amberjs 1.17.0

// V8 API 适配层
//
// Stage 96 Phase 1: V8 API 兼容性完善
// 提供向后兼容性和 API 适配功能
//
// 该模块实现了一个适配层，允许旧版本的 V8 API 在新版本上运行，
// 并提供自动迁移和兼容性检查功能。

use serde::{Deserialize, Serialize};
use std::collections::{BTreeMap, HashMap};
use std::sync::{Arc, Mutex, RwLock};
use anyhow::{Result, Error};

/// API 适配器配置
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct AdapterConfig {
    /// 是否启用自动适配
    pub auto_adapt: bool,
    /// 适配模式: "legacy", "modern", "hybrid"
    pub mode: String,
    /// 是否启用详细日志
    pub verbose_logging: bool,
    /// 适配超时时间 (毫秒)
    pub timeout_ms: u64,
    /// 最大重试次数
    pub max_retries: u32,
}
impl Default for AdapterConfig {
    fn default() -> Self {
        Self {
            auto_adapt: true,
            mode: "hybrid".to_string(),
            verbose_logging: false,
            timeout_ms: 5000,
            max_retries: 3,
        }
    }
}
/// API 适配器项
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct AdapterItem {
    /// 原始 API 名称
    pub original_name: String,
    /// 目标 API 名称
    pub target_name: String,
    /// 适配类型
    pub adapter_type: AdapterType,
    /// 转换函数
    pub converter: String,
    /// 是否已验证
    pub verified: bool,
    /// 性能影响评估
    pub performance_impact: PerformanceImpact,
}
/// 适配类型
#[derive(Debug, Clone, Serialize, Deserialize, PartialEq)]
pub enum AdapterType {
    /// 名称映射 (简单重命名)
    NameMapping,
    /// 参数转换
    ParameterConversion,
    /// 返回值转换
    ReturnConversion,
    /// 完整重写
    CompleteRewrite,
    /// 包装器 (添加额外功能)
    Wrapper,
    /// 代理 (委托给新 API)
    Proxy,
}
/// 性能影响评估
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct PerformanceImpact {
    /// CPU 开销百分比
    pub cpu_overhead_percent: f64,
    /// 内存开销 (字节)
    pub memory_overhead_bytes: usize,
    /// 延迟增加 (纳秒)
    pub latency_ns: u64,
    /// 影响等级
    pub impact_level: ImpactLevel,
}
/// 影响等级
#[derive(Debug, Clone, Serialize, Deserialize, PartialEq)]
pub enum ImpactLevel {
    Negligible, // < 1%
    Low,        // 1-5%
    Medium,     // 5-15%
    High,       // 15-30%
    Critical,   // > 30%
}
/// 适配结果
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct AdaptationResult {
    /// 适配是否成功
    pub success: bool,
    /// 适配后的 API 名称
    pub adapted_name: String,
    /// 性能影响
    pub performance_impact: PerformanceImpact,
    /// 错误信息 (如果有)
    pub error_message: Option<String>,
    /// 验证状态
    pub verification_status: VerificationStatus,
}
/// 验证状态
#[derive(Debug, Clone, Serialize, Deserialize, PartialEq)]
pub enum VerificationStatus {
    NotVerified,
    Verified,
    Failed,
    Skipped,
}
/// 适配统计
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct AdaptationStats {
    /// 总适配项数量
    pub total_adapters: usize,
    /// 成功适配数量
    pub successful_adapters: usize,
    /// 失败的适配数量
    pub failed_adapters: usize,
    /// 跳过的适配数量
    pub skipped_adapters: usize,
    /// 平均性能影响
    pub avg_performance_impact: f64,
    /// 总性能影响
    pub total_performance_impact: f64,
}
/// V8 API 适配器
pub struct V8APIAdapter {
    /// 配置
    config: AdapterConfig,
    /// 适配器映射
    adapters: Arc<RwLock<HashMap<String, AdapterItem>>>,
    /// 统计信息
    stats: Arc<RwLock<AdaptationStats>>,
}
impl V8APIAdapter {
    /// 创建新的 API 适配器
    pub fn new(config: AdapterConfig) -> Self {
        let mut adapter = Self {
            config,
            adapters: Arc::new(Mutex::new(HashMap::new())),
            stats: Arc::new(Mutex::new(AdaptationStats {
                total_adapters: 0,
                successful_adapters: 0,
                failed_adapters: 0,
                skipped_adapters: 0,
                avg_performance_impact: 0.0,
                total_performance_impact: 0.0,
            })),
        };
        // 初始化内置适配器
        adapter.initialize_builtin_adapters();
        adapter
    }
    /// 使用默认配置创建
    pub fn new_with_default_config() -> Self {
        Self::new(AdapterConfig::default())
    }
    /// 初始化内置适配器
    fn initialize_builtin_adapters(&mut self) {
        // OldContext -> V8Context
        self.register_adapter(AdapterItem {
            original_name: "OldContext".to_string(),
            target_name: "V8Context".to_string(),
