/**
 * KYC Application Component Tests
 * Based on pallet-identity-kyc tests
 *
 * Tests cover:
 * - set_identity_works
 * - apply_for_kyc_works
 * - apply_for_kyc_fails_if_no_identity
 * - apply_for_kyc_fails_if_already_pending
 * - confirm_citizenship_works
 */

import { render, screen, fireEvent, waitFor } from '@testing-library/react';
import '@testing-library/jest-dom';
import {
  generateMockIdentity,
  generateMockKYCApplication,
} from '../../../utils/mockDataGenerators';
import {
  buildPolkadotContextState,
  mockTransactionResponse,
  expectAsyncThrow,
} from '../../../utils/testHelpers';

// Mock the KYC Application component (adjust path as needed)
// import { KYCApplicationForm } from '@/components/citizenship/KYCApplication';

describe('KYC Application Component', () => {
  let mockApi: any;
  let mockSigner: any;

  beforeEach(() => {
    // Setup mock Polkadot API
    mockApi = {
      query: {
        identityKyc: {
          identities: jest.fn(),
          applications: jest.fn(),
        },
      },
      tx: {
        identityKyc: {
          setIdentity: jest.fn(() => ({
            signAndSend: jest.fn((account, callback) => {
              callback(mockTransactionResponse(true));
              return Promise.resolve('0x123');
            }),
          })),
          applyForKyc: jest.fn(() => ({
            signAndSend: jest.fn((account, callback) => {
              callback(mockTransactionResponse(true));
              return Promise.resolve('0x123');
            }),
          })),
          confirmCitizenship: jest.fn(() => ({
            signAndSend: jest.fn((account, callback) => {
              callback(mockTransactionResponse(true));
              return Promise.resolve('0x123');
            }),
          })),
        },
      },
    };

    mockSigner = {};
  });

  afterEach(() => {
    jest.clearAllMocks();
  });

  describe('Identity Setup', () => {
    test('should validate name field (max 50 chars)', () => {
      // Test: set_identity_with_max_length_strings
      const longName = 'a'.repeat(51);
      const identity = generateMockIdentity(longName);

      expect(identity.name.length).toBeGreaterThan(50);

      // Component should reject this
      // In real test:
      // render(<KYCApplicationForm />);
      // const nameInput = screen.getByTestId('identity-name-input');
      // fireEvent.change(nameInput, { target: { value: longName } });
      // expect(screen.getByText(/name must be 50 characters or less/i)).toBeInTheDocument();
    });

    test('should validate email field', () => {
      const invalidEmails = ['invalid', 'test@', '@test.com', 'test @test.com'];

      invalidEmails.forEach(email => {
        const identity = generateMockIdentity('Test User', email);
        // Component should show validation error
      });
    });

    test('should successfully set identity with valid data', async () => {
      const mockIdentity = generateMockIdentity();

      mockApi.query.identityKyc.identities.mockResolvedValue({
        unwrap: () => null, // No existing identity
      });

      // Simulate form submission
      const tx = mockApi.tx.identityKyc.setIdentity(
        mockIdentity.name,
        mockIdentity.email
      );

      await expect(tx.signAndSend('address', jest.fn())).resolves.toBe('0x123');

      expect(mockApi.tx.identityKyc.setIdentity).toHaveBeenCalledWith(
        mockIdentity.name,
        mockIdentity.email
      );
    });

    test('should fail when identity already exists', async () => {
      // Test: set_identity_fails_if_already_exists
      const mockIdentity = generateMockIdentity();

      mockApi.query.identityKyc.identities.mockResolvedValue({
        unwrap: () => mockIdentity, // Existing identity
      });

      // Component should show "Identity already set" message
      // and disable the form
    });
  });

  describe('KYC Application', () => {
    test('should show deposit amount before submission', () => {
      const mockKYC = generateMockKYCApplication();

      // Component should display: "Deposit required: 10 HEZ"
      expect(mockKYC.depositAmount).toBe(10_000_000_000_000n);
    });

    test('should validate IPFS CID format', () => {
      const invalidCIDs = [
        'invalid',
        'Qm123', // too short
        'Rm' + 'a'.repeat(44), // wrong prefix
      ];

      const validCID = 'QmYwAPJzv5CZsnA625s3Xf2nemtYgPpHdWEz79ojWnPbdG';

      invalidCIDs.forEach(cid => {
        // Component should reject invalid CIDs
      });

      // Component should accept valid CID
    });

    test('should fail if identity not set', async () => {
      // Test: apply_for_kyc_fails_if_no_identity
      mockApi.query.identityKyc.identities.mockResolvedValue({
        unwrap: () => null,
      });

      // Component should show "Please set identity first" error
      // and disable KYC form
    });

    test('should fail if application already pending', async () => {
      // Test: apply_for_kyc_fails_if_already_pending
      const pendingKYC = generateMockKYCApplication('Pending');

      mockApi.query.identityKyc.applications.mockResolvedValue({
        unwrap: () => pendingKYC,
      });

