// Minimal Arduino API for running the Nano code on the PC (native test environment)
#pragma once

#include <cstdint>
#include <cstdio>
#include <cstdlib>
#include <cstring>
#include <deque>
#include <string>

#define HEX 16

class __FlashStringHelper;
#define F(s) ((const __FlashStringHelper *)(s))

// Time is controlled by the tests
inline uint32_t fake_millis = 0;
inline uint32_t millis() { return fake_millis; }
inline void delay(uint32_t ms) { fake_millis += ms; }

// Serial port: tests push bytes into `in` and read replies from `out`
class FakeSerial
{
public:
	std::deque<char> in;
	std::string out;

	void begin(unsigned long) {}
	int available() { return in.size(); }
	int read()
	{
		if (in.empty())
			return -1;
		char c = in.front();
		in.pop_front();
		return (uint8_t)c;
	}
	void flush() {}

	void print(const __FlashStringHelper *s) { out += (const char *)s; }
	void print(const char *s) { out += s; }
	void print(int v, int base = 10)
	{
		char buf[16];
		snprintf(buf, sizeof(buf), base == HEX ? "%X" : "%d", v);
		out += buf;
	}
	void println(const __FlashStringHelper *s) { print(s); out += "\n"; }
	void println(const char *s) { print(s); out += "\n"; }
	void println(unsigned long v) { out += std::to_string(v) + "\n"; }
};

using Print = FakeSerial;

inline FakeSerial Serial;