/* EFL - EFL library
 * Copyright (C) 2013 Cedric Bail
 *
 * 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, see <http://www.gnu.org/licenses/>.
 */

#ifdef HAVE_CONFIG_H
# include "config.h"
#endif

#include "efl_suite.h"

#include <Efl.h>
#include <Ecore.h>

static const int child_number = 3;
static const int base_ints[] = { 41, 42, 43 };
static const Eina_Bool base_selections[] = { EINA_FALSE, EINA_FALSE, EINA_TRUE };

static Eina_Value
_children_slice_get_then(void *data EINA_UNUSED,
                         const Eina_Value v,
                         const Eina_Future *dead_future EINA_UNUSED)
{
   unsigned int i, len;
   Efl_Model *child;

   fail_if(eina_value_type_get(&v) != EINA_VALUE_TYPE_ARRAY);

   EINA_VALUE_ARRAY_FOREACH(&v, len, i, child)
     {
        Eina_Value *p_int = NULL;
        Eina_Value *p_true = NULL;
        Eina_Value *p_false = NULL;
        int v_int = 0;
        Eina_Bool v_true = EINA_FALSE;
        Eina_Bool v_false = EINA_TRUE;

        p_int = efl_model_property_get(child, "test_p_int");
        p_true = efl_model_property_get(child, "test_p_true");
        p_false = efl_model_property_get(child, "test_p_false");

        eina_value_get(p_int, &v_int);
        eina_value_get(p_true, &v_true);
        eina_value_get(p_false, &v_false);

        fail_if(v_int != base_ints[i]);
        fail_if(v_true != EINA_TRUE);
        fail_if(v_false != EINA_FALSE);

        eina_value_free(p_int);
        eina_value_free(p_true);
        eina_value_free(p_false);
     }

   ecore_main_loop_quit();

   return v;
}

static Eina_Value
_selection_children_slice_get_then(void *data EINA_UNUSED,
                                   const Eina_Value v,
                                   const Eina_Future *dead_future EINA_UNUSED)
{
   unsigned int i, len;
   Efl_Model *child = NULL;

   fail_if(eina_value_type_get(&v) != EINA_VALUE_TYPE_ARRAY);

   EINA_VALUE_ARRAY_FOREACH(&v, len, i, child)
     {
        Eina_Value *p_int = NULL;
        Eina_Value *p_bool = NULL;
        Eina_Value *p_index = NULL;
        int v_int = 0;
        unsigned int index = 0;
        Eina_Bool v_bool = EINA_FALSE;

        p_bool = efl_model_property_get(child, "selected");
        p_int = efl_model_property_get(child, "test_p_int");
        p_index = efl_model_property_get(child, "child.index");

        eina_value_get(p_bool, &v_bool);
        eina_value_get(p_int, &v_int);
        fail_if(!eina_value_uint_convert(p_index, &index));

        fail_if(v_bool != base_selections[i]);
        fail_if(v_int != base_ints[i]);
        ck_assert_int_eq(i, index);

        eina_value_free(p_bool);
        eina_value_free(p_int);
        eina_value_free(p_index);
     }

   ecore_main_loop_quit();

   return v;
}

EFL_START_TEST(efl_test_boolean_model)
{
   Efl_Generic_Model *base_model, *child;
   int i;
   Eina_Value v = { 0 };
   Efl_Boolean_Model *model;
   Eina_Future *future;

   eina_value_setup(&v, EINA_VALUE_TYPE_INT);

   base_model = efl_add_ref(EFL_GENERIC_MODEL_CLASS, efl_main_loop_get());
   ck_assert(!!base_model);

   for (i = 0; i < child_number; ++i)
     {
        child = efl_model_child_add(base_model);
        ck_assert(!!child);
        ck_assert(eina_value_set(&v, base_ints[i]));
        efl_model_property_set(child, "test_p_int", &v);
     }