            adapter_type: AdapterType::NameMapping,
            converter: "identity".to_string(),
            verified: true,
            performance_impact: PerformanceImpact {
                cpu_overhead_percent: 0.0,
                memory_overhead_bytes: 0,
                latency_ns: 0,
                impact_level: ImpactLevel::Negligible,
            },
        });
        // HandleScope::Empty -> HandleScope::New
        self.register_adapter(AdapterItem {
            original_name: "HandleScope::Empty".to_string(),
            target_name: "HandleScope::New".to_string(),
            adapter_type: AdapterType::NameMapping,
            converter: "identity".to_string(),
            verified: true,
            performance_impact: PerformanceImpact {
                cpu_overhead_percent: 0.0,
                memory_overhead_bytes: 0,
                latency_ns: 0,
                impact_level: ImpactLevel::Negligible,
            },
        });
        // V8::Initialize -> V8::init_once
        self.register_adapter(AdapterItem {
            original_name: "V8::Initialize".to_string(),
            target_name: "V8::init_once".to_string(),
            adapter_type: AdapterType::NameMapping,
            converter: "identity".to_string(),
            verified: true,
            performance_impact: PerformanceImpact {
                cpu_overhead_percent: 0.0,
                memory_overhead_bytes: 0,
                latency_ns: 0,
                impact_level: ImpactLevel::Negligible,
            },
        });
        // String::New -> String::new (如果需要)
        self.register_adapter(AdapterItem {
            original_name: "String::New".to_string(),
            target_name: "String::new".to_string(),
            adapter_type: AdapterType::ParameterConversion,
            converter: "string_new_converter".to_string(),
            verified: false,
            performance_impact: PerformanceImpact {
                cpu_overhead_percent: 1.0,
                memory_overhead_bytes: 16,
                latency_ns: 100,
                impact_level: ImpactLevel::Low,
            },
        });
        // Object::New -> Object::create
        self.register_adapter(AdapterItem {
            original_name: "Object::New".to_string(),
            target_name: "Object::create".to_string(),
            adapter_type: AdapterType::ParameterConversion,
            converter: "object_new_converter".to_string(),
            verified: false,
            performance_impact: PerformanceImpact {
                cpu_overhead_percent: 2.0,
                memory_overhead_bytes: 32,
                latency_ns: 200,
                impact_level: ImpactLevel::Low,
            },
        });
        // Function::New -> Function::create
        self.register_adapter(AdapterItem {
            original_name: "Function::New".to_string(),
            target_name: "Function::create".to_string(),
            adapter_type: AdapterType::ReturnConversion,
            converter: "function_new_converter".to_string(),
            verified: false,
            performance_impact: PerformanceImpact {
                cpu_overhead_percent: 1.5,
                memory_overhead_bytes: 24,
                latency_ns: 150,
                impact_level: ImpactLevel::Low,
            },
        });
        // Array::New -> Array::with_length
        self.register_adapter(AdapterItem {
            original_name: "Array::New".to_string(),
            target_name: "Array::with_length".to_string(),
            adapter_type: AdapterType::ParameterConversion,
            converter: "array_new_converter".to_string(),
            verified: false,
            performance_impact: PerformanceImpact {
                cpu_overhead_percent: 1.0,
                memory_overhead_bytes: 16,
                latency_ns: 100,
                impact_level: ImpactLevel::Low,
            },
        });
    }
    /// 注册新的适配器
    pub fn register_adapter(&mut self, adapter: AdapterItem) {
        let adapters: _ = Arc::get_mut(&mut self.adapters).unwrap();
        let mut adapters_map = adapters.try_write().unwrap();
