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WIP: fetch problem tags from GraphQL & sort problems by natural order #51

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3bb448f
get tags from GraphQL API
AerysNan Sep 10, 2020
74d6fe6
make the problem list natural ordered
AerysNan Sep 11, 2020
fee7eed
fix eslint
AerysNan Sep 11, 2020
d0bdeda
update test
AerysNan Sep 11, 2020
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47 changes: 47 additions & 0 deletions lib/config.js
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Original file line number Diff line number Diff line change
Expand Up @@ -32,6 +32,52 @@ const DEFAULT_CONFIG = {
'swift',
'typescript'
],
tags: [
'array',
'backtracking',
'binary-indexed-tree',
'binary-search',
'binary-search-tree',
'bit-manipulation',
'brainteaser',
'breadth-first-search',
'depth-first-search',
'design',
'divide-and-conquer',
'dynamic-programming',
'geometry',
'graph',
'greedy',
'hash-table',
'heap',
'line-sweep',
'linked-list',
'math',
'memoization',
'minimax',
'ordered-map',
'queue',
'random',
'recursion',
'rejection-sampling',
'reservoir-sampling',
'segment-tree',
'sliding-window',
'sort',
'stack',
'string',
'topological-sort',
'tree',
'trie',
'two-pointers',
'union-find',

// TODO: these two tags below are included on leetcode.com but not on leetcode-cn.com
// Currently comment out for simplicity

// 'rolling-hash',
// 'suffix-array',
],
urls: {
// base urls
base: 'https://leetcode.com',
Expand All @@ -51,6 +97,7 @@ const DEFAULT_CONFIG = {
linkedin_login_request: 'https://www.linkedin.com/login',
linkedin_session_request: 'https://www.linkedin.com/checkpoint/lg/login-submit',
// questions urls
tag: 'https://leetcode.com/tag/$tag/',
problems: 'https://leetcode.com/api/problems/$category/',
problem: 'https://leetcode.com/problems/$slug/description/',
test: 'https://leetcode.com/problems/$slug/interpret_solution/',
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3 changes: 0 additions & 3 deletions lib/plugins/company.js
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Original file line number Diff line number Diff line change
Expand Up @@ -1520,9 +1520,6 @@ plugin.getProblems = function(cb) {
if (id in COMPONIES) {
problem.companies = (problem.companies || []).concat(COMPONIES[id]);
}
if (id in TAGS) {
problem.tags = (problem.tags || []).concat(TAGS[id]);
}
});
return cb(null, problems);
});
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73 changes: 68 additions & 5 deletions lib/plugins/leetcode.js
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Expand Up @@ -3,6 +3,7 @@ var util = require('util');

var _ = require('underscore');
var request = require('request');
var { orderBy } = require('natural-orderby');
var prompt = require('prompt');

var config = require('../config');
Expand Down Expand Up @@ -54,15 +55,14 @@ plugin.init = function() {
config.app = 'leetcode';
};

plugin.getProblems = function(cb) {
log.debug('running leetcode.getProblems');
plugin.getProblemsWithoutTags = function(cb) {
let problems = [];
const getCategory = function(category, queue, cb) {
plugin.getCategoryProblems(category, function(e, _problems) {
if (e) {
log.debug(category + ': failed to getProblems: ' + e.msg);
log.debug(category + ': failed to getCategory: ' + e.msg);
} else {
log.debug(category + ': getProblems got ' + _problems.length + ' problems');
log.debug(category + ': getCategory got ' + _problems.length + ' problems');
problems = problems.concat(_problems);
}
return cb(e);
Expand All @@ -77,6 +77,68 @@ plugin.getProblems = function(cb) {
});
};

plugin.getProblems = function(cb) {
log.debug('running leetcode.getProblems');
plugin.getProblemsWithoutTags(function(e, problems) {
if (e) return cb(e);
problems = new Map(problems.map(p => [p.id, p]));
const getTag = function (tag, queue, cb) {
plugin.getTagProblems(tag, function(e, _problems) {
if (e) {
log.debug(tag + ': failed to getTag: ' + JSON.stringify(e));
} else if (!_problems) {
log.debug(tag + ': retrieve empty tag');
} else {
log.debug(tag + ': getTag got ' + _problems.length + ' problems');
_problems.forEach(function (p) {
let id = parseInt(p.questionId);
if (problems.has(id)) {
problems.get(id).tags.push(tag);
}
})
}
return cb(e);
});
};
spin = h.spin('Downloading tags');
const q = new Queue(config.sys.tags, {}, getTag);
q.run(null, function (e) {
spin.stop();
problems = orderBy(Array.from(problems.values()), [p => p.fid], ['asc']);
return cb(e, problems);
});
});
}

