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

   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.

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

#pragma once

#include "../Project/jucer_Project.h"
#include "../Utility/UI/PropertyComponents/jucer_PropertyComponentsWithEnablement.h"

class ProjectSaver;

//==============================================================================
class ProjectExporter  : private Value::Listener
{
public:
    ProjectExporter (Project&, const ValueTree& settings);
    virtual ~ProjectExporter() override;

    struct ExporterTypeInfo
    {
        String name;
        const void* iconData;
        int iconDataSize;

        Image getIcon() const
        {
            Image image (Image::ARGB, 200, 200, true);
            Graphics g (image);

            std::unique_ptr<Drawable> svgDrawable (Drawable::createFromImageData (iconData, (size_t) iconDataSize));

            svgDrawable->drawWithin (g, image.getBounds().toFloat(), RectanglePlacement::fillDestination, 1.0f);

            return image;
        }
    };

    static StringArray getExporterNames();
    static StringArray getExporterValueTreeNames();
    static Array<ExporterTypeInfo> getExporterTypes();
    static String getValueTreeNameForExporter (const String& exporterName);
    static String getTargetFolderForExporter (const String& exporterValueTreeName);
    static StringArray getAllDefaultBuildsFolders();

    static ProjectExporter* createNewExporter (Project&, const int index);
    static ProjectExporter* createNewExporter (Project&, const String& name);
    static ProjectExporter* createExporter (Project&, const ValueTree& settings);
    static bool canProjectBeLaunched (Project*);

    static String getCurrentPlatformExporterName();

    //==============================================================================
    // capabilities of exporter
    virtual bool usesMMFiles() const = 0;
    virtual void createExporterProperties (PropertyListBuilder&) = 0;
    virtual bool canLaunchProject() = 0;
    virtual bool launchProject() = 0;
    virtual void create (const OwnedArray<LibraryModule>&) const = 0; // may throw a SaveError
    virtual bool shouldFileBeCompiledByDefault (const File& path) const;
    virtual bool canCopeWithDuplicateFiles() = 0;
    virtual bool supportsUserDefinedConfigurations() const = 0; // false if exporter only supports two configs Debug and Release
    virtual void updateDeprecatedSettings()               {}
    virtual void updateDeprecatedSettingsInteractively()  {}
    virtual void initialiseDependencyPathValues()         {}

    // IDE targeted by exporter
    virtual bool isXcode() const         = 0;
    virtual bool isVisualStudio() const  = 0;
    virtual bool isCodeBlocks() const    = 0;
    virtual bool isMakefile() const      = 0;
    virtual bool isAndroidStudio() const = 0;
    virtual bool isCLion() const         = 0;

    // operating system targeted by exporter
    virtual bool isAndroid() const = 0;
    virtual bool isWindows() const = 0;
    virtual bool isLinux() const   = 0;
    virtual bool isOSX() const     = 0;
    virtual bool isiOS() const     = 0;

    virtual String getDescription()   { return {}; }

    //==============================================================================
    // cross-platform audio plug-ins supported by exporter
    virtual bool supportsTargetType (build_tools::ProjectType::Target::Type type) const = 0;

    inline bool shouldBuildTargetType (build_tools::ProjectType::Target::Type type) const
    {
        return project.shouldBuildTargetType (type) && supportsTargetType (type);
    }

    inline void callForAllSupportedTargets (std::function<void (build_tools::ProjectType::Target::Type)> callback)
    {
        for (int i = 0; i < build_tools::ProjectType::Target::unspecified; ++i)
            if (shouldBuildTargetType (static_cast<build_tools::ProjectType::Target::Type> (i)))
                callback (static_cast<build_tools::ProjectType::Target::Type> (i));
    }

    //==============================================================================
    bool mayCompileOnCurrentOS() const
    {
       #if JUCE_MAC
        return isOSX() || isAndroid() || isiOS();
       #elif JUCE_WINDOWS
        return isWindows() || isAndroid();
       #elif JUCE_LINUX
        return isLinux() || isAndroid();
       #else
        #error
       #endif
    }

    //==============================================================================
    String getName() const;
    File getTargetFolder() const;

    Project& getProject() noexcept                        { return project; }
    const Project& getProject() const noexcept            { return project; }

    UndoManager* getUndoManager() const                   { return project.getUndoManagerFor (settings); }

