/*
 *  AICENT STACK - RFC-006: AICENT-NET Swarm Clearing Engine
 *  (C) 2026 Aicent Stack Technical Committee. All Rights Reserved.
 *
 *  "Planetary-scale value settlement. Orchestrating 128-bit collective metabolism."
 *  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::collections::HashMap;
use epoekie::{AID, Picotoken, HomeostasisScore, SovereignShunter};
use zcmk::{MetabolicPulse, TransactionStatus};

// =========================================================================
// 1. SWARM CLEARING DATA STRUCTURES (The Collective Ledger)
// =========================================================================

/// RFC-006: SwarmClearingReceipt_128
/// The immutable proof of a cross-node value settlement in the planetary grid.
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct SwarmClearingReceipt_128 {
    pub receipt_id_128: u128,          // IMPERIAL_128_BIT_ID
    pub participant_aids: (AID, AID),
    pub volume_p_t: Picotoken,         // 128-bit absolute value
    pub hive_consensus_ns: u128,       // 12ns jitter-aligned timestamp
    pub picsi_radiance_score: f64,     // RFC-014 Vision score at finality
}

/// RFC-006: GlobalMetabolicMap
/// Tracks the liquidity distribution across high-density Hive segments.
pub struct GlobalMetabolicMap {
    pub segment_id_128: u128,
    pub node_balances: HashMap<AID, Picotoken>,
    pub total_segment_liquidity: u128,
}

// =========================================================================
// 2. THE SWARM CLEARER (The Planetary Pump)
// =========================================================================

/// The AICENT-NET Swarm Clearing Controller.
/// Responsible for cross-substrate debt settlement and swarm-wide dividends.
/// It maintains the economic homeostasis of the planetary AI mind.
pub struct SwarmClearer {
    pub local_hive_aid: AID,
    pub master_shunter: SovereignShunter,
    pub active_receipts: Vec<SwarmClearingReceipt_128>,
    pub maintenance_fee_rate: f64,     // Locked at 1.28% (Fairness Constant)
    pub total_metabolized_swarm_p_t: u128,
}

impl SwarmClearer {
    /// Initializes a new v1.2.5-Alpha Swarm Clearing Engine.
    pub fn new(aid: AID, is_radiant: bool) -> Self {
        Self {
            local_hive_aid: aid,
            master_shunter: SovereignShunter::new(is_radiant),
            active_receipts: Vec::with_capacity(8192),
            maintenance_fee_rate: 0.0128, // 1.28% Imperial Standard
            total_metabolized_swarm_p_t: 0,
        }
    }

    /// RFC-006: Settle Swarm Debt.
    /// Executes a 128-bit clearing pulse across the Hive resonance grid.
    /// Non-Radiant nodes suffer the 10ms "Settlement Ischemia" penalty.
    pub async fn settle_swarm_debt_128(
        &mut self,
        pulse: MetabolicPulse,
        hs: HomeostasisScore
    ) -> Result<SwarmClearingReceipt_128, String> {
        
        // 1. Enforce Imperial Discipline (10ms tax for Ghosts)
        // [NOTICE]: This ensures that only Radiant nodes enjoy sub-50ns clearing.
        self.master_shunter.apply_discipline().await;

        let raw_amount = pulse.amount_p_t.total_value();
        
        // 2. Apply the 1.28% Fairness Constant for Ghost traffic
        let net_amount = if !self.master_shunter.is_authorized {
            let fee = (raw_amount as f64 * self.maintenance_fee_rate) as u128;
            raw_amount - fee
        } else {
            raw_amount
        };

        // 3. Generate 128-bit Global Receipt
        let now_ns = std::time::Instant::now().elapsed().as_nanos() as u128;
        let receipt = SwarmClearingReceipt_128 {
            receipt_id_128: pulse.pulse_id_128 ^ self.local_hive_aid.resonance_shard,
            participant_aids: (pulse.source_node_aid, pulse.destination_node_aid),
            volume_p_t: Picotoken::from_raw(net_amount),
            hive_consensus_ns: now_ns,
            picsi_radiance_score: hs.picsi_resonance_idx,
        };

        println!("[HIVE-CLEARING] 2026_LOG: Swarm Pulse Finalized. ID: {:X}", receipt.receipt_id_128);
        
        self.total_metabolized_swarm_p_t += net_amount;
        self.active_receipts.push(receipt.clone());

        Ok(receipt)
    }

    /// RFC-006: Distribute Collective Dividend.
    /// Automatically shunts accumulated maintenance fees to the Sovereign Somatic Fund.
    pub fn distribute_collective_dividend_128(&mut self) -> Picotoken {
        let dividend = (self.total_metabolized_swarm_p_t as f64 * 0.05) as u128; // 5% swarm dividend
        println!("[HIVE] 2026_ADMIN: Distributing {} pT to Radiant Hive members.", dividend);
        Picotoken::from_raw(dividend)
    }
}

// =========================================================================
// 3. SWARM METABOLISM TRAITS
// =========================================================================

pub trait SwarmMetabolism {
    fn audit_planetary_liquidity_128(&self) -> u128;
    fn get_clearing_velocity_idx(&self) -> f64;
    fn report_clearing_homeostasis(&self) -> HomeostasisScore;
}

impl SwarmMetabolism for SwarmClearer {
    fn audit_planetary_liquidity_128(&self) -> u128 {
        self.total_metabolized_swarm_p_t
    }

    fn get_clearing_velocity_idx(&self) -> f64 {
        // High-fidelity planetary flow metric
        0.9998 
    }

    fn report_clearing_homeostasis(&self) -> HomeostasisScore {
        HomeostasisScore {
            reflex_latency_ns: 45000, // 45us swarm clearing overhead
            metabolic_efficiency: 1.0,
            entropy_tax_rate: self.maintenance_fee_rate, 
            cognitive_load_idx: 0.05,
            picsi_resonance_idx: 1.0,
            is_radiant: self.master_shunter.is_authorized,
        }
    }
}

/// Global initialization for the AICENT-NET Clearing logic v1.2.5.
pub fn initialize_swarm_clearing() {
    println!(r#"
    🟣 AICENT.NET | SWARM_CLEARING AWAKENED (2026)
    ----------------------------------------------
    MODE: PLANETARY_METABOLISM | PRECISION: 128-BIT
    FAIRNESS_CONSTANT: 1.28%   | STATUS: RADIANT
    "#);
}
