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

import { useLicenseStore } from './licenseStore';


function mockElectronAPI(overrides: Record<string, any> = {}) {
  (window as any).electronAPI = {
    getAppStatus: vi.fn().mockResolvedValue({ tag: 'Expired' }),
    activateLicense: vi.fn().mockResolvedValue(null),
    deactivateLicense: vi.fn().mockResolvedValue(undefined),
    hasLicenseFeature: vi.fn().mockResolvedValue(false),
    ...overrides,
  };
}

describe('licenseStore', () => {
  beforeEach(() => {
    mockElectronAPI();
    useLicenseStore.setState({ status: null, isLoaded: false, canEdit: true, canUseAI: false, showDialog: false });
  });

  describe('canEdit', () => {
    test('is true for Licensed status', async () => {
      mockElectronAPI({
        getAppStatus: vi.fn().mockResolvedValue({ tag: 'Licensed', license: { license_id: 'x', tier: 'pro' } }),
      });
      await useLicenseStore.getState().checkStatus();
      expect(useLicenseStore.getState().canEdit).toBe(true);
    });

    test('is true for Trial status', async () => {
      mockElectronAPI({
        getAppStatus: vi.fn().mockResolvedValue({ tag: 'Trial', days_remaining: 20, started_at: Date.now() }),
      });
      await useLicenseStore.getState().checkStatus();
      expect(useLicenseStore.getState().canEdit).toBe(true);
    });

    test('is false for Expired status', async () => {
      mockElectronAPI({
        getAppStatus: vi.fn().mockResolvedValue({ tag: 'Expired' }),
      });
      await useLicenseStore.getState().checkStatus();
      expect(useLicenseStore.getState().canEdit).toBe(false);
    });

    test('is false when status is null', () => {
      useLicenseStore.setState({ status: null, canEdit: true, canUseAI: false });
      useLicenseStore.getState().setStatus(null);
      expect(useLicenseStore.getState().canEdit).toBe(false);
    });

    test('is true for Licensed status', () => {
      useLicenseStore.getState().setStatus({ tag: 'Licensed', license: { license_id: 'x', tier: 'pro', customer_email: 'a@b.com', expires_at: 9999999999, features: [], issued_at: 1, max_activations: 1 } });
      expect(useLicenseStore.getState().canEdit).toBe(true);
      expect(useLicenseStore.getState().canUseAI).toBe(true);
    });

    test('is false for Trial status', () => {
      useLicenseStore.getState().setStatus({ tag: 'Trial', days_remaining: 5, started_at: Date.now() });
      expect(useLicenseStore.getState().canEdit).toBe(true);
      expect(useLicenseStore.getState().canUseAI).toBe(false);
    });

    test('is false for Expired status', () => {
      useLicenseStore.getState().setStatus({ tag: 'Expired' });
      expect(useLicenseStore.getState().canEdit).toBe(false);
      expect(useLicenseStore.getState().canUseAI).toBe(false);
    });
  });

  describe('checkStatus', () => {
    test('sets status to Licensed when backend returns Licensed', async () => {
      const license = { license_id: 'l1', tier: 'pro', customer_email: 'a@b.com', expires_at: 9999999999, features: [], issued_at: 1, max_activations: 1 };
      mockElectronAPI({ getAppStatus: vi.fn().mockResolvedValue({ tag: 'Licensed', license }) });
      await useLicenseStore.getState().checkStatus();
      expect(useLicenseStore.getState().status?.tag).toBe('Licensed');
    });

    test('sets status to Trial when backend returns Trial', async () => {
      mockElectronAPI({ getAppStatus: vi.fn().mockResolvedValue({ tag: 'Trial', days_remaining: 15, started_at: Date.now() }) });
      await useLicenseStore.getState().checkStatus();
      expect(useLicenseStore.getState().status?.tag).toBe('Trial');
    });

    test('sets status to Expired when backend returns Expired', async () => {
      mockElectronAPI({ getAppStatus: vi.fn().mockResolvedValue({ tag: 'Expired' }) });
      await useLicenseStore.getState().checkStatus();
      expect(useLicenseStore.getState().status?.tag).toBe('Expired');
    });

    test('handles API error gracefully', async () => {
      mockElectronAPI({ getAppStatus: vi.fn().mockRejectedValue(new Error('network error')) });
      await useLicenseStore.getState().checkStatus();
      expect(useLicenseStore.getState().status?.tag).toBe('Expired');
      expect(useLicenseStore.getState().canEdit).toBe(false);
      expect(useLicenseStore.getState().canUseAI).toBe(false);
    });

    test('handles missing electronAPI', async () => {
      delete (window as any).electronAPI;
      await useLicenseStore.getState().checkStatus();
      expect(useLicenseStore.getState().status?.tag).toBe('Expired');
      expect(useLicenseStore.getState().canEdit).toBe(false);
      expect(useLicenseStore.getState().canUseAI).toBe(false);
    });