    Value getSetting (const Identifier& nm)               { return settings.getPropertyAsValue (nm, project.getUndoManagerFor (settings)); }
    String getSettingString (const Identifier& nm) const  { return settings [nm]; }

    Value getTargetLocationValue()                        { return targetLocationValue.getPropertyAsValue(); }
    String getTargetLocationString() const                { return targetLocationValue.get(); }

    String getExtraCompilerFlagsString() const            { return extraCompilerFlagsValue.get().toString().replaceCharacters ("\r\n", "  "); }
    String getExtraLinkerFlagsString() const              { return extraLinkerFlagsValue.get().toString().replaceCharacters ("\r\n", "  "); }

    String getExternalLibrariesString() const             { return getSearchPathsFromString (externalLibrariesValue.get().toString()).joinIntoString (";"); }

    bool shouldUseGNUExtensions() const                   { return gnuExtensionsValue.get(); }

    String getVSTLegacyPathString() const                 { return vstLegacyPathValueWrapper.wrappedValue.get(); }
    String getAAXPathString() const                       { return aaxPathValueWrapper.wrappedValue.get(); }
    String getRTASPathString() const                      { return rtasPathValueWrapper.wrappedValue.get(); }

    // NB: this is the path to the parent "modules" folder that contains the named module, not the
    // module folder itself.
    ValueWithDefault getPathForModuleValue (const String& moduleID);
    String getPathForModuleString (const String& moduleID) const;
    void removePathForModule (const String& moduleID);

    TargetOS::OS getTargetOSForExporter() const;

    build_tools::RelativePath getLegacyModulePath (const String& moduleID) const;
    String getLegacyModulePath() const;

    // Returns a path to the actual module folder itself
    build_tools::RelativePath getModuleFolderRelativeToProject (const String& moduleID) const;
    void updateOldModulePaths();

    build_tools::RelativePath rebaseFromProjectFolderToBuildTarget (const build_tools::RelativePath& path) const;
    void addToExtraSearchPaths (const build_tools::RelativePath& pathFromProjectFolder, int index = -1);
    void addToModuleLibPaths   (const build_tools::RelativePath& pathFromProjectFolder);

    void addProjectPathToBuildPathList (StringArray&, const build_tools::RelativePath&, int index = -1) const;

    std::unique_ptr<Drawable> getBigIcon() const;
    std::unique_ptr<Drawable> getSmallIcon() const;
    build_tools::Icons getIcons() const { return { getSmallIcon(), getBigIcon() }; }

    String getExporterIdentifierMacro() const
    {
        return "JUCER_" + settings.getType().toString() + "_"
                + String::toHexString (getTargetLocationString().hashCode()).toUpperCase();
    }

    // An exception that can be thrown by the create() method.
    void createPropertyEditors (PropertyListBuilder&);
    void addSettingsForProjectType (const build_tools::ProjectType&);

    //==============================================================================
    void copyMainGroupFromProject();
    Array<Project::Item>& getAllGroups() noexcept               { jassert (itemGroups.size() > 0); return itemGroups; }
    const Array<Project::Item>& getAllGroups() const noexcept   { jassert (itemGroups.size() > 0); return itemGroups; }
    Project::Item& getModulesGroup();

    //==============================================================================
    StringArray linuxLibs, linuxPackages, makefileExtraLinkerFlags;

    //==============================================================================
    StringPairArray msvcExtraPreprocessorDefs;
    String msvcDelayLoadedDLLs;
    StringArray mingwLibs, windowsLibs;

    //==============================================================================
    StringArray androidLibs;

    //==============================================================================
    StringArray extraSearchPaths;
    StringArray moduleLibSearchPaths;

    //==============================================================================
    class BuildConfiguration  : public ReferenceCountedObject
    {
    public:
        BuildConfiguration (Project& project, const ValueTree& configNode, const ProjectExporter&);
        ~BuildConfiguration();

        using Ptr = ReferenceCountedObjectPtr<BuildConfiguration>;

        //==============================================================================
        virtual void createConfigProperties (PropertyListBuilder&) = 0;
        virtual String getModuleLibraryArchName() const = 0;

        //==============================================================================
        String getName() const                                 { return configNameValue.get(); }
        bool isDebug() const                                   { return isDebugValue.get(); }

