/****************************************************************************
 * Copyright 2017 EPAM Systems
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 ***************************************************************************/
var safda = 0;
import 'babel-polyfill';
import 'whatwg-fetch';
import queryString from 'query-string';

import api from './api.js';
import * as molfile from './chem/molfile';
import * as smiles from './chem/smiles';
import * as structformat from './ui/structformat';

import ui from './ui';
import Render from './render';

function getSmiles() {
	return smiles.stringify(ketcher.editor.struct(),
		{ ignoreErrors: true });
}

function saveSmiles() {
	const struct = ketcher.editor.struct();
	return structformat.toString(struct, 'smiles', ketcher.server);
}

function getMolfile() {
	return molfile.stringify(ketcher.editor.struct(),
		{ ignoreErrors: true });
}

function setMolecule(molString) {
	if (!(typeof molString === "string"))
		return;
	ketcher.ui.load(molString, {
		rescale: true
	});
}

function addFragment(molString) {
	if (!(typeof molString === "string"))
		return;
	ketcher.ui.load(molString, {
		rescale: true,
		fragment: true
	});
}

function showMolfile(clientArea, molString, options) {
	const render = new Render(clientArea, Object.assign({
		scale: options.bondLength || 75
	}, options));
	if (molString) {
		const mol = molfile.parse(molString);
		render.setMolecule(mol);
	}
	render.update();
	// not sure we need to expose guts
	return render;
}

// TODO: replace window.onload with something like <https://github.com/ded/domready>
// to start early
window.onload = function () {
	var params = queryString.parse(document.location.search);
	if (params.api_path)
		ketcher.apiPath = params.api_path;
  // Url is something similar http://localhost:8080/js/ketcher2/...
  // To access server split on "/js/"
  var requestUrl = document.location.href.split("/static")[0]
  fetch(requestUrl,{
        method: "GET",
        //async: false,
        body: {
            getMLServerPath: true
        }
    }).then(function (response) {
        ketcher.api = response.mlServerPath;

    }).catch(function (err) {
      throw 'Cannot parse result\n' + err;
    });
	
  ketcher.server = api(ketcher.apiPath, {
		'smart-layout': true,
		'ignore-stereochemistry-errors': true,
		'mass-skip-error-on-pseudoatoms': false,
		'gross-formula-add-rsites': true
	});
	ketcher.ui = ui(Object.assign({}, params, buildInfo), ketcher.server);
	ketcher.editor = global._ui_editor;
	ketcher.server.then(function () {
		if (params.mol)
			ketcher.ui.load(params.mol);
	}, function () {
		document.title += ' (standalone)';
	});
};

const buildInfo = {
	version: '__VERSION__',
	apiPath: '__API_PATH__',
	buildDate: '__BUILD_DATE__',
	buildNumber: '__BUILD_NUMBER__' || null,
	buildOptions: '__BUILD_OPTIONS__',
	miewPath: '__MIEW_PATH__' || null
};

const ketcher = module.exports = Object.assign({
	getSmiles,
	saveSmiles,
	getMolfile,
	setMolecule,
	addFragment,
	showMolfile
}, buildInfo);