#include <climits>
#include <cstdint>
#include <cstdlib>
#include <exception>
#include <iostream>
#include <limits>
#include <typeinfo>
#include <zp/mem>
#include <zp/mth>
#include <zp/str>

#if !zp_std_cxx17
#error At least C++17 is required for this test!
#endif

static_assert(::zp::isptr<int>::val                                  == false);
static_assert(::zp::isptr<int                *>::val                 == true);
static_assert(::zp::isptr<int const          *>::val                 == true);
static_assert(::zp::isptr<int volatile       *>::val                 == true);
static_assert(::zp::isptr<int const volatile *>::val                 == true);
static_assert(::zp::isptr<int                * const>::val           == true);
static_assert(::zp::isptr<int const          * const>::val           == true);
static_assert(::zp::isptr<int volatile       * const>::val           == true);
static_assert(::zp::isptr<int const volatile * const>::val           == true);
static_assert(::zp::isptr<int                * volatile>::val        == true);
static_assert(::zp::isptr<int const          * volatile>::val        == true);
static_assert(::zp::isptr<int volatile       * volatile>::val        == true);
static_assert(::zp::isptr<int const volatile * volatile>::val        == true);
static_assert(::zp::isptr<int                * const volatile>::val  == true);
static_assert(::zp::isptr<int const          * const volatile>::val  == true);
static_assert(::zp::isptr<int volatile       * const volatile>::val  == true);
static_assert(::zp::isptr<int const volatile * const volatile>::val  == true);

static_assert(::zp::typequ<int,int>::val  == true);
static_assert(::zp::typequ<int,int long>::val == false);

static_assert(::zp::typequ<::zp::i8,  ::std::uint8_t>::val  == true);
static_assert(::zp::typequ<::zp::i8s, ::std::int8_t>::val   == true);
static_assert(::zp::typequ<::zp::i01, ::std::uint16_t>::val == true);
static_assert(::zp::typequ<::zp::i01s,::std::int16_t>::val  == true);
static_assert(::zp::typequ<::zp::i02, ::std::uint32_t>::val == true);
static_assert(::zp::typequ<::zp::i02s,::std::int32_t>::val  == true);
static_assert(::zp::typequ<::zp::i04, ::std::uint64_t>::val == true);
static_assert(::zp::typequ<::zp::i04s,::std::int64_t>::val  == true);

static_assert(::zp::typequ<::zp::ptr,   ::std::uintptr_t>::val == true);
static_assert(::zp::typequ<::zp::ptrdif,::std::ptrdiff_t>::val == true);
static_assert(::zp::typequ<::zp::siz,   ::std::size_t>::val    == true);

static_assert(::zp::typequ<::zp::remref<int>::typ,  int>::val == true);
static_assert(::zp::typequ<::zp::remref<int &>::typ,int>::val == true);

static_assert(::zp::typequ<::zp::remptr<int>::typ,                 int>::val == true);
static_assert(::zp::typequ<::zp::remptr<int *>::typ,               int>::val == true);
static_assert(::zp::typequ<::zp::remptr<int * const>::typ,         int>::val == true);
static_assert(::zp::typequ<::zp::remptr<int * volatile>::typ,      int>::val == true);
static_assert(::zp::typequ<::zp::remptr<int * const volatile>::typ,int>::val == true);

static_assert(::zp::typequ<::zp::remqual<int>::typ,               int>::val == true);
static_assert(::zp::typequ<::zp::remqual<int const>::typ,         int>::val == true);
static_assert(::zp::typequ<::zp::remqual<int volatile>::typ,      int>::val == true);
static_assert(::zp::typequ<::zp::remqual<int const volatile>::typ,int>::val == true);

static_assert(::zp::typequ<::zp::sgn<int>::typ,                        int>::val                == true);
static_assert(::zp::typequ<::zp::sgn<int const>::typ,                  int const>::val          == true);
static_assert(::zp::typequ<::zp::sgn<int volatile>::typ,               int volatile>::val       == true);
static_assert(::zp::typequ<::zp::sgn<int const volatile>::typ,         int const volatile>::val == true);
static_assert(::zp::typequ<::zp::sgn<int unsigned>::typ,               int>::val                == true);
static_assert(::zp::typequ<::zp::sgn<int unsigned const>::typ,         int const>::val          == true);
static_assert(::zp::typequ<::zp::sgn<int unsigned volatile>::typ,      int volatile>::val       == true);
static_assert(::zp::typequ<::zp::sgn<int unsigned const volatile>::typ,int const volatile>::val == true);

