From 8938a595cb6a7335ae4d8d25372c1543a1d6f7bb Mon Sep 17 00:00:00 2001
From: Vigilans <vigilans@foxmail.com>
Date: Thu, 11 Apr 2019 17:21:18 +0800
Subject: [PATCH 1/4] Fetch question's `likes` and `dislikes` info

---
 lib/plugins/leetcode.js | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/lib/plugins/leetcode.js b/lib/plugins/leetcode.js
index 2e2ede83..1db2e00b 100644
--- a/lib/plugins/leetcode.js
+++ b/lib/plugins/leetcode.js
@@ -134,6 +134,8 @@ plugin.getProblem = function(problem, cb) {
       '  question(titleSlug: $titleSlug) {',
       '    content',
       '    stats',
+      '    likes',
+      '    dislikes',
       '    codeDefinition',
       '    sampleTestCase',
       '    enableRunCode',
@@ -157,6 +159,8 @@ plugin.getProblem = function(problem, cb) {
 
     problem.totalAC = JSON.parse(q.stats).totalAccepted;
     problem.totalSubmit = JSON.parse(q.stats).totalSubmission;
+    problem.likes = q.likes;
+    problem.dislikes = q.dislikes;
 
     const content = q.translatedContent ? q.translatedContent : q.content;
     // // Replace <sup/> with '^' as the power operator

From 4b4916d078096000d8795fdf5b778ada7c7f7810 Mon Sep 17 00:00:00 2001
From: Vigilans <vigilans@foxmail.com>
Date: Thu, 11 Apr 2019 17:25:23 +0800
Subject: [PATCH 2/4] Add `likes` and `dislikes` to problem desc

---
 lib/commands/show.js | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/lib/commands/show.js b/lib/commands/show.js
index 7c66204a..f3f67ad7 100644
--- a/lib/commands/show.js
+++ b/lib/commands/show.js
@@ -152,14 +152,18 @@ function showProblem(problem, argv) {
   log.printf('* %s', problem.category);
   log.printf('* %s (%s%%)', h.prettyLevel(problem.level), problem.percent.toFixed(2));
 
-  if (filename)
-    log.printf('* Source Code:       %s', chalk.yellow.underline(filename));
+  if (problem.likes)
+    log.printf('* Likes:    %s', problem.likes);
+  if (problem.dislikes)
+    log.printf('* Dislikes: %s', problem.dislikes);
   if (problem.totalAC)
     log.printf('* Total Accepted:    %s', problem.totalAC);
   if (problem.totalSubmit)
     log.printf('* Total Submissions: %s', problem.totalSubmit);
   if (problem.testable && problem.testcase)
     log.printf('* Testcase Example:  %s', chalk.yellow(util.inspect(problem.testcase)));
+  if (filename)
+    log.printf('* Source Code:       %s', chalk.yellow.underline(filename));
 
   log.info();
   log.info(problem.desc);

From 791cdcfa5b188a2e8f3dd5ff24637b31fbdfd9af Mon Sep 17 00:00:00 2001
From: Vigilans <vigilans@foxmail.com>
Date: Thu, 11 Apr 2019 17:36:01 +0800
Subject: [PATCH 3/4] Do not hit problem cache without full props

---
 lib/plugins/cache.js | 13 ++++++++++---
 1 file changed, 10 insertions(+), 3 deletions(-)

diff --git a/lib/plugins/cache.js b/lib/plugins/cache.js
index 90abed93..3c2194e7 100644
--- a/lib/plugins/cache.js
+++ b/lib/plugins/cache.js
@@ -28,13 +28,20 @@ plugin.getProblem = function(problem, cb) {
   const k = h.KEYS.problem(problem);
   const _problem = cache.get(k);
   if (_problem) {
-    // Only hit description with html tags (<pre> always exists for presenting testcase)
-    if (_problem.desc.includes("<pre>")) {
+    // do not hit problem without html tags in desc (<pre> always exists for presenting testcase)
+    if (!_problem.desc.includes("<pre>")) {
+      log.debug('cache discarded for being no longer valid: ' + k + '.json');
+    }
+    // do not hit problem without likes & dislikes (logic will be improved in new lib)
+    else if (!['likes', 'dislikes'].every(p => p in _problem)) {
+      log.debug('cache discarded for being too old: ' + k + '.json');
+    }
+    // cache hit
+    else {
       log.debug('cache hit: ' + k + '.json');
       _.extendOwn(problem, _problem);
       return cb(null, problem);
     }
-    log.debug('cache discarded for being no longer valid: ' + k + '.json');
   }
 
   plugin.next.getProblem(problem, function(e, _problem) {

From afc5cd69dac013c37e0ae4b1051dc5933799cf6a Mon Sep 17 00:00:00 2001
From: Vigilans <vigilans@foxmail.com>
Date: Thu, 11 Apr 2019 18:44:21 +0800
Subject: [PATCH 4/4] Leetcode-cn DOES NOT have `dislike` data

---
 lib/commands/show.js | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/lib/commands/show.js b/lib/commands/show.js
index f3f67ad7..56b9341e 100644
--- a/lib/commands/show.js
+++ b/lib/commands/show.js
@@ -156,6 +156,8 @@ function showProblem(problem, argv) {
     log.printf('* Likes:    %s', problem.likes);
   if (problem.dislikes)
     log.printf('* Dislikes: %s', problem.dislikes);
+  else
+    log.printf('* Dislikes: -');
   if (problem.totalAC)
     log.printf('* Total Accepted:    %s', problem.totalAC);
   if (problem.totalSubmit)