#!/bin/bash

# 情感博物馆前端部署脚本
# 作者: emotion-museum
# 日期: 2025-07-18
# 支持Jenkins CI/CD部署

set -e

# 配置变量 - 支持Jenkins环境变量覆盖
REMOTE_HOST="${DEPLOY_HOST:-root@47.111.10.27}"
REMOTE_WEB_DIR="${REMOTE_WEB_DIR:-/data/www/emotion-museum}"
FRONTEND_DIR="web-flowith"
PROJECT_NAME="emotion-museum-frontend"

# Jenkins构建信息
BUILD_NUMBER="${BUILD_NUMBER:-manual}"
JOB_NAME="${JOB_NAME:-local-deploy}"
BUILD_URL="${BUILD_URL:-}"

# 颜色输出
RED='\033[0;31m'
GREEN='\033[0;32m'
YELLOW='\033[1;33m'
BLUE='\033[0;34m'
NC='\033[0m'

# 日志函数
log_info() {
    echo -e "${BLUE}[INFO]${NC} $(date '+%Y-%m-%d %H:%M:%S') - $1"
}

log_success() {
    echo -e "${GREEN}[SUCCESS]${NC} $(date '+%Y-%m-%d %H:%M:%S') - $1"
}

log_warning() {
    echo -e "${YELLOW}[WARNING]${NC} $(date '+%Y-%m-%d %H:%M:%S') - $1"
}

log_error() {
    echo -e "${RED}[ERROR]${NC} $(date '+%Y-%m-%d %H:%M:%S') - $1"
}

# 检查远程服务器连接
check_remote_connection() {
    log_info "检查远程服务器连接..."
    if ssh -o ConnectTimeout=10 $REMOTE_HOST "echo 'Connection successful'" > /dev/null 2>&1; then
        log_success "远程服务器连接正常"
        return 0
    else
        log_error "无法连接到远程服务器 $REMOTE_HOST"
        return 1
    fi
}

# 检查本地环境
check_local_environment() {
    log_info "检查本地构建环境..."
    
    # 检查Node.js
    if ! command -v node &> /dev/null; then
        log_error "Node.js 未安装"
        return 1
    fi
    
    # 检查npm
    if ! command -v npm &> /dev/null; then
        log_error "npm 未安装"
        return 1
    fi
    
    log_info "Node.js 版本: $(node --version)"
    log_info "npm 版本: $(npm --version)"
    log_success "本地环境检查通过"
    return 0
}

# 安装依赖
install_dependencies() {
    log_info "安装前端依赖..."
    
    if [ -f "package-lock.json" ]; then
        npm ci --silent
    else
        npm install --silent
    fi
    
    log_success "依赖安装完成"
}

# 构建前端项目
build_frontend() {
    log_info "构建前端项目..."
    
    # 设置生产环境变量
    export NODE_ENV=production
    export VITE_API_BASE_URL=http://47.111.10.27:19000
    
    # 执行构建
    if npm run build; then
        log_success "前端项目构建成功"
        
        # 检查构建产物
        if [ -d "dist" ]; then
            local dist_size=$(du -sh dist | cut -f1)
            log_info "构建产物大小: $dist_size"
            log_info "构建产物文件:"
            ls -la dist/ | head -10
        else
            log_error "构建产物目录不存在"
            return 1
        fi
    else
        log_error "前端项目构建失败"
        return 1
    fi
}

# 创建远程目录
create_remote_directories() {
    log_info "创建远程目录结构..."
    ssh $REMOTE_HOST "
        mkdir -p $REMOTE_WEB_DIR
        mkdir -p $REMOTE_WEB_DIR/backup
        mkdir -p /data/logs/nginx
    "
    log_success "远程目录创建完成"
}

# 备份旧版本
backup_old_version() {
    log_info "备份旧版本..."
    
    local backup_name="backup_$(date +%Y%m%d_%H%M%S)"
    
    ssh $REMOTE_HOST "
        if [ -d '$REMOTE_WEB_DIR/$FRONTEND_DIR' ]; then
            mv '$REMOTE_WEB_DIR/$FRONTEND_DIR' '$REMOTE_WEB_DIR/backup/$backup_name'
            echo '旧版本已备份到: $REMOTE_WEB_DIR/backup/$backup_name'
            
            # 只保留最近5个备份
            cd '$REMOTE_WEB_DIR/backup'
            ls -t | tail -n +6 | xargs -r rm -rf
        else
            echo '没有发现旧版本，跳过备份'
        fi
    "
    
    log_success "备份完成"
}

# 部署前端文件
deploy_frontend() {
    log_info "部署前端文件到远程服务器..."
    
    # 上传构建产物
    if scp -r dist/ "$REMOTE_HOST:$REMOTE_WEB_DIR/$FRONTEND_DIR/"; then
        log_success "前端文件上传成功"
    else
        log_error "前端文件上传失败"
        return 1
    fi
    
