/*
  ==============================================================================

   This file is part of the JUCE 6 technical preview.
   Copyright (c) 2020 - Raw Material Software Limited

   You may use this code under the terms of the GPL v3
   (see www.gnu.org/licenses).

   For this technical preview, this file is not subject to commercial licensing.

   JUCE IS PROVIDED "AS IS" WITHOUT ANY WARRANTY, AND ALL WARRANTIES, WHETHER
   EXPRESSED OR IMPLIED, INCLUDING MERCHANTABILITY AND FITNESS FOR PURPOSE, ARE
   DISCLAIMED.

  ==============================================================================
*/

#pragma once


//==============================================================================
struct ProjectSettingsComponent  : public Component,
                                   private ChangeListener
{
    ProjectSettingsComponent (Project& p)
        : project (p),
          group (project.getProjectFilenameRootString(),
                 Icon (getIcons().settings, Colours::transparentBlack))
    {
        addAndMakeVisible (group);

        updatePropertyList();
        project.addChangeListener (this);
    }

    ~ProjectSettingsComponent() override
    {
        project.removeChangeListener (this);
    }

    void resized() override
    {
        group.updateSize (12, 0, getWidth() - 24);
        group.setBounds (getLocalBounds().reduced (12, 0));
    }

    void updatePropertyList()
    {
        PropertyListBuilder props;
        project.createPropertyEditors (props);
        group.setProperties (props);
        group.setName ("Project Settings");

        lastProjectType = project.getProjectTypeString();
        parentSizeChanged();
    }

    void changeListenerCallback (ChangeBroadcaster*) override
    {
        if (lastProjectType != project.getProjectTypeString())
            updatePropertyList();
    }

    void parentSizeChanged() override
    {
        auto width = jmax (550, getParentWidth());
        auto y = group.updateSize (12, 0, width - 12);

        y = jmax (getParentHeight(), y);

        setSize (width, y);
    }

    Project& project;
    var lastProjectType;
    PropertyGroupComponent group;

    JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (ProjectSettingsComponent)
};

//==============================================================================
struct FileTreePanel   : public TreePanelBase
{
    FileTreePanel (Project& p)
        : TreePanelBase (&p, "fileTreeState")
    {
        tree.setMultiSelectEnabled (true);
        setRoot (new TreeItemTypes::GroupItem (p.getMainGroup()));
        tree.setRootItemVisible (false);
    }

    void updateMissingFileStatuses()
    {
        if (auto* p = dynamic_cast<TreeItemTypes::FileTreeItemBase*> (rootItem.get()))
            p->checkFileStatus();
    }
};

struct ModuleTreePanel    : public TreePanelBase
{
    ModuleTreePanel (Project& p)
        : TreePanelBase (&p, "moduleTreeState")
    {
        tree.setMultiSelectEnabled (false);
        setRoot (new TreeItemTypes::EnabledModulesItem (p));
        tree.setRootItemVisible (false);
    }
};

struct ExportersTreePanel    : public TreePanelBase
{
    ExportersTreePanel (Project& p)
        : TreePanelBase (&p, "exportersTreeState")
    {
        tree.setMultiSelectEnabled (false);
        setRoot (new TreeItemTypes::ExportersTreeRoot (p));
        tree.setRootItemVisible (false);
    }
};

//==============================================================================
class ProjectTab    : public Component,
                      private ChangeListener
{
public:
    ProjectTab (Project* p)
        : project (p)
    {
        addAndMakeVisible (concertinaPanel);
        buildConcertina();
    }

    ~ProjectTab() override
    {
        getFileTreePanel()->saveOpenness();
        getModuleTreePanel()->saveOpenness();
        getExportersTreePanel()->saveOpenness();
    }

    void paint (Graphics& g) override
    {
        g.fillAll (findColour (secondaryBackgroundColourId));
    }

    void resized() override
    {
        concertinaPanel.setBounds (getLocalBounds().withTrimmedBottom (3));
    }

