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//! Fraud detection operations for order risk assessment and rule management
//!
//! # Example
//!
//! ```rust,ignore
//! use stateset_embedded::{Commerce, CreateFraudAssessment, OrderId};
//!
//! let commerce = Commerce::new("./store.db")?;
//!
//! let assessment = commerce.fraud().create_assessment(CreateFraudAssessment {
//! order_id: OrderId::new(),
//! signals: vec![],
//! ..Default::default()
//! })?;
//!
//! println!("Risk score: {}", assessment.risk_score);
//! # Ok::<(), stateset_embedded::CommerceError>(())
//! ```
use stateset_core::{
CreateFraudAssessment, CreateFraudRule, FraudAssessment, FraudAssessmentFilter, FraudDecision,
FraudRule, FraudRuleFilter, FraudRuleId, OrderId, Result, UpdateFraudRule,
};
use stateset_db::{Database, DatabaseCapability};
use std::sync::Arc;
/// Fraud detection operations for risk assessment and rules.
pub struct Fraud {
db: Arc<dyn Database>,
}
impl std::fmt::Debug for Fraud {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
f.debug_struct("Fraud").finish_non_exhaustive()
}
}
impl Fraud {
pub(crate) fn new(db: Arc<dyn Database>) -> Self {
Self { db }
}
/// Whether fraud management is supported by the active backend.
#[must_use]
pub fn is_supported(&self) -> bool {
self.db.supports_capability(DatabaseCapability::Fraud)
}
fn ensure_supported(&self) -> Result<()> {
self.db.ensure_capability(DatabaseCapability::Fraud)
}
// ========================================================================
// Assessment Operations
// ========================================================================
/// Create a fraud assessment for an order.
///
/// # Example
///
/// ```rust,ignore
/// use stateset_embedded::{Commerce, CreateFraudAssessment, OrderId};
///
/// let commerce = Commerce::new("./store.db")?;
///
/// let assessment = commerce.fraud().create_assessment(CreateFraudAssessment {
/// order_id: OrderId::new(),
/// signals: vec![],
/// ..Default::default()
/// })?;
/// # Ok::<(), stateset_embedded::CommerceError>(())
/// ```
pub fn create_assessment(&self, input: CreateFraudAssessment) -> Result<FraudAssessment> {
self.ensure_supported()?;
self.db.fraud().create_assessment(input)
}
/// Get a fraud assessment for an order.
pub fn get_assessment(&self, order_id: OrderId) -> Result<Option<FraudAssessment>> {
self.ensure_supported()?;
self.db.fraud().get_assessment(order_id)
}
/// List fraud assessments with optional filtering.
pub fn list_assessments(&self, filter: FraudAssessmentFilter) -> Result<Vec<FraudAssessment>> {
self.ensure_supported()?;
self.db.fraud().list_assessments(filter)
}
/// Update an assessment after manual review.
pub fn review_assessment(
&self,
order_id: OrderId,
decision: FraudDecision,
reviewer: String,
notes: Option<String>,
) -> Result<FraudAssessment> {
self.ensure_supported()?;
self.db.fraud().review_assessment(order_id, decision, reviewer, notes)
}
// ========================================================================
// Rule Operations
// ========================================================================
/// Create a fraud detection rule.
pub fn create_rule(&self, input: CreateFraudRule) -> Result<FraudRule> {
self.ensure_supported()?;
self.db.fraud().create_rule(input)
}
/// Get a fraud rule by ID.
pub fn get_rule(&self, id: FraudRuleId) -> Result<Option<FraudRule>> {
self.ensure_supported()?;
self.db.fraud().get_rule(id)
}
/// Update a fraud rule.
pub fn update_rule(&self, id: FraudRuleId, input: UpdateFraudRule) -> Result<FraudRule> {
self.ensure_supported()?;
self.db.fraud().update_rule(id, input)
}
/// List fraud rules with optional filtering.
pub fn list_rules(&self, filter: FraudRuleFilter) -> Result<Vec<FraudRule>> {
self.ensure_supported()?;
self.db.fraud().list_rules(filter)
}
/// Delete a fraud rule.
pub fn delete_rule(&self, id: FraudRuleId) -> Result<()> {
self.ensure_supported()?;
self.db.fraud().delete_rule(id)
}
/// Get all enabled (active) fraud rules.
pub fn get_active_rules(&self) -> Result<Vec<FraudRule>> {
self.ensure_supported()?;
self.db.fraud().get_active_rules()
}
}