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

   This file is part of the JUCE 6 technical preview.
   Copyright (c) 2017 - ROLI Ltd.

   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.

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

#include "../Application/jucer_Headers.h"
#include "../ProjectSaving/jucer_ProjectSaver.h"
#include "../ProjectSaving/jucer_ProjectExport_Xcode.h"
#include "../Application/jucer_Application.h"

//==============================================================================
ModuleDescription::ModuleDescription (const File& folder)
   : moduleFolder (folder),
     moduleInfo (parseJUCEHeaderMetadata (getHeader()))
{
}

File ModuleDescription::getHeader() const
{
    if (moduleFolder != File())
    {
        static const char* extensions[] = { ".h", ".hpp", ".hxx" };

        for (auto e : extensions)
        {
            auto header = moduleFolder.getChildFile (moduleFolder.getFileName() + e);

            if (header.existsAsFile())
                return header;
        }
    }

    return {};
}

StringArray ModuleDescription::getDependencies() const
{
    auto moduleDependencies = StringArray::fromTokens (moduleInfo ["dependencies"].toString(), " \t;,", "\"'");
    moduleDependencies.trim();
    moduleDependencies.removeEmptyStrings();

    return moduleDependencies;
}

//==============================================================================
static bool tryToAddModuleFromFolder (const File& path, AvailableModuleList::ModuleIDAndFolderList& list)
{
    ModuleDescription m (path);

    if (m.isValid())
    {
        list.push_back ({ m.getID(), path });
        return true;
    }

    return false;
}

static void addAllModulesInSubfoldersRecursively (const File& path, int depth, AvailableModuleList::ModuleIDAndFolderList& list)
{
    if (depth > 0)
    {
        for (const auto& iter : RangedDirectoryIterator (path, false, "*", File::findDirectories))
        {
            if (auto* job = ThreadPoolJob::getCurrentThreadPoolJob())
                if (job->shouldExit())
                    return;

            auto childPath = iter.getFile();

            if (! tryToAddModuleFromFolder (childPath, list))
                addAllModulesInSubfoldersRecursively (childPath, depth - 1, list);
        }
    }
}

static void addAllModulesInFolder (const File& path, AvailableModuleList::ModuleIDAndFolderList& list)
{
    if (! tryToAddModuleFromFolder (path, list))
    {
        static constexpr int subfolders = 3;
        addAllModulesInSubfoldersRecursively (path, subfolders, list);
    }
}

struct ModuleScannerJob  : public ThreadPoolJob
{
    ModuleScannerJob (const Array<File>& paths,
                      std::function<void (const AvailableModuleList::ModuleIDAndFolderList&)>&& callback)
        : ThreadPoolJob ("ModuleScannerJob"),
          pathsToScan (paths),
          completionCallback (std::move (callback))
    {
    }

    JobStatus runJob() override
    {
        AvailableModuleList::ModuleIDAndFolderList list;

        for (auto& p : pathsToScan)
            addAllModulesInFolder (p, list);

        if (! shouldExit())
        {
            std::sort (list.begin(), list.end(), [] (const AvailableModuleList::ModuleIDAndFolder& m1,
                                                     const AvailableModuleList::ModuleIDAndFolder& m2)
            {
                return m1.first.compareIgnoreCase (m2.first) < 0;
            });

            completionCallback (list);
        }

        return jobHasFinished;
    }

    Array<File> pathsToScan;
    std::function<void (const AvailableModuleList::ModuleIDAndFolderList&)> completionCallback;
};

ThreadPoolJob* AvailableModuleList::createScannerJob (const Array<File>& paths)
{
    return new ModuleScannerJob (paths, [this] (AvailableModuleList::ModuleIDAndFolderList scannedModuleList)
                                        {
                                            {
                                                const ScopedLock swapLock (lock);
                                                moduleList.swap (scannedModuleList);
                                            }

                                            listeners.call ([] (Listener& l) { MessageManager::callAsync ([&] { l.availableModulesChanged(); }); });
                                        });
}

void AvailableModuleList::removePendingAndAddJob (ThreadPoolJob* jobToAdd)
{
    scanPool.removeAllJobs (false, 100);
    scanPool.addJob (jobToAdd, true);
}

void AvailableModuleList::scanPaths (const Array<File>& paths)
{
    auto* job = createScannerJob (paths);

    removePendingAndAddJob (job);
    scanPool.waitForJobToFinish (job, -1);
}

void AvailableModuleList::scanPathsAsync (const Array<File>& paths)
{
    removePendingAndAddJob (createScannerJob (paths));
}

