/*  
 * InfiniPaint
 * Copyright (C) 2025-2026 Yousef Khadadeh
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */

#pragma once
#include <cstdint>
#include <modules/skparagraph/include/Paragraph.h>
#include <modules/skparagraph/include/TextStyle.h>
#include "cereal/archives/portable_binary.hpp"
#include "../SharedTypes.hpp"
#include "../FontData.hpp"

namespace RichText {

class TextStyleModifier {
    public:
        enum class ModifierType : uint16_t {
            SIZE = 0,
            COLOR,
            WEIGHT,
            SLANT,
            DECORATION,
            FONT_FAMILIES,
            HIGHLIGHT_COLOR,

            COUNT
        };

        typedef std::unordered_map<ModifierType, std::shared_ptr<TextStyleModifier>> ModifierMap;

        static std::shared_ptr<TextStyleModifier> allocate_modifier(ModifierType type);
        static std::shared_ptr<TextStyleModifier> get_default_modifier(ModifierType type);
        static const ModifierMap& get_default_modifiers();
        virtual ModifierType get_type() const = 0;
        virtual void save(cereal::PortableBinaryOutputArchive& a) const = 0;
        virtual void load(cereal::PortableBinaryInputArchive& a) = 0;
        virtual void modify_text_style(skia::textlayout::TextStyle& style) const = 0;
        bool equivalent(TextStyleModifier& modifier) const;
        virtual ~TextStyleModifier();
    private:
        static ModifierMap defaultMods;
        virtual bool equivalent_data(TextStyleModifier& modifier) const = 0;
};

class DecorationTextStyleModifier : public TextStyleModifier {
    public:
        DecorationTextStyleModifier() = default;
        DecorationTextStyleModifier(uint8_t initDecorationValue);
        virtual ModifierType get_type() const override;
        virtual void save(cereal::PortableBinaryOutputArchive& a) const override;
        virtual void load(cereal::PortableBinaryInputArchive& a) override;
        virtual void modify_text_style(skia::textlayout::TextStyle& style) const override;
        uint8_t get_decoration_value() const;
    private:
        uint8_t decorationValue;
        virtual bool equivalent_data(TextStyleModifier& modifier) const override;
};

class WeightTextStyleModifier : public TextStyleModifier {
    public:
        WeightTextStyleModifier() = default;
        WeightTextStyleModifier(SkFontStyle::Weight initWeight);
        virtual ModifierType get_type() const override;
        virtual void save(cereal::PortableBinaryOutputArchive& a) const override;
        virtual void load(cereal::PortableBinaryInputArchive& a) override;
        virtual void modify_text_style(skia::textlayout::TextStyle& style) const override;
        SkFontStyle::Weight get_weight() const;
    private:
        virtual bool equivalent_data(TextStyleModifier& modifier) const override;
        uint8_t weightValue;
};

class SlantTextStyleModifier : public TextStyleModifier {
    public:
        SlantTextStyleModifier() = default;
        SlantTextStyleModifier(uint8_t initSlantValue);
        virtual ModifierType get_type() const override;
        virtual void save(cereal::PortableBinaryOutputArchive& a) const override;
        virtual void load(cereal::PortableBinaryInputArchive& a) override;
        virtual void modify_text_style(skia::textlayout::TextStyle& style) const override;
        SkFontStyle::Slant get_slant() const;
    private:
        virtual bool equivalent_data(TextStyleModifier& modifier) const override;
        uint8_t slantValue;
};

class ColorTextStyleModifier : public TextStyleModifier {
    public:
        ColorTextStyleModifier() = default;
        ColorTextStyleModifier(const Vector4f& initColor);
        virtual ModifierType get_type() const override;
        virtual void save(cereal::PortableBinaryOutputArchive& a) const override;
        virtual void load(cereal::PortableBinaryInputArchive& a) override;
        virtual void modify_text_style(skia::textlayout::TextStyle& style) const override;
        const Vector4f& get_color() const;
    private:
        Vector4f color;
        virtual bool equivalent_data(TextStyleModifier& modifier) const override;
};

class HighlightColorTextStyleModifier : public TextStyleModifier {
    public:
        HighlightColorTextStyleModifier() = default;
        HighlightColorTextStyleModifier(const Vector4f& initColor);
        virtual ModifierType get_type() const override;
        virtual void save(cereal::PortableBinaryOutputArchive& a) const override;
        virtual void load(cereal::PortableBinaryInputArchive& a) override;
        virtual void modify_text_style(skia::textlayout::TextStyle& style) const override;
        const Vector4f& get_color() const;
    private:
        Vector4f color;
        virtual bool equivalent_data(TextStyleModifier& modifier) const override;
};

class SizeTextStyleModifier : public TextStyleModifier {
    public:
        SizeTextStyleModifier() = default;
        SizeTextStyleModifier(float initSize);
        virtual ModifierType get_type() const override;
        virtual void save(cereal::PortableBinaryOutputArchive& a) const override;
        virtual void load(cereal::PortableBinaryInputArchive& a) override;
        virtual void modify_text_style(skia::textlayout::TextStyle& style) const override;
        float get_size() const;
    private:
        float size;
        virtual bool equivalent_data(TextStyleModifier& modifier) const override;
};

class FontFamiliesTextStyleModifier : public TextStyleModifier {
    public:
        static std::shared_ptr<FontData> globalFontData;

        FontFamiliesTextStyleModifier() = default;
        FontFamiliesTextStyleModifier(const std::vector<SkString>& initFamilies);
        virtual ModifierType get_type() const override;
        virtual void save(cereal::PortableBinaryOutputArchive& a) const override;
        virtual void load(cereal::PortableBinaryInputArchive& a) override;
        virtual void modify_text_style(skia::textlayout::TextStyle& style) const override;
        const std::vector<SkString>& get_families() const;
    private:
        std::vector<SkString> families;
        virtual bool equivalent_data(TextStyleModifier& modifier) const override;
};

}