import Foundation

public struct CreateFoldersTask {

    // MARK: Properties

    private let fileService: FileServicing

    // MARK: Initialisers
    
    public init(fileService: FileServicing) {
        self.fileService = fileService
    }
    
    // MARK: Functions
    
    public func callAsFunction(at rootFolder: URL) async throws {
        let folders = Self.foldersToCreate.map { rootFolder.appendingPath($0) }
        
        for folder in folders {
            try await fileService.createFolder(at: folder)
        }
    }
    
}

// MARK: - Helpers

extension CreateFoldersTask {
    
    // MARK: Constants
    
    static let foldersToCreate: [String] = [
        .folderApp,
        .folderAppInfrastructure,
        .folderAppTestCases,
        .folderAppTestSources
    ]
    
}

// MARK: - String+Constants

private extension String {
    static let folderApp = "Sources/App"
    static let folderAppInfrastructure = "Sources/AppInfrastructure"
    static let folderAppTestCases = "Tests/App/Cases"
    static let folderAppTestSources = "Tests/App/Sources"
}