const {
  summarizeBudgetLedgerByPool,
  buildPurchaseBudgetValidationError,
} = require("../../../src/services/purchaseBudget");

describe("purchaseBudget service", () => {
  it("summarizes reserve confirm release by pool", () => {
    expect(
      summarizeBudgetLedgerByPool([
        { budget_pool_id: "pool-1", kind: "reserve", amount: "120.00" },
        { budget_pool_id: "pool-1", kind: "confirm", amount: "120.00" },
        { budget_pool_id: "pool-1", kind: "release", amount: "20.00" },
        { budget_pool_id: "pool-2", kind: "reserve", amount: "80.00" },
      ]),
    ).toEqual([
      {
        budgetPoolId: "pool-1",
        reserve: 120,
        confirm: 120,
        release: 20,
        outstanding: 100,
        confirmPending: 0,
      },
      {
        budgetPoolId: "pool-2",
        reserve: 80,
        confirm: 0,
        release: 0,
        outstanding: 80,
        confirmPending: 80,
      },
    ]);
  });

  it("builds VALID_001 validation error", () => {
    const error = buildPurchaseBudgetValidationError({ budget: "reserve_already_exists" });
    expect(error.code).toBe("VALID_001");
    expect(error.statusCode).toBe(409);
    expect(error.details).toEqual({ budget: "reserve_already_exists" });
  });
});