Trouble fetching database path - swift

Question

Integrated SQLITE Database, below is my code which I have written,
AppDelegate.swift
func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {
// Override point for customization after application launch.
self.copyDatabaseIfNeeded()
return true
}
func copyDatabaseIfNeeded() {
let fileManager = FileManager.default
let dbPath = getDBPath()
var success: Bool = fileManager.fileExists(atPath: dbPath!)
if !success {
let defaultDBPath = URL(fileURLWithPath: Bundle.main.resourcePath ?? "").appendingPathComponent(APPLICATION_DB).absoluteString
success = ((try?fileManager.copyItem(atPath: defaultDBPath, toPath: dbPath!)) != nil)
if !success {
print("Failed to create writable database!")
}
}
}
func getDBPath() -> String? {
let paths = NSSearchPathForDirectoriesInDomains(.documentDirectory, .userDomainMask, true)
let documentsDir = paths[0]
return URL(fileURLWithPath: documentsDir).appendingPathComponent(APPLICATION_DB).absoluteString
}
It always print below output,
Tried clean + Build Project
Uninstall the application, reinstall it
Remove derived data
none of the above has worked.
Also, my sqlite file is there in project target -> Build Phases -> Copy Bundle Resources : below screenshot for reference.
I am not sure whether hierarchy of my file matters or not, attaching screenshot of that as well.
Can anyone help me why I am getting issue in fetching file path of my database file?

Answer 1

Try this.
func copyDatabaseIfNeeded() {
// Move database file from bundle to documents folder
let fileManager = FileManager.default
let documentsUrl = fileManager.urls(for: .documentDirectory,
in: .userDomainMask)
guard documentsUrl.count != 0 else {
return // Could not find documents URL
}
let finalDatabaseURL = documentsUrl.first!.appendingPathComponent("SQL.sqlite")
if !( (try? finalDatabaseURL.checkResourceIsReachable()) ?? false) {
print("DB does not exist in documents folder")
let documentsURL = Bundle.main.resourceURL?.appendingPathComponent("SQL.sqlite")
do {
try fileManager.copyItem(atPath: (documentsURL?.path)!, toPath: finalDatabaseURL.path)
} catch let error as NSError {
print("Couldn't copy file to final location! Error:\(error.description)")
}
} else {
print("Database file found at path: \(finalDatabaseURL.path)")
}
}