symbi-runtime 1.4.0

//! Confidence monitoring API stubs and trait definitions
//!
//! This module provides the public API contract for confidence monitoring
//! functionality. The actual implementation is provided by the enterprise crate.

use async_trait::async_trait;
use serde::{Deserialize, Serialize};
use std::fmt;

use super::decision::{ModelRequest, ModelResponse, RoutingContext};
use super::error::TaskType;
use crate::context::AgentContext as Context;

/// Configuration for confidence monitoring
#[derive(Debug, Default, Clone, Serialize, Deserialize)]
pub struct ConfidenceConfig {
    // Stub implementation - actual fields will be defined in enterprise crate
}

/// Result of confidence evaluation
#[derive(Debug, Default, Clone, Serialize, Deserialize)]
pub struct ConfidenceEvaluation {
    /// Whether the evaluation meets the confidence threshold
    pub meets_threshold: bool,
    /// Recommendation based on confidence analysis
    pub recommendation: ConfidenceRecommendation,
}

/// Recommendation based on confidence evaluation
#[derive(Debug, Default, Clone, PartialEq, Eq, Serialize, Deserialize)]
pub enum ConfidenceRecommendation {
    #[default]
    UseResponse,
    FallbackToLLM,
}

/// Errors that can occur during confidence evaluation
#[derive(Debug, Clone, Serialize, Deserialize)]
pub enum ConfidenceError {
    EvaluationFailed,
}

impl fmt::Display for ConfidenceError {
    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
        match self {
            ConfidenceError::EvaluationFailed => write!(f, "Confidence evaluation failed"),
        }
    }
}

impl std::error::Error for ConfidenceError {}

/// Statistics for confidence monitoring
#[derive(Debug, Default, Clone, Serialize, Deserialize)]
pub struct ConfidenceStatistics {
    pub total_evaluations: u64,
}

/// Trait for confidence monitoring implementations
#[async_trait]
pub trait ConfidenceMonitorTrait: Send + Sync {
    /// Evaluates the confidence of a model's response.
    async fn evaluate(
        &self,
        _context: &Context,
        _request: &ModelRequest,
        _response: &ModelResponse,
    ) -> Result<ConfidenceEvaluation, ConfidenceError>;
}

/// Concrete confidence monitor implementation (stub)
#[derive(Debug)]
pub struct ConfidenceMonitor {
    _config: ConfidenceConfig,
    statistics: ConfidenceStatistics,
}

impl ConfidenceMonitor {
    /// Create a new confidence monitor with the given configuration
    pub fn new(config: ConfidenceConfig) -> Self {
        Self {
            _config: config,
            statistics: ConfidenceStatistics::default(),
        }
    }

    /// Evaluate confidence for a response
    pub async fn evaluate_confidence(
        &self,
        _response: &ModelResponse,
        _task_type: &TaskType,
        _context: &RoutingContext,
    ) -> Result<ConfidenceEvaluation, ConfidenceError> {
        Ok(ConfidenceEvaluation {
            meets_threshold: true,
            recommendation: ConfidenceRecommendation::UseResponse,
        })
    }

    /// Record an evaluation result
    pub async fn record_evaluation(
        &mut self,
        _task_type: TaskType,
        _confidence_score: f64,
        _model_id: String,
        _user_feedback: Option<bool>,
    ) {
        self.statistics.total_evaluations += 1;
    }

    /// Get confidence monitoring statistics
    pub async fn get_statistics(&self) -> ConfidenceStatistics {
        self.statistics.clone()
    }
}

/// No-operation confidence monitor implementation for trait usage
#[derive(Debug, Default, Clone)]
pub struct NoOpConfidenceMonitor;

#[async_trait]
impl ConfidenceMonitorTrait for NoOpConfidenceMonitor {
    async fn evaluate(
        &self,
        _context: &Context,
        _request: &ModelRequest,
        _response: &ModelResponse,
    ) -> Result<ConfidenceEvaluation, ConfidenceError> {
        Ok(ConfidenceEvaluation {
            meets_threshold: true,
            recommendation: ConfidenceRecommendation::UseResponse,
        })
    }
}