Final commit

backend/ai-selector.ts

@@ -0,0 +1,48 @@
+import { GoogleGenAI } from "npm:@google/genai@1.12.0";
+import { assert } from "https://deno.land/std@0.224.0/assert/mod.ts";
+import schema from "./schemas/AiSuggestionsOutput.json" with { type: "json" };
+import { AiSuggestionsOutput } from "./types/ai.ts";
+
+const ai = new GoogleGenAI({});
+
+// Generate songs using AI
+export async function generateSongs(
+  userPrompt: string,
+  rules: string,
+): Promise<AiSuggestionsOutput> {
+  const rulesText = rules && rules.trim().length > 0
+    ? `Make sure that they follow the following set of rules: "${rules}".`
+    : "";
+  const aiPrompt = `
+        Based on this music request: "${userPrompt}", generate 15 suggestion for songs.
+        Make sure they are real, popular songs that exist on Spotify.
+        Make sure to follow the following set of costraints in order to suggest songs but bear in mind
+        to return an error only in extreme cases. Ypu can be a little open even if genres clash with eah other a little bit.
+        The rules are: "${rulesText}"
+        The type should be either succes or error.
+        Make the error as user friendly as possible ans concise, and don't make it happen too often.
+        `;
+
+  const response = await ai.models.generateContent({
+    model: "gemini-2.5-flash",
+    contents: aiPrompt,
+    config: { responseMimeType: "application/json", responseSchema: schema },
+  });
+
+  const text = response.candidates?.at(0)?.content?.parts?.at(0)?.text;
+  if (!text) {
+    throw Error("Text not found");
+  }
+
+  return JSON.parse(text) as AiSuggestionsOutput;
+}
+
+Deno.test("generateSongs basic", async () => {
+  const prompt = "Give me 5 songs by the queens";
+  const rules = "Songs must vool";
+  const songs = await generateSongs(prompt, rules);
+
+  console.log(songs);
+
+  assert(songs.type === "success");
+});