#!/usr/bin/env bash
# Propose contract upgrade via multisig
# Usage: ./propose-upgrade.sh <multisig_address> <target_contract> <new_implementation> <description>

set -euo pipefail

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

source "$PROJECT_ROOT/.env" 2>/dev/null || true

MULTISIG_ADDRESS="${1:-}"
TARGET_CONTRACT="${2:-}"
NEW_IMPLEMENTATION="${3:-}"
DESCRIPTION="${4:-Contract upgrade}"

if [ -z "$MULTISIG_ADDRESS" ] || [ -z "$TARGET_CONTRACT" ] || [ -z "$NEW_IMPLEMENTATION" ]; then
    echo "Usage: $0 <multisig_address> <target_contract> <new_implementation> [description]"
    echo ""
    echo "Example:"
    echo "  $0 0x1234... 0x5678... 0x9ABC... 'Upgrade LiquidityPoolETH to v2'"
    exit 1
fi

RPC_URL="${ETHEREUM_MAINNET_RPC:-${RPC_URL:-}}"
if [ -z "$RPC_URL" ]; then
    echo "Error: RPC_URL or ETHEREUM_MAINNET_RPC must be set"
    exit 1
fi

PRIVATE_KEY="${PRIVATE_KEY:-}"
if [ -z "$PRIVATE_KEY" ]; then
    echo "Error: PRIVATE_KEY must be set"
    exit 1
fi

echo "Proposing upgrade via multisig..."
echo "Multisig: $MULTISIG_ADDRESS"
echo "Target Contract: $TARGET_CONTRACT"
echo "New Implementation: $NEW_IMPLEMENTATION"
echo "Description: $DESCRIPTION"
echo ""

# Encode upgrade transaction data
# Note: This assumes the target contract uses a standard upgrade pattern
# Adjust the function signature based on your upgrade mechanism
UPGRADE_DATA=$(cast calldata "upgrade(address)" "$NEW_IMPLEMENTATION")

# Create multisig transaction
# Note: This uses Gnosis Safe's submitTransaction function
# Adjust based on your multisig implementation
MULTISIG_CALLDATA=$(cast calldata "submitTransaction(address,uint256,bytes)" \
    "$TARGET_CONTRACT" \
    "0" \
    "$UPGRADE_DATA")

echo "Transaction data prepared:"
echo "$MULTISIG_CALLDATA"
echo ""

# Submit transaction (if using cast directly)
# For Gnosis Safe, you may need to use their SDK or API
echo "To submit this transaction:"
echo "1. Use Gnosis Safe web interface, or"
echo "2. Use Gnosis Safe SDK, or"
echo "3. Call submitTransaction on the multisig contract"
echo ""
echo "Transaction details:"
echo "  To: $MULTISIG_ADDRESS"
echo "  Data: $MULTISIG_CALLDATA"
echo "  Value: 0 ETH"
echo ""

# Optional: Create a JSON file with transaction details for manual submission
TX_FILE="$SCRIPT_DIR/upgrade-proposal-$(date +%Y%m%d-%H%M%S).json"
cat > "$TX_FILE" <<EOF
{
  "multisig": "$MULTISIG_ADDRESS",
  "target": "$TARGET_CONTRACT",
  "newImplementation": "$NEW_IMPLEMENTATION",
  "description": "$DESCRIPTION",
  "calldata": "$MULTISIG_CALLDATA",
  "timestamp": "$(date -u +%Y-%m-%dT%H:%M:%SZ)"
}
EOF

echo "Transaction details saved to: $TX_FILE"
echo ""
echo "Next steps:"
echo "1. Review the transaction details"
echo "2. Submit via Gnosis Safe interface"
echo "3. Wait for required signatures"
echo "4. Execute the transaction"