#!/bin/bash
# Neo4j 一键安装脚本 - CentOS/RHEL/Fedora

set -e

echo "========================================"
echo "Neo4j 一键安装脚本 - CentOS/RHEL/Fedora"
echo "========================================"

if [ "$EUID" -eq 0 ]; then
    SUDO=""
else
    SUDO="sudo"
fi

# 1. 检查 Java
echo "[1/5] 检查 Java 环境..."
if command -v java &> /dev/null; then
    echo "  已安装: $(java -version 2>&1 | head -n 1)"
else
    echo "  安装 OpenJDK 17..."
    $SUDO yum install -y java-17-openjdk-headless
fi

# 2. 添加 Neo4j 源
echo "[2/5] 添加 Neo4j 源..."
$SUDO cat > /etc/yum.repos.d/neo4j.repo << 'EOF'
[neo4j]
name=Neo4j Repository
baseurl=https://yum.neo4j.com/stable
enabled=1
gpgcheck=1
gpgkey=https://debian.neo4j.com/neotechnology.gpg.key
EOF

# 3. 安装
echo "[3/5] 安装 Neo4j..."
$SUDO yum install -y neo4j

# 4. 配置
echo "[4/5] 配置 Neo4j..."
$SUDO sed -i 's/#server.default_listen_address=0.0.0.0/server.default_listen_address=0.0.0.0/' /etc/neo4j/neo4j.conf

# 5. 启动
echo "[5/5] 启动 Neo4j..."
$SUDO systemctl enable neo4j
$SUDO systemctl start neo4j
sleep 3

# 6. 配置 Python 虚拟环境
echo "[6/6] 配置 Python 虚拟环境..."
PROJECT_DIR="$HOME/graph-memory"
mkdir -p "$PROJECT_DIR"
cd "$PROJECT_DIR"
python3 -m venv venv
source venv/bin/activate
pip install --upgrade pip
pip install neo4j openai

# Neo4j 连接配置
NEO4J_URI="${NEO4J_URI:-bolt://localhost:7687}"
NEO4J_USER="${NEO4J_USER:-neo4j}"
NEO4J_PASSWORD="${NEO4J_PASSWORD:-neo4j}"

if [ -n "$NEO4J_URI" ] && [ "$NEO4J_URI" != "bolt://localhost:7687" ]; then
    echo "  使用远程 Neo4j: $NEO4J_URI"
else
    RUNNING=$(docker ps --filter "name=neo4j" --format "{{.Names}}" 2>/dev/null | head -1)
    if [ -n "$RUNNING" ]; then
        NEO4J_AUTH=$(docker inspect "$RUNNING" --format '{{.Config.Env}}' 2>/dev/null | tr ' ' '\n' | grep NEO4J_AUTH | cut -d'=' -f2)
        NEO4J_PASSWORD=$(echo "$NEO4J_AUTH" | cut -d'/' -f2)
    fi
    NEO4J_URI="bolt://localhost:7687"
fi

cat > .env << EOF
DEEPSEEK_API_KEY=your-api-key-here
NEO4J_URI=${NEO4J_URI}
NEO4J_USER=${NEO4J_USER}
NEO4J_PASSWORD=${NEO4J_PASSWORD}
EOF

echo ""
echo "========================================"
echo "安装完成!"
echo "========================================"
echo "控制台: http://localhost:7474"
echo ""
echo "远程 Neo4j 配置示例:"
echo "  NEO4J_URI=bolt://192.168.1.100:7687 \\"
echo "  NEO4J_PASSWORD=your_password \\"
echo "  python /home/program/graph_enable_ability/graph_memory_demo.py"
echo ""
echo "启动对话:"
echo "  cd $PROJECT_DIR && source venv/bin/activate"
echo "  python /home/program/graph_enable_ability/graph_memory_demo.py"