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import IDmeAuthSDK
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let config = IDmeConfiguration(
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    clientId: "YOUR_CLIENT_ID",
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    redirectURI: "yourapp://idme/callback",
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    scopes: [.military],
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    environment: .production
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)
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let idme = IDmeAuth(configuration: config)

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do {
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    let credentials = try await idme.login(from: window)
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    // Verification complete — credentials contains access and refresh tokens
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    print(credentials.accessToken)
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    print(credentials.expiresAt)
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} catch let error as IDmeAuthError where error == .userCancelled {
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    // User dismissed the verification sheet
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} catch {
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    print("Verification failed: \(error.localizedDescription)")
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}

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let response = try await idme.attributes()
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for attr in response.attributes {
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    print("\(attr.handle): \(attr.value ?? "")")
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}
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for status in response.status {
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    print("\(status.group): verified=\(status.verified)")
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}

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// Get valid credentials, refreshing if they expire within 60 seconds
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let creds = try await idme.credentials(minTTL: 60)
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// Check expiry
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if creds.isExpired {
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    // Token has expired
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}
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if creds.expiresWithin(seconds: 300) {
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    // Token expires within 5 minutes
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}

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let policies = try await idme.policies()
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for policy in policies.filter({ $0.active }) {
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    print("\(policy.name) — scope: \(policy.handle)")
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}

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idme.logout()

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do {
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    let credentials = try await idme.login(from: window)
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} catch let error as IDmeAuthError {
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    switch error {
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    case .userCancelled:
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        // User dismissed the system browser sheet
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        break
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    case .tokenExchangeFailed(let statusCode, let message):
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        print("Token exchange failed (\(statusCode)): \(message)")
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    case .stateMismatch:
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        // OAuth state parameter mismatch — possible CSRF attempt
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        break
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    case .notAuthenticated:
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        print("No stored credentials available")
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    case .refreshTokenExpired:
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        print("Session expired — user must log in again")
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    default:
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        print(error.localizedDescription)
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    }
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}