Refactor diff command to use quiet function and add OpenAI API call for writing detailed commit message

aicommit.mjs

@@ -2,8 +2,30 @@
 
 let { OPENAI_API_KEY } = await fs.readJson("./.env.json");
 
-let diff = await $`git diff --cached`;
+let diff = await quiet($`git diff --cached`);
+let prompt = `Write one detailed commit message based on the following commit: ${diff}`;
+echo(prompt);
 
-// echo("Current branch is", branch);
-// console.log(branch);
-echo(diff);
+const payload = {
+  model: "text-davinci-003",
+  prompt,
+  temperature: 0.7,
+  top_p: 1,
+  frequency_penalty: 0,
+  presence_penalty: 0,
+  max_tokens: 200,
+  stream: false,
+  n: 1,
+};
+
+const response = await fetch("https://api.openai.com/v1/completions", {
+  headers: {
+    "Content-Type": "application/json",
+    Authorization: `Bearer ${OPENAI_API_KEY ?? ""}`,
+  },
+  method: "POST",
+  body: JSON.stringify(payload),
+});
+
+const json = await response.json();
+echo(json.choices[0].text);