#include "pch.h"
#include "log.h"
#include "node_panel_layer.h"

Node* NodeLayer::clone_instantiate() const
{
    return new NodeLayer();
}

void NodeLayer::clone_children(Node* dest) const
{
    NodeBorder::clone_children(dest);
    NodeLayer* n = static_cast<NodeLayer*>(dest);
    n->m_label = n->find<NodeText>("label");
    n->m_visibility = n->find<NodeCheckBox>("cb");
}

void NodeLayer::clone_copy(Node* dest) const
{
    NodeBorder::clone_copy(dest);
    NodeLayer* n = (NodeLayer*)dest;
    n->m_selected = m_selected;
    n->m_label_text = m_label_text;
}

void NodeLayer::init()
{
    const auto& m_template = (NodeBorder*)init_template("tpl-layer");
    m_color = m_template->m_color;
    m_border_color = m_template->m_border_color;
    m_thinkness = m_template->m_thinkness;
    m_label = find<NodeText>("label");
    m_visibility = find<NodeCheckBox>("cb");
    m_opacity = find<NodeSliderH>("sl-opacity");
}

void NodeLayer::parse_attributes(kAttribute ka, const tinyxml2::XMLAttribute* attr)
{
    NodeBorder::parse_attributes(ka, attr);
    switch (ka)
    {
    case kAttribute::Text:
        m_label_text = attr->Value();
        break;
    case kAttribute::Selected:
        m_selected = attr->BoolValue();
    default:
        break;
    }
}

void NodeLayer::loaded()
{
    NodeBorder::loaded();
    if (!m_label_text.empty())
        m_label->set_text(m_label_text.c_str());
    m_opacity->on_value_changed = [this](Node*, float value) {
        if (on_opacity_changed)
            on_opacity_changed(this, value);
    };
    m_visibility->on_value_changed = [this](Node*, bool checked) {
        if (on_visibility_changed)
            on_visibility_changed(this, checked);
    };
}

kEventResult NodeLayer::handle_event(Event* e)
{
    NodeBorder::handle_event(e);
    switch (e->m_type)
    {
    case kEventType::MouseEnter:
        break;
    case kEventType::MouseLeave:
        break;
    case kEventType::MouseDownL:
        m_selected = true;
        if (on_selected)
            on_selected(this);
        if (on_highlight)
            on_highlight(this, true);
        mouse_capture();
        break;
    case kEventType::MouseUpL:
        if (on_highlight)
            on_highlight(this, false);
        mouse_release();
        break;
    default:
        return kEventResult::Available;
        break;
    }
    return kEventResult::Consumed;
}

void NodeLayer::draw()
{
    auto c = m_selected ? m_color_selected : m_color_normal;
    m_thinkness = m_selected ? 1.f : 0.f;
    m_color = m_mouse_inside ? m_color_hover : c;
    NodeBorder::draw();
}

void NodeLayer::set_name(const char* s)
{
    m_label_text = s;
    m_label->set_text(s);
}
Node* NodePanelLayer::clone_instantiate() const
{
    return new NodePanelLayer();
}

void NodePanelLayer::init()
{
    LOG("NodePanelLayer::init");
    init_template("tpl-panel-layers");
    LOG("template initted");
    m_layers_container = find<NodeBorder>("layers-container");
    LOG("template container found");
    //         for (int i = 0; i < 1; i++)
    //         {
    //             LOG("add layer");
    //             add_layer();
    //         }
    LOG("find components");
    //         m_current_layer = m_layers[0];
    //         m_layers[0]->m_selected = true;
    btn_add = find<NodeButtonCustom>("btn-add");
    btn_remove = find<NodeButtonCustom>("btn-remove");
    btn_up = find<NodeButtonCustom>("btn-up");
    btn_down = find<NodeButtonCustom>("btn-down");
    LOG("attach events");
    btn_add->on_click = [this](Node*) {
        add_layer();
        if (on_layer_add)
            on_layer_add(this);
    };
    btn_remove->on_click = [this](Node*) {
        if (m_layers.size() == 1)
            return; // dont' delete the last layer
        remove_layer(m_current_layer);
    };
    btn_up->on_click = [this](Node*) {
        int old_idx = m_layers_container->get_child_index(m_current_layer);
        m_layers_container->move_child_offset(m_current_layer, -1);
        int new_idx = m_layers_container->get_child_index(m_current_layer);
        if (on_layer_order && old_idx != new_idx)
        {
            on_layer_order(this, old_idx, new_idx);
        }
    };
    btn_down->on_click = [this](Node*) {
        int old_idx = m_layers_container->get_child_index(m_current_layer);
        m_layers_container->move_child_offset(m_current_layer, +1);
        int new_idx = m_layers_container->get_child_index(m_current_layer);
        if (on_layer_order && old_idx != new_idx)
        {
            on_layer_order(this, old_idx, new_idx);
        }
    };
    LOG("done init");
}