        adapters_map.insert(adapter.original_name.clone(), adapter);
        // 更新统计
        let stats: _ = Arc::get_mut(&mut self.stats).unwrap();
        let mut stats_map = stats.try_write().unwrap();
        stats_map.total_adapters += 1;
    }
    /// 适配 API 调用
    pub async fn adapt_api_call(&self, original_api: &str, parameters: serde_json::Value) -> AdaptationResult {
        let adapters: _ = self.adapters.read().await;
        if let Some(adapter) = adapters.get(original_api) {
            // 执行适配
            match adapter.adapter_type {
                AdapterType::NameMapping => {
                    AdaptationResult {
                        success: true,
                        adapted_name: adapter.target_name.clone(),
                        performance_impact: adapter.performance_impact.clone(),
                        error_message: None,
                        verification_status: if adapter.verified {
                            VerificationStatus::Verified
                        } else {
                            VerificationStatus::NotVerified
                        },
                    }
                }
                AdapterType::ParameterConversion => {
                    // 参数转换逻辑
                    let converted_params: _ = self.convert_parameters(original_api, parameters).await;
                    AdaptationResult {
                        success: converted_params.is_ok(),
                        adapted_name: adapter.target_name.clone(),
                        performance_impact: adapter.performance_impact.clone(),
                        error_message: converted_params.err().map(|e| e.to_string()),
                        verification_status: VerificationStatus::Verified,
                    }
                }
                AdapterType::ReturnConversion => {
                    // 返回值转换逻辑
                    AdaptationResult {
                        success: true,
                        adapted_name: adapter.target_name.clone(),
                        performance_impact: adapter.performance_impact.clone(),
                        error_message: None,
                        verification_status: VerificationStatus::Verified,
                    }
                }
                AdapterType::CompleteRewrite => {
                    AdaptationResult {
                        success: true,
                        adapted_name: adapter.target_name.clone(),
                        performance_impact: adapter.performance_impact.clone(),
                        error_message: None,
                        verification_status: VerificationStatus::Verified,
                    }
                }
                AdapterType::Wrapper => {
                    // 包装器逻辑
                    AdaptationResult {
                        success: true,
                        adapted_name: format!("{}_wrapper", adapter.target_name),
                        performance_impact: adapter.performance_impact.clone(),
                        error_message: None,
                        verification_status: VerificationStatus::Verified,
                    }
                }
                AdapterType::Proxy => {
                    // 代理逻辑
                    AdaptationResult {
                        success: true,
                        adapted_name: adapter.target_name.clone(),
                        performance_impact: adapter.performance_impact.clone(),
                        error_message: None,
                        verification_status: VerificationStatus::Verified,
                    }
                }
            }
        } else {
            // 没有找到适配器，返回原始 API
            AdaptationResult {
                success: false,
                adapted_name: original_api.to_string(),
                performance_impact: PerformanceImpact {
                    cpu_overhead_percent: 0.0,
                    memory_overhead_bytes: 0,
                    latency_ns: 0,
                    impact_level: ImpactLevel::Negligible,
                },
                error_message: Some(format!("No adapter found for API: {}", original_api)),
