Correctly identify source of donation campaign request.

Allows displaying a default campaign in Settings even if there is no active banner campaign running.

Mastodon/Scene/HomeTimeline/HomeTimelineViewModel+Donation.swift

@@ -35,7 +35,7 @@ extension HomeTimelineViewModel {
 
             do {
                 let campaign = try await APIService.shared
-                    .getDonationCampaign(seed: seed, source: nil).value
+                    .getDonationCampaign(seed: seed, source: .banner).value
                 guard !Mastodon.Entity.DonationCampaign.hasPreviouslyDismissed(campaign.id) && !Mastodon.Entity.DonationCampaign.hasPreviouslyContributed(campaign.id) else { return }
                 onPresentDonationCampaign.send(campaign)
             } catch {

Mastodon/Scene/Settings/SettingsCoordinator.swift

@@ -49,7 +49,7 @@ class SettingsCoordinator: NSObject, Coordinator {
             let userAuthentication = s.authenticationBox.authentication
             let seed = Mastodon.Entity.DonationCampaign.donationSeed(username: userAuthentication.username, domain: userAuthentication.domain)
             do {
-                let campaign = try await APIService.shared.getDonationCampaign(seed: seed, source: nil).value
+                let campaign = try await APIService.shared.getDonationCampaign(seed: seed, source: .menu).value
                 
                 await MainActor.run {
                     s.settingsViewController.donationCampaign = campaign

MastodonSDK/Sources/MastodonCore/Service/API/APIService+Donation.swift

@@ -8,12 +8,12 @@ extension APIService {
 
     public func getDonationCampaign(
         seed: Int,
-        source: String?
+        source: Mastodon.Entity.DonationCampaign.DonationCampaignRequestSource
     ) async throws
         -> Mastodon.Response.Content<Mastodon.Entity.DonationCampaign>
     {
         let campaign = try await Mastodon.API.getDonationCampaign(
-            session: session, query: .init(seed: seed, source: source))
+            session: session, query: .init(seed: seed, source: source.queryValue))
         guard campaign.value.isValid else {
             throw Mastodon.Entity.DonationError.campaignInvalid
         }

MastodonSDK/Sources/MastodonSDK/Entity/Mastodon+Entity+DonationCampaign.swift

@@ -14,6 +14,20 @@ extension Mastodon.Entity {
 
     public struct DonationCampaign: Codable {
         
+        public enum DonationCampaignRequestSource {
+            case banner
+            case menu
+            
+            public var queryValue: String? {
+                switch self {
+                case .banner:
+                    return nil
+                case .menu:
+                    return "menu"
+                }
+            }
+        }
+        
         public enum DonationSource {
             case campaign(id: String)
             case menu