/***

  Olive - Non-Linear Video Editor
  Copyright (C) 2019 Olive Team

  This program 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.

  This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.

***/

#include "item.h"

OLIVE_NAMESPACE_ENTER

Item::Item() :
  parent_(nullptr),
  project_(nullptr)
{
}

Item::~Item()
{
}

void Item::add_child(ItemPtr c)
{
  if (c->parent_ == this) {
    return;
  }

  if (c->parent_ != nullptr) {
    c->parent_->remove_child(c.get());
  }

  children_.append(c);
  c->parent_ = this;
}

void Item::remove_child(Item *c)
{
  if (c->parent_ != this) {
    return;
  }

  // Remove all instances of this child in the list
  for (int i=0;i<children_.size();i++) {
    if (children_.at(i).get() == c) {
      children_.removeAt(i);
      i--;
    }
  }

  c->parent_ = nullptr;
}

int Item::child_count() const
{
  return children_.size();
}

Item *Item::child(int i) const
{
  return children_.at(i).get();
}

const QList<ItemPtr> &Item::children() const
{
  return children_;
}

ItemPtr Item::get_shared_ptr() const
{
  QList<ItemPtr> siblings = parent()->children();

  foreach (ItemPtr s, siblings) {
    if (s.get() == this) {
      return s;
    }
  }

  return nullptr;
}

const QString &Item::name() const
{
  return name_;
}

void Item::set_name(const QString &n)
{
  name_ = n;

  NameChangedEvent(n);
}

const QString &Item::tooltip() const
{
  return tooltip_;
}

void Item::set_tooltip(const QString &t)
{
  tooltip_ = t;
}

QString Item::duration()
{
  return QString();
}

QString Item::rate()
{
  return QString();
}

Item *Item::parent() const
{
  return parent_;
}

const Item *Item::root() const
{
  const Item* item = this;

  while (item->parent()) {
    item = item->parent();
  }

  return item;
}

Project *Item::project() const
{
  const Item* root_item = root();

  return root_item->project_;
}

void Item::set_project(Project *project)
{
  project_ = project;
}

QList<ItemPtr> Item::get_children_of_type(Type type, bool recursive) const
{
  QList<ItemPtr> list;

  foreach (ItemPtr item, children_) {
    if (item->type() == type) {
      list.append(item);
    }

    if (recursive && item->CanHaveChildren()) {
      list.append(item->get_children_of_type(type, recursive));
    }
  }

  return list;
}

bool Item::CanHaveChildren() const
{
  return false;
}

bool Item::ChildExistsWithName(const QString &name)
{
  return ChildExistsWithNameInternal(name, this);
}

void Item::NameChangedEvent(const QString &)
{
}

bool Item::ChildExistsWithNameInternal(const QString &name, Item *folder)
{
  // Loop through all children
  for (int i=0;i<folder->child_count();i++) {
    Item* child = folder->child(i);

    // If this child has the same name, return true
    if (child->name() == name) {
      return true;
    } else if (child->CanHaveChildren()) {
      // If the child has children, run function recursively on this item
      if (ChildExistsWithNameInternal(name, child)) {
        // If it returns true, we've found a child so we can return now
        return true;
      }
    }
  }

  return false;
}

OLIVE_NAMESPACE_EXIT