AvailableModuleList::ModuleIDAndFolderList AvailableModuleList::getAllModules() const
{
    const ScopedLock readLock (lock);
    return moduleList;
}

AvailableModuleList::ModuleIDAndFolder AvailableModuleList::getModuleWithID (const String& id) const
{
    const ScopedLock readLock (lock);

    for (auto& mod : moduleList)
        if (mod.first == id)
            return mod;

    return {};
}

void AvailableModuleList::removeDuplicates (const ModuleIDAndFolderList& other)
{
    const ScopedLock readLock (lock);

    for (auto& m : other)
    {
        auto pos = std::find (moduleList.begin(), moduleList.end(), m);

        if (pos != moduleList.end())
            moduleList.erase (pos);
    }
}

//==============================================================================
LibraryModule::LibraryModule (const ModuleDescription& d)
    : moduleInfo (d)
{
}

void LibraryModule::writeIncludes (ProjectSaver& projectSaver, OutputStream& out)
{
    auto& project = projectSaver.project;
    auto& modules = project.getEnabledModules();

    auto moduleID = getID();

    if (modules.shouldCopyModuleFilesLocally (moduleID))
    {
        auto juceModuleFolder = moduleInfo.getFolder();

        auto localModuleFolder = project.getLocalModuleFolder (moduleID);
        localModuleFolder.createDirectory();
        projectSaver.copyFolder (juceModuleFolder, localModuleFolder);
    }

    out << "#include <" << moduleInfo.moduleFolder.getFileName() << "/"
        << moduleInfo.getHeader().getFileName()
        << ">" << newLine;
}

void LibraryModule::addSearchPathsToExporter (ProjectExporter& exporter) const
{
    auto moduleRelativePath = exporter.getModuleFolderRelativeToProject (getID());

    exporter.addToExtraSearchPaths (moduleRelativePath.getParentDirectory());

    String libDirPlatform;

    if (exporter.isLinux())
        libDirPlatform = "Linux";
    else if (exporter.isCodeBlocks() && exporter.isWindows())
        libDirPlatform = "MinGW";
    else
        libDirPlatform = exporter.getTargetFolder().getFileName();

    auto libSubdirPath = moduleRelativePath.toUnixStyle() + "/libs/" + libDirPlatform;
    auto moduleLibDir = File (exporter.getProject().getProjectFolder().getFullPathName() + "/" + libSubdirPath);

    if (moduleLibDir.exists())
        exporter.addToModuleLibPaths ({ libSubdirPath, moduleRelativePath.getRoot() });

    auto extraInternalSearchPaths = moduleInfo.getExtraSearchPaths().trim();

    if (extraInternalSearchPaths.isNotEmpty())
    {
        auto paths = StringArray::fromTokens (extraInternalSearchPaths, true);

        for (auto& path : paths)
            exporter.addToExtraSearchPaths (moduleRelativePath.getChildFile (path.unquoted()));
    }
}

void LibraryModule::addDefinesToExporter (ProjectExporter& exporter) const
{
    auto extraDefs = moduleInfo.getPreprocessorDefs().trim();

    if (extraDefs.isNotEmpty())
        exporter.getExporterPreprocessorDefsValue() = exporter.getExporterPreprocessorDefsString() + "\n" + extraDefs;
}

void LibraryModule::addCompileUnitsToExporter (ProjectExporter& exporter, ProjectSaver& projectSaver) const
{
    auto& project = exporter.getProject();
    auto& modules = project.getEnabledModules();

    auto moduleID = getID();

    auto localModuleFolder = modules.shouldCopyModuleFilesLocally (moduleID) ? project.getLocalModuleFolder (moduleID)
                                                                             : moduleInfo.getFolder();

