#!/usr/bin/env bash
set -euo pipefail

# ═══════════════════════════════════════════
#  姜十三论坛 开发环境启动脚本 (Linux/macOS)
# ═══════════════════════════════════════════

ROOT_DIR="$(cd "$(dirname "$0")" && pwd)"
cd "$ROOT_DIR"

echo "══════════════════════════════════════════"
echo "  姜十三论坛 开发环境启动脚本"
echo "══════════════════════════════════════════"
echo ""

# ---- 1. 启动 PostgreSQL ----
echo "[1/3] 启动数据库 (Docker Compose)..."
if ! command -v docker &>/dev/null; then
    echo "✗ 未检测到 docker，请先安装 Docker"
    exit 1
fi
docker compose up -d postgres
echo "√ 数据库已启动"
echo ""

# ---- 2. 检查后端配置 ----
echo "[2/3] 检查后端配置..."
if [ ! -f "backend/app.ini" ]; then
    cp "backend/app.ini.example" "backend/app.ini"
    echo "  已从模板创建 backend/app.ini，请按需修改配置"
fi
mkdir -p backend/data

# 启动后端（后台）
echo "  启动后端 (端口 3001, cwd=backend, data=backend/data)..."
cd "$ROOT_DIR/backend"
go run ./cmd/jiang13 &
BACKEND_PID=$!
cd "$ROOT_DIR"
echo "√ 后端已启动 (PID: $BACKEND_PID)"
echo ""

# ---- 3. 检查前端配置 ----
echo "[3/3] 检查前端配置..."
if [ ! -f "frontend/.env.local" ]; then
    cp "frontend/.env.example" "frontend/.env.local"
    echo "  已从模板创建 frontend/.env.local"
fi

# 检查 node_modules
if [ ! -d "frontend/node_modules" ]; then
    echo "  首次运行，安装前端依赖..."
    cd "$ROOT_DIR/frontend"
    npm install
    cd "$ROOT_DIR"
fi

# 启动前端（后台）
echo "  启动前端 (端口 3000)..."
cd "$ROOT_DIR/frontend"
npm run dev &
FRONTEND_PID=$!
cd "$ROOT_DIR"
echo "√ 前端已启动 (PID: $FRONTEND_PID)"
echo ""

echo "══════════════════════════════════════════"
echo "  全部启动完成！"
echo ""
echo "  前端:  http://localhost:3000"
echo "  后端:  http://localhost:3001"
echo "  数据目录: $ROOT_DIR/backend/data"
echo "  数据库: localhost:5432"
echo ""
echo "  后端 PID: $BACKEND_PID"
echo "  前端 PID: $FRONTEND_PID"
echo "  停止服务: ./stop.sh   （或 Ctrl+C 本脚本）"
echo "  停库: docker compose down"
echo "══════════════════════════════════════════"

# 捕获 Ctrl+C，清理子进程
cleanup() {
    echo ""
    echo "正在停止服务..."
    kill $BACKEND_PID 2>/dev/null || true
    kill $FRONTEND_PID 2>/dev/null || true
    docker compose down 2>/dev/null || true
    echo "已停止"
}
trap cleanup EXIT INT TERM

# 保持脚本运行
wait