[AI] Reduce minimum deployment target

FirebaseAI.podspec

@@ -19,9 +19,9 @@ Build AI-powered apps and features with the Gemini API using the Firebase AI SDK
   s.social_media_url = 'https://twitter.com/Firebase'
 
   ios_deployment_target = '15.0'
-  osx_deployment_target = '12.0'
+  osx_deployment_target = '10.15'
   tvos_deployment_target = '15.0'
-  watchos_deployment_target = '8.0'
+  watchos_deployment_target = '7.0'
 
   s.ios.deployment_target = ios_deployment_target
   s.osx.deployment_target = osx_deployment_target

FirebaseAI/Sources/AILog.swift

@@ -139,7 +139,6 @@ enum AILog {
     log(level: .debug, code: code, message)
   }
 
-  @available(iOS 15.0, macOS 12.0, macCatalyst 15.0, tvOS 15.0, watchOS 8.0, *)
   static func makeInternalError(message: String, code: MessageCode) -> GenerateContentError {
     let error = GenerateContentError.internalError(underlying: NSError(
       domain: "\(Constants.baseErrorDomain).Internal",

FirebaseAI/Sources/Chat.swift

@@ -16,7 +16,6 @@ import Foundation
 
 /// An object that represents a back-and-forth chat with a model, capturing the history and saving
 /// the context in memory between each message sent.
-@available(iOS 15.0, macOS 12.0, macCatalyst 15.0, tvOS 15.0, watchOS 8.0, *)
 public final class Chat: Sendable {
   private let model: GenerativeModel
   private let _history: History
@@ -62,7 +61,7 @@ public final class Chat: Sendable {
   /// and response will be added to the history. If unsuccessful, history will remain unchanged.
   /// - Parameter parts: The new content to send as a single chat message.
   /// - Returns: A stream containing the model's response or an error if an error occurred.
-  @available(macOS 12.0, *)
+  @available(macOS 12.0, watchOS 8.0, *)
   public func sendMessageStream(_ parts: any PartsRepresentable...) throws
     -> AsyncThrowingStream<GenerateContentResponse, Error> {
     return try sendMessageStream([ModelContent(parts: parts)])
@@ -72,7 +71,7 @@ public final class Chat: Sendable {
   /// and response will be added to the history. If unsuccessful, history will remain unchanged.
   /// - Parameter content: The new content to send as a single chat message.
   /// - Returns: A stream containing the model's response or an error if an error occurred.
-  @available(macOS 12.0, *)
+  @available(macOS 12.0, watchOS 8.0, *)
   public func sendMessageStream(_ content: [ModelContent]) throws
     -> AsyncThrowingStream<GenerateContentResponse, Error> {
     return try sendMessageStream(content, generationConfig: generationConfig)
@@ -106,6 +105,7 @@ public final class Chat: Sendable {
     return result
   }
 
+  @available(macOS 12.0, watchOS 8.0, *)
   func sendMessageStream(_ content: [ModelContent], generationConfig: GenerationConfig?) throws
     -> AsyncThrowingStream<GenerateContentResponse, Error> {
     // Ensure that the new content has the role set.

FirebaseAI/Sources/Extensions/Internal/GenerationSchema+Gemini.swift

@@ -14,7 +14,6 @@
 
 import Foundation
 
-@available(iOS 15.0, macOS 12.0, macCatalyst 15.0, tvOS 15.0, watchOS 8.0, *)
 extension FirebaseAI.GenerationSchema {
   /// Returns a Gemini-compatible JSON Schema of this `GenerationSchema`.
   func toGeminiJSONSchema() throws -> JSONObject {

FirebaseAI/Sources/FirebaseAI.swift

@@ -21,7 +21,6 @@ import Foundation
 internal import FirebaseCoreExtension
 
 /// The Firebase AI SDK provides access to Gemini models directly from your app.
-@available(iOS 15.0, macOS 12.0, macCatalyst 15.0, tvOS 15.0, watchOS 8.0, *)
 public final class FirebaseAI: Sendable {
   // MARK: - Public APIs
 
