import Foundation

public class MarkBaseFSOperations {
    private var frameIndexTable: FrameIndexTable
    
    public init(frameIndexTable: FrameIndexTable) {
        self.frameIndexTable = frameIndexTable
    }
    
    // Basic file operations
    func createFile(path: String, completionHandler: @escaping (Error?) -> Void) {
        print("Creating file: \(path)")
        
        // Placeholder implementation
        // In full implementation, this would interact with Frame Index Table
        
        completionHandler(nil)
    }
    
    func readFile(path: String, completionHandler: @escaping (Data?, Error?) -> Void) {
        print("Reading file: \(path)")
        
        // Placeholder implementation
        // In full implementation, this would read from Frame Index Table
        
        completionHandler(nil, nil)
    }
    
    func writeFile(path: String, data: Data, completionHandler: @escaping (Error?) -> Void) {
        print("Writing file: \(path)")
        
        // Placeholder implementation
        // In full implementation, this would write to Frame Index Table
        
        completionHandler(nil)
    }
    
    func deleteFile(path: String, completionHandler: @escaping (Error?) -> Void) {
        print("Deleting file: \(path)")
        
        // Placeholder implementation
        // In full implementation, this would delete from Frame Index Table
        
        completionHandler(nil)
    }
    
    func listDirectory(path: String, completionHandler: @escaping ([String]?, Error?) -> Void) {
        print("Listing directory: \(path)")
        
        // Placeholder implementation
        // In full implementation, this would list from Frame Index Table
        
        completionHandler([], nil)
    }
    
    // Metadata operations
    func getFileMetadata(path: String, completionHandler: @escaping ([String: Any]?, Error?) -> Void) {
        print("Getting metadata for: \(path)")
        
        // Placeholder implementation
        // In full implementation, this would query Frame Index Table
        
        let metadata: [String: Any] = [
            "path": path,
            "size": 0,
            "created": Date(),
            "modified": Date(),
            "type": "file"
        ]
        
        completionHandler(metadata, nil)
    }
    
    // Frame-specific operations
    func getFrameInfo(frameId: String) -> [String: Any]? {
        // Query Frame Index Table
        return frameIndexTable.getFrame(frameId: frameId)
    }
    
    func lockFrame(frameId: String, completionHandler: @escaping (Error?) -> Void) {
        print("Locking frame: \(frameId)")
        
        let success = frameIndexTable.lockFrame(frameId: frameId)
        
        if success {
            completionHandler(nil)
        } else {
            let error = NSError(domain: "MarkBaseFS", code: 2, userInfo: [NSLocalizedDescriptionKey: "Failed to lock frame"])
            completionHandler(error)
        }
    }
    
    func unlockFrame(frameId: String, completionHandler: @escaping (Error?) -> Void) {
        print("Unlocking frame: \(frameId)")
        
        let success = frameIndexTable.unlockFrame(frameId: frameId)
        
        if success {
            completionHandler(nil)
        } else {
            let error = NSError(domain: "MarkBaseFS", code: 3, userInfo: [NSLocalizedDescriptionKey: "Failed to unlock frame"])
            completionHandler(error)
        }
    }
}