//! Feature interaction analysis for understanding feature relationships
//!
//! This module provides stub implementations for feature interaction analysis.
//! Full implementations are planned for future releases.

use sklears_core::error::{Result as SklResult, SklearsError};

/// Feature interaction analysis (stub implementation)
#[derive(Debug, Clone)]
pub struct FeatureInteractionAnalysis;

impl FeatureInteractionAnalysis {
    /// analyze_interactions
    pub fn analyze_interactions(_features: &[usize]) -> SklResult<f64> {
        Err(SklearsError::NotImplemented(
            "FeatureInteractionAnalysis::analyze_interactions is not yet implemented".to_string(),
        ))
    }
}

/// Pairwise interaction analysis (stub implementation)
#[derive(Debug, Clone)]
pub struct PairwiseInteractions;

impl PairwiseInteractions {
    /// compute_pairwise
    pub fn compute_pairwise(_features: &[usize]) -> SklResult<Vec<(usize, usize, f64)>> {
        Err(SklearsError::NotImplemented(
            "PairwiseInteractions::compute_pairwise is not yet implemented".to_string(),
        ))
    }
}

/// Higher order interactions (stub implementation)
#[derive(Debug, Clone)]
pub struct HigherOrderInteractions;

impl HigherOrderInteractions {
    /// compute_higher_order
    pub fn compute_higher_order(_features: &[usize]) -> SklResult<f64> {
        Err(SklearsError::NotImplemented(
            "HigherOrderInteractions::compute_higher_order is not yet implemented".to_string(),
        ))
    }
}

/// Interaction strength measurement (stub implementation)
#[derive(Debug, Clone)]
pub struct InteractionStrength;

impl InteractionStrength {
    /// compute_strength
    pub fn compute_strength(_feature1: usize, _feature2: usize) -> SklResult<f64> {
        Err(SklearsError::NotImplemented(
            "InteractionStrength::compute_strength is not yet implemented".to_string(),
        ))
    }
}

/// Synergy detection (stub implementation)
#[derive(Debug, Clone)]
pub struct SynergyDetection;

impl SynergyDetection {
    /// detect_synergy
    pub fn detect_synergy(_features: &[usize]) -> SklResult<Vec<Vec<usize>>> {
        Err(SklearsError::NotImplemented(
            "SynergyDetection::detect_synergy is not yet implemented".to_string(),
        ))
    }
}
