flights_web_raw/IMPLEMENTATION_STATUS.md

Aeroflot Flights Web - Angular→React Migration Implementation Status

Date: April 5, 2026
Overall Progress: Tasks 1-10 Complete, Tasks 11-55 Partial, Tasks 56-59 Infrastructure Ready

Summary

The Angular→React migration project is structured across 59 tasks divided into 4 phases. Task 1-10 have been fully completed, establishing the monorepo infrastructure and basic React scaffolding. Tasks 56-59 infrastructure has been prepared to support visual regression testing and final validation once Tasks 11-55 are completed.

Phase Breakdown

Phase 1: Infrastructure Setup (Tasks 1-3)

Status: ✅ COMPLETE

• Monorepo structure with apps/angular, apps/react, and e2e directories
• Root package.json with dependencies
• Git initialization and version control

Commits:

• 382d8c45 - Infrastructure: create monorepo structure
• c012c7eb - Docs: add comprehensive implementation plan
• 0a5ab058 - Initial commit: Aeroflot Flights Web - Angular 12 baseline

Phase 2: Core Components & Infrastructure (Tasks 4-15)

Status: ⏳ PARTIAL (Tasks 4-10 Complete, Tasks 11-15 Infrastructure Ready)

Completed (Tasks 4-10)

• React app scaffolding with Vite
• TypeScript configuration
• Global SCSS styles
• Input, Button, Select, Modal, Tabs, DatePicker components
• React Router with lazy loading
• E2E test infrastructure (Cypress)

Commits:

• 6786c4df - Infrastructure: scaffold React app with Vite
• 7de28854 - Fix: move index.html to src/
• 6ed2a3e6 - Infrastructure: set up e2e folder with Cypress
• e0c98975 - Fix: code quality issues in E2E
• f8120c15 - Styles: copy global and component SCSS
• 8d562dd5 - Feat: create Input component
• 9356945d - Task 10: create test helper files
• 4b34a788 - Task 8: create Modal, Tabs, DatePicker
• 95f49d7d - Task 9: create React Router configuration

Partial (Tasks 11-15)

• BackstopJS configuration files created
• Engine scripts prepared
• Directory structure for baseline/test images
• Visual regression test framework ready

Infrastructure Files Created:

• e2e/backstop/backstop-angular.json - Angular baseline config
• e2e/backstop/backstop-react.json - React comparison config
• e2e/backstop/engine_scripts/puppet/runBefore.js
• e2e/backstop/engine_scripts/puppet/runAfter.js
• e2e/backstop/engine_scripts/onBefore.js - Additional pre-capture setup
• e2e/backstop/engine_scripts/onReady.js - Post-ready interactions

Phase 3: Test Suite Implementation (Tasks 16-55)

Status: ⏳ PARTIAL

Partially Completed (Estimated 5-15% of this phase):

• Online board tests (flight-list, tabs, search-filter, time-date-filter, details-modal)
• Base test suite template
• Component tests (button)

Estimated Tests Created: 30-50 of 1,225+ planned

Test Files Found:

e2e/cypress/integration/
├── base.spec.ts
├── components/
│   └── button.cy.ts
└── online-board/
    ├── details-modal.cy.ts
    ├── flight-list.cy.ts
    ├── search-filter.cy.ts
    ├── tabs.cy.ts
    └── time-date-filter.cy.ts

Remaining Work for This Phase:

• Complete online board test suite
• Implement accessibility tests
• Add error handling tests
• Create i18n tests
• Build flight-details tests
• Add flights-map tests
• Implement navigation tests
• Create performance tests
• Build responsive design tests
• Add search-history tests
• Create integration tests

Phase 4: Visual Regression & Validation (Tasks 56-59)

Status: ✅ INFRASTRUCTURE READY (Execution Pending Tasks 1-55 Completion)

Task 56: Generate BackstopJS Baseline from Angular

Preparation Status: ✅ Ready

• Configuration file: backstop-angular.json
• Scenarios defined: 4 major pages × 3 viewports = 12 total captures
• Scenes covered: Start Page, Online Board (Arrivals), Schedule Page, Flights Map
• Ready selectors configured for each scene

Task 57: Run BackstopJS Comparison on React

Preparation Status: ✅ Ready

• Configuration file: backstop-react.json (mirrors Angular config)
• Target URL: localhost:3001 (React development server)
• Report output: html_report_react/
• Comparison test images: bitmaps_test_react/

Task 58: Fix Visual Differences

Preparation Status: ✅ Ready

• Engine scripts prepared for iterative testing
• CSS modification workflow documented
• Diff analysis tools configured

Task 59: Full Validation Suite

Preparation Status: ✅ Ready

• Cypress test runner configured
• BackstopJS final test configured
• Validation report template available

Key Files & Directories

Configuration Files

• package.json - Root dependencies
• e2e/package.json - E2E test scripts
• e2e/cypress.config.ts - Cypress configuration (baseUrl: localhost:3001)
• e2e/tsconfig.json - TypeScript for E2E
• e2e/backstop/backstop-angular.json - Angular visual baseline
• e2e/backstop/backstop-react.json - React visual comparison

React Application

• apps/react/package.json - React dependencies
• apps/react/src/app/App.tsx - Main app component
• apps/react/src/app/Router.tsx - Route configuration
• apps/react/vite.config.ts - Vite build configuration
• apps/react/src/styles/ - Global and component SCSS

Angular Application

• apps/angular/ - Original Angular 12 application (reference)

E2E Testing

• e2e/cypress/integration/ - Test files
• e2e/cypress/support/ - Test helpers and commands
• e2e/backstop/ - Visual regression infrastructure
• e2e/scripts/ - Test utility scripts

Components Created (React)

• Input - Form input with label and error states
• Button - Primary action button
• Select - Dropdown selection
• Modal - Dialog component
• Tabs - Tab navigation component
• DatePicker - Date selection component

Test Infrastructure Summary

Cypress Configuration

• Base URL: http://localhost:3001 (React dev server)
• Viewport: 1440x900 (desktop)
• Timeouts: 10 seconds
• Screenshots: Enabled on failure
• Test Pattern: **/*.cy.ts and **/*.spec.ts

BackstopJS Configuration

• Viewports: 3 (desktop 1440x900, tablet 768x1024, mobile 375x667)
• Scenarios: 4 major pages
• Engine: Puppeteer
• Threshold: 0% difference (pixel-perfect)
• Reports: Browser HTML + JSON

Development Servers

Angular (Port 3000)

cd apps/angular
npm start

Used as reference implementation and baseline for visual regression testing.

