Code Editor for app.py

import streamlit as st
import json

st.title("JSON Format Validator")

# Text area for input
user_input = st.text_area("Enter the text to validate as JSON:", height=300)

if st.button("Validate JSON"):
    if user_input:
        try:
            # Try to parse the input as JSON
            parsed_json = json.loads(user_input)
            
            # If successful, display the parsed JSON in a nice format
            st.success("✅ Valid JSON format!")
            
            # Display the formatted JSON
            st.subheader("Formatted JSON:")
            st.json(parsed_json)
            
            # Additional information about the JSON structure
            st.subheader("JSON Structure Information:")
            if isinstance(parsed_json, dict):
                st.write(f"Type: Dictionary/Object with {len(parsed_json)} key-value pairs")
                st.write("Top-level keys:", list(parsed_json.keys()))
            elif isinstance(parsed_json, list):
                st.write(f"Type: List/Array with {len(parsed_json)} elements")
            else:
                st.write(f"Type: {type(parsed_json).__name__}")
                
        except json.JSONDecodeError as e:
            # If JSON parsing fails, show the error
            st.error(f"❌ Invalid JSON format!\nError: {str(e)}")
            
            # Provide some common JSON formatting tips
            st.warning("Common JSON formatting tips:")
            st.markdown("""
            - Strings must be enclosed in double quotes
            - Use square brackets [] for arrays
            - Use curly braces {} for objects
            - Separate key-value pairs with commas
            - Keys must be strings (in double quotes)
            - No trailing commas allowed
            """)
    else:
        st.warning("Please enter some text to validate.")