use serde::{Deserialize, Serialize};
use std::collections::{BTreeMap, HashMap};
use std::io::{Read, Write};
use std::sync::{Arc, Mutex, RwLock};
use std::fs::File;
use std::time::Duration;
use std::time::SystemTime;
use std::path::PathBuf;
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct Script {
pub name: String,
pub content: String,
pub version: String,
pub timestamp: std::time::SystemTime,
}
#[derive(Debug, Clone, Serialize, Deserialize)]
struct CacheMetadata {
script: Script,
expiration: Option<Duration>,
size_bytes: u64,
access_count: u64,
last_accessed: std::time::SystemTime,
}
#[derive(Debug)]
pub struct LocalCodeCache {
cache_dir: PathBuf,
index: Arc<RwLock<HashMap<String, CacheMetadata>>>,
compressor: Arc<Compressor>,
}
#[derive(Debug)]
pub struct Compressor {
enabled: bool,
}
impl Compressor {
pub fn new(enabled: bool) -> Self {
Compressor { enabled }
}
pub async fn compress(&self, data: &[u8]) -> Result<Vec<u8> {
if self.enabled {
Ok(data.to_vec())
} else {
Ok(data.to_vec())
}
}
pub async fn decompress(&self, data: &[u8]) -> Result<Vec<u8> {
if self.enabled {
Ok(data.to_vec())
} else {
Ok(data.to_vec())
}
}
}
impl LocalCodeCache {
pub async fn new(cache_dir: PathBuf) -> Result<Self> {
tokio::fs::create_dir_all(&cache_dir).await?;
let cache: _ = LocalCodeCache {
cache_dir: cache_dir.clone(),
index: Arc::new(Mutex::new(HashMap::new()))
compressor: Arc::new(Mutex::new(Compressor::new(true)))
};
cache.load_index().await?;
Ok(cache)
}
pub fn cache_dir(&self) -> &PathBuf {
&self.cache_dir
}
pub async fn store_script(&self, key: &str, script: &Script) -> Result<()> {
let index_path: _ = self.cache_dir.join("index.json");
let script_path: _ = self.cache_dir.join(format!("{}.json", key));
let script_json: _ = serde_json::to_string(script)?;
let compressed: _ = self.compressor.compress(script_json.as_bytes()).await?;
let mut file = File::create(&script_path)?;
file.write_all(&compressed)?;
let metadata: _ = CacheMetadata {
script: script.clone(),
expiration: None,
size_bytes: compressed.len() as u64,
access_count: 0,
last_accessed: std::time::SystemTime::now(),
};
let mut index = self.index.write().await;
index.insert(key.to_string(), metadata);
self.save_index().await?;
println!("Cached script '{}' ({} bytes)", key, compressed.len());
Ok(())
}
pub async fn load_script(&self, key: &str) -> Result<Option<Script>> {
let script_path: _ = self.cache_dir.join(format!("{}.json", key));
if !script_path.exists() {
return Ok(None);
}
let mut file = File::open(&script_path)?;
let mut compressed = Vec::new();
file.read_to_end(&mut compressed)?;
let decompressed: _ = self.compressor.decompress(&compressed).await?;
let script: Script = serde_json::from_slice(&decompressed)?;
{
let mut index = self.index.write().await;
if let Some(metadata) = index.get_mut(key) {
metadata.access_count += 1;
metadata.last_accessed = std::time::SystemTime::now();
}
}
println!("Loaded cached script '{}'", key);
Ok(Some(script))
}
pub async fn set_expiration(&self, key: &str, expiration: Duration) -> Result<()> {
let mut index = self.index.write().await;
if let Some(metadata) = index.get_mut(key) {
metadata.expiration = Some(expiration);
self.save_index().await?;
}
Ok(())
}
pub async fn cleanup_expired(&self) -> Result<u64> {
let mut index = self.index.write().await;
let mut removed_count = 0;
let now: _ = std::time::SystemTime::now();
let to_remove: Vec<String> = index
.iter()
.filter(|(_, metadata)| {
if let Some(expiration) = metadata.expiration {
if let Ok(elapsed) = now.duration_since(metadata.last_accessed) {
elapsed > expiration
} else {
false
}
} else {
false
}
})
.map(|(key, _)| key.clone())
.collect();
for key in &to_remove {
let script_path: _ = self.cache_dir.join(format!("{}.json", key));
let _: _ = tokio::fs::remove_file(&script_path).await;
index.remove(key);
removed_count += 1;
}
if removed_count > 0 {
self.save_index().await?;
}
println!("Cleaned up {} expired cache entries", removed_count);
Ok(removed_count)
}
pub async fn get_stats(&self) -> Result<CacheStats> {
let index: _ = self.index.read().await;
let total_scripts: _ = index.len();
let total_size: u64 = index.values().map(|m| m.size_bytes).sum();
let total_access: u64 = index.values().map(|m| m.access_count).sum();
Ok(CacheStats {
total_scripts,
total_size_bytes: total_size,
total_accesses: total_access,
})
}
async fn load_index(&self) -> Result<()> {
let index_path: _ = self.cache_dir.join("index.json");
if !index_path.exists() {
return Ok(());
}
let mut file = File::open(&index_path)?;
let mut contents = String::new();
file.read_to_string(&mut contents)?;
let loaded_index: HashMap<String, CacheMetadata> = serde_json::from_str(&contents)?;
let mut index = self.index.write().await;
index.extend(loaded_index);
