import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest';

const applyItemUpsertMock = vi.fn();
const previewItemUpsertMock = vi.fn();
const printItemLabelMock = vi.fn();
const LABEL_DRAFT_STORAGE_KEY = 'lonc.labels.draft';

let localStorageState;
let localStorageMock;

function createWindowStorageMock(initialState = {}) {
  const state = new Map(Object.entries(initialState));
  const localStorage = {
    getItem: vi.fn((key) => (state.has(key) ? state.get(key) : null)),
    setItem: vi.fn((key, value) => {
      state.set(key, String(value));
    }),
    removeItem: vi.fn((key) => {
      state.delete(key);
    }),
  };

  vi.stubGlobal('window', { localStorage });
  return { state, localStorage };
}

function readStoredLabelDraft() {
  const raw = localStorageState.get(LABEL_DRAFT_STORAGE_KEY);
  return raw ? JSON.parse(raw) : null;
}

vi.mock('../../../src/api/stock.js', () => ({
  applyItemUpsert: (...args) => applyItemUpsertMock(...args),
  previewItemUpsert: (...args) => previewItemUpsertMock(...args),
  searchItemDefinitions: vi.fn(async () => []),
}));

vi.mock('../../../src/api/labels.js', () => ({
  previewLabel: vi.fn(async () => ({ objectUrl: 'blob:preview' })),
  printItemLabel: (...args) => printItemLabelMock(...args),
  formatPrintErrorMessage: (error) => error?.message || 'Printing failed.',
}));

vi.mock('../../../src/api/locations.js', () => ({
  fetchLocations: vi.fn(async () => ({ flat: [], tree: [] })),
}));

const { labelCreatePageData } = await import('../../../src/features/labels/label-create-page.js');

describe('label create upsert-first submit', () => {
  beforeEach(() => {
    vi.useFakeTimers();
    vi.setSystemTime(new Date('2026-04-12T12:00:00Z'));
    applyItemUpsertMock.mockReset();
    previewItemUpsertMock.mockReset();
    printItemLabelMock.mockReset();

    const storageMock = createWindowStorageMock();
    localStorageState = storageMock.state;
    localStorageMock = storageMock.localStorage;
  });

  afterEach(() => {
    vi.useRealTimers();
    vi.unstubAllGlobals();
  });

  it('defaults print checkbox to enabled', () => {
    const data = labelCreatePageData({
      isConnected: false,
      activeKitchen: { id: 1 },
      addAlert: vi.fn(),
    });
    expect(data.printLabelOnSave).toBe(true);
  });

  it('restores a fresh enveloped draft when inactivity is below 30 minutes', () => {
    localStorageState.set(
      LABEL_DRAFT_STORAGE_KEY,
      JSON.stringify({
        form: {
          name: 'Draft yogurt',
          productionDate: '2026-04-11',
          stockType: 'descriptive',
        },
        savedAt: Date.now() - (29 * 60 * 1000),
      }),
    );

    const data = labelCreatePageData({
      isConnected: false,
      activeKitchen: { id: 1 },
      addAlert: vi.fn(),
    });

    expect(data.form.name).toBe('Draft yogurt');
    expect(data.form.productionDate).toBe('2026-04-11');
    expect(data.form.stockType).toBe('descriptive');
  });

  it('drops stale enveloped drafts at 30 minutes inactivity and loads a clean form', () => {
    localStorageState.set(
      LABEL_DRAFT_STORAGE_KEY,
      JSON.stringify({
        form: {
          name: 'Old draft',
          description: 'Should be removed',
          productionDate: '2026-04-10',
          stockType: 'measured',
          quantity: '4',
          uom: 'kg',
        },
        savedAt: Date.now() - (30 * 60 * 1000),
      }),
    );

    const data = labelCreatePageData({
      isConnected: false,
      activeKitchen: { id: 1 },
      addAlert: vi.fn(),
    });

    expect(data.form.name).toBe('');
    expect(data.form.description).toBe('');
    expect(data.form.stockType).toBe('binary');
    expect(data.form.quantity).toBe('');
    expect(data.form.uom).toBe('g');
    expect(data.form.productionDate).toBe('2026-04-12');
  });

  it('keeps draft when day changes but inactivity stays below 30 minutes', () => {
    vi.setSystemTime(new Date('2026-04-12T00:10:00Z'));
    localStorageState.set(
      LABEL_DRAFT_STORAGE_KEY,
      JSON.stringify({
        form: {
          name: 'Day-changed draft',
          productionDate: '2026-04-11',
        },
        savedAt: Date.now() - (10 * 60 * 1000),
      }),
    );

    const data = labelCreatePageData({
      isConnected: false,
      activeKitchen: { id: 1 },
      addAlert: vi.fn(),
    });

    expect(data.form.name).toBe('Day-changed draft');
    expect(data.form.productionDate).toBe('2026-04-11');
  });

