feat: 初版

lib/ai/settings.ts

@@ -0,0 +1,41 @@
+import { DEFAULT_AI_SETTINGS, type AISettings } from "./types"
+
+const STORAGE_KEY = "devvault.ai-settings"
+
+export function loadAISettings(): AISettings {
+  if (typeof window === "undefined") return { ...DEFAULT_AI_SETTINGS }
+  try {
+    const raw = window.localStorage.getItem(STORAGE_KEY)
+    if (!raw) return { ...DEFAULT_AI_SETTINGS }
+    const parsed = JSON.parse(raw) as Partial<AISettings>
+    return { ...DEFAULT_AI_SETTINGS, ...parsed }
+  } catch {
+    return { ...DEFAULT_AI_SETTINGS }
+  }
+}
+
+export function saveAISettings(settings: AISettings): void {
+  if (typeof window === "undefined") return
+  window.localStorage.setItem(STORAGE_KEY, JSON.stringify(settings))
+}
+
+export function clearApiKey(): AISettings {
+  const current = loadAISettings()
+  const next = { ...current, apiKey: "" }
+  saveAISettings(next)
+  return next
+}
+
+export function resetAISettings(): AISettings {
+  const next = { ...DEFAULT_AI_SETTINGS }
+  saveAISettings(next)
+  return next
+}
+
+/** Returns an error message if the settings are not usable for a request, otherwise null. */
+export function validateForRequest(settings: AISettings): string | null {
+  if (!settings.baseUrl.trim()) return "请先在设置中填写 API Base URL"
+  if (!settings.model.trim()) return "请先在设置中填写 Model"
+  if (!settings.apiKey.trim()) return "请先在设置中填写 API Key"
+  return null
+}