Configurable thinking budget (default to medium) (#494)

src/components/ThinkingBudgetSelector.tsx

@@ -0,0 +1,80 @@
+import React from "react";
+import { useSettings } from "@/hooks/useSettings";
+import {
+  Select,
+  SelectContent,
+  SelectItem,
+  SelectTrigger,
+  SelectValue,
+} from "@/components/ui/select";
+
+interface OptionInfo {
+  value: string;
+  label: string;
+  description: string;
+}
+
+const defaultValue = "medium";
+
+const options: OptionInfo[] = [
+  {
+    value: "low",
+    label: "Low",
+    description:
+      "Minimal thinking tokens for faster responses and lower costs.",
+  },
+  {
+    value: defaultValue,
+    label: "Medium (default)",
+    description: "Balanced thinking for most conversations.",
+  },
+  {
+    value: "high",
+    label: "High",
+    description:
+      "Extended thinking for complex problems requiring deep analysis.",
+  },
+];
+
+export const ThinkingBudgetSelector: React.FC = () => {
+  const { settings, updateSettings } = useSettings();
+
+  const handleValueChange = (value: string) => {
+    updateSettings({ thinkingBudget: value as "low" | "medium" | "high" });
+  };
+
+  // Determine the current value
+  const currentValue = settings?.thinkingBudget || defaultValue;
+
+  // Find the current option to display its description
+  const currentOption =
+    options.find((opt) => opt.value === currentValue) || options[1];
+
+  return (
+    <div className="space-y-1">
+      <div className="flex items-center gap-4">
+        <label
+          htmlFor="thinking-budget"
+          className="text-sm font-medium text-gray-700 dark:text-gray-300"
+        >
+          Thinking Budget
+        </label>
+        <Select value={currentValue} onValueChange={handleValueChange}>
+          <SelectTrigger className="w-[180px]" id="thinking-budget">
+            <SelectValue placeholder="Select budget" />
+          </SelectTrigger>
+          <SelectContent>
+            {options.map((option) => (
+              <SelectItem key={option.value} value={option.value}>
+                {option.label}
+              </SelectItem>
+            ))}
+          </SelectContent>
+        </Select>
+      </div>
+      <div className="text-sm text-gray-500 dark:text-gray-400">
+        {currentOption.description}
+      </div>
+    </div>
+  );
+};