Files
freeCodeCamp/client/commonFramework/code-uri.js
Berkeley Martinez 29f90505b7 More refactoring
2015-11-29 16:27:14 -08:00

119 lines
2.7 KiB
JavaScript

// store code in the URL
window.common = (function(global) {
const {
encodeURIComponent: encode,
decodeURIComponent: decode,
location,
history,
common = { init: [] }
} = global;
const {
replaceScriptTags,
replaceSafeTags,
replaceFormActionAttr,
replaceFccfaaAttr
} = common;
function encodeFcc(val) {
return replaceScriptTags(replaceFormActionAttr(val));
}
function decodeFcc(val) {
return replaceSafeTags(replaceFccfaaAttr(val));
}
var codeUri = {
encode: function(code) {
return encode(code);
},
decode: function(code) {
try {
return decode(code);
} catch (ignore) {
return null;
}
},
isInQuery: function(query) {
var decoded = codeUri.decode(query);
if (!decoded || typeof decoded.split !== 'function') {
return false;
}
return decoded
.split('?')
.splice(1)
.reduce(function(found, param) {
var key = param.split('=')[0];
if (key === 'solution') {
return true;
}
return found;
}, false);
},
isAlive: function() {
return codeUri.enabled &&
codeUri.isInQuery(location.search) ||
codeUri.isInQuery(location.hash);
},
parse: function() {
if (!codeUri.enabled) {
return null;
}
var query;
if (location.search && codeUri.isInQuery(location.search)) {
query = location.search.replace(/^\?/, '');
if (history && typeof history.replaceState === 'function') {
history.replaceState(
history.state,
null,
location.href.split('?')[0]
);
location.hash = '#?' + encodeFcc(query);
}
} else {
query = location.hash.replace(/^\#\?/, '');
}
if (!query) {
return null;
}
return query
.split('&')
.reduce(function(solution, param) {
var key = param.split('=')[0];
var value = param.split('=')[1];
if (key === 'solution') {
return decodeFcc(codeUri.decode(value || ''));
}
return solution;
}, null);
},
querify: function(solution) {
if (!codeUri.enabled) {
return null;
}
if (history && typeof history.replaceState === 'function') {
history.replaceState(
history.state,
null,
'?solution=' + codeUri.encode(encodeFcc(solution))
);
} else {
location.hash = '?solution=' +
codeUri.encode(encodeFcc(solution));
}
return solution;
},
enabled: true
};
common.init.push(function() {
codeUri.parse();
});
common.codeUri = codeUri;
return common;
}(window));