   model = efl_add_ref(EFL_BOOLEAN_MODEL_CLASS, efl_main_loop_get(),
                  efl_ui_view_model_set(efl_added, base_model),
                  efl_boolean_model_boolean_add(efl_added, "test_p_true", EINA_TRUE),
                  efl_boolean_model_boolean_add(efl_added, "test_p_false", EINA_FALSE));
   ck_assert(!!model);

   future = efl_model_children_slice_get(model, 0, efl_model_children_count_get(model));
   eina_future_then(future, _children_slice_get_then, NULL, NULL);

   ecore_main_loop_begin();
}
EFL_END_TEST

static Eina_Value
_wait_propagate(void *data EINA_UNUSED,
                const Eina_Value v,
                const Eina_Future *dead_future EINA_UNUSED)
{
   ecore_main_loop_quit();
   return v;
}

EFL_START_TEST(efl_test_select_model)
{
   Efl_Generic_Model *base_model, *child;
   int i;
   Eina_Value v = { 0 };
   Efl_Select_Model *model;
   Eina_Future *future;
   Eina_Iterator *it;
   uint64_t *index;

   eina_value_setup(&v, EINA_VALUE_TYPE_INT);

   base_model = efl_add_ref(EFL_GENERIC_MODEL_CLASS, efl_main_loop_get());
   ck_assert(!!base_model);

   for (i = 0; i < child_number; ++i)
     {
        child = efl_model_child_add(base_model);
        ck_assert(!!child);
        ck_assert(eina_value_set(&v, base_ints[i]));
        efl_model_property_set(child, "test_p_int", &v);
     }

   model = efl_add_ref(EFL_SELECT_MODEL_CLASS, efl_main_loop_get(),
                   efl_ui_view_model_set(efl_added, base_model));
   ck_assert(!!model);
   future = efl_model_property_set(model, "child.selected", eina_value_int_new(2));
   eina_future_then(future, _wait_propagate, NULL, NULL);
   ecore_main_loop_begin();

   future = efl_model_children_slice_get(model, 0, efl_model_children_count_get(model));
   eina_future_then(future, _selection_children_slice_get_then, NULL, NULL);

   ecore_main_loop_begin();

   it = efl_select_model_selected_get(model);
   EINA_ITERATOR_FOREACH(it, index)
     fail_if(*index != 2);
   eina_iterator_free(it);

   it = efl_select_model_unselected_get(model);
   EINA_ITERATOR_FOREACH(it, index)
     fail_if(*index == 2);
   eina_iterator_free(it);
}
EFL_END_TEST

typedef struct _Efl_Filter_Model_Wait Efl_Filter_Model_Wait;
struct _Efl_Filter_Model_Wait
{
   Efl_Model *child;
   Efl_Model *parent;
   Eina_Promise *p;
};

static void _wait_for_it(void *data, const Efl_Event *event);

static void
_wait_cleanup(Efl_Filter_Model_Wait *mw)
{
   efl_event_callback_del(mw->child, EFL_MODEL_EVENT_PROPERTIES_CHANGED, _wait_for_it, mw);
   efl_unref(mw->child);
   efl_unref(mw->parent);
   free(mw);
}

static void
_wait_for_it(void *data, const Efl_Event *event)
{
   Efl_Model_Property_Event *ev = event->info;
   Efl_Filter_Model_Wait *mw = data;
   const char *property;
   unsigned int i;
   Eina_Array_Iterator it;

   EINA_ARRAY_ITER_NEXT(ev->changed_properties, i, property, it)
     {
        if (!strcmp(property, "ready"))
          {
             Eina_Value *value = efl_model_property_get(event->object, "ready");
             Eina_Bool r;
             Eina_Error err = 0;

