import { describe, expect, it } from "vitest";
import { getInvitationReferenceLabel } from "../components/client/invitationReference";
import {
  buildDeliveryConfirmationPayload,
  buildSelectedSlotFromInvitation,
  getClientDeliveryHeroDescription,
  groupSlotsFromInvitation,
} from "./ClientDeliveryPage";

describe("ClientDeliveryPage helpers", () => {
  it("maps invitation slots in YYYY-MM-DD format to UI slots", () => {
    expect(
      groupSlotsFromInvitation({
        availableSlots: [
          "2026-04-15, До обеда",
          "2026-04-15, После обеда",
        ],
      }, new Date("2026-04-14T09:00:00Z")),
    ).toEqual([
      {
        id: "slot-0-2026-04-15, До обеда",
        date: "2026-04-15",
        time: "До обеда",
      },
      {
        id: "slot-1-2026-04-15, После обеда",
        date: "2026-04-15",
        time: "После обеда",
      },
    ]);
  });

  it("builds confirmation payload from the selected slot date and time", () => {
    expect(
      buildDeliveryConfirmationPayload({
        slot: {
          id: "slot-1",
          date: "2026-04-16",
          time: "После обеда",
        },
        invitation: {
          deliveryDate: "2026-04-15",
        },
        searchDate: "2026-04-14",
      }),
    ).toEqual({
      deliveryType: "delivery",
      deliveryDate: "2026-04-16",
      deliveryTime: "После обеда",
    });
  });

  it("keeps the explicit slot dates when invitation already has a delivery date", () => {
    expect(
      groupSlotsFromInvitation({
        deliveryDate: "2026-04-14",
        deliveryTime: "До обеда",
        availableSlots: [
          "2026-04-14, До обеда",
          "2026-04-14, После обеда",
          "2026-04-15, До обеда",
          "2026-04-15, После обеда",
        ],
      }, new Date("2026-04-13T09:00:00Z")),
    ).toEqual([
      {
        id: "slot-0-2026-04-14, До обеда",
        date: "2026-04-14",
        time: "До обеда",
      },
      {
        id: "slot-1-2026-04-14, После обеда",
        date: "2026-04-14",
        time: "После обеда",
      },
      {
        id: "slot-2-2026-04-15, До обеда",
        date: "2026-04-15",
        time: "До обеда",
      },
      {
        id: "slot-3-2026-04-15, После обеда",
        date: "2026-04-15",
        time: "После обеда",
      },
    ]);
  });

  it("builds a selected slot from invitation data", () => {
    expect(
      buildSelectedSlotFromInvitation(
        {
          deliveryDate: "2026-04-15",
          deliveryTime: "После обеда",
        },
        [
          {
            id: "slot-1",
            date: "2026-04-15",
            time: "После обеда",
          },
        ],
      ),
    ).toEqual({
      id: "slot-1",
      date: "2026-04-15",
      time: "После обеда",
    });
  });

  it("ignores malformed slots and keeps object-based slots usable", () => {
    expect(
      groupSlotsFromInvitation({
        deliveryDate: "2026-04-15",
        availableSlots: [
          null,
          { id: "slot-object", date: "2026-04-15", time: "Первая половина дня" },
          42,
        ],
      }, new Date("2026-04-14T09:00:00Z")),
    ).toEqual([
      {
        id: "slot-object",
        date: "2026-04-15",
        time: "Первая половина дня",
      },
    ]);
  });

  it("keeps only tomorrow and the day after tomorrow", () => {
    expect(
      groupSlotsFromInvitation(
        {
          availableSlots: [
            "2026-04-15, Первая половина дня",
            "2026-04-15, Вторая половина дня",
            "2026-04-16, Первая половина дня",
            "2026-04-16, Вторая половина дня",
            "2026-04-17, Первая половина дня",
            "2026-04-17, Вторая половина дня",
          ],
        },
        new Date("2026-04-14T09:00:00Z"),
      ),
    ).toEqual([
      {
        id: "slot-0-2026-04-15, Первая половина дня",
        date: "2026-04-15",
        time: "Первая половина дня",
      },
      {
        id: "slot-1-2026-04-15, Вторая половина дня",
        date: "2026-04-15",
        time: "Вторая половина дня",
      },
      {
        id: "slot-2-2026-04-16, Первая половина дня",
        date: "2026-04-16",
        time: "Первая половина дня",
      },
      {
        id: "slot-3-2026-04-16, Вторая половина дня",
        date: "2026-04-16",
        time: "Вторая половина дня",
      },
    ]);
  });

  it("prefers the invoice number from order items over the customer name", () => {
    expect(
      getInvitationReferenceLabel({
        orderNumber: "9787464846|04.05.26",
        customerName: "Конаков Сергей Алексеевич (ДАРТС)",
        orderItems: [
          { name: "СФ Т\\ЕА-28687", quantity: "" },
          { name: "СФ Т\\ЕА-28700", quantity: "" },
        ],
      }),
    ).toBe("Счета: СФ Т\\ЕА-28687, СФ Т\\ЕА-28700");
  });

  it("hides the hero helper text after the client saves the choice", () => {
    expect(getClientDeliveryHeroDescription(true, true)).toBe("");
    expect(getClientDeliveryHeroDescription(true, false)).toBe(
      "Вам предложены варианты доставки. Выберите удобную дату и время.",
    );
    expect(getClientDeliveryHeroDescription(false, false)).toBe(
      "По этому заказу согласование доставки завершено или передано логисту.",
    );
  });

  it("skips Sunday when generating fallback delivery slots from Friday", () => {
    // 2026-04-17 is Friday → next workday = Saturday 18, then Monday 20 (skip Sunday 19)
    const slots = groupSlotsFromInvitation(
      { availableSlots: [], deliveryDate: null },
      new Date("2026-04-17T09:00:00Z"),
    );
    const dates = [...new Set(slots.map((s) => s.date))];
    expect(dates).not.toContain("2026-04-19"); // Sunday
    expect(dates).toContain("2026-04-18"); // Saturday
    expect(dates).toContain("2026-04-20"); // Monday
  });

  it("skips Sunday when generating fallback delivery slots from Saturday", () => {
    // 2026-04-18 is Saturday → next workday = Monday 20, then Tuesday 21
    const slots = groupSlotsFromInvitation(
      { availableSlots: [], deliveryDate: null },
      new Date("2026-04-18T09:00:00Z"),
    );
    const dates = [...new Set(slots.map((s) => s.date))];
    expect(dates).not.toContain("2026-04-19"); // Sunday
    expect(dates).toContain("2026-04-20"); // Monday
    expect(dates).toContain("2026-04-21"); // Tuesday
  });
});