mielin-cells 0.1.0-rc.1

//! Privacy Management Module

use serde::{Deserialize, Serialize};
use std::time::Duration;
use thiserror::Error;

#[derive(Debug, Error)]
pub enum PrivacyError {
    #[error("Privacy violation: {0}")]
    PrivacyViolation(String),
}

pub type PrivacyResult<T> = Result<T, PrivacyError>;

/// Data classification
#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
pub enum DataClassification {
    Public,
    Internal,
    Confidential,
    Restricted,
    PII,
}

/// Retention policy
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct RetentionPolicy {
    pub classification: DataClassification,
    pub retention_period: Duration,
    pub auto_delete: bool,
}

/// Privacy control
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct PrivacyControl {
    pub anonymization: bool,
    pub encryption: bool,
    pub access_logging: bool,
    pub consent_required: bool,
}

impl Default for PrivacyControl {
    fn default() -> Self {
        Self {
            anonymization: false,
            encryption: true,
            access_logging: true,
            consent_required: true,
        }
    }
}

/// Privacy configuration
#[derive(Debug, Clone)]
pub struct PrivacyConfig {
    pub controls: PrivacyControl,
    pub retention: Vec<RetentionPolicy>,
}

impl Default for PrivacyConfig {
    fn default() -> Self {
        Self {
            controls: PrivacyControl::default(),
            retention: vec![RetentionPolicy {
                classification: DataClassification::PII,
                retention_period: Duration::from_secs(90 * 86400), // 90 days
                auto_delete: true,
            }],
        }
    }
}

/// Privacy manager
pub struct PrivacyManager {
    config: PrivacyConfig,
}

impl PrivacyManager {
    pub fn new(config: PrivacyConfig) -> Self {
        Self { config }
    }

    pub fn check_access(&self, _data_classification: DataClassification) -> PrivacyResult<bool> {
        Ok(true)
    }

    pub fn anonymize_data(&self, data: &[u8]) -> PrivacyResult<Vec<u8>> {
        if self.config.controls.anonymization {
            // Simple anonymization
            Ok(data.iter().map(|_| b'*').collect())
        } else {
            Ok(data.to_vec())
        }
    }
}

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

    #[test]
    fn test_privacy_manager() {
        let config = PrivacyConfig::default();
        let manager = PrivacyManager::new(config);

        let result = manager.check_access(DataClassification::PII);
        assert!(result.is_ok());
    }

    #[test]
    fn test_anonymization() {
        let mut config = PrivacyConfig::default();
        config.controls.anonymization = true;
        let manager = PrivacyManager::new(config);

        let data = b"sensitive data";
        let anonymized = manager.anonymize_data(data).expect("anonymize");
        assert_eq!(anonymized, vec![b'*'; data.len()]);
    }
}