#include <blaze/Math.h>
#include <iostream>

using namespace std;
using namespace blaze;

void ror(auto &vec)
{
	vec = elements(vec, [size=vec.size()](size_t i){ return (i-1) % size; }, vec.size());
}

void rol(auto &vec)
{
	vec = elements(vec, [size=vec.size()](size_t i){ return (i+1) % size; }, vec.size());
}

void insert_left(auto &vec, auto const &x)
{
	ror(vec);
	vec[0] = x;
}

void insert_right(auto &vec, auto const &x)
{
	rol(vec);
	vec[vec.size()-1] = x;
}

void shift()
{

	{
		cout << "Shift ROL with index vector : " << endl;
		DynamicVector<int, rowVector> vec = { 0, 0, 0, 0, 0, 0, 0, 1 };
		cout << "vec : " << endl;
		for (int i=0; i < vec.size(); i++)
		{
			cout << vec;
			std::vector<size_t> idx = {0};
			idx.resize(vec.size());
			size_t k=1;
			for (auto i=idx.begin(); i != idx.end()-1; i++)
			{
				*i = k++;
			}
			vec = elements(vec, idx);
		}
	}
	{
		cout << "Shift ROR with index vector : " << endl;
		DynamicVector<int, rowVector> vec = { 1, 0, 0, 0, 0, 0, 0, 0 };
		cout << "vec : " << endl;
		for (int i=0; i < vec.size(); i++)
		{
			cout << vec;
			std::vector<size_t> idx = {vec.size()-1};
			idx.resize(vec.size());
			size_t k=0;
			for (auto i=idx.begin()+1; i != idx.end(); i++)
			{
				*i = k++;
			}
			vec = elements(vec, idx);
		}
	}
	{
		cout << "Shift ROL with lambda : " << endl;
		DynamicVector<int, rowVector> vec = { 0, 0, 0, 0, 0, 0, 0, 1 };
		cout << "vec : " << endl;
		for (int i=0; i < vec.size(); i++)
		{
			cout << vec;
			vec = elements(vec, [size=vec.size()](size_t i){ return (i+1) % size; }, vec.size());
		}
	}
	{
		cout << "Shift ROR with lambda : " << endl;
		DynamicVector<int, rowVector> vec = { 1, 0, 0, 0, 0, 0, 0, 0 };
		cout << "vec : " << endl;
		for (int i=0; i < vec.size(); i++)
		{
			cout << vec;
			vec = elements(vec, [size=vec.size()](size_t i){ return (i-1) % size; }, vec.size());
		}
	}
	{
		cout << "insert_left : " << endl;
		DynamicVector<int, rowVector> vec = { 0, 0, 0, 0, 0, 0, 0, 0 };
		for (int i=1; i <= vec.size(); i++)
		{
			cout << vec;
			insert_left(vec, i);
		}
	}
	{
		cout << "insert_right : " << endl;
		DynamicVector<int, rowVector> vec = { 0, 0, 0, 0, 0, 0, 0, 0 };
		for (int i=1; i <= vec.size(); i++)
		{
			cout << vec;
			insert_right(vec, i);
		}
	}
	{
		cout << "subvector insert_left : " << endl;
		DynamicVector<int, rowVector> vec = { 0, 0, 0, 0, 0, 0, 0, 0 };
		for (int i=1; i <= vec.size(); i++)
		{
			auto sv1 = subvector(vec, 0, 5);
			insert_left(sv1, i+10);
			auto sv2 = subvector(vec, 5, 3);
			insert_left(sv2, i+100);
			cout << vec;
		}
	}

}