var clutch = require('clutch');
var pg = require('pg')
var builder = require('xmlbuilder')
var connectionString = "pg://user:password@host/database";
function createDateString(date) {
//2006-09-11T16:28:25+01:00 time format
date = Date(date);
return date.getUTCFullYear() + "-" + date.getUTCDate() + "-" + date.getUTCDate() + "T";
}
function createWayBboxQuery(key, value, left, bottom, right, top) {
return "SELECT id,tstamp,version,changeset_id, nodes, user_id, hstore_to_array(tags) as tags FROM ways WHERE (tags @> hstore('" + key + "','" + value + "') AND linestring && st_setsrid(st_makebox2d(st_setsrid(st_makepoint(" +
left + "," + bottom + "),4326), st_setsrid(st_makepoint(" + right + "," + top + "),4326)),4326));";
}
function createNodeBboxQuery(key, value, left, bottom, right, top) {
return "SELECT id, user_id,tstamp,version,changeset_id, hstore_to_array(tags) as tags, X(geom) as lat, Y(geom) as lon FROM nodes WHERE (tags @> hstore('" + key + "','" + value + "') AND geom && st_setsrid(st_makebox2d(st_setsrid(st_makepoint(" +
left + "," + bottom + "),4326), st_setsrid(st_makepoint(" + right + "," + top + "),4326)),4326));";
}
function createNodesForWayQuery(nodes) {
return "SELECT id, tstamp, version, changeset_id, hstore_to_array(tags) as tags, X(geom) as lat, Y(geom) as lon FROM nodes WHERE id = ANY('" + nodes + "');";
}
function nodeWorldHandler(req, res, key, value) {
res.writeHead(200, {'Content-Type': 'text/plain'});
res.end(' key:' +key +' value:'+value+'\n');
}
function nodeBboxHandler(req, res, key, value, left, bottom, right, top) {
pg.connect(connectionString, function(err,client) {
if (err) {
console.log(err);
res.writeHead(404,{});
res.end('\n');
}
else {
//console.log(createNodeBboxQuery(key, value, left, bottom, right, top));
var success = false;
var query = client.query(createNodeBboxQuery(key, value, left, bottom, right, top));
query.on('error', function(err) {
console.log(err);
res.writeHead(404,{});
res.end('\n');
});
query.on('end', function() {
if(success) {
res.write("</xml>");
res.end();
}
else {
//perhaps write 404? is error also raised?
}
});
query.on('row', function(row) {
if(!success) {
success = true;
res.writeHead(200, {'Content-Type': 'text/plain'});
res.write("<xml>");
}
console.log(row);
var node = builder.begin('node')
.att('id', row.id)
.att('timetamp', row.tstamp)
.att('version', row.version)
.att('changeset', row.changeset_id)
.att('lat', row.lat)
.att('lon', row.lon);
var temp = row.tags.replace("{","").replace("}","").split(",");
for(var x=0;x<temp.length;x=x+2)
node.ele('tag')
.att('k',escape(temp[x]))
.att('v',escape(temp[x+1]));
//for(var x=0; x< tags.length;x++)
//console.log(tags[x]);
/*node.ele('tag')
.att('k',tags[x][0])
.att('v',tags[x][1]);
*/
res.write(builder.toString({ pretty: true }));
//res.write(builder.toString());
});
}
});
}
function wayWorldHandler(req, res, key, value) {
res.writeHead(200, {'Content-Type': 'text/plain'});
}
function wayBboxHandler(req, res, key, value, left, bottom, right, top) {
pg.connect(connectionString, function(err,client) {
if(err) {
console.log(err);
res.writeHead(404,{});
res.end();
}
else {
var success = false;
//console.log(createWayBboxQuery(key, value, left, bottom, right, top));
var query = client.query(createWayBboxQuery(key, value, left, bottom, right, top));
query.on('error', function(err) {
console.log(err);
res.writeHead(404,{});
res.end();
});
query.on('end', function() {
if(success) {
res.write("</xml>");
res.end(); //problem!!!
}
else {
res.end();
//perhaps write 404?
}
});
query.on('row', function(row) {
if(!success) {
success = true;
res.writeHead(200, {'Content-Type': 'text/plain'});
res.write("<xml>");
}
//console.log(row);
if(row.nodes != '{}') {
var subquery = client.query(createNodesForWayQuery(row.nodes));
subquery.on('error',function(err) {});
subquery.on('row', function(row) {
console.log(row);
var node = builder.begin('node')
.att('id', row.id)
.att('timetamp', row.tstamp)
.att('version', row.version)
.att('changeset', row.changeset_id)
.att('lat', row.lat)
.att('lon', row.lon);
var temp = row.tags.replace("{","").replace("}","").split(",");
for(var x=0;x<temp.length;x=x+2)
node.ele('tag')
.att('k',escape(temp[x]))
.att('v',escape(temp[x+1]));
res.write(builder.toString({pretty:'true'}));
});
//console.log(createNodesForWayQuery(row.nodes));
}
var way = builder.begin('way')
.att('id', row.id)
.att('timetamp', row.tstamp)
.att('version', row.version)
.att('changeset', row.changeset_id);
var temp = row.tags.replace("{","").replace("}","").split(",");
for(var x=0;x<temp.length;x=x+2)
way.ele('tag')
.att('k',escape(temp[x]))
.att('v',escape(temp[x+1]));
var temp = row.nodes.replace("{","").replace("}","").split(",");
for(var x=0;x<temp.length;x++)
way.ele('nd')
.att('ref',temp[x]);
res.write(builder.toString({pretty:'true'}));
});
}
});
}
function relationWorldHandler(req, res, key, value) {
res.writeHead(200, {'Content-Type': 'text/plain'});
res.end(' key:' +key +' value:'+value+'!\n');
}
function relationBboxHandler(req, res, key, value, left, bottom, right, top) {
}
myRoutes = clutch.route404([
//['GET /api/(\\w+)(\\[bbox=(\\d,\\d,\\d,\\d)\\])*\\[(\\w+)=(\\w+)\\]$', helloSomeone],
['GET /api/node\\[(\\w+)=(\\w+)\\]$',nodeWorldHandler],
//['GET /api/node\\[(\\w+)=(\\w+)\\]\\[bbox=(\\d+(\\.\\d+)?),(\\d+),(\\d+),(\\d+)\\]$',nodeBboxHandler],
['GET /api/node\\[(\\w+)=(\\w+)\\]\\[bbox=(\\d+(?:\\.\\d+)?),(\\d+(?:\\.\\d+)?),(\\d+(?:\\.\\d+)?),(\\d+(?:\\.\\d+)?)\\]$',nodeBboxHandler],
//['GET /api/node\\[(\\w+)=(\\w+)\\]\\[bbox=(\\d+\\.\\d+),(\\d+),(\\d+),(\\d+)\\]$',nodeBboxHandler],
['GET /api/way\\[(\\w+)=(\\w+)\\]$',wayWorldHandler],
['GET /api/way\\[(\\w+)=(\\w+)\\]\\[bbox=(\\d+(?:\\.\\d+)?),(\\d+(?:\\.\\d+)?),(\\d+(?:\\.\\d+)?),(\\d+(?:\\.\\d+)?)\\]$',wayBboxHandler],
['GET /api/relation\\[(\\w+)=(\\w+)\\]$',relationWorldHandler],
//['GET /api/relation\\[(\\w+)=(\\w+)\\](\\[bbox=(\\d),(\\d),(\\d),(\\d)\\])$',relationBboxHandler],
]);
var http = require('http');
http.createServer(myRoutes).listen(8080, 'localhost');
