//! Application state management
//!
//! This module contains the shared application state that is passed to all
//! route handlers and provides access to database connections, configuration,
//! and other shared resources.

#![allow(dead_code)] // Prepared for future use

use std::sync::Arc;
use tokio::sync::RwLock;

/// Database connection pool type
/// This would typically be a real connection pool in production
pub type DbPool = Arc<RwLock<()>>;

/// Application state shared across all handlers
#[derive(Clone)]
pub struct AppState {
    /// Database connection pool
    pub conn: Arc<std::sync::Mutex<()>>,
    /// Configuration cache
    pub config: Arc<RwLock<std::collections::HashMap<String, String>>>,
    /// Session store
    pub sessions: Arc<RwLock<std::collections::HashMap<String, Session>>>,
}

/// User session information
#[derive(Clone, Debug)]
pub struct Session {
    pub user_id: String,
    pub username: String,
    pub email: String,
    pub created_at: chrono::DateTime<chrono::Utc>,
    pub expires_at: chrono::DateTime<chrono::Utc>,
}

impl AppState {
    /// Create a new application state
    pub fn new() -> Self {
        Self {
            conn: Arc::new(std::sync::Mutex::new(())),
            config: Arc::new(RwLock::new(std::collections::HashMap::new())),
            sessions: Arc::new(RwLock::new(std::collections::HashMap::new())),
        }
    }
}

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