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✨ Add support for automatic push environment detection
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,144 @@ | ||
| // | ||
| // PushEnvironment.swift | ||
| // Appcues | ||
| // | ||
| // Created by Matt on 2024-05-21. | ||
| // | ||
|
|
||
| import UIKit | ||
|
|
||
| internal enum PushEnvironment { | ||
| case unknown(Reason) | ||
| case development | ||
| case production | ||
|
|
||
| enum PushEnvironmentError: LocalizedError { | ||
| case noEntitlementsKey | ||
| case noEnvironmentKey | ||
| case unexpectedEnvironment(String) | ||
|
|
||
| var errorDescription: String? { | ||
| switch self { | ||
| case .noEntitlementsKey: return "No 'Entitlements' key" | ||
| case .noEnvironmentKey: return "No entitlement 'aps-environment' key" | ||
| case .unexpectedEnvironment(let value): return "Unexpected 'aps-environment' value '\(value)'" | ||
| } | ||
| } | ||
| } | ||
|
|
||
| enum Reason { | ||
| case notComputed, error(Error) | ||
|
|
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| var description: String { | ||
| switch self { | ||
| case .notComputed: return "Value not computed" | ||
| case .error(let error): return error.localizedDescription | ||
| } | ||
| } | ||
| } | ||
|
|
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| var environmentValue: String { | ||
| // The environment to request from the backend must be "development" or "production". | ||
| // If we haven't been able to determine the environment, default to "production". | ||
| switch self { | ||
| case .development: return "development" | ||
| case .unknown, .production: return "production" | ||
| } | ||
| } | ||
|
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| init?(value: String) { | ||
| switch value { | ||
| case "development": self = .development | ||
| case "production": self = .production | ||
| default: return nil | ||
| } | ||
| } | ||
| } | ||
|
|
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| extension UIDevice { | ||
| enum ProvisioningProfileError: LocalizedError { | ||
| case noEmbeddedProfile | ||
| case plistScanFailed | ||
| case plistSerializationFailed | ||
|
|
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| var errorDescription: String? { | ||
| switch self { | ||
| case .noEmbeddedProfile: return "No 'embedded.mobileprovision' found in bundle" | ||
| case .plistScanFailed: return "Property list scan failed" | ||
| case .plistSerializationFailed: return "Property list serialization failed" | ||
| } | ||
| } | ||
| } | ||
|
|
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| func pushEnvironment() -> PushEnvironment { | ||
| #if targetEnvironment(simulator) | ||
| return .development | ||
| #else | ||
| do { | ||
| let provisioningProfile = try UIDevice.current.provisioningProfile() | ||
|
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| guard let entitlements = provisioningProfile["Entitlements"] as? [String: Any] else { | ||
| return .unknown(.error(PushEnvironment.PushEnvironmentError.noEntitlementsKey)) | ||
| } | ||
|
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| guard let environment = entitlements["aps-environment"] as? String else { | ||
| return .unknown(.error(PushEnvironment.PushEnvironmentError.noEnvironmentKey)) | ||
| } | ||
|
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| guard let pushEnvironment = PushEnvironment(value: environment) else { | ||
| return .unknown(.error(PushEnvironment.PushEnvironmentError.unexpectedEnvironment(environment))) | ||
| } | ||
|
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| return pushEnvironment | ||
| } catch ProvisioningProfileError.noEmbeddedProfile { | ||
| // App Store apps do not contain an embedded provisioning profile, | ||
| // and since we know we're not on a simulator, that means it's "production". | ||
| return .production | ||
| } catch { | ||
| return .unknown(.error(error)) | ||
| } | ||
| #endif | ||
| } | ||
|
|
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| private func provisioningProfile() throws -> [String: Any] { | ||
| guard let path = Bundle.main.path(forResource: "embedded", ofType: "mobileprovision") else { | ||
| throw ProvisioningProfileError.noEmbeddedProfile | ||
| } | ||
|
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| let binaryString = try String(contentsOfFile: path, encoding: .isoLatin1) | ||
|
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| let scanner = Scanner(string: binaryString) | ||
| let plistString: String | ||
|
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| if #available(iOS 13.0, *) { | ||
| guard scanner.scanUpToString("<plist") != nil, | ||
| let targetString = scanner.scanUpToString("</plist>") | ||
| else { | ||
| throw ProvisioningProfileError.plistScanFailed | ||
| } | ||
| plistString = targetString | ||
| } else { | ||
| // swiftlint:disable:next legacy_objc_type | ||
| var targetString: NSString? | ||
|
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| guard scanner.scanUpTo("<plist", into: nil), | ||
| scanner.scanUpTo("</plist>", into: &targetString), | ||
| let targetString = targetString | ||
| else { | ||
| throw ProvisioningProfileError.plistScanFailed | ||
| } | ||
| plistString = targetString as String | ||
| } | ||
|
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| guard let plistData = (plistString + "</plist>").data(using: .isoLatin1) else { | ||
| throw ProvisioningProfileError.plistScanFailed | ||
| } | ||
|
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| guard let serializedPlist = try PropertyListSerialization.propertyList(from: plistData, options: [], format: nil) as? [String: Any] | ||
| else { | ||
| throw ProvisioningProfileError.plistSerializationFailed | ||
| } | ||
|
|
||
| return serializedPlist | ||
| } | ||
| } |
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