  it('loads legacy plain-object drafts without forcing discard', () => {
    localStorageState.set(
      LABEL_DRAFT_STORAGE_KEY,
      JSON.stringify({
        name: 'Legacy draft',
        productionDate: '2026-04-05',
      }),
    );

    const data = labelCreatePageData({
      isConnected: false,
      activeKitchen: { id: 1 },
      addAlert: vi.fn(),
    });

    expect(data.form.name).toBe('Legacy draft');
    expect(data.form.productionDate).toBe('2026-04-05');
  });

  it('writes enveloped draft payload from persist and reset save paths', () => {
    const data = labelCreatePageData({
      isConnected: false,
      activeKitchen: { id: 1 },
      addAlert: vi.fn(),
    });

    data.form = {
      ...data.form,
      name: 'Persisted entry',
      search: 'temp search value',
    };
    data.persistDraft();

    const persistedDraft = readStoredLabelDraft();
    expect(persistedDraft.savedAt).toBe(Date.now());
    expect(persistedDraft.form.name).toBe('Persisted entry');
    expect(persistedDraft.form.search).toBe('');

    vi.setSystemTime(new Date('2026-04-12T12:05:00Z'));
    data.form.name = 'Reset me';
    data.$refs = {};
    data.reset(false);

    const resetDraft = readStoredLabelDraft();
    expect(resetDraft.savedAt).toBe(Date.now());
    expect(resetDraft.form.name).toBe('');
    expect(resetDraft.form.productionDate).toBe('2026-04-12');
  });

  it('builds upsert payload with selected template uuid', () => {
    const store = {
      isConnected: false,
      activeKitchen: { id: 7 },
      addAlert: vi.fn(),
    };
    const data = labelCreatePageData(store);
    data.form = {
      ...data.form,
      itemUuidB64: 'uuid-template-1',
      name: 'Beans',
      description: 'Dry beans',
      stockType: 'measured',
      quantity: '2',
      uom: 'kg',
      level: '',
      productionDate: '2026-04-10',
      expirationDate: '2026-08-10',
      locationId: '',
      identifierCode: '12345',
    };

    const payload = data.buildUpsertPayload();

    expect(payload.uuid_b64).toBe('uuid-template-1');
    expect(payload.identifier_code).toBe('12345');
    expect(payload.item.name).toBe('Beans');
    expect(payload.item.quantity_initial).toBe(2);
  });

  it('create uses applyItemUpsert and sets operation-aware success message', async () => {
    applyItemUpsertMock.mockResolvedValueOnce({
      operation: 'update',
      item: { name: 'Rice', uuid_b64: 'uuid-rice-1' },
    });
    printItemLabelMock.mockResolvedValueOnce(null);

    const addAlert = vi.fn();
    const store = {
      isConnected: false,
      activeKitchen: { id: 3 },
      addAlert,
    };
    const data = labelCreatePageData(store);
    data.validateBeforeSubmit = () => true;
    data.form = {
      ...data.form,
      name: 'Rice',
      stockType: 'binary',
      locationId: '',
      productionDate: '2026-04-10',
      itemUuidB64: 'uuid-rice-1',
    };

    await data.create();

    expect(applyItemUpsertMock).toHaveBeenCalledTimes(1);
    expect(applyItemUpsertMock.mock.calls[0][1].uuid_b64).toBe('uuid-rice-1');
    expect(printItemLabelMock).toHaveBeenCalledWith(store, 'uuid-rice-1');
    expect(data.successMessage).toBe('Rice was updated successfully.');
    expect(addAlert).toHaveBeenCalledWith({
      type: 'success',
      message: 'Rice was updated successfully.',
    });
    const savedDraft = readStoredLabelDraft();
    expect(savedDraft).toMatchObject({
      form: {
        name: 'Rice',
      },
    });
    expect(savedDraft.savedAt).toBeTypeOf('number');
  });

  it('create shows parsed print issue warning when printing fails', async () => {
    applyItemUpsertMock.mockResolvedValueOnce({
      operation: 'create',
      item: { name: 'Beans', uuid_b64: 'uuid-beans-1' },
    });
    printItemLabelMock.mockRejectedValueOnce(new Error('Printer is unavailable.'));

    const addAlert = vi.fn();
    const store = {
      isConnected: false,
      activeKitchen: { id: 3 },
      addAlert,
    };
    const data = labelCreatePageData(store);
    data.validateBeforeSubmit = () => true;
    data.form = {
      ...data.form,
      name: 'Beans',
      stockType: 'binary',
      locationId: '',
      productionDate: '2026-04-10',
      itemUuidB64: '',
    };

    await data.create();

    expect(data.printIssue).toBe('Printer is unavailable.');
    expect(addAlert).toHaveBeenCalledWith({
      type: 'warning',
      message: 'Beans was created, but printing has an issue: Printer is unavailable.',
    });
    expect(localStorageMock.setItem).toHaveBeenCalled();
  });
});