use super::RpcHandler;
use crate::{identity, mesh};
use anyhow::Result;
use tracing::info;

impl RpcHandler {
    /// mesh.status — Get mesh radio status and detected devices.
    pub(super) async fn handle_mesh_status(&self) -> Result<serde_json::Value> {
        let config = mesh::load_config(&self.config.data_dir).await?;
        let devices = mesh::detect_meshtastic_devices().await;

        Ok(serde_json::json!({
            "enabled": config.enabled,
            "device_path": config.device_path,
            "channel_name": config.channel_name,
            "broadcast_identity": config.broadcast_identity,
            "detected_devices": devices,
        }))
    }

    /// mesh.discover — Discover nodes via mesh radio.
    pub(super) async fn handle_mesh_discover(
        &self,
        params: Option<serde_json::Value>,
    ) -> Result<serde_json::Value> {
        let device_path = params
            .as_ref()
            .and_then(|p| p.get("device_path"))
            .and_then(|v| v.as_str());

        let config = mesh::load_config(&self.config.data_dir).await?;
        let effective_device = device_path.or(config.device_path.as_deref());

        let nodes = mesh::discover_nodes(effective_device).await?;

        Ok(serde_json::json!({
            "nodes": nodes,
            "count": nodes.len(),
        }))
    }

    /// mesh.broadcast — Broadcast our node identity over mesh.
    pub(super) async fn handle_mesh_broadcast(&self) -> Result<serde_json::Value> {
        let config = mesh::load_config(&self.config.data_dir).await?;
        if !config.enabled {
            anyhow::bail!("Mesh networking is not enabled. Configure it first.");
        }

        let (data, _) = self.state_manager.get_snapshot().await;
        let did = identity::did_key_from_pubkey_hex(&data.server_info.pubkey)?;
        let pubkey = &data.server_info.pubkey;

        mesh::broadcast_identity(&did, pubkey, config.device_path.as_deref()).await?;

        info!("Broadcast identity over mesh");
        Ok(serde_json::json!({ "broadcast": true }))
    }

    /// mesh.configure — Enable/disable mesh and set device path.
    pub(super) async fn handle_mesh_configure(
        &self,
        params: Option<serde_json::Value>,
    ) -> Result<serde_json::Value> {
        let params = params.ok_or_else(|| anyhow::anyhow!("Missing params"))?;

        let mut config = mesh::load_config(&self.config.data_dir).await?;

        if let Some(enabled) = params.get("enabled").and_then(|v| v.as_bool()) {
            config.enabled = enabled;
        }
        if let Some(device) = params.get("device_path").and_then(|v| v.as_str()) {
            config.device_path = Some(device.to_string());
        }
        if let Some(channel) = params.get("channel_name").and_then(|v| v.as_str()) {
            config.channel_name = Some(channel.to_string());
        }
        if let Some(broadcast) = params.get("broadcast_identity").and_then(|v| v.as_bool()) {
            config.broadcast_identity = broadcast;
        }

        mesh::save_config(&self.config.data_dir, &config).await?;

        info!("Mesh config updated");
        Ok(serde_json::json!({
            "configured": true,
            "enabled": config.enabled,
            "device_path": config.device_path,
        }))
    }
}