import { describe, expect, it } from "vitest";
import { getStatusOwnerRole } from "../constants/deliveryWorkflow";
import { demoOrders, demoUsers } from "../data/mockAppData";
import {
  assignDriverToOrder,
  applyStatusUpdate,
  autoAssignOrders,
  buildMetrics,
  cloneOrders,
  createOrderRecord,
  filterOrdersByView,
  getKanbanDropResolution,
  getAvailableTransitions,
} from "./orderService";

describe("orderService", () => {
  it("lets manager see the whole pipeline", () => {
    const result = filterOrdersByView({
      orders: cloneOrders(demoOrders),
      currentUser: demoUsers[0],
      filters: {
        query: "",
        status: "all",
        stage: "all",
        ownerRole: "all",
        agingState: "all",
        managerId: "all",
        logisticianId: "all",
        messenger: "all",
      },
    });

    expect(result.visibleOrders).toHaveLength(demoOrders.length);
    expect(result.filteredOrders).toHaveLength(demoOrders.length);
  });

  it("shows employees all orders in their responsibility zone", () => {
    const driver = demoUsers.find((user) => user.role === "driver");
    const result = filterOrdersByView({
      orders: cloneOrders(demoOrders),
      currentUser: driver,
      filters: {
        query: "",
        status: "all",
        stage: "all",
        ownerRole: "all",
        agingState: "all",
        managerId: "all",
        logisticianId: "all",
        messenger: "all",
      },
    });

    const expectedDriverOrders = demoOrders.filter((order) => getStatusOwnerRole(order.status) === "driver");

    expect(result.visibleOrders).toHaveLength(expectedDriverOrders.length);
    expect(result.visibleOrders.every((order) => getStatusOwnerRole(order.status) === "driver")).toBe(true);
  });

  it("finds orders by customer phone, stage, owner role and aging state", () => {
    const result = filterOrdersByView({
      orders: cloneOrders(demoOrders),
      currentUser: demoUsers[0],
      filters: {
        query: "+7 978 000-12-31",
        status: "all",
        stage: "logistics",
        ownerRole: "logistician",
        agingState: "warning",
        managerId: "all",
        logisticianId: "all",
        messenger: "all",
      },
      now: "2026-03-15T12:00:00Z",
    });

    expect(result.filteredOrders).toHaveLength(1);
    expect(result.filteredOrders[0].orderNumber).toBe("CD-240031");
  });

  it("updates status and prepends history record", () => {
    const nextOrder = applyStatusUpdate(demoOrders[0], "Доставка согласована", "Ольга Синицына");

    expect(nextOrder.status).toBe("Доставка согласована");
    expect(nextOrder.history[0].action).toBe("Изменение статуса");
    expect(nextOrder.history[0].newStatus).toBe("Доставка согласована");
  });

  it("assigns a driver and records the action in history", () => {
    const nextOrder = assignDriverToOrder(demoOrders[0], "u-driver", "Ольга Синицына");

    expect(nextOrder.assignedDriverId).toBe("u-driver");
    expect(nextOrder.history[0].action).toBe("Назначение водителя");
    expect(nextOrder.history[0].userName).toBe("Ольга Синицына");
  });

  it("returns role-scoped transitions for logistics stage", () => {
    const transitions = getAvailableTransitions({
      status: "Ожидает согласования доставки",
      role: "logistician",
    });

    expect(transitions).toEqual(["Доставка согласована", "Проблема доставки", "Отменён"]);
  });

  it("lets manager move orders across the full workflow from the shared board", () => {
    const transitions = getAvailableTransitions({
      status: "Ожидает согласования доставки",
      role: "manager",
    });

    expect(transitions).toEqual(["Доставка согласована", "Проблема доставки", "Отменён"]);
  });

  it("lets logisticians hand orders off into delivery only when a driver is assigned", () => {
    const assignedOrder = {
      ...demoOrders.find((order) => order.status === "Доставка согласована"),
      assignedDriverId: "u-driver",
    };
    const blockedOrder = {
      ...assignedOrder,
      assignedDriverId: null,
    };
    const deliveryColumn = {
      key: "delivery",
      title: "Доставка",
      statuses: ["Назначен водитель", "Загружен", "В пути"],
    };

    expect(
      getKanbanDropResolution({
        order: assignedOrder,
        column: deliveryColumn,
        role: "logistician",
      }),
    ).toMatchObject({ nextStatus: "Назначен водитель" });

    expect(
      getKanbanDropResolution({
        order: blockedOrder,
        column: deliveryColumn,
        role: "logistician",
      }),
    ).toMatchObject({
      nextStatus: null,
      reason: "Сначала назначьте водителя, потом заказ можно передать в доставку.",
    });
  });

  it("creates a new order draft with assigned logistician", () => {
    const logisticians = demoUsers.filter((user) => user.role === "logistician");
    const order = createOrderRecord({
      actorName: "Анна Мельник",
      availableLogisticians: logisticians,
      payload: {
        orderNumber: "CD-900000",
        customerName: "Тест Клиент",
        customerPhone: "+7 978 777-00-00",
        customerAddress: "Симферополь",
        messenger: "СМС",
        managerId: "u-manager",
        deliveryDate: "2026-03-15",
        items: "Тестовая позиция",
        comments: "важно",
        tags: "новый",
      },
    });

    expect(order.status).toBe("Новый");
    expect(order.deliveryAgreementStatus).toBe("Не начато");
    expect(order.logisticianIds).toHaveLength(1);
    expect(order.history[0].action).toBe("Создание заказа");
  });

  it("auto distributes orders across logisticians", () => {
    const logisticians = demoUsers.filter((user) => user.role === "logistician");
    const assigned = autoAssignOrders(cloneOrders(demoOrders), logisticians);

    expect(assigned[0].logisticianIds[0]).toBe(logisticians[0].id);
    expect(assigned[1].logisticianIds[0]).toBe(logisticians[1].id);
  });

  it("builds dashboard metrics", () => {
    const metrics = buildMetrics(demoOrders);

    expect(metrics.total).toBe(demoOrders.length);
    expect(metrics.readyToShip).toBe(demoOrders.filter((order) => order.status === "Готов к отгрузке").length);
    expect(metrics.awaitingDeliveryCoordination).toBe(
      demoOrders.filter((order) => order.status === "Ожидает согласования доставки").length,
    );
    expect(metrics.exceptions).toBe(demoOrders.filter((order) => order.status === "Проблема доставки").length);
  });

  it("ships with an expanded demo dataset across the workflow", () => {
    expect(demoOrders.length).toBeGreaterThanOrEqual(32);
    expect(new Set(demoOrders.map((order) => order.status)).size).toBeGreaterThanOrEqual(10);
    expect(
      demoOrders.some((order) => order.status === "Доставка согласована" && order.assignedDriverId),
    ).toBe(true);
    expect(
      demoOrders.every((order) => Number.isFinite(new Date(order.createdAt).getTime())),
    ).toBe(true);
    expect(
      demoOrders.every((order) => Number.isFinite(new Date(order.scheduledDelivery).getTime())),
    ).toBe(true);
  });
});