    TreePanelBase* getTreeWithSelectedItems()
    {
        for (auto i = concertinaPanel.getNumPanels() - 1; i >= 0; --i)
        {
            if (auto* treeComponent = dynamic_cast<ConcertinaTreeComponent*> (concertinaPanel.getPanel (i)))
            {
                if (auto* base = treeComponent->getTree())
                    if (base->tree.getNumSelectedItems() != 0)
                        return base;
            }
        }

        return nullptr;
    }

    FileTreePanel* getFileTreePanel()
    {
        if (auto* panel = dynamic_cast<ConcertinaTreeComponent*> (concertinaPanel.getPanel (0)))
            return dynamic_cast<FileTreePanel*> (panel->getTree());

        return nullptr;
    }

    ModuleTreePanel* getModuleTreePanel()
    {
        if (auto* panel = dynamic_cast<ConcertinaTreeComponent*> (concertinaPanel.getPanel (1)))
            return dynamic_cast<ModuleTreePanel*> (panel->getTree());

        return nullptr;
    }

    ExportersTreePanel* getExportersTreePanel()
    {
        if (auto* panel = dynamic_cast<ConcertinaTreeComponent*> (concertinaPanel.getPanel (2)))
            return dynamic_cast<ExportersTreePanel*> (panel->getTree());

        return nullptr;
    }

    void showPanel (int panelIndex)
    {
        jassert (isPositiveAndBelow (panelIndex, concertinaPanel.getNumPanels()));

        concertinaPanel.expandPanelFully (concertinaPanel.getPanel (panelIndex), true);
    }

    void setPanelHeightProportion (int panelIndex, float prop)
    {
        jassert (isPositiveAndBelow (panelIndex, concertinaPanel.getNumPanels()));

        concertinaPanel.setPanelSize (concertinaPanel.getPanel (panelIndex),
                                      roundToInt (prop * (concertinaPanel.getHeight() - 90)), false);
    }

    float getPanelHeightProportion (int panelIndex)
    {
        jassert (isPositiveAndBelow (panelIndex, concertinaPanel.getNumPanels()));

        return ((float) (concertinaPanel.getPanel (panelIndex)->getHeight()) / (concertinaPanel.getHeight() - 90));
    }

private:
    ConcertinaPanel concertinaPanel;
    OwnedArray<ConcertinaHeader> headers;
    Project* project = nullptr;

    //==============================================================================
    void changeListenerCallback (ChangeBroadcaster* source) override
    {
        if (auto* header = dynamic_cast<ConcertinaHeader*> (source))
        {
            auto index = headers.indexOf (header);
            concertinaPanel.expandPanelFully (concertinaPanel.getPanel (index), true);
        }
    }

    void buildConcertina()
    {
        for (auto i = concertinaPanel.getNumPanels() - 1; i >= 0 ; --i)
            concertinaPanel.removePanel (concertinaPanel.getPanel (i));

        headers.clear();

        if (project != nullptr)
        {
            concertinaPanel.addPanel (0, new ConcertinaTreeComponent (new FileTreePanel (*project), true, false, true), true);
            concertinaPanel.addPanel (1, new ConcertinaTreeComponent (new ModuleTreePanel (*project), true, true), true);
            concertinaPanel.addPanel (2, new ConcertinaTreeComponent (new ExportersTreePanel (*project), true), true);
        }

        headers.add (new ConcertinaHeader ("File explorer", getIcons().fileExplorer));
        headers.add (new ConcertinaHeader ("Modules",       getIcons().modules));
        headers.add (new ConcertinaHeader ("Exporters",     getIcons().exporter));

        for (int i = 0; i < concertinaPanel.getNumPanels(); ++i)
        {
            auto* p = concertinaPanel.getPanel (i);
            auto* h = headers.getUnchecked (i);
            p->addMouseListener (this, true);

            h->addChangeListener (this);
            h->yPosition = i * 30;

            concertinaPanel.setCustomPanelHeader (p, h, false);
            concertinaPanel.setPanelHeaderSize (p, 30);
        }
    }

    void mouseDown (const MouseEvent& e) override
    {
        for (auto i = concertinaPanel.getNumPanels() - 1; i >= 0; --i)
        {
            auto* p = concertinaPanel.getPanel (i);

            if (! (p->isParentOf (e.eventComponent)))
            {
                auto* base = dynamic_cast<TreePanelBase*> (p);

                if (base == nullptr)
                    base = dynamic_cast<ConcertinaTreeComponent*> (p)->getTree();

                if (base != nullptr)
                    base->tree.clearSelectedItems();
            }
        }
    }

    JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (ProjectTab)
};