import { createClient } from "https://esm.sh/@supabase/supabase-js@2";

const supabaseUrl = Deno.env.get("SUPABASE_URL");
const supabaseAnonKey = Deno.env.get("SUPABASE_ANON_KEY");
const supabaseServiceRoleKey = Deno.env.get("SUPABASE_SERVICE_ROLE_KEY");

if (!supabaseUrl || !supabaseAnonKey) {
  throw new Error("SUPABASE_URL and SUPABASE_ANON_KEY are required");
}

export function createAuthedClient(req: Request) {
  const authHeader = req.headers.get("Authorization") ?? "";
  return createClient(supabaseUrl, supabaseAnonKey, {
    global: {
      headers: { Authorization: authHeader },
    },
  });
}

export function createServiceClient() {
  if (!supabaseServiceRoleKey) {
    throw new Error("SUPABASE_SERVICE_ROLE_KEY is required");
  }
  return createClient(supabaseUrl, supabaseServiceRoleKey);
}

export async function requireUser(req: Request) {
  const client = createAuthedClient(req);
  const { data, error } = await client.auth.getUser();
  if (error || !data.user) {
    return { client, user: null, error: error?.message ?? "Unauthorized" };
  }
  return { client, user: data.user, error: null };
}

export function slugify(input: string): string {
  return input
    .toLowerCase()
    .trim()
    .replace(/[^a-z0-9]+/g, "-")
    .replace(/^-+|-+$/g, "")
    .slice(0, 64);
}