import { createRouteHandlerClient } from "@supabase/auth-helpers-nextjs";
import { cookies } from "next/headers";
import { NextResponse, NextRequest } from "next/server";
import { Database } from "@/types/supabase";
import prisma from "@/lib/prisma";
import { generateFeatures } from "@/lib/prompts";
import openai from "@/lib/openai";
import { randomUUID } from "crypto";

import { completion } from "zod-gpt";
import * as z from "zod";

const MIN_FEATURES_PER_PROJECT = 6;
const MAX_FEATURES_PER_PROJECT = 12;

async function getSession(supabase: any) {
  const {
    data: { session },
  } = await supabase.auth.getSession();
  return session;
}

// generate features for project
export async function POST(req: NextRequest) {
  const supabase = createRouteHandlerClient<Database>({ cookies });
  const session = await getSession(supabase);

  if (!session) return NextResponse.redirect("/auth");

  try {
    // TODO: generate features for project
    const req_data = await req.json();
    const project_name = String(req_data.project_name);
    const project_description = String(req_data.project_description);
    const project_stack = req_data.project_stack;
    const qa = req_data.qa;

    console.log(project_name, project_description, project_stack, qa);

    const feature_gen_prompt = generateFeatures(
      project_name,
      project_description,
      project_stack,
      qa
    );

    const res = await completion(openai, feature_gen_prompt, {
      schema: z.object({
        features: z
          .array(
            z.object({
              name: z.string().describe("The name of the feature"),
              description: z
                .string()
                .describe("The description of the feature"),
            })
          )
          .min(MIN_FEATURES_PER_PROJECT)
          .max(MAX_FEATURES_PER_PROJECT),
      }),
    });

    const features = res.data.features.map((feature) => ({
      ...feature,
      uid: String(randomUUID()),
      project_id: String(req_data.project_id),
    }));

    console.log(features);

    return NextResponse.json({ features }, { status: 200 });
  } catch (err) {
    console.error(err);
    return NextResponse.json({ error: err }, { status: 500 });
  }
}