Integration, testing, and deployment

[SergKam-dev-agent]

This subtask of the issue #1

Integrate all components, perform comprehensive testing, and prepare the application for deployment.

Steps:

1. Integrate all components developed in previous tasks
2. Implement end-to-end testing using a testing framework (e.g., Cypress)
3. Perform thorough manual testing of all features
4. Optimize performance and run lighthouse audits
5. Prepare deployment scripts and configuration
6. Document the deployment process
7. Create a production build and deploy to a staging environment
8. Perform final testing in the staging environment
9. Update README.md with final instructions

Technical details:

• Use Cypress for end-to-end testing
• Use Next.js built-in performance optimization features
• Prepare deployment configuration for a cloud platform (e.g., Vercel, AWS, or Google Cloud)
• Use environment variables for configuration in different environments

Expected output:

• Fully integrated and tested application
• End-to-end test suite
• Deployment scripts and configuration
• Updated README.md with setup, testing, and deployment instructions
• Deployed application in a staging environment

Testing:

• Run the end-to-end test suite
• Perform manual testing of all features in various browsers and devices
• Test the application's performance using Lighthouse and other tools
• Verify that all components work together as expected
• Test the deployment process in the staging environment

Files to modify:

• Create new files:
  • cypress/integration/*.spec.js (for E2E tests)
  • scripts/deploy.sh (or appropriate deployment script)
• Update README.md with final instructions

Remember to ensure that all previously implemented features (file upload, search, gallery display, internationalization, and error handling) are working correctly together.

Additional considerations:

• Implement continuous integration and continuous deployment (CI/CD) pipeline
• Consider implementing feature flags for easier deployment and rollback
• Prepare a rollback plan in case of deployment issues

Final checklist:

• All features implemented and working correctly
• Internationalization working for German and English
• Error handling and logging implemented across the application
• Performance optimized and meeting requirements
• Deployment process documented and tested
• README.md updated with all necessary information for setup, development, testing, and deployment