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

   This file is part of the JUCE 7 technical preview.
   Copyright (c) 2022 - Raw Material Software Limited

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

   For the technical preview this file cannot be licensed commercially.

   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

#include "../../ProjectSaving/jucer_ProjectExporter.h"
#include "../../Utility/UI/PropertyComponents/jucer_FilePathPropertyComponent.h"
#include "../../Utility/Helpers/jucer_ValueTreePropertyWithDefaultWrapper.h"

#include "jucer_NewProjectWizard.h"

//==============================================================================
class ItemHeader  : public Component
{
public:
    ItemHeader (StringRef name, StringRef description, const char* iconSvgData)
        : nameLabel ({}, name),
          descriptionLabel ({}, description),
          icon (makeIcon (iconSvgData))
    {
        addAndMakeVisible (nameLabel);
        nameLabel.setFont (18.0f);
        nameLabel.setMinimumHorizontalScale (1.0f);

        addAndMakeVisible (descriptionLabel);
        descriptionLabel.setMinimumHorizontalScale (1.0f);
    }

    void resized() override
    {
        auto bounds = getLocalBounds();

        auto topSlice = bounds.removeFromTop (50);
        iconBounds = topSlice.removeFromRight (75);
        nameLabel.setBounds (topSlice);

        bounds.removeFromTop (10);
        descriptionLabel.setBounds (bounds.removeFromTop (50));
        bounds.removeFromTop (20);
    }

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

        if (icon != nullptr)
            icon->drawWithin (g, iconBounds.toFloat(), RectanglePlacement::centred, 1.0f);
    }

private:
    static std::unique_ptr<Drawable> makeIcon (const char* iconSvgData)
    {
        if (auto svg = XmlDocument::parse (iconSvgData))
            return Drawable::createFromSVG (*svg);

        return {};
    }

    Label nameLabel, descriptionLabel;

    Rectangle<int> iconBounds;
    std::unique_ptr<Drawable> icon;

    //==============================================================================
    JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (ItemHeader)
};

//==============================================================================
class TemplateComponent  : public Component
{
public:
    TemplateComponent (const NewProjectTemplates::ProjectTemplate& temp,
                       std::function<void (std::unique_ptr<Project>)>&& createdCallback)
        : projectTemplate (temp),
          projectCreatedCallback (std::move (createdCallback)),
          header (projectTemplate.displayName, projectTemplate.description, projectTemplate.icon)
    {
        createProjectButton.onClick = [this]
        {
            chooser = std::make_unique<FileChooser> ("Save Project", NewProjectWizard::getLastWizardFolder());
            auto browserFlags = FileBrowserComponent::openMode | FileBrowserComponent::canSelectDirectories;

            chooser->launchAsync (browserFlags, [this] (const FileChooser& fc)
            {
                auto dir = fc.getResult();

                if (dir == File{})
                    return;

                SafePointer<TemplateComponent> safeThis { this };
                NewProjectWizard::createNewProject (projectTemplate,
                                                    dir.getChildFile (projectNameValue.get().toString()),
                                                    projectNameValue.get(),
                                                    modulesValue.get(),
                                                    exportersValue.get(),
                                                    fileOptionsValue.get(),
                                                    modulePathValue.getCurrentValue(),
                                                    modulePathValue.getWrappedValueTreePropertyWithDefault().isUsingDefault(),
                                                    [safeThis, dir] (std::unique_ptr<Project> project)
                {
                    if (safeThis == nullptr)
                        return;

                    safeThis->projectCreatedCallback (std::move (project));
                    getAppSettings().lastWizardFolder = dir;
                });
            });
        };

        addAndMakeVisible (createProjectButton);
        addAndMakeVisible (header);

        modulePathValue.init ({ settingsTree, Ids::defaultJuceModulePath, nullptr },
                              getAppSettings().getStoredPath (Ids::defaultJuceModulePath, TargetOS::getThisOS()),
                              TargetOS::getThisOS());

        panel.addProperties (buildPropertyList(), 2);
        addAndMakeVisible (panel);
    }

    void resized() override
    {
        auto bounds = getLocalBounds().reduced (10);

        header.setBounds (bounds.removeFromTop (150));
        createProjectButton.setBounds (bounds.removeFromBottom (30).removeFromRight (150));
        bounds.removeFromBottom (5);

        panel.setBounds (bounds);
    }

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

private:
    NewProjectTemplates::ProjectTemplate projectTemplate;

    std::unique_ptr<FileChooser> chooser;
    std::function<void (std::unique_ptr<Project>)> projectCreatedCallback;

    ItemHeader header;
    TextButton createProjectButton { "Create Project..." };

    ValueTree settingsTree { "NewProjectSettings" };

