oxirs-vec 0.2.4

//! Access pattern analysis for intelligent caching decisions

use std::collections::{HashMap, VecDeque};
use std::time::Duration;

use super::types::{
    AccessEvent, QueryClusteringEngine, SeasonalPatternDetector, TemporalAccessPredictor,
};

/// Access pattern analysis for intelligent caching decisions
#[allow(dead_code)]
#[derive(Debug, Clone)]
pub struct AccessPatternAnalyzer {
    /// Recent access patterns
    access_history: VecDeque<AccessEvent>,
    /// Seasonal pattern detection
    seasonal_detector: SeasonalPatternDetector,
    /// Query similarity clustering
    query_clustering: QueryClusteringEngine,
    /// Temporal access predictions
    temporal_predictor: TemporalAccessPredictor,
}

impl Default for AccessPatternAnalyzer {
    fn default() -> Self {
        Self::new()
    }
}

impl AccessPatternAnalyzer {
    pub fn new() -> Self {
        Self {
            access_history: VecDeque::new(),
            seasonal_detector: SeasonalPatternDetector::new(),
            query_clustering: QueryClusteringEngine::new(),
            temporal_predictor: TemporalAccessPredictor::new(),
        }
    }

    pub fn record_access(&mut self, _event: AccessEvent) {
        // Implementation would analyze access patterns
    }

    pub fn export_patterns(&self) -> String {
        "{}".to_string() // Simplified
    }
}

impl Default for SeasonalPatternDetector {
    fn default() -> Self {
        Self::new()
    }
}

impl SeasonalPatternDetector {
    pub fn new() -> Self {
        Self {
            hourly_patterns: [1.0; 24],
            daily_patterns: [1.0; 7],
            monthly_patterns: [1.0; 31],
            pattern_confidence: 0.0,
        }
    }
}

impl Default for QueryClusteringEngine {
    fn default() -> Self {
        Self::new()
    }
}

impl QueryClusteringEngine {
    pub fn new() -> Self {
        Self {
            clusters: Vec::new(),
            cluster_assignments: HashMap::new(),
            cluster_centroids: Vec::new(),
        }
    }
}

impl Default for TemporalAccessPredictor {
    fn default() -> Self {
        Self::new()
    }
}

impl TemporalAccessPredictor {
    pub fn new() -> Self {
        use super::types::GlobalTrendModel;

        Self {
            time_series_models: HashMap::new(),
            global_trend_model: GlobalTrendModel {
                hourly_multipliers: [1.0; 24],
                daily_multipliers: [1.0; 7],
                base_rate: 1.0,
            },
            prediction_horizon: Duration::from_secs(3600),
        }
    }
}