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

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

   JUCE is an open source library subject to commercial or open-source
   licensing.

   By using JUCE, you agree to the terms of both the JUCE 7 End-User License
   Agreement and JUCE Privacy Policy.

   End User License Agreement: www.juce.com/juce-7-licence
   Privacy Policy: www.juce.com/juce-privacy-policy

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

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

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

#include "../Application/jucer_Headers.h"
#include "jucer_JucerDocument.h"

//==============================================================================
BinaryResources& BinaryResources::operator= (const BinaryResources& other)
{
    for (auto* r : other.resources)
        add (r->name, r->originalFilename, r->data);

    return *this;
}

void BinaryResources::changed()
{
    if (document != nullptr)
    {
        document->changed();
        document->refreshAllPropertyComps();
    }
}

//==============================================================================
void BinaryResources::clear()
{
    if (resources.size() > 0)
    {
        resources.clear();
        changed();
    }
}

StringArray BinaryResources::getResourceNames() const
{
    StringArray s;

    for (auto* r : resources)
        s.add (r->name);

    return s;
}

BinaryResources::BinaryResource* BinaryResources::findResource (const String& name) const noexcept
{
    for (auto* r : resources)
        if (r->name == name)
            return r;

    return nullptr;
}

const BinaryResources::BinaryResource* BinaryResources::getResource (const String& name) const
{
    return findResource (name);
}

const BinaryResources::BinaryResource* BinaryResources::getResourceForFile (const File& file) const
{
    for (auto* r : resources)
        if (r->originalFilename == file.getFullPathName())
            return r;

    return nullptr;
}

bool BinaryResources::add (const String& name, const File& file)
{
    MemoryBlock mb;

    if (! file.loadFileAsData (mb))
        return false;

    add (name, file.getFullPathName(), mb);
    return true;
}

void BinaryResources::add (const String& name, const String& originalFileName, const MemoryBlock& data)
{
    auto* r = findResource (name);

    if (r == nullptr)
    {
        resources.add (r = new BinaryResource());
        r->name = name;
    }

    r->originalFilename = originalFileName;
    r->data = data;
    r->drawable.reset();

    changed();
}

bool BinaryResources::reload (const int index)
{
    return resources[index] != nullptr
            && add (resources [index]->name,
                    File (resources [index]->originalFilename));
}

void BinaryResources::browseForResource (const String& title,
                                         const String& wildcard,
                                         const File& fileToStartFrom,
                                         const String& resourceToReplace,
                                         std::function<void (String)> callback)
{
    chooser = std::make_unique<FileChooser> (title, fileToStartFrom, wildcard);
    auto flags = FileBrowserComponent::openMode | FileBrowserComponent::canSelectFiles;

    chooser->launchAsync (flags, [safeThis = WeakReference<BinaryResources> { this },
                                  resourceToReplace,
                                  callback] (const FileChooser& fc)
    {
        if (safeThis == nullptr)
        {
            if (callback != nullptr)
                callback ({});

            return;
        }

        const auto result = fc.getResult();

        auto resourceName = [safeThis, result, resourceToReplace]() -> String
        {
            if (result == File())
                return {};

            if (resourceToReplace.isEmpty())
                return safeThis->findUniqueName (result.getFileName());

            return resourceToReplace;
        }();

        if (resourceName.isNotEmpty())
        {
            if (! safeThis->add (resourceName, result))
            {
                AlertWindow::showMessageBoxAsync (MessageBoxIconType::WarningIcon,
                                                  TRANS("Adding Resource"),
                                                  TRANS("Failed to load the file!"));

                resourceName.clear();
            }
        }

        if (callback != nullptr)
            callback (resourceName);
    });
}

String BinaryResources::findUniqueName (const String& rootName) const
{
    auto nameRoot = build_tools::makeValidIdentifier (rootName, true, true, false);
    auto name = nameRoot;

    auto names = getResourceNames();
    int suffix = 1;

    while (names.contains (name))
        name = nameRoot + String (++suffix);

    return name;
}

void BinaryResources::remove (int i)
{
    if (resources[i] != nullptr)
    {
        resources.remove (i);
        changed();
    }
}