    Array<File> compiled;
    findAndAddCompiledUnits (exporter, &projectSaver, compiled);

    if (modules.shouldShowAllModuleFilesInProject (moduleID))
        addBrowseableCode (exporter, compiled, localModuleFolder);
}

void LibraryModule::addLibsToExporter (ProjectExporter& exporter) const
{
    auto parseAndAddLibsToList = [] (StringArray& libList, const String& libs)
    {
        libList.addTokens (libs, ", ", {});
        libList.trim();
        libList.removeDuplicates (false);
    };

    auto& project = exporter.getProject();

    if (exporter.isXcode())
    {
        auto& xcodeExporter = dynamic_cast<XcodeProjectExporter&> (exporter);

        if (project.isAUPluginHost())
        {
            xcodeExporter.xcodeFrameworks.add ("CoreAudioKit");

            if (xcodeExporter.isOSX())
                xcodeExporter.xcodeFrameworks.add ("AudioUnit");
        }

        auto frameworks = moduleInfo.moduleInfo [xcodeExporter.isOSX() ? "OSXFrameworks" : "iOSFrameworks"].toString();
        xcodeExporter.xcodeFrameworks.addTokens (frameworks, ", ", {});

        parseAndAddLibsToList (xcodeExporter.xcodeLibs, moduleInfo.moduleInfo [exporter.isOSX() ? "OSXLibs" : "iOSLibs"].toString());
    }
    else if (exporter.isLinux())
    {
        parseAndAddLibsToList (exporter.linuxLibs, moduleInfo.moduleInfo ["linuxLibs"].toString());
        parseAndAddLibsToList (exporter.linuxPackages, moduleInfo.moduleInfo ["linuxPackages"].toString());
    }
    else if (exporter.isWindows())
    {
        if (exporter.isCodeBlocks())
            parseAndAddLibsToList (exporter.mingwLibs, moduleInfo.moduleInfo ["mingwLibs"].toString());
        else
            parseAndAddLibsToList (exporter.windowsLibs, moduleInfo.moduleInfo ["windowsLibs"].toString());
    }
    else if (exporter.isAndroid())
    {
        parseAndAddLibsToList (exporter.androidLibs, moduleInfo.moduleInfo ["androidLibs"].toString());
    }
}

void LibraryModule::addSettingsForModuleToExporter (ProjectExporter& exporter, ProjectSaver& projectSaver) const
{
    addSearchPathsToExporter (exporter);
    addDefinesToExporter (exporter);
    addCompileUnitsToExporter (exporter, projectSaver);
    addLibsToExporter (exporter);
}

void LibraryModule::getConfigFlags (Project& project, OwnedArray<Project::ConfigFlag>& flags) const
{
    auto header = moduleInfo.getHeader();
    jassert (header.exists());

    StringArray lines;
    header.readLines (lines);

    for (int i = 0; i < lines.size(); ++i)
    {
        auto line = lines[i].trim();

        if (line.startsWith ("/**") && line.containsIgnoreCase ("Config:"))
        {
            auto config = std::make_unique<Project::ConfigFlag>();
            config->sourceModuleID = getID();
            config->symbol = line.fromFirstOccurrenceOf (":", false, false).trim();

            if (config->symbol.length() > 2)
            {
                ++i;

                while (! (lines[i].contains ("*/") || lines[i].contains ("@see")))
                {
                    if (lines[i].trim().isNotEmpty())
                        config->description = config->description.trim() + " " + lines[i].trim();

                    ++i;
                }

                config->description = config->description.upToFirstOccurrenceOf ("*/", false, false);
                config->value = project.getConfigFlag (config->symbol);

                i += 2;

                if (lines[i].contains ("#define " + config->symbol))
                {
                    auto value = lines[i].fromFirstOccurrenceOf ("#define " + config->symbol, false, true).trim();
                    config->value.setDefault (value == "0" ? false : true);
                }

                auto currentValue = config->value.get().toString();

                if      (currentValue == "enabled")     config->value = true;
                else if (currentValue == "disabled")    config->value = false;

                flags.add (std::move (config));
            }
        }
    }
}

static void addFileWithGroups (Project::Item& group, const build_tools::RelativePath& file, const String& path)
{
    auto slash = path.indexOfChar (File::getSeparatorChar());

    if (slash >= 0)
    {
        auto topLevelGroup = path.substring (0, slash);
        auto remainingPath = path.substring (slash + 1);

        auto newGroup = group.getOrCreateSubGroup (topLevelGroup);
        addFileWithGroups (newGroup, file, remainingPath);
    }
    else
    {
        if (! group.containsChildForFile (file))
            group.addRelativeFile (file, -1, false);
    }
}

struct FileSorter
{
    static int compareElements (const File& f1, const File& f2)
    {
        return f1.getFileName().compareNatural (f2.getFileName());
    }
};

