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+import Foundation
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+class DatabaseHelper {
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+
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+ var sharedDbFile: String {
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+ guard let fileContainer = FileManager.default.containerURL(forSecurityApplicationGroupIdentifier: "group.eu.merlinux.group.chat.delta.ios") else {
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+ return ""
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+ }
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+ let storeURL = fileContainer.appendingPathComponent("messenger.db")
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+ return storeURL.path
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+ }
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+
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+ var localDbFile: String {
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+ return localDocumentsDir.appendingPathComponent("messenger.db").path
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+ }
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+
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+ var sharedDbBlobsDir: String {
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+ guard let fileContainer = FileManager.default.containerURL(forSecurityApplicationGroupIdentifier: "group.eu.merlinux.group.chat.delta.ios") else {
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+ return ""
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+ }
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+ return fileContainer.appendingPathComponent("messenger.db-blobs").path
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+ }
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+
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+ var localBlobsDir: String {
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+ return localDocumentsDir.appendingPathComponent("messenger.db-blobs").path
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+ }
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+
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+ var localDocumentsDir: URL {
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+ let paths = NSSearchPathForDirectoriesInDomains(.libraryDirectory, .userDomainMask, true)
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+ return URL(fileURLWithPath: paths[0], isDirectory: true)
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+ }
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+
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+ var currentDatabaseLocation: String {
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+ let filemanager = FileManager.default
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+ if filemanager.fileExists(atPath: localDbFile) {
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+ return localDbFile
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+ }
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+ return sharedDbFile
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+ }
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+
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+ func clearSharedDbBlobsDir() {
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+ let fileManager = FileManager.default
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+ do {
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+ if fileManager.fileExists(atPath: sharedDbBlobsDir) {
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+ let filePaths = try fileManager.contentsOfDirectory(atPath: sharedDbBlobsDir)
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+ for filePath in filePaths {
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+ let completePath = URL(fileURLWithPath: sharedDbBlobsDir).appendingPathComponent(filePath)
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+ try fileManager.removeItem(atPath: completePath.path)
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+ }
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+ try fileManager.removeItem(atPath: sharedDbBlobsDir)
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+ }
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+ } catch {
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+ logger.error("Could not clean shared blobs dir, it might be it didn't exist")
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+ }
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+ }
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+
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+ func clearSharedDb() {
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+ let filemanager = FileManager.default
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+ if filemanager.fileExists(atPath: sharedDbFile) {
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+ try? filemanager.removeItem(atPath: sharedDbFile)
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+ }
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+ }
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+
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+ func moveBlobsFolder() {
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+ let filemanager = FileManager.default
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+ if filemanager.fileExists(atPath: localBlobsDir) {
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+ do {
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+ clearSharedDbBlobsDir()
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+ try filemanager.moveItem(at: URL(fileURLWithPath: localBlobsDir), to: URL(fileURLWithPath: sharedDbBlobsDir))
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+ } catch let error {
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+ logger.error("Could not move db blobs directory to shared space: \(error.localizedDescription)")
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+ }
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+ }
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+ }
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+
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+ func updateDatabaseLocation() -> String? {
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+ let filemanager = FileManager.default
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+ if filemanager.fileExists(atPath: localDbFile) {
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+ do {
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+ clearSharedDb()
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+ try filemanager.moveItem(at: URL(fileURLWithPath: localDbFile), to: URL(fileURLWithPath: sharedDbFile))
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+ moveBlobsFolder()
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+ } catch let error {
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+ logger.error("Could not update DB location. Share extension will probably not work. \n\(error.localizedDescription)")
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+ return localDbFile
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+ }
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+ }
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+
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+ return sharedDbFile
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+ }
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+
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+ func testMove(toShared: Bool) -> String? {
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+ if toShared {
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+ return updateDatabaseLocation()
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+ } else {
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+ return reverse()
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+ }
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+ }
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+
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+ func reverse() -> String? {
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+ let filemanager = FileManager.default
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+ if filemanager.fileExists(atPath: sharedDbFile) {
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+ do {
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+ if filemanager.fileExists(atPath: localDbFile) {
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+ logger.debug("remove local DB first, in order to move DB from shared to local space")
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+ try? filemanager.removeItem(atPath: localDbFile)
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+ }
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+ try filemanager.moveItem(at: URL(fileURLWithPath: sharedDbFile), to: URL(fileURLWithPath: localDbFile))
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+ let filemanager = FileManager.default
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+ if filemanager.fileExists(atPath: sharedDbBlobsDir) {
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+ if filemanager.fileExists(atPath: localBlobsDir) {
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+ try? filemanager.removeItem(atPath: localBlobsDir)
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+ }
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+ do {
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+ try filemanager.moveItem(at: URL(fileURLWithPath: sharedDbBlobsDir), to: URL(fileURLWithPath: localBlobsDir))
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+ } catch let error {
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+ logger.error("Could not move db blobs directory to shared space: \(error.localizedDescription)")
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+ }
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+ }
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+
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+ } catch let error {
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+ logger.error("Could not update DB location. Share extension will probably not work. \n\(error.localizedDescription)")
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+ return sharedDbFile
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+ }
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+ }
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+ return localDbFile
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+ }
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+
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+}
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cyberta