refactor(commands): share default model applier

src/commands/model-default.ts

@@ -0,0 +1,45 @@
+import type { OpenClawConfig } from "../config/config.js";
+import type { AgentModelListConfig } from "../config/types.js";
+
+export function resolvePrimaryModel(model?: AgentModelListConfig | string): string | undefined {
+  if (typeof model === "string") {
+    return model;
+  }
+  if (model && typeof model === "object" && typeof model.primary === "string") {
+    return model.primary;
+  }
+  return undefined;
+}
+
+export function applyAgentDefaultPrimaryModel(params: {
+  cfg: OpenClawConfig;
+  model: string;
+  legacyModels?: Set<string>;
+}): { next: OpenClawConfig; changed: boolean } {
+  const current = resolvePrimaryModel(params.cfg.agents?.defaults?.model)?.trim();
+  const normalizedCurrent = current && params.legacyModels?.has(current) ? params.model : current;
+  if (normalizedCurrent === params.model) {
+    return { next: params.cfg, changed: false };
+  }
+
+  return {
+    next: {
+      ...params.cfg,
+      agents: {
+        ...params.cfg.agents,
+        defaults: {
+          ...params.cfg.agents?.defaults,
+          model:
+            params.cfg.agents?.defaults?.model &&
+            typeof params.cfg.agents.defaults.model === "object"
+              ? {
+                  ...params.cfg.agents.defaults.model,
+                  primary: params.model,
+                }
+              : { primary: params.model },
+        },
+      },
+    },
+    changed: true,
+  };
+}