/**
 * Netlify Function: Logout
 * Invalida a sessão do usuário no Supabase
 */

import type { Handler, HandlerEvent } from "@netlify/functions";

const SUPABASE_URL = "https://yuanqfswhberkoevtmfr.supabase.co";
const SUPABASE_ANON_KEY =
  "eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJpc3MiOiJzdXBhYmFzZSIsInJlZiI6Inl1YW5xZnN3aGJlcmtvZXZ0bWZyIiwicm9sZSI6ImFub24iLCJpYXQiOjE3NTQ5NTQzNjksImV4cCI6MjA3MDUzMDM2OX0.g8Fm4XAvtX46zifBZnYVH4tVuQkqUH6Ia9CXQj4DztQ";

export const handler: Handler = async (event: HandlerEvent) => {
  const headers = {
    "Access-Control-Allow-Origin": "*",
    "Access-Control-Allow-Headers": "Content-Type, Authorization",
    "Access-Control-Allow-Methods": "POST, OPTIONS",
  };

  if (event.httpMethod === "OPTIONS") {
    return {
      statusCode: 200,
      headers,
      body: "",
    };
  }

  if (event.httpMethod !== "POST") {
    return {
      statusCode: 405,
      headers,
      body: JSON.stringify({ error: "Method Not Allowed" }),
    };
  }

  try {
    // Pega o Bearer token do header
    const authHeader =
      event.headers.authorization || event.headers.Authorization;

    if (!authHeader) {
      return {
        statusCode: 401,
        headers,
        body: JSON.stringify({ error: "Token não fornecido" }),
      };
    }

    // Faz logout no Supabase
    const response = await fetch(`${SUPABASE_URL}/auth/v1/logout`, {
      method: "POST",
      headers: {
        "Content-Type": "application/json",
        apikey: SUPABASE_ANON_KEY,
        Authorization: authHeader,
      },
    });

    // Logout retorna 204 No Content (sem body)
    if (response.status === 204) {
      return {
        statusCode: 204,
        headers,
        body: "",
      };
    }

    // Se não for 204, retorna o body da resposta
    const data = await response.text();

    return {
      statusCode: response.status,
      headers: {
        ...headers,
        "Content-Type": "application/json",
      },
      body: data || "{}",
    };
  } catch (error) {
    console.error("Erro no logout:", error);

    return {
      statusCode: 500,
      headers,
      body: JSON.stringify({
        error: "Erro interno no servidor",
        message: error instanceof Error ? error.message : "Erro desconhecido",
      }),
    };
  }
};