remove old
This commit is contained in:
Michael Freno
@@ -1,200 +0,0 @@
|
||||
import Foundation
|
||||
|
||||
protocol Migration {
|
||||
var targetVersion: String { get }
|
||||
func migrate(_ data: [String: Any]) throws -> [String: Any]
|
||||
}
|
||||
|
||||
enum MigrationError: Error, LocalizedError {
|
||||
case migrationFailed(String)
|
||||
case invalidDataStructure
|
||||
case versionMismatch
|
||||
case noBackupAvailable
|
||||
|
||||
var errorDescription: String? {
|
||||
switch self {
|
||||
case .migrationFailed(let message):
|
||||
return "Migration failed: \(message)"
|
||||
case .invalidDataStructure:
|
||||
return "Invalid data structure for migration"
|
||||
case .versionMismatch:
|
||||
return "Version mismatch during migration"
|
||||
case .noBackupAvailable:
|
||||
return "No backup data available for restoration"
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
class MigrationManager {
|
||||
private let userDefaults = UserDefaults.standard
|
||||
private var migrations: [Migration] = []
|
||||
private let versionKey = "app_version"
|
||||
private let settingsKey = "gazeAppSettings"
|
||||
private let backupKey = "gazeAppSettings_backup"
|
||||
|
||||
init() {
|
||||
setupMigrations()
|
||||
}
|
||||
|
||||
func getCurrentVersion() -> String {
|
||||
return userDefaults.string(forKey: versionKey) ?? "0.0.0"
|
||||
}
|
||||
|
||||
func setCurrentVersion(_ version: String) {
|
||||
userDefaults.set(version, forKey: versionKey)
|
||||
}
|
||||
|
||||
func migrateSettingsIfNeeded() throws -> [String: Any]? {
|
||||
let currentVersion = getCurrentVersion()
|
||||
let targetVersion = getTargetVersion()
|
||||
|
||||
if isUpToDate(currentVersion: currentVersion, targetVersion: targetVersion) {
|
||||
return loadSettingsFromDefaults()
|
||||
}
|
||||
|
||||
guard let data = userDefaults.data(forKey: settingsKey) else {
|
||||
return nil
|
||||
}
|
||||
|
||||
guard let settingsData = try JSONSerialization.jsonObject(with: data) as? [String: Any] else {
|
||||
throw MigrationError.invalidDataStructure
|
||||
}
|
||||
|
||||
saveBackup(settingsData)
|
||||
|
||||
var migratedData = settingsData
|
||||
|
||||
for migration in migrations {
|
||||
if shouldMigrate(from: currentVersion, to: migration.targetVersion) {
|
||||
do {
|
||||
migratedData = try migration.migrate(migratedData)
|
||||
} catch {
|
||||
try restoreFromBackup()
|
||||
throw MigrationError.migrationFailed("Migration to \(migration.targetVersion) failed: \(error.localizedDescription)")
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
setCurrentVersion(targetVersion)
|
||||
clearBackup()
|
||||
|
||||
return migratedData
|
||||
}
|
||||
|
||||
private func setupMigrations() {
|
||||
migrations.append(Version101Migration())
|
||||
migrations.append(Version102Migration())
|
||||
}
|
||||
|
||||
private func getTargetVersion() -> String {
|
||||
if let version = Bundle.main.object(forInfoDictionaryKey: "CFBundleShortVersionString") as? String {
|
||||
return version
|
||||
}
|
||||
return "1.0.0"
|
||||
}
|
||||
|
||||
private func isUpToDate(currentVersion: String, targetVersion: String) -> Bool {
|
||||
return compareVersions(currentVersion, targetVersion) >= 0
|
||||
}
|
||||
|
||||
private func shouldMigrate(from currentVersion: String, to targetVersion: String) -> Bool {
|
||||
return compareVersions(currentVersion, targetVersion) < 0