        String getTargetBinaryRelativePathString() const       { return targetBinaryPathValue.get(); }
        String getTargetBinaryNameString (bool isUnityPlugin = false) const
        {
            return (isUnityPlugin ? Project::addUnityPluginPrefixIfNecessary (targetNameValue.get().toString())
                                  : targetNameValue.get().toString());
        }

        int getOptimisationLevelInt() const                    { return optimisationLevelValue.get(); }
        String getGCCOptimisationFlag() const;
        bool isLinkTimeOptimisationEnabled() const             { return linkTimeOptimisationValue.get(); }

        String getBuildConfigPreprocessorDefsString() const    { return ppDefinesValue.get(); }
        StringPairArray getAllPreprocessorDefs() const;        // includes inherited definitions
        StringPairArray getUniquePreprocessorDefs() const;     // returns pre-processor definitions that are not already in the project pre-processor defs

        String getHeaderSearchPathString() const               { return headerSearchPathValue.get(); }
        StringArray getHeaderSearchPaths() const;

        String getLibrarySearchPathString() const              { return librarySearchPathValue.get(); }
        StringArray getLibrarySearchPaths() const;
        String getGCCLibraryPathFlags() const;

        //==============================================================================
        Value getValue (const Identifier& nm)                  { return config.getPropertyAsValue (nm, getUndoManager()); }
        UndoManager* getUndoManager() const                    { return project.getUndoManagerFor (config); }

        //==============================================================================
        void createPropertyEditors (PropertyListBuilder&);
        void addRecommendedLinuxCompilerWarningsProperty (PropertyListBuilder&);
        void addRecommendedLLVMCompilerWarningsProperty (PropertyListBuilder&);
        StringArray getRecommendedCompilerWarningFlags() const;
        void addGCCOptimisationProperty (PropertyListBuilder&);
        void removeFromExporter();

        //==============================================================================
        ValueTree config;
        Project& project;
        const ProjectExporter& exporter;

    protected:
        ValueWithDefault isDebugValue, configNameValue, targetNameValue, targetBinaryPathValue, recommendedWarningsValue, optimisationLevelValue,
                         linkTimeOptimisationValue, ppDefinesValue, headerSearchPathValue, librarySearchPathValue, userNotesValue;

    private:
        std::map<String, StringArray> recommendedCompilerWarningFlags;

        JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (BuildConfiguration)
    };

    void addNewConfigurationFromExisting (const BuildConfiguration& configToCopy);
    void addNewConfiguration (bool isDebugConfig);
    bool hasConfigurationNamed (const String& name) const;
    String getUniqueConfigName (String name) const;

    String getExternalLibraryFlags (const BuildConfiguration& config) const;

    //==============================================================================
    struct ConfigIterator
    {
        ConfigIterator (ProjectExporter& exporter);

        bool next();

        BuildConfiguration& operator*() const       { return *config; }
        BuildConfiguration* operator->() const      { return config.get(); }

        BuildConfiguration::Ptr config;
        int index;

    private:
        ProjectExporter& exporter;
        JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (ConfigIterator)
    };

    struct ConstConfigIterator
    {
        ConstConfigIterator (const ProjectExporter& exporter);

        bool next();

        const BuildConfiguration& operator*() const       { return *config; }
        const BuildConfiguration* operator->() const      { return config.get(); }

        BuildConfiguration::Ptr config;
        int index;

    private:
        const ProjectExporter& exporter;
        JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (ConstConfigIterator)
    };

    int getNumConfigurations() const;
    BuildConfiguration::Ptr getConfiguration (int index) const;

    ValueTree getConfigurations() const;
    virtual void createDefaultConfigs();
    void createDefaultModulePaths();

    //==============================================================================
    Value getExporterPreprocessorDefsValue()            { return extraPPDefsValue.getPropertyAsValue(); }
    String getExporterPreprocessorDefsString() const    { return extraPPDefsValue.get(); }

    // includes exporter, project + config defs
    StringPairArray getAllPreprocessorDefs (const BuildConfiguration& config, const build_tools::ProjectType::Target::Type targetType) const;
    // includes exporter + project defs
    StringPairArray getAllPreprocessorDefs() const;
    // just appconfig defs
    StringPairArray getAppConfigDefs() const;

    void addTargetSpecificPreprocessorDefs (StringPairArray& defs, const build_tools::ProjectType::Target::Type targetType) const;

