#ifndef VECTOR2I_H
#define VECTOR2I_H

/*************************************************************************/
/*  vector2i.h                                                           */
/*************************************************************************/
/*                         This file is part of:                         */
/*                          PANDEMONIUM ENGINE                           */
/*             https://github.com/Relintai/pandemonium_engine            */
/*************************************************************************/
/* Copyright (c) 2022-present Péter Magyar.                              */
/* Copyright (c) 2014-2022 Godot Engine contributors (cf. AUTHORS.md).   */
/* Copyright (c) 2007-2022 Juan Linietsky, Ariel Manzur.                 */
/*                                                                       */
/* 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    */
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/*************************************************************************/

#include "error_macros.h"
#include "math_funcs.h"

#include "vector2.h"

class String;

struct _NO_DISCARD_CLASS_ Vector2i {
	enum Axis {
		AXIS_X,
		AXIS_Y,
	};

	union {
		struct {
			union {
				int x;
				int width;
			};
			union {
				int y;
				int height;
			};
		};

		int coord[2];
	};

	_FORCE_INLINE_ int &operator[](int p_idx) {
		DEV_ASSERT((unsigned int)p_idx < 2);
		return coord[p_idx];
	}
	_FORCE_INLINE_ const int &operator[](int p_idx) const {
		DEV_ASSERT((unsigned int)p_idx < 2);
		return coord[p_idx];
	}

	_FORCE_INLINE_ void set_all(int p_value) {
		x = y = p_value;
	}

	_FORCE_INLINE_ int min_axis() const {
		return x < y ? 0 : 1;
	}

	_FORCE_INLINE_ int max_axis() const {
		return x < y ? 1 : 0;
	}

	Vector2i min(const Vector2i &p_vector2i) const {
		return Vector2i(MIN(x, p_vector2i.x), MIN(y, p_vector2i.y));
	}

	Vector2i max(const Vector2i &p_vector2i) const {
		return Vector2i(MAX(x, p_vector2i.x), MAX(y, p_vector2i.y));
	}

	_FORCE_INLINE_ static Vector2i linear_interpolate(const Vector2i &p_a, const Vector2i &p_b, real_t p_weight);
	_FORCE_INLINE_ Vector2i linear_interpolate(const Vector2i &p_to, real_t p_weight) const;

	Vector2i operator+(const Vector2i &p_v) const;
	void operator+=(const Vector2i &p_v);
	Vector2i operator-(const Vector2i &p_v) const;
	void operator-=(const Vector2i &p_v);
	Vector2i operator*(const Vector2i &p_v1) const;

	Vector2i operator*(const int &rvalue) const;
	void operator*=(const int &rvalue);

	Vector2i operator/(const Vector2i &p_v1) const;

	Vector2i operator/(const int &rvalue) const;

	void operator/=(const int &rvalue);

	Vector2i operator-() const;
	bool operator<(const Vector2i &p_vec2) const { return (x == p_vec2.x) ? (y < p_vec2.y) : (x < p_vec2.x); }
	bool operator>(const Vector2i &p_vec2) const { return (x == p_vec2.x) ? (y > p_vec2.y) : (x > p_vec2.x); }
	bool operator<=(const Vector2 &p_vec2) const { return x == p_vec2.x ? (y <= p_vec2.y) : (x < p_vec2.x); }
	bool operator>=(const Vector2 &p_vec2) const { return x == p_vec2.x ? (y >= p_vec2.y) : (x > p_vec2.x); }

	bool operator==(const Vector2i &p_vec2) const;
	bool operator!=(const Vector2i &p_vec2) const;

	int64_t length_squared() const;
	double length() const;

	real_t aspect() const { return width / (real_t)height; }
	Vector2i sign() const { return Vector2i(SGN(x), SGN(y)); }
	Vector2i abs() const { return Vector2i(ABS(x), ABS(y)); }
	Vector2i clamp(const Vector2i &p_min, const Vector2i &p_max) const;

	Vector2 to_vector2() const { return Vector2(x, y); }

	operator String() const;
	operator Vector2() const { return Vector2(x, y); }

	inline Vector2i(const Vector2 &p_vec2) {
		x = (int)p_vec2.x;
		y = (int)p_vec2.y;
	}
	inline Vector2i(int p_x, int p_y) {
		x = p_x;
		y = p_y;
	}
	inline Vector2i() {
		x = 0;
		y = 0;
	}
};

Vector2i Vector2i::linear_interpolate(const Vector2i &p_a, const Vector2i &p_b, real_t p_weight) {
	Vector2i res = p_a;

	res.x += (p_weight * (p_b.x - p_a.x));
	res.y += (p_weight * (p_b.y - p_a.y));

	return res;
}

Vector2i Vector2i::linear_interpolate(const Vector2i &p_to, real_t p_weight) const {
	Vector2 res = *this;

	res.x += (p_weight * (p_to.x - x));
	res.y += (p_weight * (p_to.y - y));

	return res;
}

typedef Vector2i Size2i;
typedef Vector2i Point2i;

#endif // VECTOR2_H