/*
Crafter®.Graphics
Copyright (C) 2025 Catcrafts®
Catcrafts.net

This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 3.0 of the License, or (at your option) any later version.

This library 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
Lesser General Public License for more details.

You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301 USA
*/

export module Crafter.Graphics:Types;
import std;

namespace Crafter {
    export struct MousePoint {
        std::int_fast32_t x;
        std::int_fast32_t y;
    };
    
    export struct MouseMoveEvent {
        MousePoint lastMousePos;
        MousePoint currentMousePos;
        MousePoint mouseDelta;
    };

    export struct ScaleData {
        std::int_fast32_t x;
		std::int_fast32_t y;
		std::int_fast32_t width;
		std::int_fast32_t height;
    };

    export struct ClipRect {
        std::int_fast32_t left;
		std::int_fast32_t right;
		std::int_fast32_t top;
		std::int_fast32_t bottom;
    };
    
    export struct __attribute__((packed)) Pixel_BU8_GU8_RU8_AU8 {
        std::uint8_t b;
        std::uint8_t g;
        std::uint8_t r;
        std::uint8_t a;
    };

    export struct __attribute__((packed)) Pixel_RU8_GU8_BU8_AU8 {
        std::uint8_t r;
        std::uint8_t g;
        std::uint8_t b;
        std::uint8_t a;
    };

    export struct __attribute__((packed)) Vertex {
        float x;
        float y;
        float z;
        float w;
    };
    export struct __attribute__((packed)) VertexUV {
        float x;
        float y;
        float z;
        float w;

        float u;
        float v;

        float pad[2];
    };

    export struct __attribute__((packed)) VertexRGBA {
        float x;
        float y;
        float z;
        float w;

        float r;
        float g;
        float b;
        float a;
    };

    export struct __attribute__((packed)) HeightRGBA {
        float height;

        float pad[3];

        float r;
        float g;
        float b;
        float a;
    };

    export struct FrameTime {
        std::chrono::time_point<std::chrono::high_resolution_clock> now;
        std::chrono::duration<double> delta;
    };

    export enum class OpaqueType {
        FullyOpaque,      // All pixels have A of 255
        SemiOpaque,       // All pixels have A of 0 or 255 (no blending needed)
        Transparent       // Color blending is used
    };

    export constexpr std::int_fast32_t BOUND = 9;
    export constexpr std::int_fast32_t SCALE = std::numeric_limits<std::int_fast32_t>::max() / BOUND;
    export constexpr double SCALEDOUBLE = static_cast<double>(std::numeric_limits<std::int_fast32_t>::max()) / BOUND;
    export constexpr double SCALEDOUBLEU = static_cast<double>(std::numeric_limits<std::uint_fast32_t>::max()) / BOUND;

    export constexpr std::int_fast32_t SCALEBOUNDLESS = std::numeric_limits<std::int_fast32_t>::max();
    export constexpr double SCALEDOUBLEBOUNDLESS = static_cast<double>(std::numeric_limits<std::int_fast32_t>::max());

    export constexpr std::int_fast32_t SCALEBOUNDLESSU = std::numeric_limits<std::uint_fast32_t>::max();
    export constexpr double SCALEDOUBLEBOUNDLESSU = static_cast<double>(std::numeric_limits<std::uint_fast32_t>::max());

    export constexpr std::int_fast32_t FractionalToMapped(double f) {
        return std::int_fast32_t(f * SCALEDOUBLE);
    }

    export constexpr std::uint_fast32_t FractionalToMappedU(double f) {
        return std::uint_fast32_t(f * SCALEDOUBLEU);
    }

    export constexpr double MappedToFractional(std::int_fast32_t mapped) {
        return static_cast<double>(mapped) / SCALEDOUBLE;
    }

    export constexpr std::int_fast32_t MappedToPixel(std::int_fast32_t mapped, std::int_fast32_t width) {
        return mapped / (SCALE / width);
    }

    export constexpr std::int_fast32_t PixelToMapped(std::int_fast32_t pixel, std::int_fast32_t width) {
        return pixel * (SCALE / width);
    }

    export constexpr std::int_fast32_t RelativeToAbsolute(std::int_fast32_t relative, std::int_fast32_t full) {
        return static_cast<std::int_fast32_t>(
            (static_cast<__int128>(relative) * full) / SCALE
        );
    }

    export constexpr std::int_fast32_t BoundToBoundless(std::int_fast32_t bound) {
        return bound * BOUND;
    }

    export constexpr std::int_fast32_t BoundlessToBound(std::int_fast32_t bound) {
        return bound / BOUND;
    }

    export constexpr std::int_fast32_t FractionalToMappedBoundless(double f) {
        return std::int_fast32_t(f * SCALEDOUBLEBOUNDLESS);
    }

    export constexpr std::uint_fast32_t FractionalToMappedBoundlessU(double f) {
        return std::uint_fast32_t(f * SCALEDOUBLEBOUNDLESSU);
    }

    export constexpr double MappedToFractionalBoundless(std::int_fast32_t mapped) {
        return static_cast<double>(mapped) / SCALEDOUBLEBOUNDLESS;
    }

    export constexpr std::int_fast32_t MappedToPixelBoundless(std::int_fast32_t mapped, std::int_fast32_t width) {
        return mapped / (SCALEBOUNDLESS / width);
    }

    export constexpr std::int_fast32_t PixelToMappedBoundless(std::int_fast32_t pixel, std::int_fast32_t width) {
        return pixel * (SCALEBOUNDLESS / width);
    }

    export enum class CrafterKeys {
        // Alphabetic keys
        A, B, C, D, E, F, G, H, I, J, K, L, M,
        N, O, P, Q, R, S, T, U, V, W, X, Y, Z,

        // Numeric keys
        _0, _1, _2, _3, _4, _5, _6, _7, _8, _9,

        // Function keys
        F1, F2, F3, F4, F5, F6, F7, F8, F9, F10, F11, F12,

        // Control keys
        Escape, Tab, Enter, Space, Backspace, Delete, Insert,
        Home, End, PageUp, PageDown, CapsLock, NumLock, ScrollLock,

        // Modifier keys
        LeftShift, RightShift, LeftCtrl, RightCtrl,
        LeftAlt, RightAlt, LeftSuper, RightSuper,

        // Arrow keys
        Up, Down, Left, Right,

        // Keypad keys
        keypad_0, keypad_1, keypad_2, keypad_3, keypad_4,
        keypad_5, keypad_6, keypad_7, keypad_8, keypad_9,
        keypad_enter, keypad_plus, keypad_minus, keypad_multiply,
        keypad_divide, keypad_decimal,

        // Punctuation and special keys
        grave, minus, equal, bracket_left, bracket_right,
        backslash, semicolon, quote, comma, period, slash,
        print_screen, pause, menu,

        // Additional keys
        volume_up, volume_down, volume_mute,
        media_play, media_stop, media_prev, media_next,
        browser_back, browser_forward, browser_refresh,
        browser_stop, browser_search, browser_home,
        launch_mail, launch_calculator, launch_media_player,

        CrafterKeysMax
    };
}