apatronl

@MainActor
struct ChatView: View {

    @Bindable private var viewModel: ChatViewModel = ChatViewModel()

    var body: some View {
        NavigationStack {
            VStack {
                ChatMessagesList(viewModel: viewModel)

apatronl

SendMessageButton {
    Task {
        await viewModel.sendMessage()
    }
}
.disabled(!viewModel.canSendMessage)

apatronl

struct ChatMessagesList: View {

    @Bindable var viewModel: ChatViewModel
    @State private var loadingViewId: UUID? = UUID()

    var body: some View {
        ScrollView {
            ForEach(viewModel.messages) { message in
                MessageCell(message: message)
                    .padding(message.role.padding)

apatronl

import SwiftUI

struct ErrorView: View {
    var body: some View {
        Text("Something went wrong, please try sending your message again.")
            .foregroundStyle(Color.red)
    }
}

apatronl

import SwiftUI

struct LoadingView: View {

    var body: some View {
        Image(systemName: "ellipsis.rectangle.fill")
            .symbolRenderingMode(.hierarchical)
            .foregroundStyle(Color.gray)
            .font(.largeTitle)
            .symbolEffect(.variableColor, options: .repeating, isActive: true)

apatronl

@MainActor
@Observable
class ChatViewModel {

    // Private
    private let client: GeminiClient = GeminiClient()

    // Public
    var error: Error?
    var waitingForResponse: Bool = false

apatronl

@MainActor
@Observable
class ChatViewModel {

    // Private
    private let client: GeminiClient = GeminiClient()

    // Public
    var error: Error?
    var waitingForResponse: Bool = false

apatronl

import Foundation
import GoogleGenerativeAI

class GeminiClient {

    private lazy var model = GenerativeModel(name: "gemini-pro", apiKey: APIKey.default)
    private lazy var chat: Chat = model.startChat()

    func send(message: String) async -> Result<String, GenerateContentError> {
        do {

apatronl

class GeminiClient {
  enum APIKey {

        // Fetch the API key from `GeminiChat.plist`
        static var `default`: String {
            guard let filePath = Bundle.main.path(forResource: "GeminiChat", ofType: "plist")
            else {
              fatalError("Couldn't find file 'GeminiChat.plist'.")
            }
            let plist = NSDictionary(contentsOfFile: filePath)

apatronl

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
	<key>API_KEY</key>
	<string>123456789</string>
</dict>
</plist>