plugin.getTagProblems = function(tag, cb) {
log.debug('running leetcode.getTagProblems: ' + tag);
const opts = plugin.makeOpts(config.sys.urls.graphql);
opts.headers.Origin = config.sys.urls.base;
opts.headers.Referer = config.sys.urls.tag.replace('$tag', tag);
opts.json = true;
opts.body = {
query: [
'query getTopicTag($slug: String!) {',
' topicTag(slug: $slug) {',
' slug',
' questions {',
' questionId',
' }',
' }',
'}'
].join('\n'),
variables: {slug: tag},
operationName: 'getTopicTag'
};
spin.text = 'Downloading tag ' + tag;
request.post(opts, function(e, resp, body) {
e = plugin.checkError(e, resp, 200);
if (e) return cb(e);
if(!body || !body.data || !body.data.topicTag) return cb('receive invalid response body');
return cb(null, body.data.topicTag.questions);
});
}

plugin.getCategoryProblems = function(category, cb) {
log.debug('running leetcode.getCategoryProblems: ' + category);
const opts = plugin.makeOpts(config.sys.urls.problems.replace('$category', category));
Expand Down Expand Up @@ -109,7 +171,8 @@ plugin.getCategoryProblems = function(category, cb) {
percent: p.stat.total_acs * 100 / p.stat.total_submitted,
level: h.levelToName(p.difficulty.level),
starred: p.is_favor,
category: json.category_slug
category: json.category_slug,
tags: []
};
});