      // Component should show "Application already submitted" message
      // and show current status
    });

    test('should successfully submit KYC application', async () => {
      const mockKYC = generateMockKYCApplication();

      mockApi.query.identityKyc.identities.mockResolvedValue({
        unwrap: () => generateMockIdentity(),
      });

      mockApi.query.identityKyc.applications.mockResolvedValue({
        unwrap: () => null, // No existing application
      });

      const tx = mockApi.tx.identityKyc.applyForKyc(
        mockKYC.cids,
        mockKYC.notes
      );

      await expect(tx.signAndSend('address', jest.fn())).resolves.toBe('0x123');

      expect(mockApi.tx.identityKyc.applyForKyc).toHaveBeenCalledWith(
        mockKYC.cids,
        mockKYC.notes
      );
    });

    test('should check insufficient balance before submission', () => {
      const depositRequired = 10_000_000_000_000n;
      const userBalance = 5_000_000_000_000n; // Less than required

      // Component should show "Insufficient balance" error
      // and disable submit button
    });
  });

  describe('KYC Status Display', () => {
    test('should show "Pending" status with deposit amount', () => {
      const pendingKYC = generateMockKYCApplication('Pending');

      // Component should display:
      // - Status badge: "Pending"
      // - Deposit amount: "10 HEZ"
      // - Message: "Your application is under review"
    });

    test('should show "Approved" status with success message', () => {
      const approvedKYC = generateMockKYCApplication('Approved');

      // Component should display:
      // - Status badge: "Approved" (green)
      // - Message: "Congratulations! Your KYC has been approved"
      // - Citizen NFT info
    });

    test('should show "Rejected" status with reason', () => {
      const rejectedKYC = generateMockKYCApplication('Rejected');

      // Component should display:
      // - Status badge: "Rejected" (red)
      // - Message: "Your application was rejected"
      // - Button: "Reapply"
    });
  });

  describe('Self-Confirmation', () => {
    test('should enable self-confirmation button for pending applications', () => {
      // Test: confirm_citizenship_works
      const pendingKYC = generateMockKYCApplication('Pending');

      // Component should show "Self-Confirm Citizenship" button
      // (for Welati NFT holders)
    });

    test('should successfully self-confirm citizenship', async () => {
      const tx = mockApi.tx.identityKyc.confirmCitizenship();

      await expect(tx.signAndSend('address', jest.fn())).resolves.toBe('0x123');

      expect(mockApi.tx.identityKyc.confirmCitizenship).toHaveBeenCalled();
    });

    test('should fail self-confirmation when not pending', () => {
      // Test: confirm_citizenship_fails_when_not_pending
      const approvedKYC = generateMockKYCApplication('Approved');

      // Self-confirm button should be hidden or disabled
    });
  });

  describe('Citizenship Renunciation', () => {
    test('should show renounce button for approved citizens', () => {
      // Test: renounce_citizenship_works
      const approvedKYC = generateMockKYCApplication('Approved');

      // Component should show "Renounce Citizenship" button
      // with confirmation dialog
    });

    test('should allow reapplication after renunciation', () => {
      // Test: renounce_citizenship_allows_reapplication
      const notStartedKYC = generateMockKYCApplication('NotStarted');

      // After renouncing, status should be NotStarted
      // and user can apply again (free world principle)
    });
  });

  describe('Admin Actions', () => {
    test('should show approve/reject buttons for root users', () => {
      // Test: approve_kyc_works, reject_kyc_works
      const isRoot = true; // Mock root check

      if (isRoot) {
        // Component should show admin panel with:
        // - "Approve KYC" button
        // - "Reject KYC" button
        // - Application details
      }
    });

    test('should refund deposit on approval', () => {
      // After approval, deposit should be refunded to applicant
      const depositAmount = 10_000_000_000_000n;

      // Component should show: "Deposit refunded: 10 HEZ"
    });

    test('should refund deposit on rejection', () => {
      // After rejection, deposit should be refunded to applicant
      const depositAmount = 10_000_000_000_000n;

      // Component should show: "Deposit refunded: 10 HEZ"
    });
  });
});

/**
 * TEST DATA FIXTURES
 */
export const kycTestFixtures = {
  validIdentity: generateMockIdentity(),
  invalidIdentity: {
    name: 'a'.repeat(51), // Too long
    email: 'invalid-email',
  },
  pendingApplication: generateMockKYCApplication('Pending'),
  approvedApplication: generateMockKYCApplication('Approved'),
  rejectedApplication: generateMockKYCApplication('Rejected'),
  validCIDs: [
    'QmYwAPJzv5CZsnA625s3Xf2nemtYgPpHdWEz79ojWnPbdG',
    'QmT5NvUtoM5nWFfrQdVrFtvGfKFmG7AHE8P34isapyhCxX',
  ],
  depositAmount: 10_000_000_000_000n,
};
