Dev.to
6/28/2026

Building JSON input validation layer for poker analysis tool
Original: Before the Algorithm: Building the Input Layer for My Poker Analysis Tool
Short summary
The author built a JSON-based input validation layer for a poker analysis tool to catch invalid scenarios at the input stage with field-level error messages instead of silent failures. She created 5 incrementally complex scenario modes and decoupled form models from JSON to prepare for a GUI. CLI utilities test the architecture before committing to a user interface.
- •Designed 5 scenario modes with growing complexity to isolate where breakage occurs
- •Built form models separate from JSON to support future GUI without a complete rewrite
- •Implemented field-level validation that surfaces errors without auto-correction
Generated with AI, which can make mistakes.
Is this a good recommendation for you?