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5 changes: 5 additions & 0 deletions package-lock.json
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1 change: 1 addition & 0 deletions package.json
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Expand Up @@ -54,6 +54,7 @@
"he": "1.2.0",
"mkdirp": "^1.0.4",
"moment": "^2.20.1",
"natural-orderby": "^2.0.3",
"nconf": "0.10.0",
"ora": "3.0.0",
"prompt": "1.0.0",
Expand Down
1 change: 1 addition & 0 deletions test/mock/tags.json.20200911
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Original file line number Diff line number Diff line change
@@ -0,0 +1 @@
{"data":{"topicTag":{"slug":"array","questions":[{"questionId":"1"},{"questionId":"4"},{"questionId":"11"},{"questionId":"15"},{"questionId":"16"},{"questionId":"18"},{"questionId":"26"},{"questionId":"27"},{"questionId":"31"},{"questionId":"33"},{"questionId":"34"},{"questionId":"35"},{"questionId":"39"},{"questionId":"40"},{"questionId":"41"},{"questionId":"42"},{"questionId":"45"},{"questionId":"48"},{"questionId":"53"},{"questionId":"54"},{"questionId":"55"},{"questionId":"56"},{"questionId":"57"},{"questionId":"59"},{"questionId":"62"},{"questionId":"63"},{"questionId":"64"},{"questionId":"66"},{"questionId":"73"},{"questionId":"74"},{"questionId":"75"},{"questionId":"78"},{"questionId":"79"},{"questionId":"80"},{"questionId":"81"},{"questionId":"84"},{"questionId":"85"},{"questionId":"88"},{"questionId":"90"},{"questionId":"105"},{"questionId":"106"},{"questionId":"118"},{"questionId":"119"},{"questionId":"120"},{"questionId":"121"},{"questionId":"122"},{"questionId":"123"},{"questionId":"126"},{"questionId":"128"},{"questionId":"152"},{"questionId":"153"},{"questionId":"154"},{"questionId":"162"},{"questionId":"163"},{"questionId":"167"},{"questionId":"169"},{"questionId":"189"},{"questionId":"209"},{"questionId":"216"},{"questionId":"217"},{"questionId":"219"},{"questionId":"228"},{"questionId":"229"},{"questionId":"238"},{"questionId":"243"},{"questionId":"245"},{"questionId":"259"},{"questionId":"268"},{"questionId":"277"},{"questionId":"280"},{"questionId":"283"},{"questionId":"287"},{"questionId":"289"},{"questionId":"370"},{"questionId":"380"},{"questionId":"381"},{"questionId":"414"},{"questionId":"442"},{"questionId":"448"},{"questionId":"457"},{"questionId":"485"},{"questionId":"495"},{"questionId":"531"},{"questionId":"532"},{"questionId":"533"},{"questionId":"548"},{"questionId":"560"},{"questionId":"561"},{"questionId":"562"},{"questionId":"565"},{"questionId":"566"},{"questionId":"581"},{"questionId":"605"},{"questionId":"611"},{"questionId":"621"},{"questionId":"624"},{"questionId":"628"},{"questionId":"643"},{"questionId":"644"},{"questionId":"661"},{"questionId":"665"},{"questionId":"667"},{"questionId":"670"},{"questionId":"674"},{"questionId":"689"},{"questionId":"695"},{"questionId":"697"},{"questionId":"713"},{"questionId":"714"},{"questionId":"717"},{"questionId":"718"},{"questionId":"719"},{"questionId":"723"},{"questionId":"724"},{"questionId":"729"},{"questionId":"747"},{"questionId":"748"},{"questionId":"756"},{"questionId":"777"},{"questionId":"779"},{"questionId":"780"},{"questionId":"790"},{"questionId":"798"},{"questionId":"808"},{"questionId":"811"},{"questionId":"852"},{"questionId":"857"},{"questionId":"861"},{"questionId":"864"},{"questionId":"870"},{"questionId":"879"},{"questionId":"898"},{"questionId":"901"},{"questionId":"905"},{"questionId":"924"},{"questionId":"927"},{"questionId":"932"},{"questionId":"936"},{"questionId":"941"},{"questionId":"943"},{"questionId":"950"},{"questionId":"951"},{"questionId":"954"},{"questionId":"958"},{"questionId":"962"},{"questionId":"978"},{"questionId":"982"},{"questionId":"987"},{"questionId":"991"},{"questionId":"1002"},{"questionId":"1009"},{"questionId":"1013"},{"questionId":"1016"},{"questionId":"1019"},{"questionId":"1020"},{"questionId":"1027"},{"questionId":"1031"},{"questionId":"1041"},{"questionId":"1044"},{"questionId":"1049"},{"questionId":"1055"},{"questionId":"1056"},{"questionId":"1062"},{"questionId":"1063"},{"questionId":"1066"},{"questionId":"1071"},{"questionId":"1074"},{"questionId":"1082"},{"questionId":"1083"},{"questionId":"1096"},{"questionId":"1098"},{"questionId":"1102"},{"questionId":"1105"},{"questionId":"1107"},{"questionId":"1108"},{"questionId":"1112"},{"questionId":"1113"},{"questionId":"1137"},{"questionId":"1138"},{"questionId":"1139"},{"questionId":"1145"},{"questionId":"1168"},{"questionId":"1175"},{"questionId":"1206"},{"questionId":"1217"},{"questionId":"1221"},{"questionId":"1227"},{"questionId":"1231"},{"questionId":"1232"},{"questionId":"1241"},{"questionId":"1247"},{"questionId":"1249"},{"questionId":"1253"},{"questionId":"1255"},{"questionId":"1256"},{"questionId":"1262"},{"questionId":"1272"},{"questionId":"1273"},{"questionId":"1280"},{"questionId":"1281"},{"questionId":"1287"},{"questionId":"1289"},{"questionId":"1293"},{"questionId":"1306"},{"questionId":"1308"},{"questionId":"1321"},{"questionId":"1329"},{"questionId":"1342"},{"questionId":"1345"},{"questionId":"1349"},{"questionId":"1350"},{"questionId":"1374"},{"questionId":"1378"},{"questionId":"1386"},{"questionId":"1391"},{"questionId":"1395"},{"questionId":"1396"},{"questionId":"1400"},{"questionId":"1402"},{"questionId":"1413"},{"questionId":"1421"},{"questionId":"1422"},{"questionId":"1426"},{"questionId":"1445"},{"questionId":"1455"},{"questionId":"1463"},{"questionId":"1464"},{"questionId":"1468"},{"questionId":"1476"},{"questionId":"1477"},{"questionId":"1482"},{"questionId":"1483"},{"questionId":"1486"},{"questionId":"1487"},{"questionId":"1491"},{"questionId":"1496"},{"questionId":"1500"},{"questionId":"1505"},{"questionId":"1510"},{"questionId":"1511"},{"questionId":"1514"},{"questionId":"1515"},{"questionId":"1525"},{"questionId":"1528"},{"questionId":"1538"},{"questionId":"1539"},{"questionId":"1548"},{"questionId":"1549"},{"questionId":"1553"},{"questionId":"1556"},{"questionId":"1560"},{"questionId":"1570"},{"questionId":"1572"},{"questionId":"1574"},{"questionId":"1575"},{"questionId":"1580"},{"questionId":"1581"},{"questionId":"1584"},{"questionId":"1586"},{"questionId":"1603"},{"questionId":"1604"},{"questionId":"1605"},{"questionId":"1610"},{"questionId":"1612"},{"questionId":"1615"},{"questionId":"1616"},{"questionId":"1620"},{"questionId":"1622"},{"questionId":"1626"},{"questionId":"1627"},{"questionId":"1631"},{"questionId":"1635"},{"questionId":"1640"},{"questionId":"1646"},{"questionId":"1656"},{"questionId":"1657"},{"questionId":"1675"},{"questionId":"1677"},{"questionId":"1679"},{"questionId":"1682"},{"questionId":"1689"},{"questionId":"1713"}]}}}
9 changes: 7 additions & 2 deletions test/plugins/test_leetcode.js
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Expand Up @@ -124,10 +124,15 @@ describe('plugin:leetcode', function() {
nock('https://leetcode.com')
.get('/api/problems/concurrency/')
.replyWithFile(200, './test/mock/problems.json.20160911');


nock('https://leetcode.com')
.post('/graphql')
.times(config.sys.tags.length)
.replyWithFile(200, './test/mock/tags.json.20200911');

plugin.getProblems(function(e, problems) {
assert.equal(e, null);
assert.equal(problems.length, 377 * 4);
assert.equal(problems.length, 377);
done();
});
});
Expand Down