/*
 * Shared library loader for libfprint
 * Copyright (C) 2021 Marco Trevisan <marco.trevisan@canonical.com>
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 */

#include <libfprint/fprint.h>

#include "libfprint/tod/tod-shared-loader.h"
#include "libfprint/fpi-device.h"

static char *
id_table_to_string (FpDeviceType     device_type,
                    const FpIdEntry *id_table)
{
  const FpIdEntry *entry;
  char *str = NULL;

  if (!id_table)
    return g_strdup ("INVALID: Empty ID table");

  entry = id_table;
  while (TRUE)
    {
      g_autofree char *value = NULL;

      if (device_type == FP_DEVICE_TYPE_VIRTUAL)
        {
          if (entry->virtual_envvar)
            value = g_strdup (entry->virtual_envvar);
        }
      else if (device_type == FP_DEVICE_TYPE_USB)
        {
          if (entry->vid)
            value = g_strdup_printf ("%04x:%04x", entry->vid, entry->pid);
        }
      else
        {
          return g_strdup ("Unsupported device type");
        }

      if (!value)
        return str;

      if (!str)
        {
          str = g_steal_pointer (&value);
        }
      else
        {
          g_autofree char *tmp = g_steal_pointer (&str);
          str = g_strconcat (tmp, ", ", value, NULL);
        }

      entry++;
    }

  return str;
}

static const char *
device_type_to_string (FpDeviceType device_type)
{
  g_autoptr(GEnumClass) device_types = g_type_class_ref (fp_device_type_get_type ());
  GEnumValue *value = g_enum_get_value (device_types, device_type);

  return value->value_nick;
}

static const char *
scan_type_to_string (FpScanType scan_type)
{
  g_autoptr(GEnumClass) scan_types = g_type_class_ref (fp_scan_type_get_type ());
  GEnumValue *value = g_enum_get_value (scan_types, scan_type);

  return value->value_nick;
}

int
main (void)
{
  g_autoptr(GArray) shared_drivers = NULL;
  guint i;

  fpi_tod_shared_drivers_register ();

  shared_drivers = fpi_tod_shared_drivers_get ();
  g_print ("Found %u drivers\n", shared_drivers->len);

  for (i = 0; i < shared_drivers->len; i++)
    {
      GType driver = g_array_index (shared_drivers, GType, i);
      g_autoptr(FpDeviceClass) cls = g_type_class_ref (driver);
      g_autofree char *id_table = NULL;
      g_autofree char *features = NULL;

      id_table = id_table_to_string (cls->type, cls->id_table);
      features = g_flags_to_string (fp_device_feature_get_type (), cls->features);

      g_print ("ID: %s\n", cls->id);
      g_print ("Full Name: %s\n", cls->full_name);
      g_print ("Type: %s\n", device_type_to_string (cls->type));
      g_print ("Enroll stages: %d\n", cls->nr_enroll_stages);
      g_print ("Scan type: %s\n", scan_type_to_string (cls->scan_type));
      g_print ("Supported Devices: %s\n", id_table);
      g_print ("Supported features: %s\n", features);
      g_print ("Implemented VFuncs:\n");
      g_print ("  usb_discover: %s\n", cls->usb_discover ? "true" : "false");
      g_print ("  probe: %s\n", cls->probe ? "true" : "false");
      g_print ("  open: %s\n", cls->open ? "true" : "false");
      g_print ("  close: %s\n", cls->close ? "true" : "false");
      g_print ("  enroll: %s\n", cls->enroll ? "true" : "false");
      g_print ("  verify: %s\n", cls->verify ? "true" : "false");
      g_print ("  identify: %s\n", cls->identify ? "true" : "false");
      g_print ("  capture: %s\n", cls->capture ? "true" : "false");
      g_print ("  list: %s\n", cls->list ? "true" : "false");
      g_print ("  delete: %s\n", cls->delete ? "true" : "false");
      g_print ("  cancel: %s\n", cls->cancel ? "true" : "false");

      if (i < shared_drivers->len - 1)
        g_print ("------------\n");
    }

  fpi_tod_shared_drivers_unregister ();
}