// daemon.rs — graph health metrics
//
// Compute graph health statistics for the TUI (F4 hippocampus screen).
// The background daemon and RPC infrastructure have been removed;
// graph maintenance agents now run within the consciousness binary.

/// Graph health snapshot for the hippocampus TUI screen.
#[derive(Clone, Default, serde::Serialize, serde::Deserialize)]
pub struct GraphHealth {
    pub nodes: usize,
    pub edges: usize,
    pub communities: usize,
    pub alpha: f32,        // power-law exponent (target ≥2.5)
    pub gini: f32,         // degree inequality (target ≤0.4)
    pub avg_cc: f32,       // clustering coefficient (target ≥0.2)
    pub sigma: f32,        // small-world sigma
    pub episodic_ratio: f32, // episodic/total nodes (target <0.4)
    pub interference: usize, // interfering pairs (target <50)
    // Consolidation work estimate from plan
    #[serde(default)]
    pub plan_counts: std::collections::HashMap<String, usize>,
    pub plan_rationale: Vec<String>,
    pub computed_at: String,
}

pub fn compute_graph_health(store: &crate::store::Store) -> GraphHealth {
    let graph = store.build_graph();
    let snap = crate::graph::current_metrics(&graph);

    let episodic_count = store.nodes.iter()
        .filter(|(_, n)| matches!(n.node_type, crate::store::NodeType::EpisodicSession))
        .count();
    let episodic_ratio = if store.nodes.is_empty() { 0.0 }
        else { episodic_count as f32 / store.nodes.len() as f32 };

    // Use the same planning logic as consolidation (skip O(n²) interference)
    let plan = crate::neuro::consolidation_plan_quick(store);

    GraphHealth {
        nodes: snap.nodes,
        edges: snap.edges,
        communities: snap.communities,
        alpha: snap.alpha,
        gini: snap.gini,
        avg_cc: snap.avg_cc,
        sigma: snap.sigma,
        episodic_ratio,
        interference: 0,
        plan_counts: plan.counts,
        plan_rationale: plan.rationale,
        computed_at: crate::store::format_datetime_space(crate::store::now_epoch()),
    }
}