                verification_status: VerificationStatus::NotVerified,
            }
        }
    }
    /// 参数转换
    async fn convert_parameters(&self, api_name: &str, params: serde_json::Value) -> Result<serde_json::Value, anyhow::Error> {
        match api_name {
            "String::New" => {
                // 模拟参数转换
                Ok(serde_json::json!({
                    "value": params,
                    "encoding": "utf8"
                }))
            }
            "Object::New" => {
                // 模拟对象创建参数转换
                Ok(serde_json::json!({
                    "properties": params
                }))
            }
            "Array::New" => {
                // 模拟数组创建参数转换
                Ok(serde_json::json!({
                    "length": params
                }))
            }
            _ => Ok(params),
        }
    }
    /// 检查 API 是否需要适配
    pub async fn needs_adaptation(&self, api_name: &str) -> bool {
        let adapters: _ = self.adapters.read().await;
        adapters.contains_key(api_name)
    }
    /// 获取适配器信息
    pub async fn get_adapter_info(&self, api_name: &str) -> Option<AdapterItem> {
        let adapters: _ = self.adapters.read().await;
        adapters.get(api_name).cloned()
    }
    /// 获取所有适配器
    pub async fn get_all_adapters(&self) -> HashMap<String, AdapterItem> {
        let adapters: _ = self.adapters.read().await;
        adapters.clone()
    }
    /// 获取统计信息
    pub async fn get_stats(&self) -> AdaptationStats {
        let stats: _ = self.stats.read().await;
        stats.clone()
    }
    /// 验证适配器
    pub async fn verify_adapter(&self, api_name: &str) -> Result<bool, anyhow::Error> {
        let adapters: _ = self.adapters.read().await;
        if let Some(adapter) = adapters.get(api_name) {
            // 这里可以实现实际的验证逻辑
            // 例如：编译测试、检查 API 签名等
            let mut adapter_mut = adapter.clone();
            adapter_mut.verified = true;
            drop(adapters);
            // 更新验证状态
            let mut adapters_map = self.adapters.write().await;
            adapters_map.insert(api_name.to_string(), adapter_mut);
            Ok(true)
        } else {
            Ok(false)
        }
    }
    /// 批量验证所有适配器
    pub async fn verify_all_adapters(&self) -> Result<Vec<String>, anyhow::Error> {
        let adapters: _ = self.adapters.read().await;
        let api_names: Vec<String> = adapters.keys().cloned().collect();
        drop(adapters);
        let mut verified = Vec::new();
        for api_name in api_names {
            if self.verify_adapter(&api_name).await? {
                verified.push(api_name);
            }
        }
        Ok(verified)
    }
    /// 移除适配器
    pub async fn remove_adapter(&mut self, api_name: &str) -> bool {
        let adapters: _ = Arc::get_mut(&mut self.adapters).unwrap();
        let mut adapters_map = adapters.try_write().unwrap();
        adapters_map.remove(api_name).is_some()
    }
    /// 清除所有适配器
    pub async fn clear_adapters(&mut self) {
        let adapters: _ = Arc::get_mut(&mut self.adapters).unwrap();
        let mut adapters_map = adapters.try_write().unwrap();
        adapters_map.clear();
    }
    /// 导出适配器配置
    pub async fn export_config(&self) -> Result<String, anyhow::Error> {
        let adapters: _ = self.adapters.read().await;
        let config_data: _ = serde_json::to_string_pretty(&(*adapters))?;
        Ok(config_data)
    }
    /// 导入适配器配置
    pub async fn import_config(&mut self, config_json: &str) -> Result<(), anyhow::Error> {
        let adapters: HashMap<String, AdapterItem> = serde_json::from_str(config_json)?;
        let mut adapters_map = self.adapters.try_write().unwrap();
        *adapters_map = adapters;
        Ok(())
    }
    /// 生成适配报告
    pub async fn generate_report(&self) -> Result<AdaptationReport, anyhow::Error> {
        let adapters: _ = self.adapters.read().await;
        let stats: _ = self.get_stats().await;
        let mut adapter_list = Vec::new();
        for (name, adapter) in adapters.iter() {
            adapter_list.push(AdapterReportItem {
                name: name.clone(),
                target: adapter.target_name.clone(),
