/*
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;

export namespace Crafter {
    struct MousePoint {
        std::uint32_t x;
        std::uint32_t y;
    };

    struct MouseDelta {
        std::int64_t x;
        std::int64_t y;
    };
    
    struct MouseMoveEvent {
        MousePoint lastMousePos;
        MousePoint currentMousePos;
        MouseDelta mouseDelta;
    };

    struct ScaleData {
        std::int32_t x;
		std::int32_t y;
		std::int32_t width;
		std::int32_t height;
    };

    struct ScaleDataBoundless {
        std::uint32_t x;
		std::uint32_t y;
		std::uint32_t width;
		std::uint32_t height;
    };

    struct ClipRect {
        std::int32_t left;
		std::int32_t right;
		std::int32_t top;
		std::int32_t bottom;
    };
    
    struct __attribute__((packed)) Pixel_BU8_GU8_RU8_AU8 {
        std::uint8_t b;
        std::uint8_t g;
        std::uint8_t r;
        std::uint8_t a;
    };

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

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

        float u;
        float v;

        float pad[2];
    };

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

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

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

        float pad[3];

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

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

    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
    };


    constexpr std::int8_t BOUND8 = 9;
    constexpr std::int8_t SCALE8 = std::numeric_limits<std::int8_t>::max() / BOUND8;
    constexpr std::uint8_t SCALEBOUNDLESS8 = std::numeric_limits<std::uint8_t>::max();

    constexpr double SCALEDOUBLE8 = static_cast<double>(std::numeric_limits<std::int8_t>::max() / BOUND8);
    constexpr double SCALEBOUNDLESSDOUBLE8 = static_cast<double>(std::numeric_limits<std::uint8_t>::max());

    constexpr std::int16_t BOUND16 = 9;
    constexpr std::int16_t SCALE16 = std::numeric_limits<std::int16_t>::max() / BOUND16;
    constexpr std::uint16_t SCALEBOUNDLESS16 = std::numeric_limits<std::uint16_t>::max();

    constexpr double SCALEDOUBLE16 = static_cast<double>(std::numeric_limits<std::int16_t>::max() / BOUND16);
    constexpr double SCALEBOUNDLESSDOUBLE16 = static_cast<double>(std::numeric_limits<std::uint16_t>::max());

    constexpr std::int32_t BOUND32 = 9;
    constexpr std::int32_t SCALE32 = std::numeric_limits<std::int32_t>::max() / BOUND32;
    constexpr std::uint32_t SCALEBOUNDLESS32 = std::numeric_limits<std::uint32_t>::max();

    constexpr double SCALEDOUBLE32 = static_cast<double>(std::numeric_limits<std::int32_t>::max() / BOUND32);
    constexpr double SCALEBOUNDLESSDOUBLE32 = static_cast<double>(std::numeric_limits<std::uint32_t>::max());

    constexpr std::int64_t BOUND64 = 9;
    constexpr std::int64_t SCALE64 = std::numeric_limits<std::int64_t>::max() / BOUND64;
    constexpr std::uint64_t SCALEBOUNDLESS64 = std::numeric_limits<std::uint64_t>::max();

    constexpr double SCALEDOUBLE64 = static_cast<double>(std::numeric_limits<std::int64_t>::max() / BOUND64);
    constexpr double SCALEBOUNDLESSDOUBLE64 = static_cast<double>(std::numeric_limits<std::uint64_t>::max());

    template <typename T>
    constexpr T FractionalToMapped(double f) requires(std::is_integral_v<T>) {
        if constexpr (std::is_same_v<T, std::int8_t> || std::is_same_v<T, std::uint8_t>) {
            return T(f * SCALEDOUBLE8);
        } else if constexpr (std::is_same_v<T, std::int16_t> || std::is_same_v<T, std::uint16_t>) {
            return T(f * SCALEDOUBLE16);
        } else if constexpr (std::is_same_v<T, std::int32_t> || std::is_same_v<T, std::uint32_t>) {
            return T(f * SCALEDOUBLE32);
        } else {
            return T(f * SCALEDOUBLE64);
        }
    }

