// Copyright (c) 2016-2018 Ember - Nomango
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.

#pragma once
#include <math/Vec2.hpp>

namespace ember
{
    namespace math
    {
        template <typename _Ty>
        struct RectT
        {
        public:
            using ValueType = _Ty;

            Vec2T<ValueType> left_top;
            Vec2T<ValueType> right_bottom;

        public:
            RectT() {}

            RectT(ValueType left, ValueType top, ValueType right, ValueType bottom)
                : left_top(left, top), right_bottom(right, bottom)
            {
            }

            RectT(const Vec2T<ValueType> &left_top, const Vec2T<ValueType> &right_bottom)
                : left_top(left_top), right_bottom(right_bottom)
            {
            }

            RectT(const RectT &other)
                : left_top(other.left_top), right_bottom(other.right_bottom)
            {
            }

            RectT &operator=(const RectT &other)
            {
                left_top = other.left_top;
                right_bottom = other.right_bottom;
                return *this;
            }

            inline bool operator==(const RectT &rect) const
            {
                return (left_top == rect.left_top) && (right_bottom == rect.right_bottom);
            }

            inline void Set(ValueType left, ValueType top, ValueType right, ValueType bottom)
            {
                left_top = Vec2T<ValueType>{left, top};
                right_bottom = Vec2T<ValueType>{right, bottom};
            }

            inline Vec2T<ValueType> GetCenter() const
            {
                return Vec2T<ValueType>{(left_top.x + right_bottom.x) / 2, (left_top.y + right_bottom.y) / 2};
            }

            inline Vec2T<ValueType> GetLeftTop() const
            {
                return left_top;
            }

            inline Vec2T<ValueType> GetRightBottom() const
            {
                return right_bottom;
            }

            inline Vec2T<ValueType> GetRightTop() const
            {
                return Vec2T<ValueType>{right_bottom.x, left_top.y};
            }

            inline Vec2T<ValueType> GetLeftBottom() const
            {
                return Vec2T<ValueType>{left_top.x, right_bottom.y};
            }

            inline ValueType GetLeft() const
            {
                return left_top.x;
            }

            inline ValueType GetTop() const
            {
                return left_top.y;
            }

            inline ValueType GetRight() const
            {
                return right_bottom.x;
            }

            inline ValueType GetBottom() const
            {
                return right_bottom.y;
            }

            inline ValueType GetWidth() const
            {
                return right_bottom.x - left_top.x;
            }

            inline ValueType GetHeight() const
            {
                return right_bottom.y - left_top.y;
            }

            inline Vec2T<ValueType> GetSize() const
            {
                return Vec2T<ValueType>{GetWidth(), GetHeight()};
            }

            inline bool IsEmpty() const
            {
                return left_top.IsOrigin() && right_bottom.IsOrigin();
            }

            inline bool ContainsPoint(const Vec2T<ValueType> &point) const
            {
                return point.x >= left_top.x && point.x <= right_bottom.x && point.y >= left_top.y && point.y <= right_bottom.y;
            }

            inline bool Intersects(const RectT &rect) const
            {
                return !(right_bottom.x < rect.left_top.x || rect.right_bottom.x < left_top.x || right_bottom.y < rect.left_top.y || rect.right_bottom.y < left_top.y);
            }

            static inline RectT Infinite()
            {
                return RectT{-math::FLOAT_MAX, -math::FLOAT_MAX, math::FLOAT_MAX, math::FLOAT_MAX};
            }
        };
    } // namespace math
} // namespace ember