//! Regional Resource Balancer
//!
//! Balances resource allocation across geographic regions based on contribution and demand

use anyhow::Result;
use serde::{Deserialize, Serialize};
use std::collections::HashMap;
use chrono::{DateTime, Utc};

/// Regional resource balancer for geographic distribution
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct RegionalResourceBalancer {
    pub regional_allocations: HashMap<String, RegionalAllocation>,
    pub regional_metrics: HashMap<String, RegionalMetrics>,
    pub balancing_policies: Vec<RegionalPolicy>,
}

#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct RegionalAllocation {
    pub region: String,
    pub total_capacity_gb: u64,
    pub allocated_capacity_gb: u64,
    pub active_nodes: u32,
    pub utilization_percent: f64,
    pub last_updated: DateTime<Utc>,
}

#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct RegionalMetrics {
    pub region: String,
    pub average_latency_ms: u32,
    pub throughput_gbps: f64,
    pub reliability_score: f64,
    pub cost_efficiency: f64,
}

#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct GeographicDistribution {
    pub optimal_regions: Vec<String>,
    pub current_distribution: HashMap<String, f64>,
    pub rebalancing_needed: bool,
}

#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct RegionalPolicy {
    pub name: String,
    pub description: String,
    pub enabled: bool,
}

impl RegionalResourceBalancer {
    pub fn new() -> Self {
        Self {
            regional_allocations: HashMap::new(),
            regional_metrics: HashMap::new(),
            balancing_policies: Vec::new(),
        }
    }
}

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