refactor: use Nuxt 4 directory structure

app/composables/useWebSearch.ts

@@ -0,0 +1,72 @@
+import { tavily } from '@tavily/core'
+import Firecrawl from '@mendable/firecrawl-js'
+
+type WebSearchOptions = {
+  maxResults?: number
+  /** The search language, e.g. `en`. Only works for Firecrawl. */
+  lang?: string
+}
+
+export type WebSearchResult = {
+  content: string
+  url: string
+  title?: string
+}
+
+type WebSearchFunction = (
+  query: string,
+  options: WebSearchOptions,
+) => Promise<WebSearchResult[]>
+
+export const useWebSearch = (): WebSearchFunction => {
+  const { config, webSearchApiBase } = useConfigStore()
+
+  switch (config.webSearch.provider) {
+    case 'firecrawl': {
+      const fc = new Firecrawl({
+        apiKey: config.webSearch.apiKey,
+        apiUrl: webSearchApiBase,
+      })
+      return async (q: string, o: WebSearchOptions) => {
+        const results = await fc.search(q, {
+          ...o,
+          scrapeOptions: {
+            formats: ['markdown']
+          }
+        })
+        if (results.error) {
+          throw new Error(results.error)
+        }
+        return results.data
+          .filter((x) => !!x?.markdown && !!x.url)
+          .map((r) => ({
+            content: r.markdown!,
+            url: r.url!,
+            title: r.title,
+          }))
+      }
+    }
+    case 'tavily':
+    default: {
+      const tvly = tavily({
+        apiKey: config.webSearch.apiKey,
+      })
+      return async (q: string, o: WebSearchOptions) => {
+        const results = await tvly.search(q, {
+          ...o,
+          searchDepth: config.webSearch.tavilyAdvancedSearch
+            ? 'advanced'
+            : 'basic',
+          topic: config.webSearch.tavilySearchTopic,
+        })
+        return results.results
+          .filter((x) => !!x?.content && !!x.url)
+          .map((r) => ({
+            content: r.content,
+            url: r.url,
+            title: r.title,
+          }))
+      }
+    }
+  }
+}