             if (eina_value_type_get(value) == EINA_VALUE_TYPE_BOOL &&
                 eina_value_bool_get(value, &r) &&
                 r)
               {
                  eina_value_free(value);
                  eina_promise_resolve(mw->p, eina_value_bool_init(EINA_TRUE));
                  _wait_cleanup(mw);
                  return ;
               }
             if (eina_value_type_get(value) == EINA_VALUE_TYPE_ERROR &&
                 eina_value_error_get(value, &err) &&
                 err != EAGAIN)
               {
                  eina_value_free(value);
                  eina_promise_reject(mw->p, err);
                  _wait_cleanup(mw);
                  return ;
               }
             eina_value_free(value);
             break;
          }
     }
}

static void
_wait_cancel(void *data, const Eina_Promise *dead_ptr EINA_UNUSED)
{
   _wait_cleanup(data);
}

static Eina_Future *
_wait_ready_true(Efl_Model *parent, Efl_Model *child)
{
   Efl_Filter_Model_Wait *mw;
   Eina_Value *value = efl_model_property_get(child, "ready");
   Eina_Bool r = EINA_FALSE;
   Eina_Error err = 0;

   if (eina_value_type_get(value) == EINA_VALUE_TYPE_BOOL &&
       eina_value_bool_get(value, &r) &&
       r)
     {
        eina_value_free(value);
        return efl_loop_future_resolved(parent, eina_value_bool_init(EINA_TRUE));
     }
   if (eina_value_type_get(value) == EINA_VALUE_TYPE_ERROR &&
       eina_value_error_get(value, &err) &&
       err != EAGAIN)
     {
        eina_value_free(value);
        return efl_loop_future_rejected(parent, err);
     }

   eina_value_free(value);

   mw = calloc(1, sizeof (Efl_Filter_Model_Wait));
   if (!mw) return efl_loop_future_rejected(parent, ENOMEM);

   mw->p = eina_promise_new(efl_loop_future_scheduler_get(parent), _wait_cancel, mw);
   mw->child = efl_ref(child);
   mw->parent = efl_ref(parent);

   efl_event_callback_add(child, EFL_MODEL_EVENT_PROPERTIES_CHANGED,
                          _wait_for_it, mw);

   return efl_future_then(child, eina_future_new(mw->p));
}

static Eina_Future *
_filter_cb(void *data EINA_UNUSED, Efl_Filter_Model *parent, Efl_Model *child)
{
   return _wait_ready_true(parent, child);
}

static Eina_Value
_fetch_and_switch(Eo *o EINA_UNUSED, void *data EINA_UNUSED, const Eina_Value v)
{
   unsigned int i, len;
   Eo *target = NULL;
   Eina_Future **all;

   all = calloc(1, sizeof (Eina_Future *) * (eina_value_array_count(&v) + 1));
   if (!all) return eina_value_error_init(ENOMEM);

   EINA_VALUE_ARRAY_FOREACH(&v, len, i, target)
     {
        all[i] = efl_model_property_set(target, "ready", eina_value_bool_new(EINA_TRUE));
     }
   all[i] = EINA_FUTURE_SENTINEL;

   return eina_future_as_value(eina_future_all_array(all));
}

static void
_count_changed(void *data, const Efl_Event *ev)
{
   Eina_Promise *p = data;

   if (efl_model_children_count_get(ev->object) != (unsigned int)child_number) return ;

   efl_event_callback_del(ev->object, EFL_MODEL_EVENT_CHILDREN_COUNT_CHANGED,
                          _count_changed, p);
   eina_promise_resolve(p, eina_value_bool_init(EINA_TRUE));
}

static void
_wait_count_cancel(void *data, const Eina_Promise *dead_ptr EINA_UNUSED)
{
   Eo *filter = data;

   efl_unref(filter);
}

static Eina_Value
_wait_count(Eo *filter, void *data EINA_UNUSED, const Eina_Value v EINA_UNUSED)
{
   Eina_Promise *p;
   Eina_Future *racing[3];
   Eina_Future *race;

   p = eina_promise_new(efl_loop_future_scheduler_get(filter),
                        _wait_count_cancel, efl_ref(filter));
   efl_event_callback_add(filter, EFL_MODEL_EVENT_CHILDREN_COUNT_CHANGED, _count_changed, p);