    ValueTreePropertyWithDefault projectNameValue { settingsTree, Ids::name,          nullptr, "NewProject" },
                                 modulesValue     { settingsTree, Ids::dependencies_, nullptr, projectTemplate.requiredModules, "," },
                                 exportersValue   { settingsTree, Ids::exporters,     nullptr, StringArray (ProjectExporter::getCurrentPlatformExporterTypeInfo().identifier.toString()), "," },
                                 fileOptionsValue { settingsTree, Ids::file,          nullptr, NewProjectTemplates::getVarForFileOption (projectTemplate.defaultFileOption) };

    ValueTreePropertyWithDefaultWrapper modulePathValue;

    PropertyPanel panel;

    //==============================================================================
    PropertyComponent* createProjectNamePropertyComponent()
    {
        return new TextPropertyComponent (projectNameValue, "Project Name", 1024, false);
    }

    PropertyComponent* createModulesPropertyComponent()
    {
        Array<var> moduleVars;
        var requiredModules;

        for (auto& m : getJUCEModules())
        {
            moduleVars.add (m);

            if (projectTemplate.requiredModules.contains (m))
                requiredModules.append (m);
        }

        modulesValue = requiredModules;

        return new MultiChoicePropertyComponent (modulesValue, "Modules",
                                                 getJUCEModules(), moduleVars);
    }

    PropertyComponent* createModulePathPropertyComponent()
    {
        return new FilePathPropertyComponent (modulePathValue.getWrappedValueTreePropertyWithDefault(), "Path to Modules", true);
    }

    PropertyComponent* createExportersPropertyValue()
    {
        Array<var> exporterVars;
        StringArray exporterNames;

        for (auto& exporterTypeInfo : ProjectExporter::getExporterTypeInfos())
        {
            exporterVars.add (exporterTypeInfo.identifier.toString());
            exporterNames.add (exporterTypeInfo.displayName);
        }

        return new MultiChoicePropertyComponent (exportersValue, "Exporters", exporterNames, exporterVars);
    }

    PropertyComponent* createFileCreationOptionsPropertyComponent()
    {
        Array<var> optionVars;
        StringArray optionStrings;

        for (auto& opt : projectTemplate.fileOptionsAndFiles)
        {
            optionVars.add    (NewProjectTemplates::getVarForFileOption (opt.first));
            optionStrings.add (NewProjectTemplates::getStringForFileOption (opt.first));
        }

        return new ChoicePropertyComponent (fileOptionsValue, "File Creation Options", optionStrings, optionVars);
    }

    Array<PropertyComponent*> buildPropertyList()
    {
        PropertyListBuilder builder;

        builder.add (createProjectNamePropertyComponent());
        builder.add (createModulesPropertyComponent());
        builder.add (createModulePathPropertyComponent());
        builder.add (createExportersPropertyValue());

        if (! projectTemplate.fileOptionsAndFiles.empty())
            builder.add (createFileCreationOptionsPropertyComponent());

        return builder.components;
    }

    //==============================================================================
    JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (TemplateComponent)
};

//==============================================================================
class ExampleComponent  : public Component
{
public:
    ExampleComponent (const File& f, std::function<void (const File&)> selectedCallback)
        : exampleFile (f),
          metadata (parseJUCEHeaderMetadata (exampleFile)),
          exampleSelectedCallback (std::move (selectedCallback)),
          header (metadata[Ids::name].toString(), metadata[Ids::description].toString(), BinaryData::background_logo_svg),
          codeViewer (doc, &cppTokeniser)
    {
        setTitle (exampleFile.getFileName());
        setFocusContainerType (FocusContainerType::focusContainer);

        addAndMakeVisible (header);

        openExampleButton.onClick = [this] { exampleSelectedCallback (exampleFile); };
        addAndMakeVisible (openExampleButton);

        setupCodeViewer();
        addAndMakeVisible (codeViewer);
    }

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

    void resized() override
    {
        auto bounds = getLocalBounds().reduced (10);

        header.setBounds (bounds.removeFromTop (125));
        openExampleButton.setBounds (bounds.removeFromBottom (30).removeFromRight (150));
        codeViewer.setBounds (bounds);
    }

private:
    void setupCodeViewer()
    {
        auto fileString = exampleFile.loadFileAsString();

        doc.replaceAllContent (fileString);

        codeViewer.setScrollbarThickness (6);
        codeViewer.setReadOnly (true);
        codeViewer.setTitle ("Code");
        getAppSettings().appearance.applyToCodeEditor (codeViewer);

        codeViewer.scrollToLine (findBestLineToScrollToForClass (StringArray::fromLines (fileString),
                                                                 metadata[Ids::name].toString(),
                                                                 metadata[Ids::type] == "AudioProcessor"));
    }

    //==============================================================================
    File exampleFile;
    var metadata;

    std::function<void (const File&)> exampleSelectedCallback;

    ItemHeader header;

    CPlusPlusCodeTokeniser cppTokeniser;
    CodeDocument doc;
    CodeEditorComponent codeViewer;

    TextButton openExampleButton { "Open Example..." };

    //==============================================================================
    JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (ExampleComponent)
};