import { validateExternalAuth } from "../_shared/auth.ts";

const corsHeaders = {
  "Access-Control-Allow-Origin": "*",
  "Access-Control-Allow-Headers":
    "authorization, x-client-info, apikey, content-type",
};

Deno.serve(async (req) => {
  if (req.method === "OPTIONS")
    return new Response("ok", { headers: corsHeaders });

  try {
    const authHeader = req.headers.get("Authorization");
    const supabase = createClient(
      Deno.env.get("SUPABASE_URL")!,
      Deno.env.get("SUPABASE_ANON_KEY")!,
      { global: { headers: { Authorization: authHeader! } } }
    );

    const {
      data: { user },
    } = await supabase.auth.getUser();
    if (!user) throw new Error("Unauthorized");

    // Buscar histórico estendido com tipos
    const { data: history } = await supabase
      .from("patient_extended_history")
      .select("type")
      .order("created_at", { ascending: false })
      .limit(1000);

    // Agrupar por tipo
    const counts: Record<string, number> = {};
    history?.forEach((h: any) => {
      const type = h.type || "unknown";
      counts[type] = (counts[type] || 0) + 1;
    });

    // Transformar em array e ordenar
    const ranking = Object.entries(counts)
      .map(([reason, count]) => ({ reason, count }))
      .sort((a, b) => b.count - a.count);

    const data = { ranking, total: history?.length || 0 };

    return new Response(JSON.stringify({ success: true, data }), {
      headers: { ...corsHeaders, "Content-Type": "application/json" },
    });
  } catch (error: any) {
    return new Response(
      JSON.stringify({ success: false, error: error.message }),
      {
        status: 400,
        headers: { ...corsHeaders, "Content-Type": "application/json" },
      }
    );
  }
});