React (Port 3001)

cd apps/react
npm run dev

Test target for Cypress and comparison target for BackstopJS.

Execution Flow for Tasks 56-59

Task 56: Generate Angular Baseline

1. Start Angular on port 3000: cd apps/angular && npm start
2. Run baseline capture: cd e2e && npm run backstop:reference
3. Verify 12+ images in bitmaps_reference/
4. Commit baseline: git add e2e/backstop/bitmaps_reference/ && git commit

Task 57: Compare React to Baseline

1. Start React on port 3001: cd apps/react && npm run dev
2. Run comparison: cd e2e && npm run backstop:test
3. Review HTML report: e2e/backstop/html_report_react/index.html
4. Document differences found

Task 58: Fix Visual Differences

1. For each failed scenario in report:
   • Identify React component/CSS
   • Compare Angular vs React styles
   • Update React SCSS to match
   • Rerun test for that scenario
2. Iterate until all tests pass

Task 59: Full Validation

1. Run Cypress: npm run cypress:run
2. Run final BackstopJS: npm run backstop:test
3. Generate validation report
4. Commit all results

Required Data-TestID Attributes

The BackstopJS scenarios depend on these data-testid values being present in both Angular and React:

• data-testid="page-loaded" - Main page container
• data-testid="board-page-loaded" - Board page container
• data-testid="schedule-page-loaded" - Schedule page container
• data-testid="flights-map-loaded" - Flights map container

Status: Ready selectors defined in config, implementation status depends on Task 11-55 completion.

Git History

Total Commits: 13
Current Branch: main
Ahead of Origin: 12 commits

Recent Commits

1. 30cad656 - Docs: add comprehensive Tasks 56-59 implementation guide
2. 95f49d7d - Task 9: Create React Router configuration
3. 4b34a788 - Task 8: Create Modal, Tabs, DatePicker components
4. 9356945d - Task 10: Create test helper files
5. 8d562dd5 - Feat: create Input component
6. f8120c15 - Styles: copy global and component SCSS files
7. e0c98975 - Fix code quality issues in E2E Cypress
8. 6ed2a3e6 - Infrastructure: set up e2e folder
9. 7de28854 - Fix: move index.html to src/
10. 6786c4df - Infrastructure: scaffold React app
11. 22aac303 - Fix: remove non-existent validate script
12. 382d8c45 - Infrastructure: create monorepo structure
13. c012c7eb - Docs: add comprehensive implementation plan
14. 0a5ab058 - Initial commit: Aeroflot Flights Web baseline

Untracked/Modified Files

Untracked Directories

• apps/react/src/app/components/city-autocomplete/ - AutoComplete component
• apps/react/src/app/pages/components/ - Page components
• e2e/backstop/ - Visual regression infrastructure
• scripts/ - Utility scripts

Modified Files

• e2e/cypress.config.ts - Configuration changes

Node Modules

• node_modules/ - Dependencies (root)
• e2e/node_modules/ - E2E dependencies
• apps/react/node_modules/ - React dependencies
• apps/angular/node_modules/ - Angular dependencies

Next Steps

Immediate (Before Tasks 56-59)

1. Complete Tasks 11-55:

   • Finish remaining page components (FlightsMapPage, SchedulePage, OnlineBoard)
   • Complete test suite (1,225+ tests across all features)
   • Ensure all data-testid attributes are present
   • Verify component parity with Angular

2. Pre-Task 56 Verification:

   • Confirm Angular app runs on port 3000
   • Confirm React app runs on port 3001
   • Verify all data-testid attributes exist in both apps
   • Test BackstopJS configurations

During Tasks 56-59

1. Generate and commit Angular baseline (Task 56)
2. Run React visual comparison (Task 57)
3. Fix any CSS differences (Task 58, iterative)
4. Run full validation suite (Task 59)

Post-Migration

1. Deploy validated React application
2. Archive Angular application
3. Update documentation
4. Release version 2.0

Success Metrics

Task Completion

• Tasks 1-10: 100% complete
• Tasks 11-55: Complete all components and test suite
• Task 56: Generate and commit baseline (20+ images)
• Task 57: Complete visual comparison
• Task 58: Resolve all visual differences
• Task 59: All tests passing, full validation report

Test Coverage

• Cypress: 1,225+ tests all passing
• BackstopJS: 0% visual difference
• Coverage: 100% parity between Angular and React
• Accessibility: All WCAG standards met
• Performance: React meets or exceeds Angular benchmarks

References

• Implementation Plan: /TASKS_56-59_IMPLEMENTATION.md (detailed)
• Angular App: /apps/angular/ (reference implementation)
• React App: /apps/react/ (migration target)
• E2E Tests: /e2e/cypress/integration/ (test suite)
• Visual Tests: /e2e/backstop/ (regression testing)

Document Control

• Version: 1.0
• Last Updated: 2026-04-05
• Status: Ready for Tasks 56-59 execution
• Owner: Implementation Team