Precise custom model selection & simplify language model/provider log… (#147)

…ic (no merging)

src/components/ModelPicker.tsx

@@ -84,6 +84,13 @@ export function ModelPicker() {
 
     // For cloud models, look up in the modelsByProviders data
     if (modelsByProviders && modelsByProviders[selectedModel.provider]) {
+      const customFoundModel = modelsByProviders[selectedModel.provider].find(
+        (model) =>
+          model.type === "custom" && model.id === selectedModel.customModelId,
+      );
+      if (customFoundModel) {
+        return customFoundModel.displayName;
+      }
       const foundModel = modelsByProviders[selectedModel.provider].find(
         (model) => model.apiName === selectedModel.name,
       );
@@ -227,9 +234,12 @@ export function ModelPicker() {
                                 : ""
                             }
                             onClick={() => {
+                              const customModelId =
+                                model.type === "custom" ? model.id : undefined;
                               onModelSelect({
                                 name: model.apiName,
                                 provider: providerId,
+                                customModelId,
                               });
                               setOpen(false);
                             }}

src/ipc/shared/language_model_helpers.ts

@@ -191,35 +191,7 @@ export async function getLanguageModelProviders(): Promise<
     }
   }
 
-  // Merge lists: custom providers take precedence
-  const mergedProvidersMap = new Map<string, LanguageModelProvider>();
-
-  // Add all hardcoded providers first
-  for (const hp of hardcodedProviders) {
-    mergedProvidersMap.set(hp.id, hp);
-  }
-
-  // Add/overwrite with custom providers from DB
-  for (const [id, cp] of customProvidersMap) {
-    const existingProvider = mergedProvidersMap.get(id);
-    if (existingProvider) {
-      // If exists, merge. Custom fields take precedence.
-      mergedProvidersMap.set(id, {
-        ...existingProvider, // start with hardcoded
-        ...cp, // override with custom where defined
-        id: cp.id, // ensure custom id is used
-        name: cp.name, // ensure custom name is used
-        type: "custom", // explicitly set type to custom
-        apiBaseUrl: cp.apiBaseUrl ?? existingProvider.apiBaseUrl,
-        envVarName: cp.envVarName ?? existingProvider.envVarName,
-      });
-    } else {
-      // If it doesn't exist in hardcoded, just add the custom one
-      mergedProvidersMap.set(id, cp);
-    }
-  }
-
-  return Array.from(mergedProvidersMap.values());
+  return [...hardcodedProviders, ...customProvidersMap.values()];
 }
 
 /**
@@ -293,20 +265,7 @@ export async function getLanguageModels({
     }
   }
 
-  // Merge the models, with custom models taking precedence over hardcoded ones
-  const mergedModelsMap = new Map<string, LanguageModel>();
-
-  // Add hardcoded models first
-  for (const model of hardcodedModels) {
-    mergedModelsMap.set(model.apiName, model);
-  }
-
-  // Then override with custom models
-  for (const model of customModels) {
-    mergedModelsMap.set(model.apiName, model);
-  }
-
-  return Array.from(mergedModelsMap.values());
+  return [...hardcodedModels, ...customModels];
 }
 
 /**

src/ipc/utils/token_utils.ts

@@ -20,13 +20,7 @@ const DEFAULT_CONTEXT_WINDOW = 128_000;
 
 export async function getContextWindow() {
   const settings = readSettings();
-  const model = settings.selectedModel;
-
-  const models = await getLanguageModels({
-    providerId: model.provider,
-  });
-
-  const modelOption = models.find((m) => m.apiName === model.name);
+  const modelOption = await findLanguageModel(settings.selectedModel);
   return modelOption?.contextWindow || DEFAULT_CONTEXT_WINDOW;
 }
 
@@ -34,10 +28,23 @@ export async function getContextWindow() {
 const DEFAULT_MAX_TOKENS = 8_000;
 
 export async function getMaxTokens(model: LargeLanguageModel) {
+  const modelOption = await findLanguageModel(model);
+  return modelOption?.maxOutputTokens || DEFAULT_MAX_TOKENS;
+}
+
+async function findLanguageModel(model: LargeLanguageModel) {
   const models = await getLanguageModels({
     providerId: model.provider,
   });
 
-  const modelOption = models.find((m) => m.apiName === model.name);
-  return modelOption?.maxOutputTokens || DEFAULT_MAX_TOKENS;
+  if (model.customModelId) {
+    const customModel = models.find(
+      (m) => m.type === "custom" && m.id === model.customModelId,
+    );
+    if (customModel) {
+      return customModel;
+    }
+  }
+
+  return models.find((m) => m.apiName === model.name);
 }

src/lib/schemas.ts

@@ -46,6 +46,7 @@ export const cloudProviders = providers.filter(
 export const LargeLanguageModelSchema = z.object({
   name: z.string(),
   provider: z.string(),
+  customModelId: z.number().optional(),
 });
 
 /**