@@ -197,7 +196,6 @@ public final class FirebaseAI: Sendable {
   ///   - systemInstruction: Instructions that direct the model to behave a certain way; currently
   ///     only text content is supported.
   ///   - requestOptions: Configuration parameters for sending requests to the backend.
-  @available(iOS 15.0, macOS 12.0, macCatalyst 15.0, tvOS 15.0, *)
   @available(watchOS, unavailable)
   public func liveModel(modelName: String,
                         generationConfig: LiveGenerationConfig? = nil,

FirebaseAI/Sources/FirebaseInfo.swift

@@ -20,7 +20,6 @@ import Foundation
 @preconcurrency import FirebaseCore
 
 /// Firebase data used by FirebaseAI
-@available(iOS 15.0, macOS 12.0, macCatalyst 15.0, tvOS 15.0, watchOS 8.0, *)
 struct FirebaseInfo: Sendable {
   let appCheck: AppCheckInterop?
   let auth: AuthInterop?

FirebaseAI/Sources/GenerateContentError.swift

@@ -15,7 +15,6 @@
 import Foundation
 
 /// Errors that occur when generating content from a model.
-@available(iOS 15.0, macOS 12.0, macCatalyst 15.0, tvOS 15.0, watchOS 8.0, *)
 public enum GenerateContentError: Error {
   /// An internal error occurred. See the underlying error for more context.
   case internalError(underlying: Error)

FirebaseAI/Sources/GenerateContentRequest.swift

@@ -14,7 +14,6 @@
 
 import Foundation
 
-@available(iOS 15.0, macOS 12.0, macCatalyst 15.0, tvOS 15.0, watchOS 8.0, *)
 struct GenerateContentRequest: Sendable {
   /// Model name.
   let model: String
@@ -31,7 +30,6 @@ struct GenerateContentRequest: Sendable {
   let options: RequestOptions
 }
 
-@available(iOS 15.0, macOS 12.0, macCatalyst 15.0, tvOS 15.0, watchOS 8.0, *)
 extension GenerateContentRequest: Encodable {
   enum CodingKeys: String, CodingKey {
     case model
@@ -60,7 +58,6 @@ extension GenerateContentRequest: Encodable {
   }
 }
 
-@available(iOS 15.0, macOS 12.0, macCatalyst 15.0, tvOS 15.0, watchOS 8.0, *)
 extension GenerateContentRequest {
   enum APIMethod: String {
     case generateContent
@@ -69,7 +66,6 @@ extension GenerateContentRequest {
   }
 }
 
-@available(iOS 15.0, macOS 12.0, macCatalyst 15.0, tvOS 15.0, watchOS 8.0, *)
 extension GenerateContentRequest: GenerativeAIRequest {
   typealias Response = GenerateContentResponse
 

FirebaseAI/Sources/GenerateContentResponse.swift

@@ -15,10 +15,8 @@
 import Foundation
 
 /// The model's response to a generate content request.
-@available(iOS 15.0, macOS 12.0, macCatalyst 15.0, tvOS 15.0, watchOS 8.0, *)
 public struct GenerateContentResponse: Sendable {
   /// Token usage metadata for processing the generate content request.
-  @available(iOS 15.0, macOS 12.0, macCatalyst 15.0, tvOS 15.0, watchOS 8.0, *)
   public struct UsageMetadata: Sendable {
     /// The number of tokens in the request prompt.
     public let promptTokenCount: Int
@@ -155,7 +153,6 @@ public struct GenerateContentResponse: Sendable {
 
 /// A struct representing a possible reply to a content generation prompt. Each content generation
 /// prompt may produce multiple candidate responses.
-@available(iOS 15.0, macOS 12.0, macCatalyst 15.0, tvOS 15.0, watchOS 8.0, *)
 public struct Candidate: Sendable {
   /// The response's content.
   public let content: ModelContent
@@ -196,14 +193,12 @@ public struct Candidate: Sendable {
 }
 
 /// A collection of source attributions for a piece of content.
-@available(iOS 15.0, macOS 12.0, macCatalyst 15.0, tvOS 15.0, watchOS 8.0, *)
 public struct CitationMetadata: Sendable {
   /// A list of individual cited sources and the parts of the content to which they apply.
   public let citations: [Citation]
 }
 