void NodePanelLayer::add_layer(const char* name)
{
    NodeLayer* l = new NodeLayer;
    m_layers_container->add_child(l);
    l->init();
    l->create();
    l->loaded();
    l->set_name(name);
    l->on_selected = std::bind(&NodePanelLayer::handle_layer_selected, this, std::placeholders::_1);
    l->on_opacity_changed = std::bind(&NodePanelLayer::handle_layer_opacity, this, std::placeholders::_1, std::placeholders::_2);
    l->on_visibility_changed = std::bind(&NodePanelLayer::handle_layer_visibility, this, std::placeholders::_1, std::placeholders::_2);
    l->on_highlight = std::bind(&NodePanelLayer::handle_layer_highlight, this, std::placeholders::_1, std::placeholders::_2);
    if (m_current_layer)
        m_current_layer->m_selected = false;
    m_current_layer = l;
    m_current_layer->m_selected = true;
    m_layers.push_back(l);
}

void NodePanelLayer::add_layer()
{
    static char s[64];
    sprintf(s, "Layer-%d", id_counter++);
    add_layer(s);
}

NodeLayer* NodePanelLayer::get_layer_at(int index)
{
    return static_cast<NodeLayer*>(m_layers_container->get_child_at(index));
}

void NodePanelLayer::remove_layer(NodeLayer* layer)
{
    auto it = std::find(m_layers.begin(), m_layers.end(), m_current_layer);
    auto i = m_layers_container->get_child_index(m_current_layer);
    int old_idx = (int)std::distance(m_layers.begin(), it);
    m_layers_container->remove_child(m_current_layer);
    m_layers.erase(it);
    i = std::min<int>(i, (int)m_layers.size() - 1);
    m_current_layer = m_layers[i];
    m_current_layer->m_selected = true;
    if (on_layer_delete)
        on_layer_delete(this, old_idx);
    if (on_layer_change)
        on_layer_change(this, -1, i);
}

void NodePanelLayer::handle_layer_opacity(NodeLayer* target, float value)
{
    if (on_layer_opacity_changed)
        on_layer_opacity_changed(this, m_layers_container->get_child_index(target), value);
}

void NodePanelLayer::handle_layer_highlight(NodeLayer* target, bool highlight)
{
    if (on_layer_highlight_changed)
        on_layer_highlight_changed(this, m_layers_container->get_child_index(target), highlight);
}

void NodePanelLayer::handle_layer_visibility(NodeLayer* target, bool visible)
{
    if (on_layer_visibility_changed)
        on_layer_visibility_changed(this, m_layers_container->get_child_index(target), visible);
}

void NodePanelLayer::handle_layer_selected(NodeLayer* target)
{
    if (m_current_layer)
        m_current_layer->m_selected = false;
    m_current_layer = target;
    m_current_layer->m_selected = true;
    if (on_layer_change)
        on_layer_change(this, -1, m_layers_container->get_child_index(m_current_layer));
}

void NodePanelLayer::clear()
{
    m_layers_container->remove_all_children();
    m_layers.clear();
    m_current_layer = nullptr;
}