#!/bin/bash
set -e

cd PROJECT_PATH_PLACEHOLDER

echo "========================================"
echo "开始部署..."
echo "========================================"

# 备份重要数据
echo "[1/6] 备份数据..."
if [ -d "uploads" ]; then
    mkdir -p backups
    backup_dir="backups/uploads-$(date +%Y%m%d-%H%M%S)"
    cp -r uploads "$backup_dir" 2>/dev/null || true
    echo "  ✓ 上传目录已备份到 $backup_dir"
fi

# 检查 Docker 和 Docker Compose
echo "[2/6] 检查环境..."
if ! command -v docker > /dev/null 2>&1; then
    echo "错误: Docker 未安装" >&2
    exit 1
fi

# 使用 docker compose 或 docker-compose
if docker compose version > /dev/null 2>&1; then
    DOCKER_COMPOSE="docker compose"
elif docker-compose version > /dev/null 2>&1; then
    DOCKER_COMPOSE="docker-compose"
else
    echo "错误: Docker Compose 未安装" >&2
    exit 1
fi

echo "  ✓ 使用: $DOCKER_COMPOSE"

# 停止旧容器（优雅停止）
echo "[3/6] 停止旧容器..."
$DOCKER_COMPOSE down --timeout 30 2>/dev/null || true
echo "  ✓ 旧容器已停止"

# 构建新镜像（使用缓存，除非指定 --no-cache）
echo "[4/6] 构建 Docker 镜像..."
BUILD_FLAG_PLACEHOLDER
if [ -n "$BUILD_FLAG" ]; then
    echo "  ⚠ 使用 --no-cache 模式（构建时间较长）"
    $DOCKER_COMPOSE build $BUILD_FLAG app && $DOCKER_COMPOSE up -d app
else
    echo "  ✓ 使用智能构建缓存（推荐）"
    $DOCKER_COMPOSE up -d --build app
fi

if [ $? -ne 0 ]; then
    echo "错误: 容器构建或启动失败" >&2
    exit 1
fi
echo "  ✓ 容器构建并启动完成"

# 等待容器就绪
echo "  ⏳ 等待容器就绪..."
sleep 10

# 检查容器状态
max_attempts=30
attempt=0
while [ $attempt -lt $max_attempts ]; do
    if $DOCKER_COMPOSE ps app | grep -q "Up"; then
        echo "  ✓ 容器运行中"
        break
    fi
    attempt=$((attempt + 1))
    sleep 2
done

if [ $attempt -eq $max_attempts ]; then
    echo "  ⚠ 警告: 容器可能未正常启动，请检查日志"
fi

# 执行数据库迁移（如果需要）
echo "[6/6] 检查数据库迁移..."
if [ -f prisma/schema.prisma ]; then
    $DOCKER_COMPOSE exec -T app npx prisma db push --accept-data-loss --schema=/app/prisma/schema.prisma 2>/dev/null || echo "  ⚠ 数据库迁移跳过或已完成"
fi

# 显示部署结果
echo ""
echo "========================================"
echo "部署完成！"
echo "========================================"
echo ""
echo "容器状态:"
$DOCKER_COMPOSE ps
echo ""
echo "应用日志（最后 30 行）:"
$DOCKER_COMPOSE logs app --tail=30
echo ""
echo "如需查看完整日志，请运行:"
echo "  $DOCKER_COMPOSE logs -f app"
echo ""