#include <regex.h>
#include "vex_if.h"

double VexIF::getLowerEdgeFreq() const
{
	double bandCenter = ifSSLO;

	// Calculate the center of the 500-1000 MHz IF range;
	if(ifSideBand == 'L')
	{
		bandCenter -= 750.0e6;
	}
	else
	{
		bandCenter += 750.0e6;
	}

	return bandCenter - 500.0e6;
}

std::string VexIF::bandName() const
{
	regex_t rxMatch;
	regmatch_t matchPtr[2];
	// Look for a name based on a comment in the Vex file

	if(comment.empty())
	{
		return "";
	}

	regcomp(&rxMatch, " ([0-9]+[cm]m) ", REG_EXTENDED);

	if(regexec(&rxMatch, comment.c_str(), 2, matchPtr, 0) == 0)
	{
		char buffer[8];
		int len = matchPtr[1].rm_eo-matchPtr[1].rm_so;

		comment.copy(buffer, len, matchPtr[1].rm_so);
		buffer[len] = 0;
		
		regfree(&rxMatch);

		return buffer;
	}

	regfree(&rxMatch);

	return "";
}

std::string VexIF::VLBABandName() const
{
	double bandCenter = ifSSLO;
	
	std::string bn = bandName();
	if(!bn.empty())
	{
		return bn;
	}

	// Calculate the center of the 500-1000 MHz IF range;
	if(ifSideBand == 'L')
	{
		bandCenter -= 750.0e6;
	}
	else
	{
		bandCenter += 750.0e6;
	}

	if(bandCenter < 1.0e9)
	{
		return "90cm";
	}
	else if(bandCenter < 2.0e9)
	{
		return "20cm";
	}
	else if(bandCenter < 3.0e9)
	{
		return "13cm";
	}
	else if(bandCenter < 7.9e9)
	{
		return "6cm";
	}
	else if(bandCenter < 9.5e9)
	{
		return "4cm";
	}
	else if(bandCenter < 17.0e9)
	{
		return "2cm";
	}
	else if(bandCenter < 25.0e9)
	{
		return "1cm";
	}
	else if(bandCenter < 40.5e9)
	{
		return "9mm";
	}
	else if(bandCenter < 60.0e9)
	{
		return "7mm";
	}
	else if(bandCenter < 100.0e9)
	{
		return "3mm";
	}

	return "None";
}

std::ostream& operator << (std::ostream &os, const VexIF &x)
{
	os << "[name=" << x.name << ", SSLO=" << x.ifSSLO << ", sb=" << x.ifSideBand << ", pol=" << x.pol << ", phaseCalInterval=" << x.phaseCalIntervalMHz << " MHz]";

	return os;
}