jest.mock("../db/pool", () => ({
  query: jest.fn(),
}));

const pool = require("../db/pool");
const AvailableItems = require("../models/available-item.model");

describe("available-item.model", () => {
  beforeEach(() => {
    pool.query.mockReset();
  });

  test("creates an available item using an existing catalog item", async () => {
    pool.query
      .mockResolvedValueOnce({ rowCount: 1, rows: [{ id: 55, name: "milk" }] })
      .mockResolvedValueOnce({ rowCount: 1, rows: [] })
      .mockResolvedValueOnce({
        rowCount: 1,
        rows: [
          {
            item_id: 55,
            item_name: "milk",
            item_image: null,
            image_mime_type: null,
            item_type: "dairy",
            item_group: "Milk",
            zone: "Dairy & Refrigerated",
          },
        ],
      });

    const result = await AvailableItems.createAvailableItem(1, 2, "Milk");

    expect(result).toEqual(
      expect.objectContaining({
        item_id: 55,
        item_name: "milk",
      })
    );
    expect(pool.query).toHaveBeenNthCalledWith(
      1,
      "SELECT id, name FROM items WHERE name ILIKE $1",
      ["milk"]
    );
    expect(pool.query).toHaveBeenNthCalledWith(
      2,
      expect.stringContaining("INSERT INTO household_store_available_items"),
      [1, 2, 55, null, null]
    );
  });

  test("creates an available item and inserts a new master item when needed", async () => {
    pool.query
      .mockResolvedValueOnce({ rowCount: 0, rows: [] })
      .mockResolvedValueOnce({ rowCount: 1, rows: [{ id: 77, name: "granola" }] })
      .mockResolvedValueOnce({ rowCount: 1, rows: [] })
      .mockResolvedValueOnce({
        rowCount: 1,
        rows: [{ item_id: 77, item_name: "granola" }],
      });

    const result = await AvailableItems.createAvailableItem(1, 2, "Granola");

    expect(result).toEqual(expect.objectContaining({ item_id: 77, item_name: "granola" }));
    expect(pool.query).toHaveBeenNthCalledWith(
      2,
      "INSERT INTO items (name) VALUES ($1) RETURNING id, name",
      ["granola"]
    );
  });

  test("updates available item images and returns refreshed data", async () => {
    const imageBuffer = Buffer.from("abc");
    pool.query
      .mockResolvedValueOnce({ rowCount: 1, rows: [{ item_id: 55 }] })
      .mockResolvedValueOnce({
        rowCount: 1,
        rows: [{ item_id: 55, item_name: "milk", item_image: "YWJj", image_mime_type: "image/jpeg" }],
      });

    const result = await AvailableItems.updateAvailableItem(1, 2, 55, {
      imageBuffer,
      mimeType: "image/jpeg",
    });

    expect(result).toEqual(expect.objectContaining({ item_id: 55, image_mime_type: "image/jpeg" }));
    expect(pool.query).toHaveBeenNthCalledWith(
      1,
      expect.stringContaining("UPDATE household_store_available_items"),
      [1, 2, 55, imageBuffer, "image/jpeg"]
    );
  });

  test("imports current household list items idempotently", async () => {
    pool.query.mockResolvedValueOnce({
      rowCount: 2,
      rows: [{ item_id: 10 }, { item_id: 11 }],
    });

    const result = await AvailableItems.importCurrentListItems(1, 2);

    expect(result).toBe(2);
    expect(pool.query).toHaveBeenCalledWith(
      expect.stringContaining("INSERT INTO household_store_available_items"),
      [1, 2]
    );
  });

  test("deletes only the catalog entry", async () => {
    pool.query.mockResolvedValueOnce({ rowCount: 1, rows: [] });

    const deleted = await AvailableItems.deleteAvailableItem(1, 2, 55);

    expect(deleted).toBe(true);
    expect(pool.query).toHaveBeenCalledWith(
      expect.stringContaining("DELETE FROM household_store_available_items"),
      [1, 2, 55]
    );
  });
});