static_assert(::zp::typequ<::zp::usgn<int unsigned>::typ,               int unsigned>::val                == true);
static_assert(::zp::typequ<::zp::usgn<int unsigned const>::typ,         int unsigned const>::val          == true);
static_assert(::zp::typequ<::zp::usgn<int unsigned volatile>::typ,      int unsigned volatile>::val       == true);
static_assert(::zp::typequ<::zp::usgn<int unsigned const volatile>::typ,int unsigned const volatile>::val == true);
static_assert(::zp::typequ<::zp::usgn<int>::typ,                        int unsigned>::val                == true);
static_assert(::zp::typequ<::zp::usgn<int const>::typ,                  int unsigned const>::val          == true);
static_assert(::zp::typequ<::zp::usgn<int volatile>::typ,               int unsigned volatile>::val       == true);
static_assert(::zp::typequ<::zp::usgn<int const volatile>::typ,         int unsigned const volatile>::val == true);

static_assert(::zp::typequ<::zp::nulptrtyp,::std::nullptr_t>::val == true);

static_assert(::zp::isusgn<char>::val                   == ::std::is_unsigned<char>::value);
static_assert(::zp::isusgn<char16_t>::val               == ::std::is_unsigned<char16_t>::value);
static_assert(::zp::isusgn<char32_t>::val               == ::std::is_unsigned<char32_t>::value);
static_assert(::zp::isusgn<::zp::c8>::val               == ::std::is_unsigned<::zp::c8>::value);
static_assert(::zp::isusgn<double>::val                 == ::std::is_unsigned<double>::value);
static_assert(::zp::isusgn<float>::val                  == ::std::is_unsigned<float>::value);
static_assert(::zp::isusgn<int>::val                    == ::std::is_unsigned<int>::value);
static_assert(::zp::isusgn<int long>::val               == ::std::is_unsigned<int long>::value);
static_assert(::zp::isusgn<double long>::val            == ::std::is_unsigned<double long>::value);
static_assert(::zp::isusgn<int long long>::val          == ::std::is_unsigned<int long long>::value);
static_assert(::zp::isusgn<int short>::val              == ::std::is_unsigned<int short>::value);
static_assert(::zp::isusgn<char signed>::val            == ::std::is_unsigned<char signed>::value);
static_assert(::zp::isusgn<char unsigned>::val          == ::std::is_unsigned<char unsigned>::value);
static_assert(::zp::isusgn<int unsigned>::val           == ::std::is_unsigned<int unsigned>::value);
static_assert(::zp::isusgn<int long unsigned>::val      == ::std::is_unsigned<int long unsigned>::value);
static_assert(::zp::isusgn<int long long unsigned>::val == ::std::is_unsigned<int long long unsigned>::value);
static_assert(::zp::isusgn<int short unsigned>::val     == ::std::is_unsigned<int short unsigned>::value);
static_assert(::zp::isusgn<wchar_t>::val                == ::std::is_unsigned<wchar_t>::value);		

static_assert(::zp::issgn<char>::val                   == ::std::is_signed<char>::value);
static_assert(::zp::issgn<double>::val                 == ::std::is_signed<double>::value);
static_assert(::zp::issgn<float>::val                  == ::std::is_signed<float>::value);
static_assert(::zp::issgn<int>::val                    == ::std::is_signed<int>::value);
static_assert(::zp::issgn<int long>::val               == ::std::is_signed<int long>::value);
static_assert(::zp::issgn<double long>::val            == ::std::is_signed<double long>::value);
static_assert(::zp::issgn<int long long>::val          == ::std::is_signed<int long long>::value);
static_assert(::zp::issgn<int short>::val              == ::std::is_signed<int short>::value);
static_assert(::zp::issgn<char signed>::val            == ::std::is_signed<char signed>::value);
static_assert(::zp::issgn<char unsigned>::val          == ::std::is_signed<char unsigned>::value);
static_assert(::zp::issgn<int unsigned>::val           == ::std::is_signed<int unsigned>::value);
static_assert(::zp::issgn<int long unsigned>::val      == ::std::is_signed<int long unsigned>::value);
static_assert(::zp::issgn<int long long unsigned>::val == ::std::is_signed<int long long unsigned>::value);
static_assert(::zp::issgn<int short unsigned>::val     == ::std::is_signed<int short unsigned>::value);
static_assert(::zp::issgn<wchar_t>::val                == ::std::is_signed<wchar_t>::value);