 /// A struct describing a source attribution.
-@available(iOS 15.0, macOS 12.0, macCatalyst 15.0, tvOS 15.0, watchOS 8.0, *)
 public struct Citation: Sendable, Equatable {
   /// The inclusive beginning of a sequence in a model response that derives from a cited source.
   public let startIndex: Int
@@ -241,7 +236,6 @@ public struct Citation: Sendable, Equatable {
 }
 
 /// A value enumerating possible reasons for a model to terminate a content generation request.
-@available(iOS 15.0, macOS 12.0, macCatalyst 15.0, tvOS 15.0, watchOS 8.0, *)
 public struct FinishReason: DecodableProtoEnum, Hashable, Sendable {
   enum Kind: String {
     case stop = "STOP"
@@ -296,10 +290,8 @@ public struct FinishReason: DecodableProtoEnum, Hashable, Sendable {
 }
 
 /// A metadata struct containing any feedback the model had on the prompt it was provided.
-@available(iOS 15.0, macOS 12.0, macCatalyst 15.0, tvOS 15.0, watchOS 8.0, *)
 public struct PromptFeedback: Sendable {
   /// A type describing possible reasons to block a prompt.
-  @available(iOS 15.0, macOS 12.0, macCatalyst 15.0, tvOS 15.0, watchOS 8.0, *)
   public struct BlockReason: DecodableProtoEnum, Hashable, Sendable {
     enum Kind: String {
       case safety = "SAFETY"
@@ -355,7 +347,6 @@ public struct PromptFeedback: Sendable {
 /// [Gemini Developer API](https://ai.google.dev/gemini-api/terms#grounding-with-google-search)
 /// or Vertex AI Gemini API (see [Service Terms](https://cloud.google.com/terms/service-terms)
 /// section within the Service Specific Terms).
-@available(iOS 15.0, macOS 12.0, macCatalyst 15.0, tvOS 15.0, watchOS 8.0, *)
 public struct GroundingMetadata: Sendable, Equatable, Hashable {
   /// A list of web search queries that the model performed to gather the grounding information.
   /// These can be used to allow users to explore the search results themselves.
@@ -372,7 +363,6 @@ public struct GroundingMetadata: Sendable, Equatable, Hashable {
   public let searchEntryPoint: SearchEntryPoint?
 
   /// A struct representing the Google Search entry point.
-  @available(iOS 15.0, macOS 12.0, macCatalyst 15.0, tvOS 15.0, watchOS 8.0, *)
   public struct SearchEntryPoint: Sendable, Equatable, Hashable {
     /// An HTML/CSS snippet that can be embedded in your app.
     ///
@@ -382,14 +372,12 @@ public struct GroundingMetadata: Sendable, Equatable, Hashable {
 
   /// Represents a chunk of retrieved data that supports a claim in the model's response. This is
   /// part of the grounding information provided when grounding is enabled.
-  @available(iOS 15.0, macOS 12.0, macCatalyst 15.0, tvOS 15.0, watchOS 8.0, *)
   public struct GroundingChunk: Sendable, Equatable, Hashable {
     /// Contains details if the grounding chunk is from a web source.
     public let web: WebGroundingChunk?
   }
 
   /// A grounding chunk sourced from the web.
-  @available(iOS 15.0, macOS 12.0, macCatalyst 15.0, tvOS 15.0, watchOS 8.0, *)
   public struct WebGroundingChunk: Sendable, Equatable, Hashable {
     /// The URI of the retrieved web page.
     public let uri: String?
@@ -403,7 +391,6 @@ public struct GroundingMetadata: Sendable, Equatable, Hashable {
 
   /// Provides information about how a specific segment of the model's response is supported by the
   /// retrieved grounding chunks.
-  @available(iOS 15.0, macOS 12.0, macCatalyst 15.0, tvOS 15.0, watchOS 8.0, *)
   public struct GroundingSupport: Sendable, Equatable, Hashable {
     /// Specifies the segment of the model's response content that this grounding support pertains
     /// to.
@@ -436,7 +423,6 @@ public struct GroundingMetadata: Sendable, Equatable, Hashable {
 
