#!/usr/bin/env bash
# Bootstrap local Z Chain (chainId 900002) with Hyperledger Besu via Docker.
set -euo pipefail

ROOT="$(cd "$(dirname "$0")/../.." && pwd)"
NETWORK_DIR="${Z_CHAIN_NETWORK_DIR:-$ROOT/logs/z-chain-network}"
GENESIS_CONFIG="$ROOT/config/z-chain-network-config.json"
RPC_PORT="${Z_CHAIN_RPC_PORT:-8546}"
CONTAINER_NAME="${Z_CHAIN_BESU_CONTAINER:-z-chain-besu}"

cd "$ROOT"

if ! command -v docker &>/dev/null; then
  echo "ERROR: docker is required. Install Docker and retry."
  exit 1
fi

if [[ ! -f "$GENESIS_CONFIG" ]]; then
  echo "ERROR: missing $GENESIS_CONFIG"
  exit 1
fi

mkdir -p "$NETWORK_DIR"

if [[ ! -f "$NETWORK_DIR/genesis.json" ]]; then
  echo "Generating IBFT2 network files in $NETWORK_DIR ..."
  docker run --rm \
    -v "$ROOT/config:/config:ro" \
    -v "$NETWORK_DIR:/network" \
    hyperledger/besu:latest \
    operator generate-blockchain-config \
      --config-file=/config/z-chain-network-config.json \
      --to=/network
fi

if docker ps -a --format '{{.Names}}' | grep -qx "$CONTAINER_NAME"; then
  echo "Removing existing container $CONTAINER_NAME ..."
  docker rm -f "$CONTAINER_NAME" >/dev/null
fi

NODE_KEY="$NETWORK_DIR/keys/node1/key"
GENESIS="$NETWORK_DIR/genesis.json"

if [[ ! -f "$NODE_KEY" || ! -f "$GENESIS" ]]; then
  echo "ERROR: generated network files missing under $NETWORK_DIR"
  exit 1
fi

echo "Starting Z Chain Besu on http://127.0.0.1:$RPC_PORT (chainId 900002) ..."
docker run -d \
  --name "$CONTAINER_NAME" \
  -p "${RPC_PORT}:8545" \
  -v "$NETWORK_DIR:/network:ro" \
  hyperledger/besu:latest \
  --data-path=/tmp/besu \
  --genesis-file=/network/genesis.json \
  --node-private-key-file=/network/keys/node1/key \
  --rpc-http-enabled \
  --rpc-http-api=ETH,NET,WEB3,IBFT,ADMIN,DEBUG \
  --rpc-http-host=0.0.0.0 \
  --rpc-http-port=8545 \
  --rpc-http-cors-origins="*" \
  --host-allowlist="*" \
  --min-gas-price=0

echo ""
echo "Z Chain local RPC: http://127.0.0.1:$RPC_PORT"
echo "Export: CHAIN_900002_RPC_URL=http://127.0.0.1:$RPC_PORT"
echo "Export: VITE_RPC_URL_900002=http://127.0.0.1:$RPC_PORT"
echo "Verify: cast chain-id --rpc-url http://127.0.0.1:$RPC_PORT"