    legal_entity_id: "legal-1",
    cost_center_id: "cc-1",
    authorized_amount: "1000.00",
    settled_amount: "0.00",
    reversed_amount: "0.00",
    currency: "CNY",
    occurred_at: now,
    expires_at: null,
    status: "authorized",
    created_at: now,
    updated_at: now,
    ...overrides,
  };
}

function buildPrisma({ employees = [], travelRequests = [], existing = null, existingLedger = [] } = {}) {
  const prisma = {
    $queryRaw: vi.fn().mockResolvedValue([]),
    employee: {
      findMany: vi.fn().mockResolvedValue(employees),
    },
    travelRequest: {
      findMany: vi.fn().mockResolvedValue(travelRequests),
    },
    cardAuthorization: {
      findUnique: vi.fn().mockResolvedValue(existing),
      findMany: vi.fn().mockResolvedValue(existing ? [existing] : []),
      count: vi.fn().mockResolvedValue(existing ? 1 : 0),
      upsert: vi.fn().mockImplementation(async ({ create }) => buildAuthorizationRecord({
        source: create.source,
        external_auth_no: create.external_auth_no,
        employee_id: create.employee_id,
        department_id: create.department_id,
        travel_request_id: create.travel_request_id,
        budget_pool_id: create.budget_pool_id,
        legal_entity_id: create.legal_entity_id,
        cost_center_id: create.cost_center_id,
        authorized_amount: create.authorized_amount,
        settled_amount: create.settled_amount,
        reversed_amount: create.reversed_amount,
        currency: create.currency,
        occurred_at: create.occurred_at,
        expires_at: create.expires_at,
        status: create.status,
      })),
    },
    budgetLedgerEntry: {
      findMany: vi.fn().mockResolvedValue(existingLedger),
      create: vi.fn().mockResolvedValue({ id: "ledger-1" }),
    },
    budgetPool: {
      findUnique: vi.fn().mockResolvedValue({ id: "pool-1", used_amount: "0.00" }),
      update: vi.fn().mockResolvedValue({ id: "pool-1" }),
    },
    auditLog: {
      create: vi.fn().mockResolvedValue({ id: "audit-1" }),
    },
    $transaction: vi.fn().mockImplementation(async (callback) => callback(prisma)),
  };

  return prisma;
}

async function buildApp({ prisma, permissionCodes = ["integration.manage", "travel.payment.manage"] }) {
  const app = Fastify();

  app.decorate("prisma", prisma);
  app.decorate("config", { travelSyncEnabled: true });
  app.decorate("authenticate", async (request) => {
    if (!request.headers.authorization) {
      throw new AppError({ code: "AUTH_001", message: "未登录", statusCode: 401 });
    }
    request.employee = { id: "actor-1", permissionCodes };
  });
  app.decorate("hasPermission", (employee, permissionCode) => (employee?.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 });
    }
  });

  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(travelAuthorizationsRoutes, { prefix: "/api" });
  return app;
}

describe("travelAuthorizations routes", () => {
  it("imports authorizations on happy path", async () => {
    const prisma = buildPrisma({
      employees: [{ id: "employee-1", department_id: "dept-1" }],
      travelRequests: [{
        id: "11111111-1111-4111-8111-111111111111",
        applicant_employee_id: "employee-1",
        department_id: "dept-1",
        budget_pool_id: "pool-1",
        legal_entity_id: "legal-1",
        cost_center_id: "cc-1",
      }],
    });
    const app = await buildApp({ prisma, permissionCodes: ["integration.manage"] });

    const response = await app.inject({
      method: "POST",
      url: "/api/travel/authorizations/import",
      headers: { authorization: "Bearer test" },
      payload: {
        authorizations: [{
          source: "corp-card",
          externalAuthNo: "AUTH-001",
          employeeId: "employee-1",
          travelRequestId: "11111111-1111-4111-8111-111111111111",
          authorizedAmount: "1000.00",
        }],
      },
    });

    expect(response.statusCode).toBe(200);
    expect(response.json().data).toEqual(expect.objectContaining({ imported: 1, authorizedCount: 1 }));

    await app.close();
  });

  it("treats duplicate import as idempotent", async () => {
    const existing = buildAuthorizationRecord();
    const prisma = buildPrisma({
      employees: [{ id: "employee-1", department_id: "dept-1" }],
      travelRequests: [{
        id: "11111111-1111-4111-8111-111111111111",
        applicant_employee_id: "employee-1",
        department_id: "dept-1",
        budget_pool_id: "pool-1",
        legal_entity_id: "legal-1",
        cost_center_id: "cc-1",
      }],
      existing,
      existingLedger: [{
        id: "ledger-1",
        budget_pool_id: "pool-1",
        entity_type: "card_authorization",
        entity_id: existing.id,
        kind: "authorize",
        amount: "1000.00",
        created_at: new Date("2026-03-10T00:00:00.000Z"),
      }],
    });
    const app = await buildApp({ prisma, permissionCodes: ["integration.manage"] });

    const response = await app.inject({
      method: "POST",
      url: "/api/travel/authorizations/import",
      headers: { authorization: "Bearer test" },
      payload: {
        authorizations: [{
          source: "corp-card",
          externalAuthNo: "AUTH-001",
          employeeId: "employee-1",
          travelRequestId: "11111111-1111-4111-8111-111111111111",
          authorizedAmount: "1000.00",
        }],
      },
    });

    expect(response.statusCode).toBe(200);
    expect(response.json().data).toEqual(expect.objectContaining({ imported: 1, authorizedCount: 0 }));

    await app.close();
  });

  it("skips rows when request missing", async () => {
    const prisma = buildPrisma({
      employees: [{ id: "employee-1", department_id: "dept-1" }],
      travelRequests: [],
    });
    const app = await buildApp({ prisma, permissionCodes: ["integration.manage"] });

    const response = await app.inject({
      method: "POST",
      url: "/api/travel/authorizations/import",
      headers: { authorization: "Bearer test" },
      payload: {
        authorizations: [{
          source: "corp-card",
          externalAuthNo: "AUTH-404",
          employeeId: "employee-1",
          travelRequestId: "11111111-1111-4111-8111-111111111111",
          authorizedAmount: "1000.00",
        }],
      },
    });

    expect(response.statusCode).toBe(200);
    expect(response.json().data.skipped).toEqual([
      expect.objectContaining({ reason: "travel_request_not_found" }),
    ]);

    await app.close();
  });

  it("skips rows when request employee mismatches", async () => {
    const prisma = buildPrisma({
      employees: [{ id: "employee-1", department_id: "dept-1" }],
      travelRequests: [{
        id: "11111111-1111-4111-8111-111111111111",
        applicant_employee_id: "employee-9",
        department_id: "dept-1",
        budget_pool_id: "pool-1",
        legal_entity_id: "legal-1",
        cost_center_id: "cc-1",
      }],
    });
    const app = await buildApp({ prisma, permissionCodes: ["integration.manage"] });

    const response = await app.inject({
      method: "POST",
      url: "/api/travel/authorizations/import",
      headers: { authorization: "Bearer test" },
      payload: {
        authorizations: [{
          source: "corp-card",
          externalAuthNo: "AUTH-002",
          employeeId: "employee-1",
          travelRequestId: "11111111-1111-4111-8111-111111111111",
          authorizedAmount: "1000.00",
        }],
      },
    });

    expect(response.statusCode).toBe(200);
    expect(response.json().data.skipped).toEqual([
      expect.objectContaining({ reason: "travel_request_employee_mismatch" }),
    ]);

    await app.close();
  });
});