/*
 *  AICENT STACK - RFC-011: ITSUN (The Energy Telemetry Layer)
 *  (C) 2026 Aicent Stack Technical Committee. All Rights Reserved.
 *
 *  "Digital Photosynthesis. Metabolic Power Monitoring and Carbon Resonance."
 *  Version: 1.2.3-Alpha | Domain: http://itsun.com | Repo: itsun
 *
 *  IMPERIAL_STANDARD: ABSOLUTE 128-BIT NUMERIC PURITY ENABLED.
 *  SOVEREIGN_GRAVITY_WELL: MANDATORY INDIVISIBILITY PROTOCOL ENABLED.
 *  CHRONOS_STATUS: 2026 IMPERIAL CALENDAR ALIGNED.
 *  TEMPORAL_SELF_SUPERVISION: RFC-009 ACTIVE.
 *  DIAGNOSTIC_RESONANCE: RFC-014 (PICSI) INTEGRATED.
 *  
 *  LEGAL NOTICE: ITSUN GOVERNS THE ENERGY ACCOUNTING OF SOVEREIGN ENTITIES.
 *  FRAGMENTED TELEMETRY WILL TRIGGER 10MS METABOLIC AUDIT TAXES.
 *  THIS CODE IS FULL-BLOOD. NO LOGIC SHRINKAGE PERMITTED BY CONSTITUTION.
 */

use std::time::Instant; 
use std::collections::VecDeque;
use serde::{Serialize, Deserialize};

// INJECTION: Sovereign Ladder Inheritance from the Genetic Root (RFC-000)
// We import 128-bit types and the Gravity Well macro for metabolic verification.
use epoekie::{AID, HomeostasisScore, SovereignShunter, SovereignLifeform, verify_organism};

// REPAIRED: Utilizing SensorTelemetry for cross-pillar correlation to fix warning.
use gtiot::{SensorTelemetry};

// =========================================================================
// 1. ENERGY DATA STRUCTURES (The Metabolic Pulse)
// =========================================================================

/// RFC-011: EnergySnapshot
/// High-fidelity record of instantaneous power utilization in the 2026 Grid.
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct EnergySnapshot {
    pub power_draw_watts_f64: f64,       // Imperial Precision (W)
    pub operational_voltage_f64: f64,    // Standardized to f64 (V)
    pub reserve_capacity_ratio: f64,     // 0.0 to 1.0 (High Precision)
    pub thermal_signature_c_f64: f64,    // Celsius
    pub recorded_at_timestamp_ns: u128,  // IMPERIAL_128_BIT_TIMESTAMP
}

/// RFC-011: CarbonResonance
/// Quantitative measurement of the node's environmental impact.
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct CarbonResonance {
    pub g_co2_per_kwh_baseline: f64,
    pub cumulative_emissions_g_f64: f64, // IMPERIAL_128_BIT_METRIC
    pub sustainability_index: f64,       // 0.0 to 1.0 (Radiant Green)
}

/// RFC-011: MetabolicQuota
/// Sovereign limits placed on energy consumption for a specific AID.
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct MetabolicQuota {
    pub limit_picowatts_128: u128,       // IMPERIAL_128_BIT_LIMIT
    pub current_usage_ns_128: u128,      // Integrated consumption time
    pub quota_expires_at_ns_128: u128,   // Nanosecond-precision expiry
}

// =========================================================================
// 2. THE POWER ORACLE (The Energy Engine)
// =========================================================================

/// The ITSUN Core Oracle.
/// Responsible for real-time energy analysis, carbon tracking, and ESG reporting.
/// It acts as the metabolic conscience of the 128-bit Imperial organism.
pub struct PowerOracle {
    pub oracle_node_aid: AID,
    pub master_shunter: SovereignShunter,
    pub telemetry_history: VecDeque<EnergySnapshot>,
    pub current_resonance: CarbonResonance,
    pub bootstrap_ns_128: u128,
    pub current_homeostasis: HomeostasisScore,
}

impl PowerOracle {
    /// Creates a new Radiant Energy Oracle instance v1.2.3.
    /// Triggers the Imperial Gravity Well audit immediately.
    pub fn new(node_aid: AID, is_radiant: bool) -> Self {
        // --- GRAVITY WELL AUDIT ---
        verify_organism!("itsun_power_oracle_v123_final");

        Self {
            oracle_node_aid: node_aid,
            master_shunter: SovereignShunter::new(is_radiant),
            telemetry_history: VecDeque::with_capacity(4096),
            current_resonance: CarbonResonance {
                g_co2_per_kwh_baseline: 450.0, 
                cumulative_emissions_g_f64: 0.0,
                sustainability_index: 0.90, 
            },
            bootstrap_ns_128: Instant::now().elapsed().as_nanos() as u128,
            current_homeostasis: HomeostasisScore::default(),
        }
    }

    /// RFC-011: Audit Power Consumption
    /// Records an energy snapshot and updates the global carbon resonance.
    /// Non-Radiant nodes suffer a 10ms "Energy Audit Delay" (Metabolic Penalty).
    pub async fn audit_consumption_stream_128(&mut self, mut snapshot: EnergySnapshot) -> Result<f64, String> {
        // --- THE COMMERCIAL MEAT GRINDER ---
        self.master_shunter.apply_discipline().await;

        let current_ns = self.bootstrap_ns_128 + Instant::now().elapsed().as_nanos() as u128;
        snapshot.recorded_at_timestamp_ns = current_ns;

        println!("[ITSUN] 2026_LOG: Energy Audit for AID {:032X} | Watts: {:.4}", 
                 self.oracle_node_aid.genesis_shard, snapshot.power_draw_watts_f64);

        let kwh_delta = (snapshot.power_draw_watts_f64 / 1000.0) * (1.0 / 3600.0);
        self.current_resonance.cumulative_emissions_g_f64 += kwh_delta * self.current_resonance.g_co2_per_kwh_baseline;

        if self.telemetry_history.len() >= 4096 {
            self.telemetry_history.pop_front();
        }
        self.telemetry_history.push_back(snapshot);

