#!/usr/bin/env bash
# Verify Bridge Contracts with Certora Prover
# Runs formal verification for all bridge contracts

set -euo pipefail

SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
PROJECT_ROOT="$(cd "$SCRIPT_DIR/../../.." && pwd)"

CERTORA_DIR="$PROJECT_ROOT/verification/certora"
SPECS_DIR="$CERTORA_DIR/specs"
REPORTS_DIR="$PROJECT_ROOT/verification/reports"
CONTRACTS_DIR="$PROJECT_ROOT/contracts/bridge/trustless"

echo "Certora Formal Verification - Trustless Bridge"
echo "==============================================="
echo ""

# Check if Certora is installed
if ! command -v certoraRun &> /dev/null; then
    echo "Error: Certora Prover not found"
    echo ""
    echo "To install Certora Prover:"
    echo "1. Contact Certora for a license: https://www.certora.com/"
    echo "2. Follow installation instructions from Certora"
    echo "3. Ensure certoraRun is in your PATH"
    exit 1
fi

# Check if specs exist
if [ ! -d "$SPECS_DIR" ]; then
    echo "Error: Specifications directory not found: $SPECS_DIR"
    exit 1
fi

# Create reports directory
mkdir -p "$REPORTS_DIR"

echo "Verification Configuration:"
echo "  Contracts: $CONTRACTS_DIR"
echo "  Specs: $SPECS_DIR"
echo "  Reports: $REPORTS_DIR"
echo ""

# Verify each contract
CONTRACTS=(
    "BondManager"
    "ChallengeManager"
    "InboxETH"
    "LiquidityPoolETH"
    "Lockbox138"
)

PASSED=0
FAILED=0

for contract in "${CONTRACTS[@]}"; do
    contract_file="$CONTRACTS_DIR/${contract}.sol"
    spec_file="$SPECS_DIR/${contract}.spec"
    
    if [ ! -f "$contract_file" ]; then
        echo "⚠️  Skipping $contract: contract file not found"
        continue
    fi
    
    if [ ! -f "$spec_file" ]; then
        echo "⚠️  Skipping $contract: specification file not found"
        continue
    fi
    
    echo "Verifying $contract..."
    echo "  Contract: $contract_file"
    echo "  Spec: $spec_file"
    
    # Run Certora verification
    if certoraRun "$contract_file" \
        --verify "$contract:$spec_file" \
        --solc solc-0.8.19 \
        --optimistic_loop \
        --loop_iter 3 \
        --smt_timeout 600 \
        --msg "$contract verification" \
        --output_dir "$REPORTS_DIR" \
        2>&1 | tee "$REPORTS_DIR/${contract}_verification.log"; then
        echo "✅ $contract: Verification passed"
        PASSED=$((PASSED + 1))
    else
        echo "❌ $contract: Verification failed"
        FAILED=$((FAILED + 1))
    fi
    
    echo ""
done

echo "=========================================="
echo "Verification Summary"
echo "=========================================="
echo "  ✅ Passed: $PASSED"
echo "  ❌ Failed: $FAILED"
echo "  📊 Total: $((PASSED + FAILED))"
echo ""
echo "Reports saved to: $REPORTS_DIR"

if [ $FAILED -eq 0 ]; then
    echo ""
    echo "✅ All verifications passed!"
    exit 0
else
    echo ""
    echo "❌ Some verifications failed. Review reports for details."
    exit 1
fi