void LibraryModule::findBrowseableFiles (const File& folder, Array<File>& filesFound) const
{
    Array<File> tempList;
    FileSorter sorter;

    for (const auto& iter : RangedDirectoryIterator (folder, true, "*", File::findFiles))
        if (! iter.isHidden() && iter.getFile().hasFileExtension (browseableFileExtensions))
            tempList.addSorted (sorter, iter.getFile());

    filesFound.addArray (tempList);
}

bool LibraryModule::CompileUnit::isNeededForExporter (ProjectExporter& exporter) const
{
    if ((hasSuffix (file, "_OSX")        && ! exporter.isOSX())
     || (hasSuffix (file, "_iOS")        && ! exporter.isiOS())
     || (hasSuffix (file, "_Windows")    && ! exporter.isWindows())
     || (hasSuffix (file, "_Linux")      && ! exporter.isLinux())
     || (hasSuffix (file, "_Android")    && ! exporter.isAndroid()))
        return false;

    auto targetType = Project::getTargetTypeFromFilePath (file, false);

    if (targetType != build_tools::ProjectType::Target::unspecified && ! exporter.shouldBuildTargetType (targetType))
        return false;

    return exporter.usesMMFiles() ? isCompiledForObjC
                                  : isCompiledForNonObjC;
}

String LibraryModule::CompileUnit::getFilenameForProxyFile() const
{
    return "include_" + file.getFileName();
}

bool LibraryModule::CompileUnit::hasSuffix (const File& f, const char* suffix)
{
    auto fileWithoutSuffix = f.getFileNameWithoutExtension() + ".";

    return fileWithoutSuffix.containsIgnoreCase (suffix + String ("."))
             || fileWithoutSuffix.containsIgnoreCase (suffix + String ("_"));
}

Array<LibraryModule::CompileUnit> LibraryModule::getAllCompileUnits (build_tools::ProjectType::Target::Type forTarget) const
{
    auto files = getFolder().findChildFiles (File::findFiles, false);

    FileSorter sorter;
    files.sort (sorter);

    Array<LibraryModule::CompileUnit> units;

    for (auto& file : files)
    {
        if (file.getFileName().startsWithIgnoreCase (getID())
              && file.hasFileExtension (sourceFileExtensions))
        {
            if (forTarget == build_tools::ProjectType::Target::unspecified
             || forTarget == Project::getTargetTypeFromFilePath (file, true))
            {
                CompileUnit cu;
                cu.file = file;
                units.add (std::move (cu));
            }
        }
    }

    for (auto& cu : units)
    {
        cu.isCompiledForObjC = true;
        cu.isCompiledForNonObjC = ! cu.file.hasFileExtension ("mm;m");

        if (cu.isCompiledForNonObjC)
            if (cu.file.withFileExtension ("mm").existsAsFile())
                cu.isCompiledForObjC = false;

        jassert (cu.isCompiledForObjC || cu.isCompiledForNonObjC);
    }

    return units;
}

void LibraryModule::findAndAddCompiledUnits (ProjectExporter& exporter,
                                             ProjectSaver* projectSaver,
                                             Array<File>& result,
                                             build_tools::ProjectType::Target::Type forTarget) const
{
    for (auto& cu : getAllCompileUnits (forTarget))
    {
        if (cu.isNeededForExporter (exporter))
        {
            auto localFile = exporter.getProject().getGeneratedCodeFolder()
                                                  .getChildFile (cu.getFilenameForProxyFile());
            result.add (localFile);

            if (projectSaver != nullptr)
                projectSaver->addFileToGeneratedGroup (localFile);
        }
    }
}

void LibraryModule::addBrowseableCode (ProjectExporter& exporter, const Array<File>& compiled, const File& localModuleFolder) const
{
    if (sourceFiles.isEmpty())
        findBrowseableFiles (localModuleFolder, sourceFiles);

    auto sourceGroup       = Project::Item::createGroup (exporter.getProject(), getID(), "__mainsourcegroup" + getID(), false);
    auto moduleFromProject = exporter.getModuleFolderRelativeToProject (getID());
    auto moduleHeader      = moduleInfo.getHeader();

    auto& project = exporter.getProject();

    if (project.getEnabledModules().shouldCopyModuleFilesLocally (getID()))
        moduleHeader = project.getLocalModuleFolder (getID()).getChildFile (moduleHeader.getFileName());

    auto isModuleHeader = [&] (const File& f)  { return f.getFileName() == moduleHeader.getFileName(); };

    for (auto& sourceFile : sourceFiles)
    {
        auto pathWithinModule = build_tools::getRelativePathFrom (sourceFile, localModuleFolder);

