# [DEF:Dependencies:Module]
# @SEMANTICS: dependency, injection, singleton, factory
# @PURPOSE: Manages the creation and provision of shared application dependencies, such as the PluginLoader and TaskManager, to avoid circular imports.
# @LAYER: Core
# @RELATION: Used by the main app and API routers to get access to shared instances.

from pathlib import Path
from .core.plugin_loader import PluginLoader
from .core.task_manager import TaskManager
from .core.config_manager import ConfigManager
from .core.scheduler import SchedulerService
from .core.database import init_db
from .core.logger import logger, belief_scope

# Initialize singletons
# Use absolute path relative to this file to ensure plugins are found regardless of CWD
project_root = Path(__file__).parent.parent.parent
config_path = project_root / "config.json"
config_manager = ConfigManager(config_path=str(config_path))

# Initialize database before any other services that might use it
init_db()

# [DEF:get_config_manager:Function]
# @PURPOSE: Dependency injector for the ConfigManager.
# @PRE: Global config_manager must be initialized.
# @POST: Returns shared ConfigManager instance.
# @RETURN: ConfigManager - The shared config manager instance.
def get_config_manager() -> ConfigManager:
    """Dependency injector for the ConfigManager."""
    with belief_scope("get_config_manager"):
        return config_manager
# [/DEF:get_config_manager:Function]

plugin_dir = Path(__file__).parent / "plugins"

plugin_loader = PluginLoader(plugin_dir=str(plugin_dir))
logger.info(f"PluginLoader initialized with directory: {plugin_dir}")
logger.info(f"Available plugins: {[config.name for config in plugin_loader.get_all_plugin_configs()]}")

task_manager = TaskManager(plugin_loader)
logger.info("TaskManager initialized")

scheduler_service = SchedulerService(task_manager, config_manager)
logger.info("SchedulerService initialized")

# [DEF:get_plugin_loader:Function]
# @PURPOSE: Dependency injector for the PluginLoader.
# @PRE: Global plugin_loader must be initialized.
# @POST: Returns shared PluginLoader instance.
# @RETURN: PluginLoader - The shared plugin loader instance.
def get_plugin_loader() -> PluginLoader:
    """Dependency injector for the PluginLoader."""
    with belief_scope("get_plugin_loader"):
        return plugin_loader
# [/DEF:get_plugin_loader:Function]

# [DEF:get_task_manager:Function]
# @PURPOSE: Dependency injector for the TaskManager.
# @PRE: Global task_manager must be initialized.
# @POST: Returns shared TaskManager instance.
# @RETURN: TaskManager - The shared task manager instance.
def get_task_manager() -> TaskManager:
    """Dependency injector for the TaskManager."""
    with belief_scope("get_task_manager"):
        return task_manager
# [/DEF:get_task_manager:Function]

# [DEF:get_scheduler_service:Function]
# @PURPOSE: Dependency injector for the SchedulerService.
# @PRE: Global scheduler_service must be initialized.
# @POST: Returns shared SchedulerService instance.
# @RETURN: SchedulerService - The shared scheduler service instance.
def get_scheduler_service() -> SchedulerService:
    """Dependency injector for the SchedulerService."""
    with belief_scope("get_scheduler_service"):
        return scheduler_service
# [/DEF:get_scheduler_service:Function]

# [/DEF:Dependencies:Module]