//! Nyashランタイムモジュール
//!
//! プラグインシステムとBox管理の中核

pub mod box_registry;
pub mod core_box_ids; // Phase 87: CoreBoxId/CoreMethodId 型安全enum
pub mod core_services; // Phase 91: CoreServices trait 定義
pub mod deprecations;
pub mod gc;
pub mod plugin_host; // Phase 91: PluginHost skeleton
pub mod ring0; // Phase 88: Ring0Context - OS API 抽象化レイヤー
pub mod gc_controller;
pub mod gc_mode;
pub mod gc_trace;
pub mod global_hooks;
pub mod leak_tracker;
pub mod nyash_runtime;
pub mod observe; // Lightweight observability flags (OOB etc.)
pub mod plugin_config;
pub mod plugin_ffi_common;
pub mod plugin_loader_unified;
pub mod plugin_loader_v2;
pub mod provider_lock;
pub mod provider_verify;
pub mod scheduler;
pub mod semantics;
pub mod unified_registry; // Deprecation warnings with warn-once guards
                          // pub mod plugin_box;  // legacy - 古いPluginBox
                          // pub mod plugin_loader;  // legacy - Host VTable使用
pub mod extern_registry; // ExternCall (env.*) 登録・診断用レジストリ
pub mod host_api; // C ABI: plugins -> host 逆呼び出しAPI（TLSでVMに橋渡し）
pub mod host_handles; // C ABI(TLV) 向け HostHandle レジストリ（ユーザー/内蔵Box受け渡し）
pub mod modules_registry;
pub mod type_box_abi; // Phase 12: Nyash ABI (vtable) 雛形
pub mod type_meta;
pub mod type_registry; // Phase 12: TypeId→TypeBox 解決（雛形） // env.modules minimal registry

#[cfg(test)]
mod tests;

pub use box_registry::{get_global_registry, BoxFactoryRegistry, BoxProvider};
pub use core_box_ids::{CoreBoxCategory, CoreBoxId, CoreMethodId}; // Phase 87: 型安全enum
pub use plugin_config::PluginConfig;
pub use ring0::{get_global_ring0, init_global_ring0, Ring0Context}; // Phase 88: Ring0 公開 API
pub use plugin_host::CoreInitError; // Phase 92: CoreServices 初期化エラー
pub use plugin_loader_unified::{
    get_global_plugin_host, init_global_plugin_host, MethodHandle, PluginBoxType, PluginHost,
    PluginLibraryHandle,
};
pub use plugin_loader_v2::{get_global_loader_v2, init_global_loader_v2, PluginLoaderV2};
pub mod cache_versions;
pub use gc::{BarrierKind, GcHooks};
pub use nyash_runtime::{NyashRuntime, NyashRuntimeBuilder};
pub use scheduler::{Scheduler, SingleThreadScheduler};
pub use unified_registry::{
    get_global_unified_registry, init_global_unified_registry, register_user_defined_factory,
};
// pub use plugin_box::PluginBox;  // legacy
// Use unified plugin loader (formerly v2)
// pub use plugin_loader::{PluginLoaderV2 as PluginLoader, get_global_loader_v2 as get_global_loader};  // legacy

// Phase 95: CoreServices 用 global accessor
use std::sync::{Arc, OnceLock};
static GLOBAL_CORE_PLUGIN_HOST: OnceLock<Arc<plugin_host::PluginHost>> = OnceLock::new();

pub fn init_core_plugin_host(host: plugin_host::PluginHost) {
    GLOBAL_CORE_PLUGIN_HOST
        .set(Arc::new(host))
        .expect("[Phase 95] CorePluginHost already initialized");
}

pub fn get_core_plugin_host() -> Arc<plugin_host::PluginHost> {
    GLOBAL_CORE_PLUGIN_HOST
        .get()
        .expect("[Phase 95] CorePluginHost not initialized")
        .clone()
}

/// Phase 98: Safe accessor that returns None if not initialized
pub fn try_get_core_plugin_host() -> Option<Arc<plugin_host::PluginHost>> {
    GLOBAL_CORE_PLUGIN_HOST.get().cloned()
}

/// Phase 98: Helper macro to print using ConsoleService if available, otherwise eprintln
#[macro_export]
macro_rules! console_println {
    ($($arg:tt)*) => {
        if let Some(host) = $crate::runtime::try_get_core_plugin_host() {
            host.core.console.println(&format!($($arg)*));
        } else {
            eprintln!($($arg)*);
        }
    };
}

/// Runtime 初期化（Phase 95: global accessor 実装完了）
///
/// Phase 94: フォールバック削除 - 常に実際の Box を使用
/// Phase 95: global に登録して get_core_plugin_host() でアクセス可能に
pub fn initialize_runtime(ring0: std::sync::Arc<Ring0Context>) -> Result<(), CoreInitError> {
    use crate::box_factory::UnifiedBoxRegistry;
    use crate::box_factory::builtin::BuiltinBoxFactory;

    let mut registry = UnifiedBoxRegistry::with_env_policy();

    // Phase 94: BuiltinBoxFactory を登録して core_required Boxes を提供
    registry.register(std::sync::Arc::new(BuiltinBoxFactory::new()));

    // Phase 94: 常に実際の Box → Service 変換を使用（Fail-Fast原則）
    let plugin_host = plugin_host::PluginHost::with_core_from_registry(ring0, &registry)?;
    plugin_host.ensure_core_initialized();

    // Phase 95: global に登録
    init_core_plugin_host(plugin_host);

    Ok(())
}