        // (Note: in exporters like MSVC we have to avoid adding the same file twice, even if one of those instances
        // is flagged as being excluded from the build, because this overrides the other and it fails to compile)
        if ((exporter.canCopeWithDuplicateFiles() || ! compiled.contains (sourceFile)) && ! isModuleHeader (sourceFile))
            addFileWithGroups (sourceGroup, moduleFromProject.getChildFile (pathWithinModule), pathWithinModule);
    }

    sourceGroup.sortAlphabetically (true, true);
    sourceGroup.addFileAtIndex (moduleHeader, -1, false);

    exporter.getModulesGroup().state.appendChild (sourceGroup.state.createCopy(), nullptr);
}

//==============================================================================
EnabledModuleList::EnabledModuleList (Project& p, const ValueTree& s)
    : project (p), state (s)
{
}

StringArray EnabledModuleList::getAllModules() const
{
    StringArray moduleIDs;

    for (int i = 0; i < getNumModules(); ++i)
        moduleIDs.add (getModuleID (i));

    return moduleIDs;
}

void EnabledModuleList::createRequiredModules (OwnedArray<LibraryModule>& modules)
{
    for (int i = 0; i < getNumModules(); ++i)
        modules.add (new LibraryModule (getModuleInfo (getModuleID (i))));
}

void EnabledModuleList::sortAlphabetically()
{
    struct ModuleTreeSorter
    {
        static int compareElements (const ValueTree& m1, const ValueTree& m2)
        {
            return m1[Ids::ID].toString().compareIgnoreCase (m2[Ids::ID]);
        }
    };

    ModuleTreeSorter sorter;
    state.sort (sorter, getUndoManager(), false);
}

File EnabledModuleList::getDefaultModulesFolder() const
{
    File globalPath (getAppSettings().getStoredPath (Ids::defaultJuceModulePath, TargetOS::getThisOS()).get().toString());

    if (globalPath.exists())
        return globalPath;

    for (auto& exporterPathModule : project.getExporterPathsModuleList().getAllModules())
    {
        auto f = exporterPathModule.second;

        if (f.isDirectory())
            return f.getParentDirectory();
    }

    return File::getCurrentWorkingDirectory();
}

ModuleDescription EnabledModuleList::getModuleInfo (const String& moduleID)
{
    return ModuleDescription (project.getModuleWithID (moduleID).second);
}

bool EnabledModuleList::isModuleEnabled (const String& moduleID) const
{
    return state.getChildWithProperty (Ids::ID, moduleID).isValid();
}

static void getDependencies (Project& project, const String& moduleID, StringArray& dependencies)
{
    auto info = project.getEnabledModules().getModuleInfo (moduleID);

    for (auto uid : info.getDependencies())
    {
        if (! dependencies.contains (uid, true))
        {
            dependencies.add (uid);
            getDependencies (project, uid, dependencies);
        }
    }
}

StringArray EnabledModuleList::getExtraDependenciesNeeded (const String& moduleID) const
{
    StringArray dependencies, extraDepsNeeded;
    getDependencies (project, moduleID, dependencies);

    for (auto dep : dependencies)
        if (dep != moduleID && ! isModuleEnabled (dep))
            extraDepsNeeded.add (dep);

    return extraDepsNeeded;
}

bool EnabledModuleList::doesModuleHaveHigherCppStandardThanProject (const String& moduleID)
{
    auto projectCppStandard = project.getCppStandardString();

    if (projectCppStandard == "latest")
        return false;

    auto moduleCppStandard = getModuleInfo (moduleID).getMinimumCppStandard();

    return (moduleCppStandard.getIntValue() > projectCppStandard.getIntValue());
}

bool EnabledModuleList::shouldUseGlobalPath (const String& moduleID) const
{
    return (bool) shouldUseGlobalPathValue (moduleID).getValue();
}

Value EnabledModuleList::shouldUseGlobalPathValue (const String& moduleID) const
{
    return state.getChildWithProperty (Ids::ID, moduleID)
                .getPropertyAsValue (Ids::useGlobalPath, getUndoManager());
}

bool EnabledModuleList::shouldShowAllModuleFilesInProject (const String& moduleID) const
{
    return (bool) shouldShowAllModuleFilesInProjectValue (moduleID).getValue();
}