const Drawable* BinaryResources::getDrawable (const String& name) const
{
    if (auto* res = const_cast<BinaryResources::BinaryResource*> (getResource (name)))
    {
        if (res->drawable == nullptr && res->data.getSize() > 0)
            res->drawable = Drawable::createFromImageData (res->data.getData(),
                                                           res->data.getSize());

        return res->drawable.get();
    }

    return nullptr;
}

Image BinaryResources::getImageFromCache (const String& name) const
{
    if (auto* res = getResource (name))
        if (res->data.getSize() > 0)
            return ImageCache::getFromMemory (res->data.getData(), (int) res->data.getSize());

    return {};
}

void BinaryResources::loadFromCpp (const File& cppFileLocation, const String& cppFile)
{
    StringArray cpp;
    cpp.addLines (cppFile);

    clear();

    for (int i = 0; i < cpp.size(); ++i)
    {
        if (cpp[i].contains ("JUCER_RESOURCE:"))
        {
            StringArray tokens;
            tokens.addTokens (cpp[i].fromFirstOccurrenceOf (":", false, false), ",", "\"'");
            tokens.trim();
            tokens.removeEmptyStrings();

            auto resourceName = tokens[0];
            auto resourceSize = tokens[1].getIntValue();
            auto originalFileName = cppFileLocation.getSiblingFile (tokens[2].unquoted()).getFullPathName();

            jassert (resourceName.isNotEmpty() && resourceSize > 0);

            if (resourceName.isNotEmpty() && resourceSize > 0)
            {
                auto firstLine = i;

                while (i < cpp.size())
                    if (cpp [i++].contains ("}"))
                        break;

                auto dataString = cpp.joinIntoString (" ", firstLine, i - firstLine)
                                     .fromFirstOccurrenceOf ("{", false, false);

                MemoryOutputStream out;
                String::CharPointerType t (dataString.getCharPointer());
                int n = 0;

                while (! t.isEmpty())
                {
                    auto c = t.getAndAdvance();

                    if (c >= '0' && c <= '9')
                    {
                        n = n * 10 + (int) (c - '0');
                    }
                    else if (c == ',')
                    {
                        out.writeByte ((char) n);
                        n = 0;
                    }
                    else if (c == '}')
                    {
                        break;
                    }
                }

                jassert (resourceSize < (int) out.getDataSize() && resourceSize > (int) out.getDataSize() - 2);

                MemoryBlock mb (out.getData(), out.getDataSize());
                mb.setSize ((size_t) resourceSize);

                add (resourceName, originalFileName, mb);
            }
        }
    }
}

//==============================================================================
void BinaryResources::fillInGeneratedCode (GeneratedCode& code) const
{
    if (resources.size() > 0)
    {
        code.publicMemberDeclarations << "// Binary resources:\n";

        MemoryOutputStream defs;

        defs << "//==============================================================================\n";
        defs << "// Binary resources - be careful not to edit any of these sections!\n\n";

        for (auto* r : resources)
        {
            code.publicMemberDeclarations
                << "static const char* "
                << r->name
                << ";\nstatic const int "
                << r->name
                << "Size;\n";

            auto name = r->name;
            auto& mb = r->data;

            defs << "// JUCER_RESOURCE: " << name << ", " << (int) mb.getSize()
                << ", \""
                << File (r->originalFilename)
                    .getRelativePathFrom (code.document->getCppFile())
                    .replaceCharacter ('\\', '/')
                << "\"\n";

            String line1;
            line1 << "static const unsigned char resource_"
                  << code.className << "_" << name << "[] = { ";

            defs << line1;

            int charsOnLine = line1.length();

            for (size_t j = 0; j < mb.getSize(); ++j)
            {
                auto num = (int) (unsigned char) mb[j];
                defs << num << ',';

                charsOnLine += 2;
                if (num >= 10)   ++charsOnLine;
                if (num >= 100)  ++charsOnLine;

                if (charsOnLine >= 200)
                {
                    charsOnLine = 0;
                    defs << '\n';
                }
            }

            defs
              << "0,0};\n\n"
                 "const char* " << code.className << "::" << name
              << " = (const char*) resource_" << code.className << "_" << name
              << ";\nconst int "
              << code.className << "::" << name << "Size = "
              << (int) mb.getSize()
              << ";\n\n";
        }

        code.staticMemberDefinitions << defs.toString();
    }
}