    template <typename T>
    constexpr T FractionalToMappedBoundless(double f) requires(std::is_integral_v<T>) {
        if constexpr (std::is_same_v<T, std::uint8_t> || std::is_same_v<T, std::int8_t>) {
            return T(f * SCALEBOUNDLESSDOUBLE8);
        } else if constexpr (std::is_same_v<T, std::uint16_t> || std::is_same_v<T, std::int16_t>) {
            return T(f * SCALEBOUNDLESSDOUBLE16);
        } else if constexpr (std::is_same_v<T, std::uint32_t> || std::is_same_v<T, std::int32_t>) {
            return T(f * SCALEBOUNDLESSDOUBLE32);
        } else {
            return T(f * SCALEBOUNDLESSDOUBLE64);
        }
    }

    template <typename T>
    constexpr double MappedToFractional(T mapped) requires(std::is_integral_v<T>) {
        if constexpr (std::is_same_v<T, std::int8_t> || std::is_same_v<T, std::uint8_t>) {
            return mapped / SCALEDOUBLE8;
        } else if constexpr (std::is_same_v<T, std::int16_t> || std::is_same_v<T, std::uint16_t>) {
            return mapped / SCALEDOUBLE16;
        } else if constexpr (std::is_same_v<T, std::int32_t> || std::is_same_v<T, std::uint32_t>) {
            return mapped / SCALEDOUBLE32;
        } else {
            return mapped / SCALEDOUBLE64;
        }
    }

    template <typename T>
    constexpr double MappedToFractionalBoundless(T mapped) requires(std::is_integral_v<T>) {
        if constexpr (std::is_same_v<T, std::uint8_t> || std::is_same_v<T, std::int8_t>) {
            return mapped / SCALEBOUNDLESSDOUBLE8;
        } else if constexpr (std::is_same_v<T, std::uint16_t> || std::is_same_v<T, std::int16_t>) {
            return mapped / SCALEBOUNDLESSDOUBLE16;
        } else if constexpr (std::is_same_v<T, std::uint32_t> || std::is_same_v<T, std::int32_t>) {
            return mapped / SCALEBOUNDLESSDOUBLE32;
        } else {
            return mapped / SCALEBOUNDLESSDOUBLE64;
        }
    }

    template <typename T, typename T2>
    constexpr T MappedToAbsolute(T mapped, T2 absolute) requires(std::is_integral_v<T>) {
        if constexpr (std::is_same_v<T, std::int8_t> || std::is_same_v<T, std::uint8_t>) {
            return static_cast<std::int16_t>(mapped) * absolute / SCALE8;
        } else if constexpr (std::is_same_v<T, std::int16_t> || std::is_same_v<T, std::uint16_t>) {
            return static_cast<std::int32_t>(mapped) * absolute / SCALE16;
        } else if constexpr (std::is_same_v<T, std::int32_t> || std::is_same_v<T, std::uint32_t>) {
            return static_cast<std::int64_t>(mapped) * absolute / SCALE32;
        } else {
            return static_cast<__int128>(mapped) * absolute / SCALE64;
        }
    }

    template <typename T, typename T2>
    constexpr T MappedToAbsoluteBoundless(T mapped, T2 absolute) requires(std::is_integral_v<T>) {
        if constexpr (std::is_same_v<T, std::uint8_t> || std::is_same_v<T, std::int8_t>) {
            return static_cast<std::uint16_t>(mapped) * absolute / SCALEBOUNDLESS8;
        } else if constexpr (std::is_same_v<T, std::uint16_t> || std::is_same_v<T, std::int16_t>) {
            return static_cast<std::uint32_t>(mapped) * absolute / SCALEBOUNDLESS16;
        } else if constexpr (std::is_same_v<T, std::uint32_t> || std::is_same_v<T, std::int32_t>) {
            return static_cast<std::uint64_t>(mapped) * absolute / SCALEBOUNDLESS32;
        } else {
            return static_cast<unsigned __int128>(mapped) * absolute / SCALEBOUNDLESS64;
        }
    }

