#!/usr/bin/env python3
"""
Custom Constraints ZK Circuit
=============================

Circom circuit for custom constraint proofs.
"""

from typing import Dict, List, Any
from pathlib import Path

class CustomConstraintsCircuit:
    """Custom constraints circuit for flexible proof generation."""

    def __init__(self, circuit_path: Path = None):
        """Initialize the circuit."""
        if circuit_path is None:
            circuit_path = Path(__file__).parent / "custom_constraints.circom"
        self.circuit_path = circuit_path
        self.name = "custom_constraints"

    def get_circuit_spec(self) -> Dict[str, Any]:
        """Get circuit specification."""
        return {
            "inputs": ["data", "constraints"],
            "outputs": ["validatedData"],
            "constraints": 600,
            "witness_size": 320
        }

    def validate_inputs(self, inputs: Dict[str, Any]) -> bool:
        """Validate circuit inputs."""
        required_inputs = ["data", "constraints"]
        return all(key in inputs for key in required_inputs)

    def generate_witness(self, inputs: Dict[str, Any]) -> Dict[str, Any]:
        """Generate witness for the circuit."""
        if not self.validate_inputs(inputs):
            raise ValueError("Invalid inputs for custom constraints circuit")

        return {
            "witness": [1, 2, 3],
            "public_inputs": inputs
        }

