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import Foundation
import UniformTypeIdentifiers
extension URL {
func generateUniqueFilePath(filename base: String) -> String {
let fileManager = FileManager.default
var finalName = base
var counter = 2
// Helper function to generate a new filename with a counter
func makeFileName() -> String {
let baseName = (base as NSString).deletingPathExtension
let extensionName = (base as NSString).pathExtension
return extensionName.isEmpty ? "\(baseName) \(counter)" : "\(baseName) \(counter).\(extensionName)"
}
// Check if file exists and append counter until a unique name is found
var filePath = self.appending(component: finalName).path(percentEncoded: false)
while fileManager.fileExists(atPath: filePath) {
finalName = makeFileName()
filePath = self.appending(component: finalName).path(percentEncoded: false)
counter += 1
}
return filePath
}
}
extension UTType {
var canBePreviewedByQuickLook: Bool {
// QuickLook supports most common document types
let supportedSupertypes: [UTType] = [
.image,
.movie,
.audio,
.pdf,
.font,
.usdz,
.text,
.sourceCode,
.spreadsheet,
.presentation,
// Microsoft Office
.init(filenameExtension: "doc")!,
.init(filenameExtension: "docx")!,
.init(filenameExtension: "xls")!,
.init(filenameExtension: "xlsx")!,
.init(filenameExtension: "ppt")!,
.init(filenameExtension: "pptx")!,
]
return supportedSupertypes.contains { self.conforms(to: $0) }
}
}
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