    # 设置文件权限
    ssh $REMOTE_HOST "
        chown -R www-data:www-data '$REMOTE_WEB_DIR/$FRONTEND_DIR' 2>/dev/null || true
        chmod -R 755 '$REMOTE_WEB_DIR/$FRONTEND_DIR'
    "
    
    log_success "文件权限设置完成"
}

# 配置Nginx
configure_nginx() {
    log_info "配置Nginx..."
    
    # 创建Nginx配置
    ssh $REMOTE_HOST "cat > /etc/nginx/sites-available/emotion-museum << 'EOF'
server {
    listen 80;
    server_name 47.111.10.27;
    
    # 前端静态文件
    location /emotion-museum {
        alias $REMOTE_WEB_DIR/$FRONTEND_DIR;
        index index.html;
        try_files \$uri \$uri/ /emotion-museum/index.html;
        
        # 静态资源缓存
        location ~* \.(js|css|png|jpg|jpeg|gif|ico|svg|woff|woff2|ttf|eot)$ {
            expires 1y;
            add_header Cache-Control \"public, immutable\";
        }
        
        # HTML文件不缓存
        location ~* \.html$ {
            expires -1;
            add_header Cache-Control \"no-cache, no-store, must-revalidate\";
        }
    }
    
    # API代理到后端网关
    location /api/ {
        proxy_pass http://127.0.0.1:19000/;
        proxy_set_header Host \$host;
        proxy_set_header X-Real-IP \$remote_addr;
        proxy_set_header X-Forwarded-For \$proxy_add_x_forwarded_for;
        proxy_set_header X-Forwarded-Proto \$scheme;
        
        # WebSocket支持
        proxy_http_version 1.1;
        proxy_set_header Upgrade \$http_upgrade;
        proxy_set_header Connection \"upgrade\";
    }
    
    # 日志配置
    access_log /data/logs/nginx/emotion-museum-access.log;
    error_log /data/logs/nginx/emotion-museum-error.log;
}
EOF"
    
    # 启用站点
    ssh $REMOTE_HOST "
        ln -sf /etc/nginx/sites-available/emotion-museum /etc/nginx/sites-enabled/
        nginx -t && systemctl reload nginx
    " 2>/dev/null || log_warning "Nginx配置可能需要手动检查"
    
    log_success "Nginx配置完成"
}

# 健康检查
health_check() {
    log_info "执行健康检查..."
    
    sleep 3
    
    # 检查前端页面
    if curl -f -s "http://47.111.10.27/emotion-museum/" > /dev/null 2>&1; then
        log_success "前端页面访问正常"
    else
        log_warning "前端页面访问异常，请检查Nginx配置"
    fi
    
    # 检查API代理
    if curl -f -s "http://47.111.10.27/api/user/health" > /dev/null 2>&1; then
        log_success "API代理正常"
    else
        log_warning "API代理异常，请检查后端服务状态"
    fi
}

# 显示部署报告
show_deployment_report() {
    local total_time=$1
    
    echo ""
    echo "========================================"
    echo "         前端部署完成报告"
    echo "========================================"
    echo "项目名称: $PROJECT_NAME"
    echo "目标服务器: $REMOTE_HOST"
    echo "部署路径: $REMOTE_WEB_DIR/$FRONTEND_DIR"
    echo "部署时间: $(date '+%Y-%m-%d %H:%M:%S')"
    echo "总耗时: ${total_time}s"
    if [ "$BUILD_NUMBER" != "manual" ]; then
        echo "Jenkins构建: #$BUILD_NUMBER"
        echo "Jenkins任务: $JOB_NAME"
        [ -n "$BUILD_URL" ] && echo "构建链接: $BUILD_URL"
    fi
    echo "========================================"
    
    echo ""
    echo "🌐 访问地址:"
    echo "  前端页面: http://47.111.10.27/emotion-museum/"
    echo "  API接口: http://47.111.10.27/api/"
    
    echo ""
    echo "📁 远程文件信息:"
    ssh $REMOTE_HOST "
        echo '部署目录大小:'
        du -sh '$REMOTE_WEB_DIR/$FRONTEND_DIR' 2>/dev/null || echo '无法获取目录大小'
        echo ''
        echo '主要文件:'
        ls -la '$REMOTE_WEB_DIR/$FRONTEND_DIR' 2>/dev/null | head -10 || echo '无法列出文件'
    "
    
    echo ""
    echo "========================================"
    echo "🎉 前端部署完成！"
}

# 主函数
main() {
    local start_time=$(date +%s)
    
    log_info "🚀 开始前端部署..."
    log_info "目标服务器: $REMOTE_HOST"
    log_info "部署路径: $REMOTE_WEB_DIR/$FRONTEND_DIR"
    
    # 检查环境
    if ! check_local_environment; then
        log_error "本地环境检查失败"
        exit 1
    fi
    
    if ! check_remote_connection; then
        log_error "远程服务器连接失败"
        exit 1
    fi
    
    # 安装依赖
    install_dependencies
    
    # 构建项目
    build_frontend
    
    # 创建远程目录
    create_remote_directories
    
    # 备份旧版本
    backup_old_version
    
    # 部署文件
    deploy_frontend
    
    # 配置Nginx
    configure_nginx
    
    # 健康检查
    health_check
    
    # 计算总耗时
    local end_time=$(date +%s)
    local total_time=$((end_time - start_time))
    
    # 显示报告
    show_deployment_report $total_time
    
    log_success "🎉 前端部署完成！"
}

# 执行主函数
main "$@"