Add SearchApi to search

Add support for engines, improve status code error

Remove changes in package, add engine to env params

Improve description in env example

Remove unnecessary empty line

Improve text

apps/api/src/search/searchapi.ts

@@ -0,0 +1,60 @@
+import axios from "axios";
+import dotenv from "dotenv";
+import { SearchResult } from "../../src/lib/entities";
+
+dotenv.config();
+
+interface SearchOptions {
+  tbs?: string;
+  filter?: string;
+  lang?: string;
+  country?: string;
+  location?: string;
+  num_results: number;
+  page?: number;
+}
+
+export async function searchapi_search(q: string, options: SearchOptions): Promise<SearchResult[]> {
+  const params = {
+    q: q,
+    hl: options.lang,
+    gl: options.country,
+    location: options.location,
+    num: options.num_results,
+    page: options.page ?? 1,
+    engine: process.env.SEARCHAPI_ENGINE || "google",
+  };
+
+  const url = `https://www.searchapi.io/api/v1/search`;
+
+  try {
+    const response = await axios.get(url, {
+      headers: {
+        "Authorization": `Bearer ${process.env.SEARCHAPI_API_KEY}`,
+        "Content-Type": "application/json",
+        "X-SearchApi-Source": "Firecrawl",
+      },
+      params: params,
+    });
+
+
+    if (response.status === 401) {
+      throw new Error("Unauthorized. Please check your API key.");
+    }
+
+    const data = response.data;
+
+    if (data && Array.isArray(data.organic_results)) {
+      return data.organic_results.map((a: any) => ({
+        url: a.link,
+        title: a.title,
+        description: a.snippet,
+      }));
+    } else {
+      return [];
+    }
+  } catch (error) {
+    console.error(`There was an error searching for content: ${error.message}`);
+    return [];
+  }
+}