// Bob Hanson hansonr@stolaf.edu

// 1604 subGroups; 3767 settings

// a bit of hardwiring:

targetDir = "c:/temp/bilbao/subgroups/";

// variables for the createJSONFiles call (below), after the functions

itadelay = 0.1;
itaFirst = 0;
itaForceNew = false;
htmlOnly = true;
maxindex = 4;
nsubs = 0;
ntrm = 0;
// only one function to run here:
function createSubJSONFiles(n, forceNew) {

	nsubs = 0;
	ntrm = 0;

	// creates ita_<i>.json, by space group

	// n option to start at a given number (-30), or only a certain number (30), or all (0)
	// forceNew option true to overwrite local files; false to use them if they are there.

	var allTransforms = [["i", "cleg", "tr_type", "tr_subtype" "det", "index", "conj_class"]]
	for (var i = 1; i <= 230; i++) {
		if (n < 0 && i < -n || n > 0 && i != n) {
			continue;
		}
		var adata = {"sg":i, "created":now("").trim()};
		_getAllSubs(i, adata, allTransforms);
		var thedata = adata.format("JSON");
		var fname = targetDir + "json/sub_" + i + ".json";
		write var thedata @fname;


	}

	if (n == 0 || n == -1) {

		var thedata = allTransforms.join("\t",TRUE);
		var fname = targetDir + "txt/cleg_subgroups.txt";
		write var thedata @fname;

		print "DONE " + nsubs + " subGroups; " + ntrm + " cleg";

	}

}

function _getAllSubs(group, adata, allTransforms) {
	var subs = [];
	adata.subgroups = subs;
	// split by buttons
	var y = _getSubDataHTM(group, 0, "sub", "", forceNew).split('<a href="nph-lxi');
	var groupHM = _fixName(y[1].split("Maximal subgroups of group ")[2].split("(No.")[1]);
	adata.HM = groupHM;
	var isub = 0;
	var nt = 0;
	for (var j = 1; j < y.length; j++) {
		var gdata = y[j + 1];
		var href = _getField(gdata, "href", 1000);
		var sindex = _getField(href, "index");
		if (0 + sindex > maxIndex) continue;
		isub++;
		var subgroup = _getField(href, "sub");
		var stype = _getField(href, "type");
		var subtype = stype[2][0];
		stype = stype[1];
		var hm = _fixName(gdata.split("<i>")[2].split("</td>")[1]);
		var a = {"i":0+isub,
			"subgroup":0+subgroup, 
			"subgroupHM":hm, 
			"trType":stype, 
			"trSubtype": subtype,
			"subgroupIndex":0+sindex};//, "url": "" + href};
		// name="trm" value="%31%2F%32x%2B%31%2F%32y%2C%2D%31%2F%32x%2B%31%2F%32y%2Cz"
		var sdata = _getSubDataHTM(group, isub, "sub", href, forcenew).split('"trm"');
		var transforms = [];
	
		//<small> Conjugacy class a</small>
		var s = sdata[1];
		var sdet;
		for (var t = 2; t <= sdata.length; t++) {
			nt++;
			var ac = s.split("> Conjugacy class ");
			if (ac[2])
				conjClass = ac[2].split("<")[1].trim();
			s = sdata[t];
			var xyz = _fixURI(_getField(s,"value"));
			var tabc = _toTransform(xyz);
			sdet = unitcell(tabc,true)%1%2;
			var abc = conjClass + ":" + tabc;// + "=" + xyz;
			transforms.push(abc);
			allTransforms.push([ntrm + nt, "" + group + ">" + tabc + ">" + subgroup, stype, subtype, sdet, sindex, conjClass]); 
		}
		a["det"] = sdet;
		a["trm"] = transforms;
		subs.push(a);
	}
	adata.HM = groupHM;
	adata.nSubgroups = subs.length;
	adata.nSettings = nt;
	nsubs += subs.length;
	ntrm = += nt;
}

// all other functions are "private" to this script

function _getSubDataHTM(i, j, what, url0, forceNew) {

//https://www.cryst.ehu.es/cgi-bin/cryst/programs/nph-lxi?submit=choose+it&gnum=90

	var localFile = targetDir + "data/" + what + "_" + i + if(j;"_"+j+".html";".htm");
	var url = if(url0;url0;"nph-lxi?submit=choose+it&gnum=" + i);
	url = if(forceNew ; "https://www.cryst.ehu.es/cgi-bin/cryst/programs/" + url;  localFile);

	print url;
	delay @itadelay;
	var gdata = load(url);
	if (forceNew) {
		write var gdata @localFile;
	} else if (gdata.find("FileNotFound")) {
		gdata = _getSubDataHTM(i, j, what, url0, true);
	}
	return gdata;
}

function _getField(gdata, field, max) {
	
	if (!max) max = 0;

	// get a &... field form a URL

	var ret;
	var i = gdata.find(field + "=");
	if (i == 0) return "";
	gdata = gdata[i + field.length + 1][0];
	if (gdata[1] == '"') {
		return gdata.split('"')[2];	
	} 
	return (gdata[1][max] + "&").split("&")[1];
}

// utility methods

function _fixName(s) {

	// remove HTML markings

	return (s.trim()
		.replace("<i>","").replace("</i>","")
		.replace("<b>","").replace("</b>","")
		.replace("<sub>","").replace("</sub>","")
		.replace("&#124;","|")).replace("  "," ");
}


function _fixURI(s) {
	s = s.replace('%3A',':').replace('%3B',';').replace('%3','').replace('%2F','/').replace('%2B','+').replace('%2C',',')
	return s.replace('%2D','-').replace('%2E','.').replace('%28','(').replace('%29',')').replace('%20',' ')
}

m40 = [[0 0 0 0][0 0 0 0][0 0 0 0][0 0 0 1]];

function _toTransform(xyz){ 
	// 1 0 -1 | 0
	// 0 1  0 | 0
	// 0 0  2 | 1/2
	// 
	// x-z,y,2z+1/2 to "a,b,-a+2c;0,0,1/2 (transposed)
	// a,b,-a+2c+1/2 also to "a,b,-a+2c;0,0,1/2 (not transposed)

	// the function unitcell() runs org.jmol.symmetry.UnitCell.getMatrixAndUnitCell()
	// unitcell() removes any embedded translations and puts the rotation in xyz-row,abc column format
	// we get any embedded translation using symop()

	var m = -unitcell(xyz, true);
	var abc = symop(m, "xyz").replace('x','a').replace('y','b').replace('z','c');

	var t = symop(xyz, "matrix")%2;
	if (t == 0) {
		return abc;
	}
	return abc + ";" + symop(m40 + t, "xyz");
}

function _toXYZ(abc, asTrm){

	// getGen needs the transposed matrix, in xyz format. 
	// this does the trick, as -m4 is the transpose of m4, and symop(matrix, "xyz") 
 	// will accept a,b,c and return x,y,z
	// check for translation and don't transpose that

	var a = symop(abc, "matrix");
	var t = a%2; // get translation vector
	if (1.0 * t == 0) {
		// transpose if no translation
		a = -a;
	} else {
		// remove translation from 4x4, transpose it, then return translation
		a = -(a + -t) + t;
	}
	return symop(a, "xyz");
}


createSubJSONFiles(itaFirst, itaForceNew);



/**

function test() {
}

test(subs)

Lots missing, but no first setting at least.
First one missing is #75 (tetragonols) and last is #167 (trigonals, :r option never implemented in Jmol).