feat: close #3187 use CUSTOM_MODELS to control model list

app/utils/model.ts

@@ -0,0 +1,40 @@
+import { LLMModel } from "../client/api";
+
+export function collectModelTable(
+  models: readonly LLMModel[],
+  customModels: string,
+) {
+  const modelTable: Record<string, boolean> = {};
+
+  // default models
+  models.forEach((m) => (modelTable[m.name] = m.available));
+
+  // server custom models
+  customModels
+    .split(",")
+    .filter((v) => !!v && v.length > 0)
+    .map((m) => {
+      if (m.startsWith("+")) {
+        modelTable[m.slice(1)] = true;
+      } else if (m.startsWith("-")) {
+        modelTable[m.slice(1)] = false;
+      } else modelTable[m] = true;
+    });
+  return modelTable;
+}
+
+/**
+ * Generate full model table.
+ */
+export function collectModels(
+  models: readonly LLMModel[],
+  customModels: string,
+) {
+  const modelTable = collectModelTable(models, customModels);
+  const allModels = Object.keys(modelTable).map((m) => ({
+    name: m,
+    available: modelTable[m],
+  }));
+
+  return allModels;
+}