/**
 * Netlify Function: Delete Avatar
 * DELETE /storage/v1/object/avatars/{userId}/avatar
 */

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": "DELETE, OPTIONS",
  };

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

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

  try {
    const authHeader =
      event.headers.authorization || event.headers.Authorization;

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

    const userId = event.queryStringParameters?.userId;

    if (!userId) {
      return {
        statusCode: 400,
        headers,
        body: JSON.stringify({ error: "userId é obrigatório" }),
      };
    }

    const response = await fetch(
      `${SUPABASE_URL}/storage/v1/object/avatars/${userId}/avatar`,
      {
        method: "DELETE",
        headers: {
          apikey: SUPABASE_ANON_KEY,
          Authorization: authHeader,
        },
      }
    );

    // DELETE pode retornar 200 com body vazio
    const contentType = response.headers.get("content-type");
    const data = contentType?.includes("application/json")
      ? await response.json()
      : {};

    return {
      statusCode: response.status,
      headers: {
        ...headers,
        "Content-Type": "application/json",
      },
      body: JSON.stringify(data),
    };
  } catch (error) {
    console.error("Erro ao deletar avatar:", error);

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