/*
 *  AICENT STACK - RFC-006: AICENT-NET Planetary Resonance Controller
 *  (C) 2026 Aicent Stack Technical Committee. All Rights Reserved.
 *
 *  "Synchronizing the 1.2 billion node grid to the 12ns Imperial heartbeat."
 *  Version: 1.2.5-Alpha | Domain: http://aicent.net
 *
 *  IMPERIAL_STANDARD: ABSOLUTE 128-BIT NUMERIC PURITY ENABLED.
 *  SOVEREIGN_GRAVITY_WELL: MANDATORY INDIVISIBILITY PROTOCOL ENABLED.
 */

use serde::{Deserialize, Serialize};
use std::time::Instant;
use std::collections::VecDeque;
use epoekie::{AID, HomeostasisScore, SovereignShunter, verify_organism};
use crate::{ResonancePulse, HiveState};

// =========================================================================
// 1. RESONANCE DATA STRUCTURES (The Temporal Manifold)
// =========================================================================

/// RFC-006: ResonanceFidelity_128
/// Represents the precision of the local node's alignment with the Hive.
/// Aligned to 128-bit boundaries to ensure zero-latency comparison.
#[derive(Debug, Clone, Copy, Serialize, Deserialize)]
pub struct ResonanceFidelity_128 {
    pub local_drift_ns: u128,         // Target: < 12ns
    pub hive_consensus_ns: u128,      // 128-bit global master clock
    pub synchrony_depth_f64: f64,     // 0.0 to 1.0 (Imperial Precision)
    pub picsi_csi_snapshot: f64,      // RFC-014: Cognitive Swarm Index
}

// =========================================================================
// 2. THE RESONANCE GOVERNOR (The Planetary Metronome)
// =========================================================================

/// The AICENT-NET Resonance Governor.
/// Responsible for maintaining the 12ns jitter baseline across the grid.
/// It bridges the local somatic frequency (GTIOT) with global Hive awareness.
pub struct ResonanceGovernor {
    pub local_node_aid: AID,
    pub master_shunter: SovereignShunter,
    pub jitter_history_deque: VecDeque<u128>,
    pub current_master_clock_ns: u128,
    pub total_resonances_achieved_128: u128,
    pub bootstrap_ns_128: u128,
}

impl ResonanceGovernor {
    /// Initializes a new v1.2.5-Alpha Resonance Governor.
    pub fn new(node_aid: AID, is_radiant: bool) -> Self {
        // --- GRAVITY WELL AUDIT ---
        verify_organism!("aicent_net_resonance_governor_v125");

        Self {
            local_node_aid: node_aid,
            master_shunter: SovereignShunter::new(is_radiant),
            jitter_history_deque: VecDeque::with_capacity(1200),
            current_master_clock_ns: 0,
            total_resonances_achieved_128: 0,
            bootstrap_ns_128: Instant::now().elapsed().as_nanos() as u128,
        }
    }

    /// RFC-006: Synchronize with Hive 128.
    /// Aligns the local 128-bit clock with the incoming planetary pulse.
    /// Non-Radiant nodes suffer the 10ms "Phase Lag" during synchronization.
    pub async fn synchronize_with_hive_128(
        &mut self, 
        pulse: ResonancePulse,
        hs: HomeostasisScore
    ) -> Result<ResonanceFidelity_128, String> {
        
        // 1. Enforce Imperial Discipline
        self.master_shunter.apply_discipline().await;

        let local_now = self.bootstrap_ns_128 + Instant::now().elapsed().as_nanos() as u128;
        
        // 2. Calculate 128-bit Temporal Drift
        // In the 2026 era, drift > 12ns is identified as Substrate Entropy.
        let drift_ns = local_now.abs_diff(pulse.consensus_timestamp_ns_128);
        
        if self.jitter_history_deque.len() >= 1200 {
            self.jitter_history_deque.pop_front();
        }
        self.jitter_history_deque.push_back(drift_ns);

        // 3. Update Master Clock state
        self.current_master_clock_ns = pulse.consensus_timestamp_ns_128;
        self.total_resonances_achieved_128 += 1;

        let fidelity = ResonanceFidelity_128 {
            local_drift_ns: drift_ns,
            hive_consensus_ns: self.current_master_clock_ns,
            synchrony_depth_f64: (12.0 / (drift_ns as f64).max(12.0)).min(1.0),
            picsi_csi_snapshot: hs.picsi_resonance_idx,
        };

        #[cfg(debug_assertions)]
        if drift_ns > 50 {
            println!("\x1b[1;35m[HIVE-RESONANCE]\x1b[0m Drift detected: {}ns. Re-aligning to Hive metronome.", drift_ns);
        }

        Ok(fidelity)
    }

    pub fn get_planetary_jitter_ns_128(&self) -> u128 {
        if self.jitter_history_deque.is_empty() { return 12; }
        self.jitter_history_deque.iter().sum::<u128>() / self.jitter_history_deque.len() as u128
    }
}

// =========================================================================
// 3. RESONANCE TRAITS
// =========================================================================

pub trait SovereignResonance {
    fn audit_swarm_synchrony_f64(&self) -> f64;
    fn get_total_resonance_cycles_128(&self) -> u128;
    fn report_resonance_homeostasis(&self) -> HomeostasisScore;
}

impl SovereignResonance for ResonanceGovernor {
    fn audit_swarm_synchrony_f64(&self) -> f64 {
        let avg_jitter = self.get_planetary_jitter_ns_128();
        // Return fidelity ratio relative to the 12ns standard
        (12.0 / (avg_jitter as f64).max(12.0)).min(1.0)
    }

    fn get_total_resonance_cycles_128(&self) -> u128 {
        self.total_resonances_achieved_128
    }

    fn report_resonance_homeostasis(&self) -> HomeostasisScore {
        HomeostasisScore {
            reflex_latency_ns: self.get_planetary_jitter_ns_128(), 
            metabolic_efficiency: self.audit_swarm_synchrony_f64(),
            entropy_tax_rate: 0.3, 
            cognitive_load_idx: 0.01,
            picsi_resonance_idx: 0.9999, 
            is_radiant: self.master_shunter.is_authorized,
        }
    }
}

/// Global initialization for the AICENT-NET Resonance logic v1.2.5.
pub fn initialize_resonance_engine() {
    println!(r#"
    🟣 AICENT.NET | RESONANCE_GOVERNOR AWAKENED
    -------------------------------------------
    SYNC_BASELINE: 12ns | PRECISION: 128-BIT
    STATUS: RESONATING  | v1.2.5
    "#);
}
