mielin-cells 0.1.0-rc.1

//! Recovery Module
//!
//! Implements recovery mechanisms for disaster recovery.

use crate::agent::AgentId;
use serde::{Deserialize, Serialize};
use std::time::SystemTime;
use thiserror::Error;

#[derive(Debug, Error)]
pub enum RecoveryError {
    #[error("Recovery failed: {0}")]
    RecoveryFailed(String),
    #[error("Backup not found: {0}")]
    BackupNotFound(String),
    #[error("Invalid recovery point: {0}")]
    InvalidRecoveryPoint(String),
}

pub type RecoveryResult<T> = Result<T, RecoveryError>;

/// Recovery strategy
#[derive(Debug, Clone, Serialize, Deserialize)]
pub enum RecoveryStrategy {
    /// Full recovery from backup
    Full,
    /// Point-in-time recovery
    PointInTime,
    /// Partial recovery (specific components)
    Partial,
}

/// Recovery point
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct RecoveryPoint {
    pub timestamp: SystemTime,
    pub backup_id: String,
    pub agent_id: AgentId,
}

/// Recovery target
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct RecoveryTarget {
    pub agent_id: AgentId,
    pub recovery_point: RecoveryPoint,
    pub strategy: RecoveryStrategy,
}

/// Recovery plan
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct RecoveryPlan {
    pub targets: Vec<RecoveryTarget>,
    pub created_at: SystemTime,
}

/// Recovery configuration
#[derive(Debug, Clone)]
pub struct RecoveryConfig {
    pub strategy: RecoveryStrategy,
    pub verify_before_restore: bool,
}

impl Default for RecoveryConfig {
    fn default() -> Self {
        Self {
            strategy: RecoveryStrategy::Full,
            verify_before_restore: true,
        }
    }
}

/// Recovery manager
pub struct RecoveryManager {
    #[allow(dead_code)]
    config: RecoveryConfig,
}

impl RecoveryManager {
    pub fn new(config: RecoveryConfig) -> Self {
        Self { config }
    }

    pub fn create_recovery_plan(
        &self,
        targets: Vec<RecoveryTarget>,
    ) -> RecoveryResult<RecoveryPlan> {
        Ok(RecoveryPlan {
            targets,
            created_at: SystemTime::now(),
        })
    }

    pub fn execute_recovery(&self, _plan: &RecoveryPlan) -> RecoveryResult<()> {
        // Implementation would restore from backups
        Ok(())
    }
}

#[cfg(test)]
mod tests {
    use super::*;

    #[test]
    fn test_recovery_manager_creation() {
        let config = RecoveryConfig::default();
        let _manager = RecoveryManager::new(config);
    }
}