   racing[0] = eina_future_new(p);
   racing[1] = efl_loop_timeout(efl_loop_get(filter), 0.3);
   racing[2] = EINA_FUTURE_SENTINEL;

   race = eina_future_race_array(racing);

   return eina_future_as_value(race);
}

static Eina_Value
_count_and_fetch(Eo *filter, void *data EINA_UNUSED, const Eina_Value v EINA_UNUSED)
{
   ck_assert_int_eq(efl_model_children_count_get(filter), child_number);

   return eina_future_as_value(efl_model_children_slice_get(filter, 0, child_number));
}

static Eina_Value
_check_index(Eo *o EINA_UNUSED, void *data EINA_UNUSED, const Eina_Value v)
{
   unsigned int i, len;
   Eo *target = NULL;

   EINA_VALUE_ARRAY_FOREACH(&v, len, i, target)
     {
        Eina_Value *p_original;
        uint64_t idx, original;

        idx = efl_composite_model_index_get(target);
        p_original = efl_model_property_get(target, "original");
        fail_if(!eina_value_uint64_convert(p_original, &original));
        ck_assert(original < (uint64_t)child_number);
        ck_assert(idx < (uint64_t)child_number);

        eina_value_free(p_original);
     }

   return v;
}

static void
_cleanup(Eo *o EINA_UNUSED, void *data EINA_UNUSED, const Eina_Future *dead_future EINA_UNUSED)
{
   ecore_main_loop_quit();
}

EFL_START_TEST(efl_test_filter_model)
{
   Efl_Generic_Model *base_model, *child;
   int i;
   Eina_Value v = { 0 };
   Efl_Boolean_Model *model;
   Efl_Boolean_Model *filter;
   Eina_Future *future;

   eina_value_setup(&v, EINA_VALUE_TYPE_INT);

   base_model = efl_add_ref(EFL_GENERIC_MODEL_CLASS, efl_main_loop_get());
   ck_assert(!!base_model);

   for (i = 0; i < child_number; ++i)
     {
        child = efl_model_child_add(base_model);
        ck_assert(!!child);
        ck_assert(eina_value_set(&v, base_ints[i]));
        efl_model_property_set(child, "test_p_int", &v);
        efl_model_property_set(child, "original", eina_value_int_new(i));
     }

   model = efl_add_ref(EFL_BOOLEAN_MODEL_CLASS, efl_main_loop_get(),
                       efl_ui_view_model_set(efl_added, base_model),
                       efl_boolean_model_boolean_add(efl_added, "test_p_true", EINA_TRUE),
                       efl_boolean_model_boolean_add(efl_added, "test_p_false", EINA_FALSE),
                       efl_boolean_model_boolean_add(efl_added, "ready", EINA_FALSE));
   ck_assert(!!model);

   filter = efl_add_ref(EFL_FILTER_MODEL_CLASS, efl_main_loop_get(),
                        efl_ui_view_model_set(efl_added, model),
                        efl_filter_model_filter_set(efl_added, NULL, _filter_cb, NULL));
   ck_assert(!!filter);
   ck_assert_int_eq(efl_model_children_count_get(filter), 0);

   future = efl_model_children_slice_get(model, 0, efl_model_children_count_get(model));
   future = efl_future_then(model, future,
                            .success = _fetch_and_switch);
   future = efl_future_then(filter, future,
                            .success = _wait_count);
   future = efl_future_then(filter, future,
                            .success = _count_and_fetch);
   future = efl_future_then(filter, future,
                            .success = _check_index,
                            .free = _cleanup);

   ecore_main_loop_begin();

   efl_unref(filter);
   efl_del(filter);
}
EFL_END_TEST

void
efl_test_case_boolean_model(TCase *tc)
{
   tcase_add_test(tc, efl_test_boolean_model);
   tcase_add_test(tc, efl_test_select_model);
   tcase_add_test(tc, efl_test_filter_model);
}