Value EnabledModuleList::shouldShowAllModuleFilesInProjectValue (const String& moduleID) const
{
    return state.getChildWithProperty (Ids::ID, moduleID)
                .getPropertyAsValue (Ids::showAllCode, getUndoManager());
}

bool EnabledModuleList::shouldCopyModuleFilesLocally (const String& moduleID) const
{
    return (bool) shouldCopyModuleFilesLocallyValue (moduleID).getValue();
}

Value EnabledModuleList::shouldCopyModuleFilesLocallyValue (const String& moduleID) const
{
    return state.getChildWithProperty (Ids::ID, moduleID)
                .getPropertyAsValue (Ids::useLocalCopy, getUndoManager());
}

bool EnabledModuleList::areMostModulesUsingGlobalPath() const
{
    int numYes = 0, numNo = 0;

    for (auto i = getNumModules(); --i >= 0;)
    {
        if (shouldUseGlobalPath (getModuleID (i)))
            ++numYes;
        else
            ++numNo;
    }

    return numYes > numNo;
}

bool EnabledModuleList::areMostModulesCopiedLocally() const
{
    int numYes = 0, numNo = 0;

    for (auto i = getNumModules(); --i >= 0;)
    {
        if (shouldCopyModuleFilesLocally (getModuleID (i)))
            ++numYes;
        else
            ++numNo;
    }

    return numYes > numNo;
}

void EnabledModuleList::addModule (const File& moduleFolder, bool copyLocally, bool useGlobalPath)
{
    ModuleDescription info (moduleFolder);

    if (info.isValid())
    {
        auto moduleID = info.getID();

        if (! isModuleEnabled (moduleID))
        {
            ValueTree module (Ids::MODULE);
            module.setProperty (Ids::ID, moduleID, getUndoManager());

            state.appendChild (module, getUndoManager());
            sortAlphabetically();

            shouldShowAllModuleFilesInProjectValue (moduleID) = true;
            shouldCopyModuleFilesLocallyValue (moduleID) = copyLocally;
            shouldUseGlobalPathValue (moduleID) = useGlobalPath;

            build_tools::RelativePath path (moduleFolder.getParentDirectory(),
                                            project.getProjectFolder(),
                                            build_tools::RelativePath::projectFolder);

            for (Project::ExporterIterator exporter (project); exporter.next();)
                exporter->getPathForModuleValue (moduleID) = path.toUnixStyle();

            if (! useGlobalPath)
                project.rescanExporterPathModules (false);
        }
    }
}

void EnabledModuleList::addModuleInteractive (const String& moduleID)
{
    auto f = project.getModuleWithID (moduleID).second;

    if (f != File())
    {
        addModule (f, areMostModulesCopiedLocally(), areMostModulesUsingGlobalPath());
        return;
    }

    addModuleFromUserSelectedFile();
}

void EnabledModuleList::addModuleFromUserSelectedFile()
{
    auto lastLocation = getDefaultModulesFolder();

    FileChooser fc ("Select a module to add...", lastLocation, {});

    if (fc.browseForDirectory())
    {
        lastLocation = fc.getResult();
        addModuleOfferingToCopy (lastLocation, true);
    }
}

void EnabledModuleList::addModuleOfferingToCopy (const File& f, bool isFromUserSpecifiedFolder)
{
    ModuleDescription m (f);

    if (! m.isValid())
    {
        AlertWindow::showMessageBoxAsync (AlertWindow::InfoIcon,
                                          "Add Module", "This wasn't a valid module folder!");
        return;
    }

    if (isModuleEnabled (m.getID()))
    {
        AlertWindow::showMessageBoxAsync (AlertWindow::InfoIcon,
                                          "Add Module", "The project already contains this module!");
        return;
    }

    addModule (m.moduleFolder, areMostModulesCopiedLocally(),
               isFromUserSpecifiedFolder ? false : areMostModulesUsingGlobalPath());
}

void EnabledModuleList::removeModule (String moduleID) // must be pass-by-value, and not a const ref!
{
    for (auto i = state.getNumChildren(); --i >= 0;)
        if (state.getChild(i) [Ids::ID] == moduleID)
            state.removeChild (i, getUndoManager());

    for (Project::ExporterIterator exporter (project); exporter.next();)
        exporter->removePathForModule (moduleID);
}