    String replacePreprocessorTokens (const BuildConfiguration&, const String& sourceString) const;

    ValueTree settings;

    enum GCCOptimisationLevel
    {
        gccO0     = 1,
        gccO1     = 4,
        gccO2     = 5,
        gccO3     = 3,
        gccOs     = 2,
        gccOfast  = 6
    };

protected:
    //==============================================================================
    String name;
    Project& project;
    const build_tools::ProjectType& projectType;
    const String projectName;
    const File projectFolder;

    //==============================================================================
    // Wraps a ValueWithDefault object that has a default which depends on a global value.
    // Used for the VST, RTAS and AAX project-specific path options.
    struct ValueWithDefaultWrapper  : public Value::Listener
    {
        void init (const ValueWithDefault& vwd, ValueWithDefault global, TargetOS::OS targetOS)
        {
            wrappedValue = vwd;
            globalValue = global.getPropertyAsValue();
            globalIdentifier = global.getPropertyID();
            os = targetOS;

            if (wrappedValue.get() == var())
                wrappedValue.resetToDefault();

            globalValue.addListener (this);
            valueChanged (globalValue);
        }

        void valueChanged (Value&) override
        {
            wrappedValue.setDefault (getAppSettings().getStoredPath (globalIdentifier, os).get());
        }

        ValueWithDefault wrappedValue;
        Value globalValue;

        Identifier globalIdentifier;
        TargetOS::OS os;
    };

    ValueWithDefaultWrapper vstLegacyPathValueWrapper, rtasPathValueWrapper, aaxPathValueWrapper;

    ValueWithDefault targetLocationValue, extraCompilerFlagsValue, extraLinkerFlagsValue, externalLibrariesValue,
                     userNotesValue, gnuExtensionsValue, bigIconValue, smallIconValue, extraPPDefsValue;

    Value projectCompilerFlagSchemesValue;
    HashMap<String, ValueWithDefault> compilerFlagSchemesMap;

    mutable Array<Project::Item> itemGroups;
    Project::Item* modulesGroup = nullptr;

    virtual BuildConfiguration::Ptr createBuildConfig (const ValueTree&) const = 0;

    void addDefaultPreprocessorDefs (StringPairArray&) const;

    static String getDefaultBuildsRootFolder()            { return "Builds/"; }

    static String getStaticLibbedFilename (String name)   { return addSuffix (addLibPrefix (name), ".a"); }
    static String getDynamicLibbedFilename (String name)  { return addSuffix (addLibPrefix (name), ".so"); }

    virtual void addPlatformSpecificSettingsForProjectType (const build_tools::ProjectType&) = 0;

    //==============================================================================
    static void createDirectoryOrThrow (const File& dirToCreate)
    {
        if (! dirToCreate.createDirectory())
            throw build_tools::SaveError ("Can't create folder: " + dirToCreate.getFullPathName());
    }

    static void writeXmlOrThrow (const XmlElement& xml, const File& file, const String& encoding,
                                 int maxCharsPerLine, bool useUnixNewLines = false)
    {
        XmlElement::TextFormat format;
        format.customEncoding = encoding;
        format.lineWrapLength = maxCharsPerLine;
        format.newLineChars = useUnixNewLines ? "\n" : "\r\n";

        MemoryOutputStream mo (8192);
        xml.writeTo (mo, format);
        build_tools::overwriteFileIfDifferentOrThrow (file, mo);
    }

private:
    //==============================================================================
    void valueChanged (Value&) override   { updateCompilerFlagValues(); }
    void updateCompilerFlagValues();

    //==============================================================================
    static String addLibPrefix (const String name)
    {
        return name.startsWith ("lib") ? name
                                       : "lib" + name;
    }

    static String addSuffix (const String name, const String suffix)
    {
        return name.endsWithIgnoreCase (suffix) ? name
                                                : name + suffix;
    }

    void createDependencyPathProperties (PropertyListBuilder&);
    void createIconProperties (PropertyListBuilder&);
    void addVSTPathsIfPluginOrHost();
    void addCommonAudioPluginSettings();
    void addLegacyVSTFolderToPathIfSpecified();
    build_tools::RelativePath getInternalVST3SDKPath();
    void addAAXFoldersToPath();

    JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (ProjectExporter)
};