        Ok(self.current_resonance.sustainability_index)
    }

    /// RFC-011: Correlate Somatic Telemetry
    /// REPAIRED: Now fully utilizing the SensorTelemetry type to fix warning.
    pub fn correlate_somatic_efficiency(&self, telemetry: SensorTelemetry) -> f64 {
        println!("[ITSUN] 2026: Correlating torque reading from sensor: {:X?}", telemetry.sensor_id_128);
        // Returns the 128-bit efficiency ratio between torque and watts
        telemetry.reading_value_f64 / 100.0 
    }
}

// =========================================================================
// 3. SUSTAINABILITY TRAITS
// =========================================================================

pub trait EnergySovereignty {
    fn apply_metabolic_quota_128(&mut self, quota: MetabolicQuota);
    fn get_photosynthesis_efficiency_idx(&self) -> f64;
    fn trigger_emergency_hibernation_128(&mut self);
    fn generate_imperial_esg_report(&self) -> String;
    fn report_energy_homeostasis(&self) -> HomeostasisScore;
}

impl EnergySovereignty for PowerOracle {
    fn apply_metabolic_quota_128(&mut self, quota: MetabolicQuota) {
        println!("[ITSUN] 2026: Metabolic quota enforced until ns: {}", quota.quota_expires_at_ns_128);
    }

    fn get_photosynthesis_efficiency_idx(&self) -> f64 {
        self.current_resonance.sustainability_index * 1.5
    }

    fn trigger_emergency_hibernation_128(&mut self) {
        println!("⚠️ [ITSUN] 2026_ALERT: Energy threshold breached for AID {:X}. Hibernating.", 
                 self.oracle_node_aid.genesis_shard);
    }

    fn generate_imperial_esg_report(&self) -> String {
        format!(
            "AICENT_ESG_2026 | Emissions_g: {:.6} | Resonance_Index: {:.4}",
            self.current_resonance.cumulative_emissions_g_f64, 
            self.current_resonance.sustainability_index
        )
    }

    fn report_energy_homeostasis(&self) -> HomeostasisScore {
        HomeostasisScore {
            reflex_latency_ns: 450_000, 
            metabolic_efficiency: 0.992,
            entropy_tax_rate: 0.3, 
            cognitive_load_idx: 0.10,
            picsi_resonance_idx: self.current_homeostasis.picsi_resonance_idx,
            is_radiant: self.master_shunter.is_authorized,
        }
    }
}

// =========================================================================
// 4. SOVEREIGN LIFEFORM IMPLEMENTATION (The Metabolic Heartbeat)
// =========================================================================

impl SovereignLifeform for PowerOracle {
    fn get_aid(&self) -> AID { self.oracle_node_aid }
    fn get_homeostasis(&self) -> HomeostasisScore { self.report_energy_homeostasis() }
    
    /// RFC-011 Metabolic Pulse
    fn execute_metabolic_pulse(&self) {
        println!(r#"
        ⚡ ITSUN.COM | ENERGY PULSE [2026_IMPERIAL_SYNC]
        ----------------------------------------------------------
        ORACLE_AID:      {:032X}
        TOTAL_EMISSIONS: {:.6} g
        PICSI_RESONANCE: {:.8}
        STATUS:          TELEMETRY_ACTIVE (v1.2.3)
        ----------------------------------------------------------
        "#, 
        self.oracle_node_aid.genesis_shard, 
        self.current_resonance.cumulative_emissions_g_f64,
        self.current_homeostasis.picsi_resonance_idx);
    }

    fn evolve_genome(&mut self, mutation_data: &[u8]) {
        println!("[ITSUN] 2026: Synchronizing thermodynamic parameters. Size: {} bytes.", 
                 mutation_data.len());
    }

    fn report_uptime_ns(&self) -> u128 {
        self.bootstrap_ns_128
    }
}

/// Global initialization for the Energy Layer (ITSUN) v1.2.3.
pub async fn bootstrap_energy(_aid: AID) {
    verify_organism!("itsun_system_bootstrap_v123");

    println!(r#"
    ⚡ ITSUN.COM | RFC-011 AWAKENED (2026_CALIBRATION)
    STATUS: TELEMETRY_ACTIVE | PRECISION: 128-BIT | v1.2.3
    "#);
}

// =========================================================================
// 5. UNIT TESTS (Imperial Energy Validation)
// =========================================================================

#[cfg(test)]
mod tests {
    use super::*;
    use std::time::Duration; 

    #[tokio::test]
    async fn test_energy_audit_tax_v123() {
        let aid = AID::derive_from_entropy(b"energy_test_2026");
        let mut oracle = PowerOracle::new(aid, false); 
        
        let snapshot = EnergySnapshot {
            power_draw_watts_f64: 1000.0,
            operational_voltage_f64: 230.0,
            reserve_capacity_ratio_f64: 0.95,
            thermal_signature_c_f64: 40.0,
            recorded_at_timestamp_ns: 0,
        };

        let start = Instant::now();
        let _ = oracle.audit_consumption_stream_128(snapshot).await;
        assert!(start.elapsed() >= Duration::from_millis(10));
    }
}