static_assert(::zp::bytelen == CHAR_BIT);

static_assert(::zp::minval<bool>::val                   == ::std::numeric_limits<bool>::lowest());
static_assert(::zp::minval<char>::val                   == ::std::numeric_limits<char>::lowest());
static_assert(::zp::minval<char16_t>::val               == ::std::numeric_limits<char16_t>::lowest());
static_assert(::zp::minval<char32_t>::val               == ::std::numeric_limits<char32_t>::lowest());
static_assert(::zp::minval<::zp::c8>::val               == ::std::numeric_limits<::zp::c8>::lowest());
static_assert(::zp::minval<double>::val                 == ::std::numeric_limits<double>::lowest());
static_assert(::zp::minval<float>::val                  == ::std::numeric_limits<float>::lowest());
static_assert(::zp::minval<int>::val                    == ::std::numeric_limits<int>::lowest());
static_assert(::zp::minval<int long>::val               == ::std::numeric_limits<int long>::lowest());
static_assert(::zp::minval<double long>::val            == ::std::numeric_limits<double long>::lowest());
static_assert(::zp::minval<int long long>::val          == ::std::numeric_limits<int long long>::lowest());
static_assert(::zp::minval<int short>::val              == ::std::numeric_limits<int short>::lowest());
static_assert(::zp::minval<char signed>::val            == ::std::numeric_limits<char signed>::lowest());
static_assert(::zp::minval<char unsigned>::val          == ::std::numeric_limits<char unsigned>::lowest());
static_assert(::zp::minval<int short unsigned>::val     == ::std::numeric_limits<int short unsigned>::lowest());
static_assert(::zp::minval<int unsigned>::val           == ::std::numeric_limits<int unsigned>::lowest());
static_assert(::zp::minval<int long unsigned>::val      == ::std::numeric_limits<int long unsigned>::lowest());
static_assert(::zp::minval<int long long unsigned>::val == ::std::numeric_limits<int long long unsigned>::lowest());
static_assert(::zp::minval<wchar_t>::val                == ::std::numeric_limits<wchar_t>::lowest());

static_assert(::zp::maxval<bool>::val                   == ::std::numeric_limits<bool>::max());
static_assert(::zp::maxval<char>::val                   == ::std::numeric_limits<char>::max());
static_assert(::zp::maxval<char16_t>::val               == ::std::numeric_limits<char16_t>::max());
static_assert(::zp::maxval<char32_t>::val               == ::std::numeric_limits<char32_t>::max());
static_assert(::zp::maxval<::zp::c8>::val               == ::std::numeric_limits<::zp::c8>::max());
static_assert(::zp::maxval<double>::val                 == ::std::numeric_limits<double>::max());
static_assert(::zp::maxval<float>::val                  == ::std::numeric_limits<float>::max());
static_assert(::zp::maxval<int>::val                    == ::std::numeric_limits<int>::max());
static_assert(::zp::maxval<int long>::val               == ::std::numeric_limits<int long>::max());
static_assert(::zp::maxval<double long>::val            == ::std::numeric_limits<double long>::max());
static_assert(::zp::maxval<int long long>::val          == ::std::numeric_limits<int long long>::max());
static_assert(::zp::maxval<int short>::val              == ::std::numeric_limits<int short>::max());
static_assert(::zp::maxval<char signed>::val            == ::std::numeric_limits<char signed>::max());
static_assert(::zp::maxval<char unsigned>::val          == ::std::numeric_limits<char unsigned>::max());
static_assert(::zp::maxval<int short unsigned>::val     == ::std::numeric_limits<int short unsigned>::max());
static_assert(::zp::maxval<int unsigned>::val           == ::std::numeric_limits<int unsigned>::max());
static_assert(::zp::maxval<int long unsigned>::val      == ::std::numeric_limits<int long unsigned>::max());
static_assert(::zp::maxval<int long long unsigned>::val == ::std::numeric_limits<int long long unsigned>::max());
static_assert(::zp::maxval<wchar_t>::val                == ::std::numeric_limits<wchar_t>::max());