 /// Represents a specific segment within a ``ModelContent`` struct, often used to pinpoint the
 /// exact location of text or data that grounding information refers to.
-@available(iOS 15.0, macOS 12.0, macCatalyst 15.0, tvOS 15.0, watchOS 8.0, *)
 public struct Segment: Sendable, Equatable, Hashable {
   /// The zero-based index of the ``Part`` object within the `parts` array of its parent
   /// ``ModelContent`` object. This identifies which part of the content the segment belongs to.
@@ -454,7 +440,6 @@ public struct Segment: Sendable, Equatable, Hashable {
 
 // MARK: - Codable Conformances
 
-@available(iOS 15.0, macOS 12.0, macCatalyst 15.0, tvOS 15.0, watchOS 8.0, *)
 extension GenerateContentResponse: Decodable {
   enum CodingKeys: String, CodingKey {
     case candidates
@@ -490,7 +475,6 @@ extension GenerateContentResponse: Decodable {
   }
 }
 
-@available(iOS 15.0, macOS 12.0, macCatalyst 15.0, tvOS 15.0, watchOS 8.0, *)
 extension GenerateContentResponse.UsageMetadata: Decodable {
   enum CodingKeys: CodingKey {
     case promptTokenCount
@@ -532,7 +516,6 @@ extension GenerateContentResponse.UsageMetadata: Decodable {
   }
 }
 
-@available(iOS 15.0, macOS 12.0, macCatalyst 15.0, tvOS 15.0, watchOS 8.0, *)
 extension Candidate: Decodable {
   enum CodingKeys: CodingKey {
     case content
@@ -593,7 +576,6 @@ extension Candidate: Decodable {
   }
 }
 
-@available(iOS 15.0, macOS 12.0, macCatalyst 15.0, tvOS 15.0, watchOS 8.0, *)
 extension CitationMetadata: Decodable {
   enum CodingKeys: CodingKey {
     case citations // Vertex AI
@@ -612,7 +594,6 @@ extension CitationMetadata: Decodable {
   }
 }
 
-@available(iOS 15.0, macOS 12.0, macCatalyst 15.0, tvOS 15.0, watchOS 8.0, *)
 extension Citation: Decodable {
   enum CodingKeys: CodingKey {
     case startIndex
@@ -664,7 +645,6 @@ extension Citation: Decodable {
   }
 }
 
-@available(iOS 15.0, macOS 12.0, macCatalyst 15.0, tvOS 15.0, watchOS 8.0, *)
 extension PromptFeedback: Decodable {
   enum CodingKeys: CodingKey {
     case blockReason
@@ -690,7 +670,6 @@ extension PromptFeedback: Decodable {
   }
 }
 
-@available(iOS 15.0, macOS 12.0, macCatalyst 15.0, tvOS 15.0, watchOS 8.0, *)
 extension GroundingMetadata: Decodable {
   enum CodingKeys: String, CodingKey {
     case webSearchQueries
@@ -717,16 +696,12 @@ extension GroundingMetadata: Decodable {
   }
 }
 
-@available(iOS 15.0, macOS 12.0, macCatalyst 15.0, tvOS 15.0, watchOS 8.0, *)
 extension GroundingMetadata.SearchEntryPoint: Decodable {}
 
-@available(iOS 15.0, macOS 12.0, macCatalyst 15.0, tvOS 15.0, watchOS 8.0, *)
 extension GroundingMetadata.GroundingChunk: Decodable {}
 
-@available(iOS 15.0, macOS 12.0, macCatalyst 15.0, tvOS 15.0, watchOS 8.0, *)
 extension GroundingMetadata.WebGroundingChunk: Decodable {}
 
-@available(iOS 15.0, macOS 12.0, macCatalyst 15.0, tvOS 15.0, watchOS 8.0, *)
 extension GroundingMetadata.GroundingSupport.Internal: Decodable {
   enum CodingKeys: String, CodingKey {
     case segment
@@ -743,7 +718,6 @@ extension GroundingMetadata.GroundingSupport.Internal: Decodable {
   }
 }
 
