import { serve } from "https://deno.land/std@0.168.0/http/server.ts";
import { mydb } from "../../lib/mySupabase.ts";
import { corsHeaders, jsonResponse, errorResponse } from "../../lib/utils.ts";
import { logUserAction } from "../../lib/auditLog.ts";

/**
 * POST /appointments-checkin
 * Registrar check-in do paciente (chegou no consultório)
 * Adiciona automaticamente à fila virtual
 *
 * Body:
 * {
 *   appointment_id: uuid,
 *   check_in_method: 'manual' | 'qr_code' | 'nfc' | 'app' | 'kiosk'
 * }
 */

serve(async (req) => {
  if (req.method === "OPTIONS") {
    return new Response("ok", { status: 200, headers: corsHeaders() });
  }

  try {
    if (req.method !== "POST") {
      return errorResponse("Method not allowed", 405);
    }

    const body = await req.json();
    const { appointment_id, check_in_method, external_patient_id } = body;

    if (!external_patient_id) {
      return errorResponse("external_patient_id is required", 400);
    }

    // Registrar check-in no banco (se houver tabela checkin_tracking)
    // await mydb.from("checkin_tracking").insert({
    //   external_appointment_id: appointment_id,
    //   external_patient_id,
    //   check_in_method,
    // });

    // Buscar ou criar entrada na virtual_queue
    const queueRes = await mydb
      .from("virtual_queue")
      .select("*")
      .eq("external_appointment_id", appointment_id)
      .single();

    let position = 1;
    let isNewQueue = false;

    if (!queueRes.data) {
      // Criar entrada na fila
      const newQueueRes = await mydb
        .from("virtual_queue")
        .insert({
          external_appointment_id: appointment_id,
          external_patient_id,
          position: 1,
          status: "waiting",
          estimated_wait_minutes: 15,
        })
        .select()
        .single();

      if (newQueueRes.data) {
        position = newQueueRes.data.position;
        isNewQueue = true;
      }
    } else {
      position = queueRes.data.position;
    }

    return jsonResponse({
      success: true,
      appointment_id,
      checked_in_at: new Date().toISOString(),
      position_in_queue: position,
    });
  } catch (error: unknown) {
    console.error("[checkin]", error);
    const err = error as Error;
    return errorResponse(err.message, 500);
  }
});