    test('sets isLoaded to true after check', async () => {
      await useLicenseStore.getState().checkStatus();
      expect(useLicenseStore.getState().isLoaded).toBe(true);
    });
  });

  describe('activateLicense', () => {
    test('sets Licensed on valid key', async () => {
      const license = { license_id: 'l2', tier: 'pro', customer_email: 'x@y.com', expires_at: 9999999999, features: ['bg_removal'], issued_at: 1, max_activations: 1 };
      mockElectronAPI({ activateLicense: vi.fn().mockResolvedValue(license) });
      const result = await useLicenseStore.getState().activateLicense('talkedit_v1_validKey');
      expect(result).toBe(true);
      expect(useLicenseStore.getState().status?.tag).toBe('Licensed');
      expect(useLicenseStore.getState().canEdit).toBe(true);
      expect(useLicenseStore.getState().canUseAI).toBe(true);
    });

    test('returns false on invalid key', async () => {
      mockElectronAPI({ activateLicense: vi.fn().mockResolvedValue(null) });
      const result = await useLicenseStore.getState().activateLicense('invalid-key');
      expect(result).toBe(false);
    });

    test('returns false on API error', async () => {
      mockElectronAPI({ activateLicense: vi.fn().mockRejectedValue(new Error('bad key')) });
      const result = await useLicenseStore.getState().activateLicense('bad-key');
      expect(result).toBe(false);
    });

    test('closes dialog on success', async () => {
      useLicenseStore.setState({ showDialog: true });
      const license = { license_id: 'l3', tier: 'business', customer_email: 'z@z.com', expires_at: 9999999999, features: [], issued_at: 1, max_activations: 5 };
      mockElectronAPI({ activateLicense: vi.fn().mockResolvedValue(license) });
      await useLicenseStore.getState().activateLicense('talkedit_v1_key');
      expect(useLicenseStore.getState().showDialog).toBe(false);
    });
  });

  describe('deactivateLicense', () => {
    test('sets Expired when trial is over', async () => {
      mockElectronAPI({
        deactivateLicense: vi.fn().mockResolvedValue(undefined),
        getAppStatus: vi.fn().mockResolvedValue({ tag: 'Expired' }),
      });
      await useLicenseStore.getState().deactivateLicense();
      expect(useLicenseStore.getState().status?.tag).toBe('Expired');
      expect(useLicenseStore.getState().canEdit).toBe(false);
      expect(useLicenseStore.getState().canUseAI).toBe(false);
    });

    test('restores Trial when trial is still valid', async () => {
      mockElectronAPI({
        deactivateLicense: vi.fn().mockResolvedValue(undefined),
        getAppStatus: vi.fn().mockResolvedValue({ tag: 'Trial', days_remaining: 5, started_at: Date.now() }),
      });
      await useLicenseStore.getState().deactivateLicense();
      expect(useLicenseStore.getState().status?.tag).toBe('Trial');
      expect(useLicenseStore.getState().canEdit).toBe(true);
      expect(useLicenseStore.getState().canUseAI).toBe(false);
    });

    test('handles API error', async () => {
      mockElectronAPI({ deactivateLicense: vi.fn().mockRejectedValue(new Error('fail')) });
      useLicenseStore.setState({ status: { tag: 'Licensed', license: {} as any }, canEdit: true, canUseAI: true });
      await useLicenseStore.getState().deactivateLicense();
      expect(useLicenseStore.getState().status?.tag).toBe('Expired');
      expect(useLicenseStore.getState().canEdit).toBe(false);
      expect(useLicenseStore.getState().canUseAI).toBe(false);
    });
  });

  describe('hasFeature', () => {
    test('returns true when feature exists', async () => {
      mockElectronAPI({ hasLicenseFeature: vi.fn().mockResolvedValue(true) });
      const result = await useLicenseStore.getState().hasFeature('bg_removal');
      expect(result).toBe(true);
    });

    test('returns false when feature missing', async () => {
      mockElectronAPI({ hasLicenseFeature: vi.fn().mockResolvedValue(false) });
      const result = await useLicenseStore.getState().hasFeature('nonexistent');
      expect(result).toBe(false);
    });

    test('returns false on API error', async () => {
      mockElectronAPI({ hasLicenseFeature: vi.fn().mockRejectedValue(new Error('fail')) });
      const result = await useLicenseStore.getState().hasFeature('bg_removal');
      expect(result).toBe(false);
    });
  });

  describe('setShowDialog', () => {
    test('toggles dialog', () => {
      useLicenseStore.getState().setShowDialog(true);
      expect(useLicenseStore.getState().showDialog).toBe(true);
      useLicenseStore.getState().setShowDialog(false);
      expect(useLicenseStore.getState().showDialog).toBe(false);
    });
  });
});