-@available(iOS 15.0, macOS 12.0, macCatalyst 15.0, tvOS 15.0, watchOS 8.0, *)
 extension Segment: Decodable {
   enum CodingKeys: String, CodingKey {
     case partIndex

FirebaseAI/Sources/GenerationConfig.swift

@@ -16,7 +16,6 @@ import Foundation
 
 /// A struct defining model parameters to be used when sending generative AI
 /// requests to the backend model.
-@available(iOS 15.0, macOS 12.0, macCatalyst 15.0, tvOS 15.0, watchOS 8.0, *)
 public struct GenerationConfig: Sendable {
   /// Controls the degree of randomness in token selection.
   var temperature: Float?
@@ -255,7 +254,6 @@ public struct GenerationConfig: Sendable {
 
 // MARK: - Codable Conformances
 
-@available(iOS 15.0, macOS 12.0, macCatalyst 15.0, tvOS 15.0, watchOS 8.0, *)
 extension GenerationConfig: Encodable {
   enum CodingKeys: String, CodingKey {
     case temperature

FirebaseAI/Sources/GenerativeAIRequest.swift

@@ -14,7 +14,6 @@
 
 import Foundation
 
-@available(iOS 15.0, macOS 12.0, macCatalyst 15.0, tvOS 15.0, watchOS 8.0, *)
 protocol GenerativeAIRequest: Sendable, Encodable {
   associatedtype Response: Sendable, Decodable
 
@@ -24,7 +23,6 @@ protocol GenerativeAIRequest: Sendable, Encodable {
 }
 
 /// Configuration parameters for sending requests to the backend.
-@available(iOS 15.0, macOS 12.0, macCatalyst 15.0, tvOS 15.0, watchOS 8.0, *)
 public struct RequestOptions: Sendable {
   /// The request’s timeout interval in seconds; if not specified uses the default value for a
   /// `URLRequest`.
@@ -39,5 +37,4 @@ public struct RequestOptions: Sendable {
   }
 }
 
-@available(iOS 15.0, macOS 12.0, macCatalyst 15.0, tvOS 15.0, watchOS 8.0, *)
 extension RequestOptions: Equatable {}

FirebaseAI/Sources/GenerativeAIService.swift

@@ -18,7 +18,6 @@ import FirebaseCore
 import Foundation
 import os.log
 
-@available(iOS 15.0, macOS 12.0, macCatalyst 15.0, tvOS 15.0, watchOS 8.0, *)
 struct GenerativeAIService {
   /// The language of the SDK in the format `gl-<language>/<version>`.
   static let languageTag = "gl-swift/5"
@@ -39,7 +38,9 @@ struct GenerativeAIService {
     let urlRequest = try await urlRequest(request: request)
 
     #if DEBUG
-      printCURLCommand(from: urlRequest)
+      if #available(macOS 11.0, *) {
+        printCURLCommand(from: urlRequest)
+      }
     #endif
 
     let data: Data
@@ -67,7 +68,7 @@ struct GenerativeAIService {
     return try parseResponse(T.Response.self, from: data)
   }
 
-  @available(macOS 12.0, *)
+  @available(macOS 12.0, watchOS 8.0, *)
   func loadRequestStream<T: GenerativeAIRequest>(request: T)
     -> AsyncThrowingStream<T.Response, Error> where T: Sendable {
     return AsyncThrowingStream { continuation in
@@ -301,6 +302,7 @@ struct GenerativeAIService {
   }
 
   #if DEBUG
+    @available(macOS 11.0, *)
     private func cURLCommand(from request: URLRequest) -> String {
       var returnValue = "curl "
       if let allHeaders = request.allHTTPHeaderFields {
@@ -320,6 +322,7 @@ struct GenerativeAIService {
       return returnValue
     }
 
+    @available(macOS 11.0, *)
     private func printCURLCommand(from request: URLRequest) {
       guard AILog.additionalLoggingEnabled() else {
         return