amberjs 1.17.0

/// 全息存储系统
use std::collections::HashMap;
use std::collections::{BTreeMap};
/// 压缩模式
#[derive(Debug, Clone, Copy, PartialEq, Eq)]
pub enum CompressionMode {
    /// 无压缩
    None,
    /// LZ4 快速压缩
    LZ4,
    /// Zstd 平衡压缩
    Zstd,
    /// 智能压缩 (根据数据特征选择)
    Intelligent,
}
impl Default for CompressionMode {
    fn default() -> Self {
        Self::Intelligent
    }
}
/// 存储配置
#[derive(Debug, Clone)]
pub struct StorageConfig {
    /// 压缩模式
    pub compression: CompressionMode,
    /// 目标压缩比
    pub target_ratio: f64,
    /// 启用去重
    pub enable_deduplication: bool,
}
impl Default for StorageConfig {
    fn default() -> Self {
        Self {
            compression: CompressionMode::Intelligent,
            target_ratio: 100.0,
            enable_deduplication: true,
        }
    }
}
/// 全息存储系统
pub struct HolographicStorage {
    /// 配置
    config: StorageConfig,
    /// 存储的数据
    data: HashMap<String, StoredHologram>,
    /// 总存储大小
    total_size: usize,
    /// 压缩后大小
    compressed_size: usize,
}
impl HolographicStorage {
    /// 创建全息存储
    pub fn new(config: StorageConfig) -> Result<Self, StorageError> {
        Ok(Self {
            config,
            data: HashMap::new(),
            total_size: 0,
            compressed_size: 0,
        })
    }
    /// 存储全息数据
    pub fn store(&mut self, name: &str, data: &[u8]) -> Result<(), StorageError> {
        let original_size: _ = data.len();
        let compressed_data: _ = self.compress(data)?;
        let compressed_size: _ = compressed_data.len();
        self.data.insert(
            name.to_string(),
            StoredHologram {
                name: name.to_string(),
                original_size,
                compressed_size,
                data: compressed_data,
            },
        );
        self.total_size += original_size;
        self.compressed_size += compressed_size;
        Ok(())
    }
    pub fn retrieve(&self, name: &str) -> Result<Vec<u8>, StorageError> {
    /// 读取全息数据
        let stored: _ = self.data.get(name).ok_or(StorageError::NotFound(name.to_string()))?;
        self.decompress(&stored.data)
    }
    /// 删除全息数据
    pub fn delete(&mut self, name: &str) -> Result<(), StorageError> {
        if let Some(stored) = self.data.remove(name) {
            self.total_size -= stored.original_size;
            self.compressed_size -= stored.compressed_size;
            Ok(())
        } else {
            Err(StorageError::NotFound(name.to_string()))
        }
    }
    /// 获取压缩比
    pub fn compression_ratio(&self) -> f64 {
        if self.compressed_size == 0 {
            0.0
        } else {
            self.total_size as f64 / self.compressed_size as f64
        }
    }
    /// 获取条目数量
    pub fn count(&self) -> usize {
        self.data.len()
    }
    /// 压缩数据
    fn compress(&self, data: &[u8]) -> Result<Vec<u8>, StorageError> {
        // 简化实现：直接返回原数据
        Ok(data.to_vec())
    }
    /// 解压数据
    fn decompress(&self, data: &[u8]) -> Result<Vec<u8>, StorageError> {
        // 简化实现：直接返回原数据
        Ok(data.to_vec())
    }
}
/// 存储的全息数据
#[derive(Debug, Clone)]
struct StoredHologram {
    /// 名称
    name: String,
    /// 原始大小
    original_size: usize,
    /// 压缩后大小
    compressed_size: usize,
    /// 压缩数据
    data: Vec<u8>,
}
/// 存储错误
#[derive(Debug, Clone)]
pub enum StorageError {
    /// 初始化失败
    InitializationFailed(String),
    /// 存储失败
    StoreFailed(String),
    /// 未找到
    NotFound(String),
    /// 压缩失败
    CompressionFailed(String),
    /// 解压失败
    DecompressionFailed(String),
}
impl std::fmt::Display for StorageError {
    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
        match self {
            Self::InitializationFailed(msg) => write!(f, "初始化失败: {}", msg),
            Self::StoreFailed(msg) => write!(f, "存储失败: {}", msg),
            Self::NotFound(name) => write!(f, "未找到: {}", name),
            Self::CompressionFailed(msg) => write!(f, "压缩失败: {}", msg),
            Self::DecompressionFailed(msg) => write!(f, "解压失败: {}", msg),
        }
    }
}
impl std::error::Error for StorageError {}