fix: openai add checking about fast model

for OpenAI compatible might does't support gpt-4o-mini

Signed-off-by: Shawn Wang <shawn111@gmail.com>

Author: shawn111

crates/goose/src/providers/openai.rs

@@ -60,13 +60,12 @@ impl_provider_default!(OpenAiProvider);
 
 impl OpenAiProvider {
     pub fn from_env(model: ModelConfig) -> Result<Self> {
-        let model = model.with_fast(OPEN_AI_DEFAULT_FAST_MODEL.to_string());
-
         let config = crate::config::Config::global();
         let api_key: String = config.get_secret("OPENAI_API_KEY")?;
         let host: String = config
             .get_param("OPENAI_HOST")
             .unwrap_or_else(|_| "https://api.openai.com".to_string());
+
         let base_path: String = config
             .get_param("OPENAI_BASE_PATH")
             .unwrap_or_else(|_| "v1/chat/completions".to_string());
@@ -80,8 +79,11 @@ impl OpenAiProvider {
         let timeout_secs: u64 = config.get_param("OPENAI_TIMEOUT").unwrap_or(600);
 
         let auth = AuthMethod::BearerToken(api_key);
-        let mut api_client =
-            ApiClient::with_timeout(host, auth, std::time::Duration::from_secs(timeout_secs))?;
+        let mut api_client = ApiClient::with_timeout(
+            host.clone(),
+            auth,
+            std::time::Duration::from_secs(timeout_secs),
+        )?;
 
         if let Some(org) = &organization {
             api_client = api_client.with_header("OpenAI-Organization", org)?;
@@ -101,15 +103,44 @@ impl OpenAiProvider {
             api_client = api_client.with_headers(header_map)?;
         }
 
-        Ok(Self {
+        let mut provider = Self {
             api_client,
             base_path,
             organization,
             project,
-            model,
+            model: model.clone(),
             custom_headers,
             supports_streaming: true,
-        })
+        };
+
+        let model_with_fast = tokio::task::block_in_place(|| {
+            tokio::runtime::Handle::current().block_on(async {
+                if let Ok(Some(models)) = provider.fetch_supported_models().await {
+                    if models.contains(&OPEN_AI_DEFAULT_FAST_MODEL.to_string()) {
+                        tracing::debug!(
+                            "Found {} in OpenAI workspace, setting as fast model",
+                            OPEN_AI_DEFAULT_FAST_MODEL
+                        );
+                        provider
+                            .model
+                            .clone()
+                            .with_fast(OPEN_AI_DEFAULT_FAST_MODEL.to_string())
+                    } else {
+                        tracing::debug!(
+                            "{} not found in OpenAI workspace, not setting fast model",
+                            OPEN_AI_DEFAULT_FAST_MODEL
+                        );
+                        provider.model.clone()
+                    }
+                } else {
+                    tracing::debug!("Could not fetch OpenAI models, not setting fast model");
+                    provider.model.clone()
+                }
+            })
+        });
+
+        provider.model = model_with_fast;
+        Ok(provider)
     }
 
     pub fn from_custom_config(model: ModelConfig, config: CustomProviderConfig) -> Result<Self> {