    // template <typename T, typename T2>
    // constexpr T PixelToMappedBoundless(T pixel, T2 screen) requires(std::is_integral_v<T>) {
    //     if constexpr (std::is_same_v<T, std::uint8_t>) {
    //         return (static_cast<std::uint16_t>(relative) * SCALE8) / (static_cast<std::uint16_t>(absolute) * SCALE8);
    //     } else if constexpr (std::is_same_v<T, std::uint16_t>) {
    //         return (static_cast<std::uint32_t>(relative) * SCALE16) / (static_cast<std::uint32_t>(absolute) * SCALE16);
    //     } else if constexpr (std::is_same_v<T, std::uint32_t>) {
    //         return (static_cast<std::uint64_t>(relative) * SCALE32) / (static_cast<std::uint64_t>(absolute) * SCALE32);
    //     } else {
    //         return (static_cast<unsigned __int128>(relative) * SCALE32) / (static_cast<unsigned __int128>(absolute) * SCALE32);
    //     }
    // }

    template <typename T, typename T2>
    constexpr T AbsoluteToMapped(T absolute, T2 mapped) {
        if constexpr (std::is_same_v<T, std::int8_t> || std::is_same_v<T, std::uint8_t>) {
            return static_cast<std::int16_t>(absolute) * SCALE8 / mapped;
        } else if constexpr (std::is_same_v<T, std::int16_t> || std::is_same_v<T, std::uint16_t> ) {
            return static_cast<std::int32_t>(absolute) * SCALE16 / mapped;
        } else if constexpr (std::is_same_v<T, std::int32_t>|| std::is_same_v<T, std::uint32_t>) {
            return static_cast<std::int64_t>(absolute) * SCALE32 / mapped;
        } else {
            return static_cast<__int128>(absolute) * SCALE64 / mapped;
        }
    }

    template <typename T, typename T2>
    constexpr T AbsoluteToMappedBoundless(T absolute, T2 mapped) {
        if constexpr (std::is_same_v<T, std::uint8_t> || std::is_same_v<T, std::int8_t> ) {
            return static_cast<std::uint16_t>(absolute) * SCALEBOUNDLESS8 / mapped;
        } else if constexpr (std::is_same_v<T, std::uint16_t> || std::is_same_v<T, std::int16_t>) {
            return static_cast<std::uint32_t>(absolute) * SCALEBOUNDLESS16 / mapped;
        } else if constexpr (std::is_same_v<T, std::uint32_t> || std::is_same_v<T, std::int32_t>) {
            return static_cast<std::uint64_t>(absolute) * SCALEBOUNDLESS32 / mapped;
        } else {
            return static_cast<unsigned __int128>(absolute) * SCALEBOUNDLESS64 / mapped;
        }
    }
    
    template <typename T>
    constexpr T BoundToBoundless(T mapped) {
        if constexpr (std::is_same_v<T, std::uint8_t> || std::is_same_v<T, std::int8_t>) {
            return mapped * BOUND8 * 2;
        } else if constexpr (std::is_same_v<T, std::uint16_t> || std::is_same_v<T, std::int16_t>) {
            return mapped * BOUND16 * 2;
        } else if constexpr (std::is_same_v<T, std::uint32_t> || std::is_same_v<T, std::int32_t>) {
            return mapped * BOUND32 * 2;
        } else {
            return mapped * BOUND64 * 2;
        }
    }

    template <typename T>
    constexpr T BoundlessToBound(T mapped) {
        if constexpr (std::is_same_v<T, std::uint8_t> || std::is_same_v<T, std::int8_t> ) {
            return mapped / 2;
        } else if constexpr (std::is_same_v<T, std::uint16_t> || std::is_same_v<T, std::int16_t>) {
            return mapped / 2;
        } else if constexpr (std::is_same_v<T, std::uint32_t> || std::is_same_v<T, std::int32_t>) {
            return mapped / 2;
        } else {
            return mapped / 2;
        }
    }

    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
    };
}