import MapKit

@MainActor
protocol CustomerLocationService {
    func coordinate(for address: String) async throws -> CLLocationCoordinate2D
}

enum CustomerLocationError: Error {
    case notFound
}

@MainActor
struct AppleMapsCustomerLocationService: CustomerLocationService {
    func coordinate(for address: String) async throws -> CLLocationCoordinate2D {
        guard let request = MKGeocodingRequest(addressString: address) else {
            throw CustomerLocationError.notFound
        }
        let items: [MKMapItem]
        do {
            items = try await request.mapItems
        } catch let error as MKError where error.code == .placemarkNotFound {
            throw CustomerLocationError.notFound
        }
        try Task.checkCancellation()
        guard let item = items.first else { throw CustomerLocationError.notFound }
        return item.location.coordinate
    }
}