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

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47 changes: 47 additions & 0 deletionslib/config.js
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Original file line numberDiff line numberDiff 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 deletionslib/plugins/company.js
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Original file line numberDiff line numberDiff 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 deletionslib/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 DownExpand 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 togetProblems: ' + e.msg);
log.debug(category + ': failed togetCategory: ' + 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 DownExpand 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 deletionspackage-lock.json
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1 change: 1 addition & 0 deletionspackage.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",
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1 change: 1 addition & 0 deletionstest/mock/tags.json.20200911
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@@ -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 deletionstest/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
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