feat(profile): scaffold SetMinDmChatInitFee

FlipcashAPI/Package.swift

@@ -35,7 +35,7 @@ let contractDependencies: [Package.Dependency] = protoLocalRoot.map { root in
     ]
 } ?? [
     .package(url: "https://github.com/code-payments/ocp-client-protocol", exact: "0.2.0"),
-    .package(url: "https://github.com/code-payments/flipcash2-client-protocol", exact: "0.1.0"),
+    .package(url: "https://github.com/code-payments/flipcash2-client-protocol", exact: "0.2.0"),
 ]
 
 let package = Package(

FlipcashCore/Sources/FlipcashCore/Clients/Flip API/FlipClient+Profile.swift

@@ -51,4 +51,10 @@ extension FlipClient {
     public func updateTipCard(_ customization: TipCardCustomization, owner: KeyPair) async throws {
         try await profileService.updateTipCard(color: customization.colorProto, owner: owner)
     }
+
+    /// Sets the minimum fee another user must pay to initialize a DM chat with
+    /// the caller, replacing any fee already set.
+    public func setMinDmChatInitFee(_ fee: FiatAmount, owner: KeyPair) async throws {
+        try await profileService.setMinDmChatInitFee(fee, owner: owner)
+    }
 }

FlipcashCore/Sources/FlipcashCore/Clients/Flip API/Services/ProfileService.swift

@@ -179,6 +179,35 @@ final class ProfileService: Sendable {
             throw ErrorUpdateTipCard.unknown
         }
     }
+
+    /// Sets the minimum fee another user must pay to initialize a DM chat with
+    /// the caller, replacing any fee already set.
+    func setMinDmChatInitFee(_ fee: FiatAmount, owner: KeyPair) async throws {
+        logger.info("Setting minimum DM chat init fee")
+
+        var request = Flipcash_Profile_V1_SetMinDmChatInitFeeRequest()
+        request.minDmChatInitFee = .with {
+            $0.currency     = fee.currency.rawValue
+            $0.nativeAmount = fee.doubleValue
+        }
+        request.auth = owner.authFor(message: request)
+
+        do {
+            let response = try await service.setMinDmChatInitFee(request, options: .unaryDefault)
+            let error = ErrorSetMinDmChatInitFee(rawValue: response.result.rawValue) ?? .unknown
+            guard error == .ok else {
+                logger.error("Failed to set minimum DM chat init fee", metadata: ["error": "\(error)"])
+                throw error
+            }
+            logger.info("Minimum DM chat init fee set")
+        } catch let error as ErrorSetMinDmChatInitFee {
+            throw error
+        } catch let error as RPCError {
+            throw ErrorSetMinDmChatInitFee.from(transportError: error)
+        } catch {
+            throw ErrorSetMinDmChatInitFee.unknown
+        }
+    }
 }
 
 // MARK: - Errors -
@@ -225,6 +254,28 @@ extension ErrorUpdateTipCard: ServerError, TransportClassifiableError {
     }
 }
 
+public enum ErrorSetMinDmChatInitFee: Int, Error {
+    case ok
+    case denied
+    /// e.g. unsupported currency, or amount outside the allowed range.
+    case invalidAmount
+    case unknown = -1
+    case transportFailure = -2
+    case cancelled = -3
+    case rejected = -4
+}
+
+extension ErrorSetMinDmChatInitFee: ServerError, TransportClassifiableError {
+    public var reportingLevel: ErrorReportingLevel {
+        switch self {
+        case .ok, .transportFailure: .suppressed
+        case .cancelled: .info
+        case .denied, .invalidAmount: .info
+        case .unknown, .rejected: .error
+        }
+    }
+}
+
 public enum ErrorProfile: Error, Sendable {
     case denied
     case invalidDisplayName

FlipcashCore/Sources/FlipcashCore/Models/Profile.swift

@@ -39,6 +39,11 @@ public struct Profile: Codable, Equatable, Sendable {
     /// Public — the server returns it for any user, not just the caller.
     public let username: Username?
 
