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transform.ts
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transform.ts
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import fs = require('fs');
import { baseName, pathSep, delete_file, write_file } from "./helpers";
import * as cons from "./constants";
var _ = require('lodash');
var geojson = require('geojson');
export class TransformJob {
constructor() {
}
transform_overpass_to_clean() {
function start() {
console.log("start");
// your code here
if (countFilesWithEnding(cons.ENDING_OP) == 4) {
console.log(cons.ENDING_OP + " :) ");
transform_to_clean(cons.BASE_DIR + pathSep() + cons.RESOURCES);
//setTimeout(start, 3000);
}
else {
console.log(cons.ENDING_OP + " :( -> warte 5 Sekunden ");
setTimeout(start, 5000);
}
}
start();
}
merge_overpass_with_kidsle_kb() {
function start2() {
console.log("start");
// your code here
if (countFilesWithEnding(cons.ENDING_OP_CLEAN) == 4) {
console.log(cons.ENDING_OP_CLEAN + " :) ");
merge_overpass_with_kidsle_kb(cons.BASE_DIR + pathSep() + cons.RESOURCES);
//setTimeout(start, 3000);
}
else {
console.log(cons.ENDING_OP_CLEAN + " :( -> warte 5 Sekunden ");
setTimeout(start2, 5000);
}
}
start2();
}
}
function transform_to_clean(complete_transform_dir: string) {
fs.readdir(complete_transform_dir, function (err, query_files) {
if (err) throw err;
for (var i in query_files) {
/* do not retransform transformed files */
if (_.endsWith(query_files[i], '_OP.geojson')) {
let file_to_transform: string = complete_transform_dir + pathSep() + query_files[i];
let retArr: any[] = [];
fs.readFile(file_to_transform, 'utf8', function (err, file_content) {
if (err) throw err;
if (file_content == ("" || "undefined")) {
console.log("file " + query_files[i] + " is empty!");
}
else {
var geojson_Obj = _(JSON.parse(file_content)['features']);
geojson_Obj.forEach(function (element) {
// Description: if element = 'node' || (center && (relation || way))
if (element["type"] == "Feature" &&
(element["properties"]["type"] == 'node') ||
(element["properties"]["geometry"] == 'center' &&
(element["properties"]["type"] == 'relation' ||
element["properties"]["type"] == 'way'))) {
retArr.push({
id: element['id'],
longitude: element['geometry']['coordinates'][0],
latitude: element['geometry']['coordinates'][1],
tags: element['properties']['tags']
});
}
});
let target_fileName: string = file_to_transform.replace('.geojson', '_clean.geojson');
delete_file(target_fileName);
// convert datastructure to valid geojson
let retArr_geoJson: any = geojson.parse(retArr, { Point: ['latitude', 'longitude'] });
// write file with indention
write_file(target_fileName, retArr_geoJson);
}
});
}
}
});
}
function merge_overpass_with_kidsle_kb(complete_transform_dir: string) {
fs.readdir(complete_transform_dir, function (err, query_files) {
if (err) throw err;
for (var i in query_files) {
if (_.endsWith(query_files[i], cons.ENDING_KIDSLE_KB)) {
/* product means information-type like playgrounds, schools, doctors or daycare */
var product: string = _.replace(query_files[i], cons.ENDING_KIDSLE_KB, '');
var full_path_kidsle_kb_file: string = complete_transform_dir + pathSep() + query_files[i];
var full_path_overpass_file: string = complete_transform_dir + pathSep() + _.replace(query_files[i], cons.ENDING_KIDSLE_KB, cons.ENDING_OP_CLEAN);
var content_kidsle_kb_file: string = fs.readFileSync(full_path_kidsle_kb_file).toString();
var content_overpass_file: string = fs.readFileSync(full_path_overpass_file).toString();
var json_content_kidsle_kb_file: string = JSON.parse(content_kidsle_kb_file)['features'];
var json_content_overpass_file: string = JSON.parse(content_overpass_file)['features'];
let return_Array: any[] = [];
_(json_content_overpass_file).forEach(function (value_overpass) {
var op_lon: string = value_overpass['geometry']['coordinates'][0];
var op_lat: string = value_overpass['geometry']['coordinates'][1];
var kidsle_properties = new Array();
_(json_content_kidsle_kb_file).forEach(function (value_kidsle) {
var kidsle_lon: string = value_kidsle['geometry']['coordinates'][0];
var kidsle_lat: string = value_kidsle['geometry']['coordinates'][1];
// if op-latlon == kidsle-latnon
if (op_lat == kidsle_lat && op_lon == kidsle_lon) {
kidsle_properties = value_kidsle['properties'];
}
});
/* assign overpass-tags with kidsle-tags */
return_Array.push({
id: value_overpass['id'],
longitude: value_overpass['geometry']['coordinates'][0],
latitude: value_overpass['geometry']['coordinates'][1],
tags: _.assign(value_overpass['properties']['tags'], kidsle_properties)
});
});
let return_array_geojson: any = geojson.parse(return_Array, { Point: ['latitude', 'longitude'] });
let target_fileName: string = complete_transform_dir + pathSep() + product + cons.ENDING_OP_CLEAN_MERGE_KIDSLE;
delete_file(target_fileName);
write_file(target_fileName, return_array_geojson);
}
}
});
}
function countFilesWithEnding(ending: string) {
var files = fs.readdirSync(cons.BASE_DIR + pathSep() + cons.RESOURCES);
var count: number = 0;
files.forEach(function (row, index) {
if (row.indexOf(ending) > -1) {
count += 1;
}
});
return count;
}