println!("Loaded cache index with {} entries", index.len());
Ok(())
}
async fn save_index(&self) -> Result<()> {
let index_path: _ = self.cache_dir.join("index.json");
let index: _ = self.index.read().await;
let contents: _ = serde_json::to_string(&*index)?;
let mut file = File::create(&index_path)?;
file.write_all(contents.as_bytes())?;
Ok(())
}
}
#[derive(Debug, Clone)]
pub struct CacheStats {
pub total_scripts: usize,
pub total_size_bytes: u64,
pub total_accesses: u64,
}
#[derive(Debug)]
pub struct OfflineDataStore {
db_path: PathBuf,
data: Arc<RwLock<HashMap<String, Vec<u8>>>,
}
#[derive(Debug, Clone)]
pub struct SyncResult {
pub synced_items: u64,
pub failed_items: u64,
pub errors: Vec<String>,
}
#[derive(Debug, Clone)]
pub struct Conflict {
pub key: String,
pub local_value: Vec<u8>,
pub remote_value: Vec<u8>,
pub timestamp: std::time::SystemTime,
}
#[derive(Debug, Clone)]
pub struct Resolution {
pub key: String,
pub resolved: bool,
pub strategy: String,
pub value: Option<Vec<u8>>,
}
#[derive(Debug, Clone)]
pub enum MergeStrategy {
LocalWins,
RemoteWins,
LatestWins,
Custom,
}
impl OfflineDataStore {
pub async fn new(db_path: PathBuf) -> Result<Self> {
let store: _ = OfflineDataStore {
db_path: db_path.clone(),
data: Arc::new(Mutex::new(HashMap::new()))
};
store.load_all_data_from_disk().await?;
println!("Initialized offline data store at {:?}", db_path);
Ok(store)
}
pub async fn store_data(&self, key: &str, data: &[u8]) -> Result<()> {
let mut data_map = self.data.write().await;
data_map.insert(key.to_string(), data.to_vec());
self.save_data().await?;
println!("Stored data for key '{}' ({} bytes)", key, data.len());
Ok(())
}
pub async fn load_data(&self, key: &str) -> Result<Option<Vec<u8> {
let data_map: _ = self.data.read().await;
let result: _ = data_map.get(key).cloned();
if result.is_some() {
println!("Loaded data for key '{}'", key);
}
Ok(result)
}
pub async fn sync_when_online(&self) -> Result<SyncResult> {
println!("Attempting to sync data...");
tokio::time::sleep(Duration::from_millis(100)).await;
let result: _ = SyncResult {
synced_items: 0,
failed_items: 0,
errors: Vec::new(),
};
Ok(result)
}
async fn load_all_data_from_disk(&self) -> Result<()> {
if !self.db_path.exists() {
return Ok(());
}
let mut file = File::open(&self.db_path)?;
let mut contents = String::new();
file.read_to_string(&mut contents)?;
let loaded_data: HashMap<String, Vec<u8> = serde_json::from_str(&contents)?;
let mut data_map = self.data.write().await;
data_map.extend(loaded_data);
println!("Loaded {} entries from offline store", data_map.len());
Ok(())
}
async fn save_data(&self) -> Result<()> {
let data_map: _ = self.data.read().await;
let contents: _ = serde_json::to_string(&*data_map)?;
let mut file = File::create(&self.db_path)?;
file.write_all(contents.as_bytes())?;
Ok(())
}
}
#[derive(Debug)]
pub struct SyncManager {
conflict_resolver: Arc<ConflictResolver>,
merge_strategy: MergeStrategy,
}
#[derive(Debug)]
pub struct ConflictResolver {
strategy: MergeStrategy,
}
impl ConflictResolver {
pub fn new(strategy: MergeStrategy) -> Self {
ConflictResolver { strategy }
}
pub async fn resolve(&self, conflicts: &[Conflict]) -> Result<Vec<Resolution> {
let mut resolutions = Vec::new();
for conflict in conflicts {
let resolution: _ = match self.strategy {
MergeStrategy::LocalWins => Resolution {
key: conflict.key.clone(),
resolved: true,
strategy: "LocalWins".to_string(),
value: Some(conflict.local_value.clone()),
},
MergeStrategy::RemoteWins => Resolution {
key: conflict.key.clone(),
resolved: true,
strategy: "RemoteWins".to_string(),
value: Some(conflict.remote_value.clone()),
},
MergeStrategy::LatestWins => Resolution {
key: conflict.key.clone(),
resolved: true,
strategy: "LatestWins".to_string(),
value: Some(conflict.remote_value.clone()),
},
MergeStrategy::Custom => Resolution {
key: conflict.key.clone(),
resolved: false,
strategy: "Custom".to_string(),
value: None,
},
};
resolutions.push(resolution);
}
Ok(resolutions)
}
}
impl SyncManager {
pub async fn new() -> Result<Self> {
let sync_manager: _ = SyncManager {
conflict_resolver: Arc::new(Mutex::new(ConflictResolver::new(MergeStrategy::LatestWins)))
merge_strategy: MergeStrategy::LatestWins,
};
println!("Initialized sync manager");
Ok(sync_manager)
}
pub async fn sync_data(&self) -> Result<SyncResult> {
println!("Starting data synchronization...");
tokio::time::sleep(Duration::from_millis(50)).await;
let result: _ = SyncResult {
synced_items: 0,
failed_items: 0,
errors: Vec::new(),
};
println!("Data synchronization completed");
Ok(result)
}
pub async fn resolve_conflicts(&self, conflicts: &[Conflict]) -> Result<Vec<Resolution> {
self.conflict_resolver.resolve(conflicts).await
}
pub fn conflict_resolver(&self) -> Arc<ConflictResolver> {
self.conflict_resolver.clone()
}
}