mirror of
https://github.com/firebase/firebase-ios-sdk
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Andrew Heard
3796a55fdf
Implemented `GeminiLanguageModel`, providing an adapter for Google's Gemini models conforming to Apple's `FoundationModels.LanguageModel` protocol. This PR includes text to text generation capabilities; other modalities and Gemini features will be handled in follow-up PRs. **Note:** The `GeminiLanguageModel` implementation is guarded by the environment variable `GEMINI_LANGUAGE_MODEL`. By default none of the `GeminiLanguageModel` implementation is included. Key additions: - `GeminiLanguageModel`: Implements `LanguageModel` protocol with reasoning capabilities, configuring execution via `ModelResource` and `EndpointConfiguration`. - `GeminiLanguageModelExecutor`: Converts prompt instructions and history into Gemini streaming requests, yielding responses as `LanguageModelSession.ResponseStream`. - `GeminiTranscriptTranslator`: Translates Apple `Transcript` entries and segments into Gemini `Content` structures while preserving thought signatures and validating supported transcript features. - `GeminiLanguageModel.Error` and `GeminiErrorMapper`: Translates Gemini API, HTTP, and network errors into standard `LanguageModelError` cases (`rateLimited`, `timeout`, `guardrailViolation`, `refusal`, and `unsupportedLanguageOrLocale`) or `GeminiLanguageModel.Error` cases (`serviceUnavailable`, `networkFailure`, `modelNotFound`, `apiError`). The `APIError` payload is designed for seamless forward compatibility with both GenerateContent and the upcoming Interactions API. - Testing infrastructure: Adds `ConditionTrait.requireFoundationModels` to conditionally run Foundation Models tests only on supported platforms (macOS 27+, iOS 27+, watchOS 27+, visionOS 27+), along with shared test constants, mock fixtures, and comprehensive unit and integration test suites.
73 lines
1.8 KiB
Swift
73 lines
1.8 KiB
Swift
// Copyright 2026 Google LLC
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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import Foundation
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/// An internal data model for `Modality`.
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///
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/// ### Gemini Developer API
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///
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/// Type: `GoogleAiGenerativelanguageV1betaModality`
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///
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/// ### Gemini Enterprise Agent Platform
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///
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/// > Important: This type is not supported in the Gemini Enterprise Agent Platform.
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package enum Modality: Codable, Sendable, Equatable, Hashable {
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/// Plain text.
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case text
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/// Image.
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case image
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/// Video.
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case video
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/// Audio.
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case audio
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/// Document, e.g. PDF.
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case document
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/// Unrecognized case.
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///
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/// - Parameter value: The raw string value of the unrecognized enum case.
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case unrecognized(_ value: String)
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}
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// MARK: - RawRepresentable Conformance
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extension Modality: RawRepresentable {
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package var rawValue: String {
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switch self {
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case .text: "TEXT"
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case .image: "IMAGE"
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case .video: "VIDEO"
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case .audio: "AUDIO"
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case .document: "DOCUMENT"
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case .unrecognized(let value): value
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}
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}
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package init(rawValue: String) {
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switch rawValue {
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case "TEXT": self = .text
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case "IMAGE": self = .image
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case "VIDEO": self = .video
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case "AUDIO": self = .audio
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case "DOCUMENT": self = .document
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default: self = .unrecognized(rawValue)
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}
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}
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}
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