+    /// The minimum fee another user must pay to initialize a DM chat with this
+    /// user. Public — returned for any user, not just the caller. `nil` when
+    /// the user hasn't set one, in which case the server default applies.
+    public let minDmChatInitFee: FiatAmount?
+
     public var isPhoneVerified: Bool {
         phone != nil
     }
@@ -56,7 +61,7 @@ public struct Profile: Codable, Equatable, Sendable {
         phone != nil && phone?.e164 != previous?.phone?.e164
     }
 
-    public init(displayName: String?, phone: String?, email: String?, profilePicture: ProfilePicture? = nil, joinedAt: Date? = nil, tipCardCustomization: TipCardCustomization? = nil, userID: UserID? = nil, username: Username? = nil) throws {
+    public init(displayName: String?, phone: String?, email: String?, profilePicture: ProfilePicture? = nil, joinedAt: Date? = nil, tipCardCustomization: TipCardCustomization? = nil, userID: UserID? = nil, username: Username? = nil, minDmChatInitFee: FiatAmount? = nil) throws {
 
         // Only parse phone if it's not empty
         var parsedPhone: Phone?
@@ -80,11 +85,12 @@ public struct Profile: Codable, Equatable, Sendable {
             joinedAt: joinedAt,
             tipCardCustomization: tipCardCustomization,
             userID: userID,
-            username: username
+            username: username,
+            minDmChatInitFee: minDmChatInitFee
         )
     }
 
-    public init(displayName: String?, phone: Phone?, email: String?, profilePicture: ProfilePicture? = nil, joinedAt: Date? = nil, tipCardCustomization: TipCardCustomization? = nil, userID: UserID? = nil, username: Username? = nil) {
+    public init(displayName: String?, phone: Phone?, email: String?, profilePicture: ProfilePicture? = nil, joinedAt: Date? = nil, tipCardCustomization: TipCardCustomization? = nil, userID: UserID? = nil, username: Username? = nil, minDmChatInitFee: FiatAmount? = nil) {
         self.displayName = displayName
         self.phone = phone
         self.email = email
@@ -93,6 +99,7 @@ public struct Profile: Codable, Equatable, Sendable {
         self.tipCardCustomization = tipCardCustomization
         self.userID = userID
         self.username = username
+        self.minDmChatInitFee = minDmChatInitFee
     }
 }
 
@@ -126,7 +133,11 @@ extension Profile {
             joinedAt: proto.hasJoinTs ? proto.joinTs.date : nil,
             tipCardCustomization: proto.hasTipCardCustomization ? TipCardCustomization(proto.tipCardCustomization) : nil,
             userID: proto.hasUserID ? try? UUID(data: proto.userID.value) : nil,
-            username: proto.hasUsername ? Username(proto.username) : nil
+            username: proto.hasUsername ? Username(proto.username) : nil,
+            minDmChatInitFee: proto.hasMinDmChatInitFee ? FiatAmount(
+                value: Decimal(proto.minDmChatInitFee.nativeAmount),
+                currency: try CurrencyCode(currencyCode: proto.minDmChatInitFee.currency)
+            ) : nil
         )
     }
 }

FlipcashCore/Tests/FlipcashCoreTests/TransportClassificationTests.swift

@@ -57,6 +57,7 @@ struct TransportClassificationTests {
     @Test func errorUnlinkEmail() { assertClassifies(ErrorUnlinkEmail.self) }
     @Test func errorFetchProfile() { assertClassifies(ErrorFetchProfile.self) }
     @Test func errorUpdateTipCard() { assertClassifies(ErrorUpdateTipCard.self) }
+    @Test func errorSetMinDmChatInitFee() { assertClassifies(ErrorSetMinDmChatInitFee.self) }
     @Test func errorBlocklist() { assertClassifies(ErrorBlocklist.self) }
     @Test func errorRateHistory() { assertClassifies(ErrorRateHistory.self) }
     @Test func errorGetSwap() { assertClassifies(ErrorGetSwap.self) }