#!/usr/bin/env bash

set -e

# Formal verification script for smart contracts
# Uses tools like Certora, K framework, or similar

SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
# Source init script if it exists
[ -f "$SCRIPT_DIR/../lib/init.sh" ] && source "$SCRIPT_DIR/../lib/init.sh" || true
PROJECT_ROOT="$(cd "$SCRIPT_DIR/../.." && pwd)"

CONTRACTS_DIR="${PROJECT_ROOT}/contracts"
OUTPUT_DIR="${PROJECT_ROOT}/verification"
CERTORA_DIR="${OUTPUT_DIR}/certora"
SPECS_DIR="${CERTORA_DIR}/specs"
REPORTS_DIR="${OUTPUT_DIR}/reports"

echo "Formal Verification for Smart Contracts"
echo "========================================"

# Create output directories
mkdir -p "$OUTPUT_DIR"
mkdir -p "$CERTORA_DIR"
mkdir -p "$SPECS_DIR"
mkdir -p "$REPORTS_DIR"

# List of contracts to verify
CONTRACTS=(
    "oracle/Aggregator.sol"
    "ccip/CCIPRouter.sol"
    "ccip/CCIPSender.sol"
    "ccip/CCIPReceiver.sol"
    "bridge/trustless/Lockbox138.sol"
    "bridge/trustless/InboxETH.sol"
    "bridge/trustless/BondManager.sol"
    "bridge/trustless/ChallengeManager.sol"
    "bridge/trustless/LiquidityPoolETH.sol"
    "bridge/trustless/SwapRouter.sol"
    "bridge/trustless/BridgeSwapCoordinator.sol"
)

echo "Note: This script provides a framework for formal verification."
echo "To use, integrate with a formal verification tool like:"
echo "  - Certora Prover"
echo "  - K Framework"
echo "  - Dafny"
echo "  - Why3"

for contract in "${CONTRACTS[@]}"; do
    contract_path="${CONTRACTS_DIR}/${contract}"
    contract_name=$(basename "$contract" .sol)
    
    if [ -f "$contract_path" ]; then
        echo "✓ Found: $contract"
        echo "  - Path: $contract_path"
        echo "  - Verification spec: $OUTPUT_DIR/${contract_name}.spec"
    else
        echo "✗ Not found: $contract"
    fi
done

echo ""
echo "Certora Configuration:"
echo "  - Config file: $CERTORA_DIR/certora.conf"
echo "  - Specs directory: $SPECS_DIR"
echo "  - Reports directory: $REPORTS_DIR"
echo ""
echo "To perform formal verification:"
echo "1. Install Certora Prover (requires license)"
echo "2. Review specification files in $SPECS_DIR"
echo "3. Run verification using:"
echo "   bash scripts/bridge/trustless/verify-contracts.sh"
echo ""
echo "Example Certora command:"
echo "  certoraRun contracts/bridge/trustless/BondManager.sol \\"
echo "    --verify BondManager:verification/certora/specs/BondManager.spec"