|
||||
}
|
||||
|
||||
private func compareVersions(_ version1: String, _ version2: String) -> Int {
|
||||
let v1Components = version1.split(separator: ".").compactMap { Int($0) }
|
||||
let v2Components = version2.split(separator: ".").compactMap { Int($0) }
|
||||
|
||||
let maxLength = max(v1Components.count, v2Components.count)
|
||||
|
||||
for i in 0..<maxLength {
|
||||
let v1 = i < v1Components.count ? v1Components[i] : 0
|
||||
let v2 = i < v2Components.count ? v2Components[i] : 0
|
||||
|
||||
if v1 > v2 {
|
||||
return 1
|
||||
} else if v1 < v2 {
|
||||
return -1
|
||||
}
|
||||
}
|
||||
|
||||
return 0
|
||||
}
|
||||
|
||||
private func loadSettingsFromDefaults() -> [String: Any]? {
|
||||
guard let data = userDefaults.data(forKey: settingsKey),
|
||||
let settingsDict = try? JSONSerialization.jsonObject(with: data) as? [String: Any] else {
|
||||
return nil
|
||||
}
|
||||
return settingsDict
|
||||
}
|
||||
|
||||
private func saveBackup(_ data: [String: Any]) {
|
||||
guard let backupData = try? JSONSerialization.data(withJSONObject: data) else {
|
||||
print("Failed to create backup")
|
||||
return
|
||||
}
|
||||
userDefaults.set(backupData, forKey: backupKey)
|
||||
}
|
||||
|
||||
private func restoreFromBackup() throws {
|
||||
guard let backupData = userDefaults.data(forKey: backupKey) else {
|
||||
throw MigrationError.noBackupAvailable
|
||||
}
|
||||
|
||||
guard let backupDict = try? JSONSerialization.jsonObject(with: backupData) as? [String: Any],
|
||||
let finalData = try? JSONSerialization.data(withJSONObject: backupDict) else {
|
||||
throw MigrationError.migrationFailed("Failed to restore from backup")
|
||||
}
|
||||
|
||||
userDefaults.set(finalData, forKey: settingsKey)
|
||||
clearBackup()
|
||||
}
|
||||
|
||||
private func clearBackup() {
|
||||
userDefaults.removeObject(forKey: backupKey)
|
||||
}
|
||||
}
|
||||
|
||||
class Version101Migration: Migration {
|
||||
var targetVersion: String = "1.0.1"
|
||||
|
||||
func migrate(_ data: [String: Any]) throws -> [String: Any] {
|
||||
let migratedData = data
|
||||
|
||||
// Example migration logic:
|
||||
// Add any new fields with default values if they don't exist
|
||||
// Transform data structures as needed
|
||||
|
||||
return migratedData
|
||||
}
|
||||
}
|
||||
|
||||
class Version102Migration: Migration {
|
||||
var targetVersion: String = "1.0.2"
|
||||
|
||||
func migrate(_ data: [String: Any]) throws -> [String: Any] {
|
||||
var migratedData = data
|
||||
|
||||
// Migrate subtleReminderSizePercentage (Double) to subtleReminderSize (ReminderSize enum)
|
||||
if let oldPercentage = migratedData["subtleReminderSizePercentage"] as? Double {
|
||||
// Map old percentage values to new enum cases
|
||||
let reminderSize: String
|
||||
if oldPercentage <= 2.0 {
|
||||
reminderSize = "small"
|
||||
} else if oldPercentage <= 3.5 {
|
||||
reminderSize = "medium"
|
||||
} else {
|
||||
reminderSize = "large"
|
||||
}
|
||||
|
||||
migratedData["subtleReminderSize"] = reminderSize
|
||||
migratedData.removeValue(forKey: "subtleReminderSizePercentage")
|
||||
} else if migratedData["subtleReminderSize"] == nil {
|
||||
// If neither old nor new key exists, set default
|
||||
migratedData["subtleReminderSize"] = "large"
|
||||
}
|
||||
|
||||
return migratedData
|
||||
}
|
||||
}
|
||||
Reference in New Issue
Block a user