                adapter_type: adapter.adapter_type.clone(),
                verified: adapter.verified,
                performance_impact: adapter.performance_impact.clone(),
            });
        }
        Ok(AdaptationReport {
            total_adapters: stats.total_adapters,
            verified_adapters: adapter_list.iter().filter(|a| a.verified).count(),
            adapter_list,
            recommendations: self.generate_recommendations().await,
        })
    }
    /// 生成建议
    async fn generate_recommendations(&self) -> Vec<String> {
        let mut recommendations = Vec::new();
        let adapters: _ = self.adapters.read().await;
        let unverified_count: _ = adapters.values().filter(|a| !a.verified).count();
        if unverified_count > 0 {
            recommendations.push(format!("⚠️  有 {} 个适配器未验证，建议运行验证", unverified_count));
        }
        let high_impact_count: _ = adapters.values()
            .filter(|a| matches!(a.performance_impact.impact_level, ImpactLevel::High | ImpactLevel::Critical))
            .count();
        if high_impact_count > 0 {
            recommendations.push(format!("⚡  有 {} 个适配器性能影响较大，请谨慎使用", high_impact_count));
        }
        recommendations.push("✅ 定期验证适配器确保兼容性".to_string());
        recommendations.push("📊 监控适配器性能影响".to_string());
        recommendations
    }
}
/// 适配报告
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct AdaptationReport {
    pub total_adapters: usize,
    pub verified_adapters: usize,
    pub adapter_list: Vec<AdapterReportItem>,
    pub recommendations: Vec<String>,
}
/// 适配器报告项
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct AdapterReportItem {
    pub name: String,
    pub target: String,
    pub adapter_type: AdapterType,
    pub verified: bool,
    pub performance_impact: PerformanceImpact,
}
impl Default for V8APIAdapter {
    fn default() -> Self {
        Self::new_with_default_config()
    }
}
#[cfg(test)]
mod tests {
    #[tokio::test]
    async fn test_v8_api_adapter_creation() {
        let adapter: _ = V8APIAdapter::new_with_default_config();
        let stats: _ = adapter.get_stats().await;
        assert!(stats.total_adapters > 0);
    }
    #[tokio::test]
    async fn test_register_adapter() {
        let mut adapter = V8APIAdapter::new_with_default_config();
        let initial_count: _ = adapter.get_stats().await.total_adapters;
        adapter.register_adapter(AdapterItem {
            original_name: "TestAPI".to_string(),
            target_name: "TestAPI2".to_string(),
            adapter_type: AdapterType::NameMapping,
            converter: "identity".to_string(),
            verified: true,
            performance_impact: PerformanceImpact {
                cpu_overhead_percent: 0.0,
                memory_overhead_bytes: 0,
                latency_ns: 0,
                impact_level: ImpactLevel::Negligible,
            },
        });
        let new_count: _ = adapter.get_stats().await.total_adapters;
        assert_eq!(new_count, initial_count + 1);
    }
    #[tokio::test]
    async fn test_adapt_api_call() {
        let adapter: _ = V8APIAdapter::new_with_default_config();
        let result: _ = adapter.adapt_api_call("OldContext", serde_json::json!({})).await;
        assert!(result.success);
        assert_eq!(result.adapted_name, "V8Context");
    }
    #[tokio::test]
    async fn test_needs_adaptation() {
        let adapter: _ = V8APIAdapter::new_with_default_config();
        assert!(adapter.needs_adaptation("OldContext").await);
        assert!(!adapter.needs_adaptation("NonExistentAPI").await);
    }
    #[tokio::test]
    async fn test_verify_adapter() {
        let adapter: _ = V8APIAdapter::new_with_default_config();
        let result: _ = adapter.verify_adapter("OldContext").await;
        assert!(result.is_ok());
    }
    #[tokio::test]
    async fn test_generate_report() {
        let adapter: _ = V8APIAdapter::new_with_default_config();
        let report: _ = adapter.generate_report().await.unwrap();
        assert!(report.total_adapters > 0);
        assert!(!report.recommendations.is_empty());
    }
}