Wallet Passes — Poster Generic, New Barcodes & Featured Actions

import Foundation
import PassBuilder

// Model representing a dog membership loaded from your database
struct DogMember {
    let name: String
    let membershipID: String
    let favoriteToy: String
    let photoURL: URL
}

// Creates a signed .pkpass file personalized for a single member
func createPass(for dog: DogMember, templateURL: URL, outputDirectory: URL) async throws -> URL {
    // Load the .pkpasstemplate created in Pass Designer
    var package = try PassPackage(contentsOf: templateURL)

    // Personalize pass fields
    try package.pass.fields.setValue(dog.name, forKey: "DOG_NAME")
    try package.pass.fields.setValue(dog.membershipID, forKey: "DOG_ID")
    try package.pass.fields.setValue(dog.favoriteToy, forKey: "LOVES")

    // Set the background image to the dog's photo
    package.backgroundImage = PassImage(contentsOf: dog.photoURL)

    // Configure a PDF417 barcode encoding the membership ID
    let barcode = Pass.Barcode(
        message: dog.membershipID,
        format: .PDF417
    )
    package.pass.barcodes = [barcode]

    // Add a featured action so clients can view membership benefits
    let benefitsAction = Pass.Action(
        identifier: "view-membership-benefits",
        type: .membershipBenefits,
        value: URL(string: "https://staceydogdaycare.example.com/benefits")!
    )
    package.pass.featuredActions = [benefitsAction]

    // Load signing certificates
    let passCert = try PassCertificate(contentsOf: URL(fileURLWithPath: "/certs/pass.p12"), passphrase: "secret")
    let wwdrCert = try PassCertificate(contentsOf: URL(fileURLWithPath: "/certs/wwdr.pem"))

    // Sign and write the .pkpass file
    let signer = PassSigner(passCertificate: passCert, wwdrCertificate: wwdrCert)
    let outputURL = outputDirectory.appendingPathComponent("\(dog.membershipID).pkpass")
    try await signer.signPass(package, writingTo: outputURL)

    return outputURL
}