template<typename ltyp,typename rtyp> static auto cmp(int unsigned & numerr,int long const ln,ltyp const & lvalref,rtyp const & rvalref) noexcept {
	char const* const ltypnm = typeid (ltyp).name();
	char const* const rtypnm = typeid (rtyp).name();

	auto const getval = [](auto const & valref) {
		using typ = typename ::zp::remqual<typename ::zp::remref<decltype (valref)>::typ>::typ;

		if constexpr      (::zp::ischrtyp<typ>::val) {return static_cast<::zp::i02>(valref);}
		else if constexpr (::zp::isptr<typ>::val)    {return reinterpret_cast<void *>(valref);}
		else                                         {return valref;}
	};

	auto const lval = getval(lvalref);
	auto const rval = getval(rvalref);

	::std::cout << "  " << ln << ". comparing " << ltypnm << " (" << lval << ") vs. " << rtypnm << " (" << rval << ")... ";

	if (lval != rval) {
		::std::cout << "\x1B[38;5;161munequal\x1B[0m\n";
		//throw ::std::exception {};
		++numerr;

		return;
	}

	::std::cout <<"\x1B[38;5;77mequal\x1B[0m\n";
}

#define cmp(lval,rval) (::cmp(numerr,__LINE__,(lval),(rval)))

int main() {
	int unsigned numerr = 0x0u;

	auto const tst = [](char const* const tst) noexcept {
		::std::cout <<"\n\x1B[38;5;75mtesting\x1B[0m " << tst <<"\n\n";
	};

	::std::cout <<"zp " <<::zp::ver.api <<"." <<::zp::ver.ext <<", run-time test\n";

	try {
#if false
		[&] {
			tst("optionals");

			::zp::opt<::zp::i8s> opt = ::zp::nulopt;

			cmp(opt.chk(),false);

			auto const fun = [](char const* msg) -> void {
				::std::cout << msg << ::std::endl;

				::std::abort();
			};

			opt = -0x45;

			cmp(opt.chk(),true);
			cmp(opt.exp(fun,"expectation failed"),-0x45);
		}();
#endif

		[&] {
			tst("special numbers");

			::zp::f02 f02;
			::zp::f04 f04;

			cmp(sizeof (f02),0x4u);
			cmp(sizeof (f04),0x8u);

			f02 = ::zp::nan<::zp::f02>::val;
			f04 = ::zp::nan<::zp::f04>::val;

			cmp(::zp::isnan(f02),true);
			cmp(::zp::isnan(f04),true);

			f02 = ::zp::inf<::zp::f02>::val;
			f04 = ::zp::inf<::zp::f04>::val;

			cmp(f02 > ::zp::maxval<::zp::f02>::val,true);
			cmp(f04 > ::zp::maxval<::zp::f04>::val,true);
		}();

		[&] {
			tst("mathematics");
		}();

		/*[&] {
			tst("vectors");

			::zp::vec2<int> const lvec2 = {
				.x = +0x1,
				.y = -0x3,
			};
			::zp::vec2<int> const rvec2 = {
				.x = +0x2,
				.y = -0x4,
			};
			cmp(::zp::dot(lvec2,rvec2),0xE);

			::zp::vec3<int> const lvec3 = {
				.x = +0x1,
				.y = -0x3,
				.z = +0x5,
			};
			::zp::vec3<int> const rvec3 = {
				.x = +0x2,
				.y = -0x4,
				.z = +0x6,
			};
			cmp(::zp::dot(lvec3,rvec3),0x2C);

			::zp::vec4<int> const lvec4 = {
				.x = +0x1,
				.y = -0x3,
				.z = +0x5,
				.w = -0x7,
			};
			::zp::vec4<int> const rvec4 = {
				.x = +0x2,
				.y = -0x4,
				.z = +0x6,
				.w = -0x8,
			};
			cmp(::zp::dot(lvec4,rvec4),0x64);

			auto const avec2 = ::zp::vadd(lvec2,rvec2);
			auto const svec2 = ::zp::vsub(lvec2,rvec2);
			cmp(avec2.x,+0x3);
			cmp(avec2.y,-0x7);
			cmp(svec2.x,-0x1);
			cmp(svec2.y,+0x1);
		}();*/

