/**
 * Våg 3.4 (DoD §56): unit tests for GET /api/orders/export — the first
 * adoption of the export kernel. Follows the suite pattern of calling the
 * route handler directly with a hand-built NextRequest and mocked auth/store.
 */
import { describe, it, expect, vi } from "vitest";
import { NextRequest } from "next/server";

vi.mock("@/src/auth/require-order-owner", () => ({
  requireOrderOwner: vi.fn().mockResolvedValue({ owner: { tenantId: "tenant-test", subject: "buyer-test" } }),
}));
vi.mock("@/lib/orders-store", () => ({
  listOwnedOrders: vi.fn().mockResolvedValue([
    { order_id: "ord_1", flow: "custom", status: "draft", deposit_ore: 5000, total_ore: 10000 },
    { order_id: 'ord,"2"', flow: "platform", status: "delivered", deposit_ore: 0, total_ore: 12345 },
  ]),
}));

import { GET as exportGET } from "@/app/api/orders/export/route";

function getReq(): NextRequest {
  return new NextRequest(new URL("/api/orders/export", "http://localhost"), { method: "GET" });
}

describe("GET /api/orders/export — CSV (våg 3.4, DoD §56)", () => {
  it("emits the documented header row and CRLF line endings", async () => {
    const r = await exportGET(getReq());
    expect(r.status).toBe(200);
    expect(r.headers.get("content-type")).toContain("text/csv");
    expect(r.headers.get("content-disposition")).toMatch(/^attachment; filename="orders-\d{4}-\d{2}-\d{2}\.csv"$/);
    const body = await r.text();
    const lines = body.split("\r\n");
    expect(lines[0]).toBe("order_id,flow,status,deposit_ore,total_ore");
    expect(lines[1]).toBe("ord_1,custom,draft,5000,10000");
  });

  it("RFC4180-quotes fields containing comma/quote (doubled quotes)", async () => {
    const r = await exportGET(getReq());
    const body = await r.text();
    expect(body).toContain('"ord,""2"""');
  });

  it("exports RAW öre — no locale formatting in the export (öre is canonical)", async () => {
    const r = await exportGET(getReq());
    const body = await r.text();
    expect(body).toContain("ord_1,custom,draft,5000,10000");
    expect(body).not.toContain("100,00");
    expect(body).not.toMatch(/\u00A0| kr/);
  });

  it("no row truncation: export is complete per DoD §56 (cap documented)", async () => {
    const r = await exportGET(getReq());
    const body = await r.text();
    const rows = body.trimEnd().split("\r\n").length - 1;
    expect(rows).toBe(2);
  });

  it("auth is fail-closed: the route delegates to requireOrderOwner (401 contract)", async () => {
    // The mocked requireOrderOwner resolves with an owner; the 401 path is the
    // auth.response passthrough asserted in tests/api/anonymous-routes-auth.
    // This test pins the wiring: the handler must return auth.response
    // verbatim when present, before any store access.
    const { requireOrderOwner } = await import("@/src/auth/require-order-owner");
    const mocked = requireOrderOwner as ReturnType<typeof vi.fn>;
    mocked.mockResolvedValueOnce({
      response: new Response(JSON.stringify({ error: { code: "unauthorized" } }), { status: 401 }),
    });
    const r = await exportGET(getReq());
    expect(r.status).toBe(401);
  });
});