use core.accessibility_modifier;
use core.identifier;
use core.type_system;

module Directory {
    // Language extension configuration
    syntax {
        type_system.extend({
            name: "Directory",
            category: "system_resource",
            runtime_layer: "low_level",
            platform_dependent: true,
            safety_features: {
                access_control: true,
                error_handling: true,
                async_support: true
            }
        });
    }

    // Error types specific to directory operations
    type DirectoryError {
        String code;
        String message;
        Any context;
    }

    // Permissions model
    type DirectoryPermission {
        Boolean read = False;
        Boolean write = False;
        Boolean execute = False;
        String owner;
        String group;
    }

    // Core Directory type with comprehensive system interaction
    type Directory {
        String absolute_path;
        String name;
        Integer item_count;
        DirectoryPermission permissions;
        
        // Core operations with error handling
        +proc create() -> [Boolean, DirectoryError];
        +proc exists() -> [Boolean, DirectoryError];
        +proc delete() -> [Boolean, DirectoryError];
        +proc move(String destination) -> [Boolean, DirectoryError];
        +proc copy(String destination) -> [Boolean, DirectoryError];
        
        // Advanced file system interactions
        +proc list_contents() -> [String<>, DirectoryError];
        +proc find(String pattern) -> [String<>, DirectoryError];
        +proc watch() -> [Runnable, DirectoryError]; // File system watcher
    }

    // Platform-specific implementation configuration
    implementation {
        // Base implementation with platform abstraction
        +proc create(String path) -> [Directory, DirectoryError] {
            proc native_create() -> [Directory, DirectoryError] {
                // Platform-specific directory creation
                match (SystemPlatform.current()) {
                    Windows { rtn WindowsFS.create_directory(path); }
                    Posix { rtn PosixFS.create_directory(path); }
                    MacOS { rtn MacFS.create_directory(path); }
                    error { 
                        rtn DirectoryError(
                            code: "PLATFORM_UNSUPPORTED",
                            message: "Cannot create directory on this platform"
                        ); 
                    }
                }
            }
            
            rtn native_create();
        }

        // Sophisticated error handling and async support
        +proc exists(String path) -> [Boolean, DirectoryError] {
            proc check_directory() -> [Boolean, DirectoryError] {
                try {
                    
                } attempt {
                    ok { 
                        my.result.set(SystemFS.path_exists(path));
                        my.result.and(SystemFS.is_directory(path));
                        rtn my.result; 
                    }
                    error { 
                        rtn DirectoryError(
                            code: "ACCESS_DENIED",
                            message: "Cannot access directory",
                            context: path
                        ); 
                    }
                }
            }
            
            rtn check_directory();
        }
    }

    // Cross-platform utility functions
    +fn normalize_path(String path) -> [String];
    +fn get_current_directory() -> [Directory];
    +fn get_temp_directory() -> [Directory];

    // Advanced system integration
    platform {
        windows {
            // Windows-specific optimizations
            +fn get_special_folder(String folder_type) -> [Directory];
        }
        
        posix {
            // Unix/Linux specific methods
            +fn get_home_directory() -> [Directory];
        }
    }

    // Security and access control
    security {
        +fn validate_access(Directory dir, DirectoryPermission required) -> [Boolean];
        +fn set_permissions(Directory dir, DirectoryPermission new_permissions) -> [Boolean];
    }
}