//! Agent CRUD operations

use zclaw_types::{AgentConfig, AgentId, AgentInfo, Event, Result};

use std::sync::Arc;
use tokio::sync::Mutex;
use super::adapters::AgentInbox;

use super::Kernel;

impl Kernel {
    /// Spawn a new agent
    pub async fn spawn_agent(&self, config: AgentConfig) -> Result<AgentId> {
        let id = config.id;

        // Validate capabilities
        self.capabilities.validate(&config.capabilities)?;

        // Register in memory
        self.memory.save_agent(&config).await?;

        // Register with A2A router for multi-agent messaging (before config is moved)
        {
            let profile = Self::agent_config_to_a2a_profile(&config);
            let rx = self.a2a_router.register_agent(profile).await;
            self.a2a_inboxes.insert(id, Arc::new(Mutex::new(AgentInbox::new(rx))));
        }

        // Register in registry (consumes config)
        let name = config.name.clone();
        self.registry.register(config);

        // Emit event
        self.events.publish(Event::AgentSpawned {
            agent_id: id,
            name,
        });

        Ok(id)
    }

    /// Kill an agent
    pub async fn kill_agent(&self, id: &AgentId) -> Result<()> {
        // Remove from registry
        self.registry.unregister(id);

        // Remove from memory
        self.memory.delete_agent(id).await?;

        // Unregister from A2A router
        {
            self.a2a_router.unregister_agent(id).await;
            self.a2a_inboxes.remove(id);
        }

        // Emit event
        self.events.publish(Event::AgentTerminated {
            agent_id: *id,
            reason: "killed".to_string(),
        });

        Ok(())
    }

    /// Update an existing agent's configuration
    pub async fn update_agent(&self, config: AgentConfig) -> Result<()> {
        let id = config.id;

        // Validate the agent exists
        if self.registry.get(&id).is_none() {
            return Err(zclaw_types::ZclawError::NotFound(
                format!("Agent not found: {}", id)
            ));
        }

        // Validate capabilities
        self.capabilities.validate(&config.capabilities)?;

        // Save updated config to memory
        self.memory.save_agent(&config).await?;

        // Update in registry (preserves state and message count)
        self.registry.update(config.clone());

        // Emit event
        self.events.publish(Event::AgentConfigUpdated {
            agent_id: id,
            name: config.name.clone(),
        });

        Ok(())
    }

    /// List all agents
    pub fn list_agents(&self) -> Vec<AgentInfo> {
        self.registry.list()
    }

    /// Get agent info
    pub fn get_agent(&self, id: &AgentId) -> Option<AgentInfo> {
        self.registry.get_info(id)
    }

    /// Get agent config (for export)
    pub fn get_agent_config(&self, id: &AgentId) -> Option<AgentConfig> {
        self.registry.get(id)
    }
}