import Foundation
import FSKit

enum MountError: Error {
    case extensionNotAvailable
    case mountFailed(String)
    case unmountFailed(String)
    case invalidPath
}

class MountService {
    private var currentMountPoint: URL?
    private let defaultMountPoint = URL(fileURLWithPath: "/Volumes/MarkBase_warren")
    private let fsClient = FSClient.shared
    
    func mount() -> Result<Void, MountError> {
        print("Attempting to mount MarkBaseFS...")
        
        fsClient.fetchInstalledExtensions { extensions, error in
            if let error = error {
                print("ERROR fetching extensions: \(error)")
                return
            }
            
            guard let extensions = extensions else {
                print("ERROR: No extensions returned")
                return
            }
            
            print("Found \(extensions.count) FSKit Extensions")
            let markbaseExtension = extensions.filter { $0.bundleIdentifier.contains("markbase") }
            
            if markbaseExtension.isEmpty {
                print("ERROR: MarkBaseFS Extension not found")
                return
            }
            
            print("MarkBaseFS Extension found: \(markbaseExtension.first!.bundleIdentifier)")
        }
        
        let mountPoint = defaultMountPoint
        
        if !FileManager.default.fileExists(atPath: mountPoint.path) {
            do {
                try FileManager.default.createDirectory(at: mountPoint, withIntermediateDirectories: true)
                print("Created mount point: \(mountPoint.path)")
            } catch {
                print("ERROR creating mount point: \(error)")
                return .failure(.invalidPath)
            }
        }
        
        currentMountPoint = mountPoint
        
        print("Mount successful (placeholder - will use FSKit API)")
        return .success(())
    }
    
    func unmount() -> Result<Void, MountError> {
        print("Attempting to unmount MarkBaseFS...")
        
        guard let mountPoint = currentMountPoint else {
            print("No active mount")
            return .failure(.unmountFailed("No active mount"))
        }
        
        print("Unmounting: \(mountPoint.path)")
        
        currentMountPoint = nil
        
        print("Unmount successful (placeholder - will use FSKit API)")
        return .success(())
    }
    
    func getMountStatus() -> String {
        if currentMountPoint != nil {
            return "Mounted at \(currentMountPoint!.path)"
        } else {
            return "Unmounted"
        }
    }
}