/*
 * Copyright (C) 2018 Purism SPC
 *
 * This file is part of Calls.
 *
 * Calls is free software: you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * Calls 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
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with Calls.  If not, see <http://www.gnu.org/licenses/>.
 *
 * Author: Bob Ham <bob.ham@puri.sm>
 *
 * SPDX-License-Identifier: GPL-3.0-or-later
 *
 */

#include "calls-dummy-origin.h"
#include "calls-message-source.h"
#include "calls-origin.h"
#include "calls-dummy-call.h"

#include <glib/gi18n.h>
#include <glib-object.h>


struct _CallsDummyOrigin {
  GObject  parent_instance;
  GString *name;
  GList   *calls;
};

const char *emergency_numbers[] = { "123", "456", NULL };

static void calls_dummy_origin_message_source_interface_init (CallsOriginInterface *iface);
static void calls_dummy_origin_origin_interface_init (CallsOriginInterface *iface);

G_DEFINE_TYPE_WITH_CODE (CallsDummyOrigin, calls_dummy_origin, G_TYPE_OBJECT,
                         G_IMPLEMENT_INTERFACE (CALLS_TYPE_MESSAGE_SOURCE,
                                                calls_dummy_origin_message_source_interface_init)
                         G_IMPLEMENT_INTERFACE (CALLS_TYPE_ORIGIN,
                                                calls_dummy_origin_origin_interface_init))

enum {
  PROP_0,

  PROP_ID,
  /* Property for setting the origins name upon construction */
  PROP_DUMMY_NAME_CONSTRUCTOR,

  /* The origins name. The implements the name property from CallsOrigin.
   * Readonly property, can't be set directly. */
  PROP_NAME,

  PROP_CALLS,
  PROP_COUNTRY_CODE,
  PROP_EMERGENCY_NUMBERS,
  PROP_LAST_PROP,
};
static GParamSpec *props[PROP_LAST_PROP];


static void
remove_call (CallsDummyOrigin *self,
             CallsCall        *call,
             const gchar      *reason)
{
  CallsOrigin *origin;

  origin = CALLS_ORIGIN (self);
  self->calls = g_list_remove (self->calls, call);

  g_signal_emit_by_name (origin, "call-removed", call, reason);

  g_object_unref (G_OBJECT (call));
}


static void
remove_calls (CallsDummyOrigin *self, const gchar *reason)
{
  gpointer call;
  GList *next;

  while (self->calls != NULL) {
    call = self->calls->data;
    next = self->calls->next;
    g_list_free_1 (self->calls);
    self->calls = next;

    g_signal_emit_by_name (self, "call-removed", call, reason);
    g_object_unref (call);
  }
}


struct DisconnectedData {
  CallsDummyOrigin *self;
  CallsCall        *call;
};


static void
call_state_changed_cb (CallsCall        *call,
                       GParamSpec       *pspec,
                       CallsDummyOrigin *self)
{
  g_assert (CALLS_IS_DUMMY_ORIGIN (self));
  g_assert (CALLS_IS_DUMMY_CALL (call));

  if (calls_call_get_state (call) != CALLS_CALL_STATE_DISCONNECTED)
    return;

  remove_call (self, call, "Disconnected");
}


static void
add_call (CallsDummyOrigin *self, const gchar *number, gboolean inbound)
{
  CallsDummyCall *dummy_call;
  CallsCall *call;

  dummy_call = calls_dummy_call_new (number, inbound);
  g_assert (dummy_call != NULL);

  call = CALLS_CALL (dummy_call);
  g_signal_connect (call, "notify::state",
                    G_CALLBACK (call_state_changed_cb),
                    self);
  self->calls = g_list_append (self->calls, dummy_call);

  g_signal_emit_by_name (CALLS_ORIGIN (self), "call-added", call);
}


static void
dial (CallsOrigin *origin, const gchar *number)
{
  g_return_if_fail (number != NULL);
  g_return_if_fail (CALLS_IS_DUMMY_ORIGIN (origin));

  add_call (CALLS_DUMMY_ORIGIN (origin), number, FALSE);
}


static gboolean
supports_protocol (CallsOrigin *origin,
                   const char  *protocol)
{
  g_assert (protocol != NULL);
  g_assert (CALLS_IS_DUMMY_ORIGIN (origin));

