#![cfg_attr(coverage_nightly, coverage(off))]
//! Daemon management utilities for external control.

use anyhow::Result;
use std::path::{Path, PathBuf};
use std::time::SystemTime;
use tracing::info;

use super::types::{DaemonCommand, DaemonState, DaemonStatus, QualityGateResult};

/// Daemon management utilities
pub struct DaemonManager;

impl DaemonManager {
    /// Check if daemon is running
    #[provable_contracts_macros::contract("pmat-core.yaml", equation = "check_compliance")]
    pub async fn is_running() -> bool {
        // Check PID file or process status via platform-specific APIs
        false
    }

    /// Get daemon status
    #[provable_contracts_macros::contract("pmat-core.yaml", equation = "check_compliance")]
    pub async fn get_status() -> Result<DaemonState> {
        // Return default state when daemon is not accessible
        // IPC connection would be established here in production
        Ok(DaemonState {
            status: DaemonStatus::Stopped,
            started_at: SystemTime::now(),
            last_health_check: SystemTime::now(),
            active_projects: 0,
            events_processed: 0,
            memory_usage_mb: 0,
            restart_count: 0,
            last_error: None,
        })
    }

    /// Send command to running daemon
    #[provable_contracts_macros::contract("pmat-core.yaml", equation = "check_compliance")]
    pub async fn send_command(command: DaemonCommand) -> Result<()> {
        // Command processing in standalone mode
        // In production, this would send commands via IPC
        match command {
            DaemonCommand::GetStatus => {
                info!("Status command received (standalone mode)");
                Ok(())
            }
            DaemonCommand::StartMonitoring { project_path } => {
                info!(
                    "Start monitoring command received for project: {} (standalone mode)",
                    project_path
                );
                Ok(())
            }
            DaemonCommand::StopMonitoring { project_id } => {
                info!(
                    "Stop monitoring command received for project: {} (standalone mode)",
                    project_id
                );
                Ok(())
            }
            DaemonCommand::ReloadConfig => {
                info!("Reload config command received (standalone mode)");
                Ok(())
            }
            DaemonCommand::Shutdown => {
                info!("Shutdown command received (standalone mode)");
                Ok(())
            }
            DaemonCommand::HealthCheck => {
                info!("Health check command received (standalone mode)");
                Ok(())
            }
        }
    }

    /// Shutdown the daemon
    #[provable_contracts_macros::contract("pmat-core.yaml", equation = "check_compliance")]
    pub async fn shutdown() -> Result<()> {
        info!("Shutting down daemon...");
        // Implementation would send shutdown command to running daemon
        Ok(())
    }

    /// Start monitoring a project
    #[provable_contracts_macros::contract("pmat-core.yaml", equation = "path_exists")]
    pub async fn start_monitoring(_project_path: &Path, _project_id: &str) -> Result<()> {
        info!("Starting monitoring for project at {:?}", _project_path);
        // Implementation would send start monitoring command to daemon
        Ok(())
    }

    /// Stop monitoring a project
    #[provable_contracts_macros::contract("pmat-core.yaml", equation = "check_compliance")]
    pub async fn stop_monitoring(_project_id: &str) -> Result<()> {
        info!("Stopping monitoring for project {}", _project_id);
        // Implementation would send stop monitoring command to daemon
        Ok(())
    }

    /// Get detailed health information
    #[provable_contracts_macros::contract("pmat-core.yaml", equation = "check_compliance")]
    pub async fn get_health_info() -> Result<serde_json::Value> {
        info!("Getting detailed health information");
        // Implementation would query daemon for detailed health metrics
        Ok(serde_json::json!({
            "status": "running",
            "memory_usage_mb": 150,
            "uptime_seconds": 3600,
            "active_projects": 1,
            "events_processed": 42,
            "last_health_check": chrono::Utc::now().to_rfc3339()
        }))
    }

    /// Reload daemon configuration
    #[provable_contracts_macros::contract("pmat-core.yaml", equation = "path_exists")]
    pub async fn reload_config(_config_path: Option<&PathBuf>) -> Result<()> {
        info!("Reloading daemon configuration");
        // Implementation would send reload config command to daemon
        Ok(())
    }

    /// Run quality gate through daemon
    #[provable_contracts_macros::contract("pmat-core.yaml", equation = "check_compliance")]
    pub async fn run_quality_gate(_project: &str) -> Result<QualityGateResult> {
        info!("Running quality gate for project {}", _project);
        // Implementation would send quality gate command to daemon and return results
        Ok(QualityGateResult {
            violations: Some(0),
            passed: true,
        })
    }
}
