. clippy clean + resolver fn renaming

examples/c02-auth.rs

@@ -0,0 +1,50 @@
+use genai::adapter::{AdapterConfig, AdapterKind};
+use genai::chat::{ChatMessage, ChatRequest};
+use genai::client::Client;
+use genai::resolver::{AuthData, AuthResolver};
+use genai::utils::print_chat_stream;
+use genai::ConfigSet;
+
+const MODEL: &str = "gpt-3.5-turbo";
+
+#[tokio::main]
+async fn main() -> Result<(), Box<dyn std::error::Error>> {
+	let questions = &[
+		// follow-up questions
+		"Why is the sky blue?",
+		"Why is it red sometime?",
+	];
+
+	// -- Build a auth_resolver and the AdapterConfig
+	let auth_resolver = AuthResolver::from_sync_resolver(
+		|kind: AdapterKind, _config_set: &ConfigSet<'_>| -> Result<Option<AuthData>, genai::Error> {
+			println!("\n>> Custom auth provider for {kind} <<");
+			let key = std::env::var("OPENAI_API_KEY").map_err(|_| genai::Error::ApiKeyEnvNotFound {
+				env_name: "OPENAI_API_KEY".to_string(),
+			})?;
+			Ok(Some(AuthData::from_single(key)))
+		},
+	);
+	let adapter_config = AdapterConfig::default().with_auth_resolver(auth_resolver);
+
+	// -- Build the new client with this adapter_config
+	let client = Client::builder()
+		.with_adapter_config(AdapterKind::OpenAI, adapter_config)
+		.build();
+
+	let mut chat_req = ChatRequest::default().with_system("Answer in one sentence");
+
+	for &question in questions {
+		chat_req = chat_req.append_message(ChatMessage::user(question));
+
+		println!("\n--- Question:\n{question}");
+		let chat_res = client.exec_chat_stream(MODEL, chat_req.clone()).await?;
+
+		println!("\n--- Answer: (streaming)");
+		let assistant_answer = print_chat_stream(chat_res).await?;
+
+		chat_req = chat_req.append_message(ChatMessage::assistant(assistant_answer));
+	}
+
+	Ok(())
+}