  return g_strcmp0 (protocol, "tel") == 0;
}


CallsDummyOrigin *
calls_dummy_origin_new (const gchar *name)
{
  return g_object_new (CALLS_TYPE_DUMMY_ORIGIN,
                       "dummy-name-constructor", name,
                       NULL);
}


static void
set_property (GObject      *object,
              guint         property_id,
              const GValue *value,
              GParamSpec   *pspec)
{
  CallsDummyOrigin *self = CALLS_DUMMY_ORIGIN (object);

  switch (property_id) {
  case PROP_DUMMY_NAME_CONSTRUCTOR:
    g_string_assign (self->name, g_value_get_string (value));
    break;

  case PROP_ID: /* ignored for the dummy origin */
    break;

  default:
    G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
    break;
  }
}


static void
get_property (GObject    *object,
              guint       property_id,
              GValue     *value,
              GParamSpec *pspec)
{
  CallsDummyOrigin *self = CALLS_DUMMY_ORIGIN (object);

  switch (property_id) {
  case PROP_ID:
    g_value_set_string (value, self->name->str);
    break;

  case PROP_NAME:
    g_value_set_string (value, self->name->str);
    break;

  case PROP_CALLS:
    g_value_set_pointer (value, g_list_copy (self->calls));
    break;

  case PROP_COUNTRY_CODE:
    g_value_set_string (value, NULL);
    break;

  case PROP_EMERGENCY_NUMBERS:
    g_value_set_boxed (value, emergency_numbers);
    break;

  default:
    G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
    break;
  }
}


static void
dispose (GObject *object)
{
  CallsDummyOrigin *self = CALLS_DUMMY_ORIGIN (object);

  remove_calls (self, NULL);

  G_OBJECT_CLASS (calls_dummy_origin_parent_class)->dispose (object);
}


static void
finalize (GObject *object)
{
  CallsDummyOrigin *self = CALLS_DUMMY_ORIGIN (object);

  g_string_free (self->name, TRUE);
  g_list_free (self->calls);

  G_OBJECT_CLASS (calls_dummy_origin_parent_class)->finalize (object);
}


static void
calls_dummy_origin_class_init (CallsDummyOriginClass *klass)
{
  GObjectClass *object_class = G_OBJECT_CLASS (klass);

  object_class->dispose = dispose;
  object_class->finalize = finalize;
  object_class->get_property = get_property;
  object_class->set_property = set_property;

  props[PROP_DUMMY_NAME_CONSTRUCTOR] =
    g_param_spec_string ("dummy-name-constructor",
                         "Name",
                         "The name of the origin",
                         "Dummy origin",
                         G_PARAM_WRITABLE | G_PARAM_CONSTRUCT_ONLY);
  g_object_class_install_property (object_class, PROP_DUMMY_NAME_CONSTRUCTOR, props[PROP_DUMMY_NAME_CONSTRUCTOR]);


#define IMPLEMENTS(ID, NAME) \
  g_object_class_override_property (object_class, ID, NAME);    \
  props[ID] = g_object_class_find_property(object_class, NAME);

  IMPLEMENTS (PROP_ID, "id");
  IMPLEMENTS (PROP_NAME, "name");
  IMPLEMENTS (PROP_CALLS, "calls");
  IMPLEMENTS (PROP_COUNTRY_CODE, "country-code");
  IMPLEMENTS (PROP_EMERGENCY_NUMBERS, "emergency-numbers");

#undef IMPLEMENTS
}


static void
calls_dummy_origin_message_source_interface_init (CallsOriginInterface *iface)
{
}


static void
calls_dummy_origin_origin_interface_init (CallsOriginInterface *iface)
{
  iface->dial = dial;
  iface->supports_protocol = supports_protocol;
}


static void
calls_dummy_origin_init (CallsDummyOrigin *self)
{
  self->name = g_string_new (NULL);
}


void
calls_dummy_origin_create_inbound (CallsDummyOrigin *self,
                                   const gchar      *number)
{
  g_return_if_fail (CALLS_IS_DUMMY_ORIGIN (self));

  add_call (self, number, TRUE);
}