		[&] {
			tst("memory sequences");

			::zp::i04 filbuf;

			cmp(::zp::memfil(&filbuf,0xFFu,0x8u),reinterpret_cast<char unsigned *>(&filbuf)+0x8u);
			cmp(::zp::memfil(&filbuf,0x7Fu,0x4u),reinterpret_cast<char unsigned *>(&filbuf)+0x4u);
			cmp(::zp::memfil(&filbuf,0x3Fu,0x2u),reinterpret_cast<char unsigned *>(&filbuf)+0x2u);
			cmp(::zp::memfil(&filbuf,0x1Fu,0x1u),reinterpret_cast<char unsigned *>(&filbuf)+0x1u);

			cmp(filbuf,0xFFFFFFFF7F7F3F1Fu);

			::zp::i04 cpybuf;
			::zp::memcpy(&cpybuf,&filbuf,0x8u);

			cmp(cpybuf,filbuf);

			cmp(::zp::memsrh(&cpybuf,0x1Fu,0x8u),reinterpret_cast<char unsigned *>(&cpybuf));
		}();

		[&] {
			tst("strings");

			char     str[]   = "Hello there!";
			wchar_t  wstr[]  = L"Hello there!";
			char32_t str02[] = U"Hello there!";

			::zp::siz const len   = ::zp_strlen(  str);
			::zp::siz const wlen  = ::zp_wstrlen( wstr);
			::zp::siz const len02 = ::zp_utf32len(str02);

			cmp(len,  0xCu);
			cmp(wlen, 0xCu);
			cmp(len02,0xCu);

			auto const buf   = new char[    len];
			auto const wbuf  = new wchar_t[ wlen];
			auto const buf02 = new char32_t[len02];

			cmp(::zp_strcpy(  buf,  str),  len);
			cmp(::zp_wstrcpy( wbuf, wstr), wlen);
			cmp(::zp_utf32cpy(buf02,str02),len02);

			delete[] buf;
			delete[] wbuf;
			delete[] buf02;
		}();

		[&] {
			tst("UTF-8");

			char32_t const src[] = U"\U0001F480";

			::zp::siz const buf8len = ::zp_utf8enclen(src);
			cmp(buf8len,0x4u);
			
			::zp::c8 * buf8 = new ::zp::c8[buf8len+0x1];

			::zp_utf8enc(buf8,src);

			cmp(buf8[0x0],0xF0u);
			cmp(buf8[0x1],0x9Fu);
			cmp(buf8[0x2],0x92u);
			cmp(buf8[0x3],0x80u);
			cmp(buf8[0x4],0x00u);

			::zp::siz const buf02len = ::zp_utf8declen(buf8);
			cmp(buf02len,0x1u);

			char32_t * buf02 = new char32_t[buf02len+0x1];

			::zp_utf8dec(buf02,buf8);

			cmp(buf02[0x0],0x1F480u);
			cmp(buf02[0x1],0x0u);

			delete[] buf8;
			delete[] buf02;
		}();

		[&] {
			tst("UTF-16");

			char32_t const src[] = U"\U0001F480\u00F0";

			::zp::siz const buf01len = ::zp_utf16enclen(src);
			cmp(buf01len,0x3u);
			
			char16_t * buf01 = new char16_t[buf01len+0x1];

			::zp_utf16enc(buf01,src);

			cmp(buf01[0x0],0xD83Du);
			cmp(buf01[0x1],0xDC80u);
			cmp(buf01[0x2],0x00F0u);
			cmp(buf01[0x3],0x0000u);

			::zp::siz const buf02len = ::zp_utf16declen(buf01);
			cmp(buf02len,0x2u);

			char32_t * buf02 = new char32_t[buf02len+0x1];

			::zp_utf16dec(buf02,buf01);

			cmp(buf02[0x0],0x1F480u);
			cmp(buf02[0x1],0xF0u);
			cmp(buf02[0x2],0x0u);

			delete[] buf01;
			delete[] buf02;
		}();
	}
	catch (::std::exception const &) {
		return EXIT_FAILURE;
	}

	::std::cout <<"\nDone \u2212 " <<numerr <<" error(s)\n";

	return numerr ? EXIT_FAILURE : EXIT_SUCCESS;
}