Running:

• backend: cd backend && php -S localhost:8004 -t .
• frontend: cd ui && yarn run start

navigate in browser: http://localhost:3000

Screenshots:

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Testing:

• backend (phpUnit):
  • cd backend && ./vendor/bin/phpunit --verbose ./LogfileViewerTest.php
  • php testing server uses 8099 port
• frontend (jest):
  • cd ui && yarn run test

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Security:

• used simple Basic Auth:
  • depend on window.prompt and pre-call check_auth in frontend
  • hardcoded in index.php (class BasicAuth)

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Performance:

• head & tail commands used, file with 100M lines (1.18 GB) seq 100000000 > test.in used memory "1.44 KB"

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Others:

• PHP v8.0.28
• React
• add _debugger to response
• Doc (phpDocumentor): phpDocumentor -d ./backend -t docs
• [Enter] key trigger view file action
• handle if PHP testing server port is already in used
• unify Basic Auth of xhr to depend on headers as well instead of params
• yarn run build (prod.)
• add remain rules and tests
• dockerize app
• make filePath configurable to not be "under server log directory" only
• make page size configurable instead of hardcoded 10
• add searching & exporting functionalities
• etc..