#!/bin/bash
# 胡汉三千年统一文档管理系统启动脚本

# 设置颜色输出
RED='\033[0;31m'
GREEN='\033[0;32m'
YELLOW='\033[1;33m'
BLUE='\033[0;34m'
NC='\033[0m' # No Color

# 项目根目录
PROJECT_ROOT="/home/ben/code/huhan3000"
UNIFIED_DOCS="$PROJECT_ROOT/unified-docs"
TOOLS_DIR="$UNIFIED_DOCS/tools"

# 函数：打印彩色消息
print_info() {
    echo -e "${BLUE}[INFO]${NC} $1"
}

print_success() {
    echo -e "${GREEN}[SUCCESS]${NC} $1"
}

print_warning() {
    echo -e "${YELLOW}[WARNING]${NC} $1"
}

print_error() {
    echo -e "${RED}[ERROR]${NC} $1"
}

# 函数：检查依赖
check_dependencies() {
    print_info "检查系统依赖..."
    
    # 检查Python
    if command -v python3 &> /dev/null; then
        print_success "Python3 已安装"
    else
        print_error "Python3 未安装，请先安装Python3"
        exit 1
    fi
    
    # 检查必要的Python包
    REQUIRED_PACKAGES=("hashlib" "json" "pathlib" "shutil" "datetime")
    for package in "${REQUIRED_PACKAGES[@]}"; do
        python3 -c "import $package" 2>/dev/null
        if [ $? -eq 0 ]; then
            print_success "Python包 $package 可用"
        else
            print_error "Python包 $package 不可用"
            exit 1
        fi
    done
}

# 函数：显示系统状态
show_system_status() {
    print_info "=== 系统状态 ==="
    
    # 检查工具文件
    TOOLS=("doc-indexer.py" "search-tool.py" "version-manager.py" "doc-migrator.py")
    for tool in "${TOOLS[@]}"; do
        if [ -f "$TOOLS_DIR/$tool" ]; then
            print_success "工具 $tool 存在"
        else
            print_error "工具 $tool 不存在"
        fi
    done
    
    # 检查配置文件
    if [ -f "$UNIFIED_DOCS/config/settings.json" ]; then
        print_success "配置文件存在"
    else
        print_error "配置文件不存在"
    fi
    
    # 检查文档数量
    DOC_COUNT=$(find "$UNIFIED_DOCS" -name "*.md" -o -name "*.txt" | wc -l)
    print_info "当前文档数量: $DOC_COUNT"
    
    # 检查版本数据库
    if [ -f "$UNIFIED_DOCS/.versions/version-db.json" ]; then
        print_success "版本数据库存在"
    else
        print_warning "版本数据库不存在（首次运行）"
    fi
}

# 函数：更新文档索引
update_index() {
    print_info "更新文档索引..."
    cd "$UNIFIED_DOCS"
    python3 "$TOOLS_DIR/doc-indexer.py"
    
    if [ $? -eq 0 ]; then
        print_success "文档索引更新完成"
    else
        print_error "文档索引更新失败"
    fi
}

# 函数：搜索文档
search_documents() {
    if [ -z "$1" ]; then
        print_error "请提供搜索关键词"
        return 1
    fi
    
    print_info "搜索文档: $1"
    cd "$UNIFIED_DOCS"
    python3 "$TOOLS_DIR/search-tool.py" "$1"
}

# 函数：迁移文档
migrate_documents() {
    print_info "开始文档迁移..."
    
    # 先进行模拟迁移
    print_info "模拟迁移检查..."
    cd "$UNIFIED_DOCS"
    python3 "$TOOLS_DIR/doc-migrator.py" migrate --dry-run
    
    # 询问是否继续实际迁移
    read -p "是否继续实际迁移？(y/N): " -n 1 -r
    echo
    if [[ $REPLY =~ ^[Yy]$ ]]; then
        print_info "开始实际迁移..."
        python3 "$TOOLS_DIR/doc-migrator.py" migrate
        
        if [ $? -eq 0 ]; then
            print_success "文档迁移完成"
            # 迁移后更新索引
            update_index
        else
            print_error "文档迁移失败"
        fi
    else
        print_info "迁移已取消"
    fi
}

# 函数：显示版本统计
show_version_stats() {
    print_info "显示版本统计..."
    cd "$UNIFIED_DOCS"
    python3 "$TOOLS_DIR/version-manager.py" stats
}

# 函数：显示帮助信息
show_help() {
    echo -e "${BLUE}胡汉三千年统一文档管理系统${NC}"
    echo "用法: $0 [命令]"
    echo ""
    echo "可用命令:"
    echo "  status        - 显示系统状态"
    echo "  index         - 更新文档索引"
    echo "  search <关键词> - 搜索文档"
    echo "  migrate       - 迁移文档到统一系统"
    echo "  versions      - 显示版本统计"
    echo "  help          - 显示此帮助信息"
    echo ""
    echo "示例:"
    echo "  $0 status"
    echo "  $0 search 音韵"
    echo "  $0 migrate"
}

# 主函数
main() {
    # 检查项目目录
    if [ ! -d "$PROJECT_ROOT" ]; then
        print_error "项目根目录不存在: $PROJECT_ROOT"
        exit 1
    fi
    
    if [ ! -d "$UNIFIED_DOCS" ]; then
        print_error "统一文档目录不存在: $UNIFIED_DOCS"
        exit 1
    fi
    
    # 检查依赖
    check_dependencies
    
    # 处理命令
    case "$1" in
        "status")
            show_system_status
            ;;
        "index")
            update_index
            ;;
        "search")
            if [ -z "$2" ]; then
                print_error "请提供搜索关键词"
                show_help
                exit 1
            fi
            search_documents "$2"
            ;;
        "migrate")
            migrate_documents
            ;;
        "versions")
            show_version_stats
            ;;
        "help"|"")
            show_help
            ;;
        *)
            print_error "未知命令: $1"
            show_help
            exit 1
            ;;
    esac
}

# 执行主函数
main "$@"