149 lines
3.6 KiB
JavaScript
149 lines
3.6 KiB
JavaScript
// store code in the URL
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window.common = (function(global) {
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const {
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encodeURIComponent: encode,
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decodeURIComponent: decode,
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location,
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history,
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common = { init: [] }
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} = global;
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const {
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replaceScriptTags,
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replaceSafeTags,
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replaceFormActionAttr,
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replaceFccfaaAttr,
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replaceNoprotect
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} = common;
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const queryRegex = /^(\?|#\?)/;
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function encodeFcc(val) {
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return replaceScriptTags(replaceFormActionAttr(replaceNoprotect(val)));
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}
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function decodeFcc(val) {
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return replaceSafeTags(replaceFccfaaAttr(val));
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}
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var codeUri = {
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encode: function(code) {
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return encode(code);
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},
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decode: function(code) {
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try {
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return decode(code);
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} catch (ignore) {
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return null;
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}
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},
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isInQuery: function(query) {
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var decoded = codeUri.decode(query);
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if (!decoded || typeof decoded.split !== 'function') {
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return false;
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}
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return decoded
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.replace(queryRegex, '')
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.split('&')
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.reduce(function(found, param) {
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var key = param.split('=')[0];
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if (key === 'solution') {
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return true;
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}
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return found;
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}, false);
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},
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isAlive: function() {
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return codeUri.enabled &&
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codeUri.isInQuery(location.search) ||
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codeUri.isInQuery(location.hash);
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},
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getKeyInQuery(query, keyToFind = '') {
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return query
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.split('&')
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.reduce(function(oldValue, param) {
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var key = param.split('=')[0];
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var value = param
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.split('=')
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.slice(1)
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.join('=');
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if (key === keyToFind) {
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return value;
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}
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return oldValue;
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}, null);
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},
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getSolutionFromQuery(query = '') {
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return decodeFcc(
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codeUri.decode(codeUri.getKeyInQuery(query, 'solution'))
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);
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},
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parse: function() {
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if (!codeUri.enabled) {
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return null;
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}
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var query;
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if (location.search && codeUri.isInQuery(location.search)) {
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query = location.search.replace(/^\?/, '');
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if (history && typeof history.replaceState === 'function') {
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history.replaceState(
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history.state,
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null,
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location.href.split('?')[0]
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);
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location.hash = '#?' + encodeFcc(query);
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}
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} else {
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query = location.hash.replace(/^\#\?/, '');
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}
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if (!query) {
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return null;
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}
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return this.getSolutionFromQuery(query);
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},
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querify: function(solution) {
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if (!codeUri.enabled) {
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return null;
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}
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if (history && typeof history.replaceState === 'function') {
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// grab the url up to the query
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// destroy any hash symbols still clinging to life
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const url = (location.href.split('?')[0]).replace(/(#*)$/, '');
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history.replaceState(
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history.state,
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null,
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url +
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'#?' +
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(codeUri.shouldRun() ? '' : 'run=disabled&') +
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'solution=' +
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codeUri.encode(encodeFcc(solution))
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);
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} else {
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location.hash = '?solution=' +
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codeUri.encode(encodeFcc(solution));
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}
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return solution;
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},
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enabled: true,
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shouldRun() {
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return !this.getKeyInQuery(
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(location.search || location.hash).replace(queryRegex, ''),
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'run'
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);
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}
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};
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common.init.push(function() {
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codeUri.parse();
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});
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common.codeUri = codeUri;
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common.shouldRun = () => codeUri.shouldRun();
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return common;
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}(window));
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