From cf7d706e5aec9ef4d52c768c2d14e3a9f4f59d2b Mon Sep 17 00:00:00 2001
From: Gleb Bahmutov <gleb.bahmutov@gmail.com>
Date: Wed, 9 Dec 2015 11:17:58 -0500
Subject: [PATCH] feat(output): prints nice table with relative age for each
 release, closes #11

---
 .gitignore       |  1 +
 README.md        | 17 +++++++++++++++++
 bin/available.js | 22 +++++++++++++++++-----
 package.json     |  1 +
 src/available.js | 27 ++++++++++++++++++++-------
 5 files changed, 56 insertions(+), 12 deletions(-)

diff --git a/.gitignore b/.gitignore
index d135d46..b5a6826 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,2 +1,3 @@
 node_modules/
 cover/
+.DS_Store
diff --git a/README.md b/README.md
index d1594d5..50a2842 100644
--- a/README.md
+++ b/README.md
@@ -26,6 +26,23 @@ What are new releases after `1.0.0`?
     releases lazy-ass@1.0.0
     releases lazy-ass 1.0.0
 
+## Output
+
+A table with versios, timestamps and relative age
+
+```
+$ vers babel@6.1.15
+babel since 6.1.15
+---------------------------------------------------
+version  timestamp                          age
+-------  ---------------------------------  -------
+6.1.16   Thu Nov 12 2015 16:34:40 GMT-0500  a month
+6.1.17   Thu Nov 12 2015 16:40:45 GMT-0500  a month
+6.1.18   Thu Nov 12 2015 16:46:50 GMT-0500  a month
+6.2.4    Tue Nov 24 2015 22:12:59 GMT-0500  15 days
+6.3.13   Fri Dec 04 2015 06:57:56 GMT-0500  5 days
+```
+
 ## API
 
 You can use this module from other modules
diff --git a/bin/available.js b/bin/available.js
index f844e65..8549bfe 100755
--- a/bin/available.js
+++ b/bin/available.js
@@ -5,6 +5,7 @@
 const la = require('lazy-ass');
 const check = require('check-more-types');
 require('console.table');
+const moment = require('moment');
 
 var help = [
   'USE: jso <property name prefix>',
@@ -37,10 +38,20 @@ const options = {
   version: version
 };
 
-function versionToInfo(v) {
-  return {
-    version: v
-  };
+function toHumanFormat(versions, timestamps) {
+  la(check.array(versions), 'invalid versions', versions);
+  la(check.array(timestamps), 'invalid timestamps', timestamps);
+  la(versions.length === timestamps.length,
+    'mismatch in numbers', versions, timestamps);
+  const now = moment();
+  return versions.map(function (version, k) {
+    const t = moment(timestamps[k]);
+    return {
+      version: version,
+      timestamp: t,
+      age: moment.duration(now.diff(t)).humanize()
+    };
+  });
 }
 
 function printReleases(query, releases) {
@@ -49,7 +60,8 @@ function printReleases(query, releases) {
   la(check.unemptyString(releases.name), 'missing name in', releases);
 
   la(check.array(releases.versions), 'no versions in', releases);
-  const humanInfo = releases.versions.map(versionToInfo);
+  const humanInfo = toHumanFormat(releases.versions, releases.timestamps);
+  la(check.array(humanInfo), 'could not construct human output from', releases);
 
   const title = options.version ?
     releases.name + ' since ' + options.version :
diff --git a/package.json b/package.json
index bdb9a1e..c0fc9fe 100644
--- a/package.json
+++ b/package.json
@@ -36,6 +36,7 @@
     "console.table": "0.4.0",
     "lazy-ass": "1.3.0",
     "lodash": "3.10.1",
+    "moment": "2.10.6",
     "npm-utils": "1.0.0",
     "q": "1.4.1",
     "request": "2.67.0",
diff --git a/src/available.js b/src/available.js
index 1211ca5..14793e7 100644
--- a/src/available.js
+++ b/src/available.js
@@ -23,6 +23,16 @@ function queryRegistry(query, silent, npmUrl) {
 
   request.get(url, onNPMversions);
 
+  function getTimestamps(info, versions) {
+    if (!check.object(info.time)) {
+      return;
+    }
+    la(check.array(versions), 'expected list of versions', versions);
+    return versions.map(function (v) {
+      return info.time[v];
+    });
+  }
+
   function onNPMversions(err, response, body) {
     if (err) {
       console.error('ERROR when fetching info for package', name);
@@ -38,12 +48,10 @@ function queryRegistry(query, silent, npmUrl) {
         deferred.reject(str);
         return;
       }
-      var versions;
-      if (info.time) {
-        versions = Object.keys(info.time);
-      } else if (info.versions) {
-        versions = Object.keys(info.versions);
-      }
+      var versionObject = info.versions || info.time;
+      la(check.object(versionObject), 'could not find versions in', info);
+
+      var versions = Object.keys(versionObject);
       if (!Array.isArray(versions)) {
         throw new Error('Could not get versions for ' + name + ' from ' + info);
       }
@@ -51,6 +59,7 @@ function queryRegistry(query, silent, npmUrl) {
       var validVersions = versions.filter(function (ver) {
         return cleanVersion(ver, name, silent);
       });
+
       if (query.version) {
         la(check.string(query.version), 'missing version string, have', query.version);
         validVersions = validVersions.filter(function (ver) {
@@ -59,10 +68,14 @@ function queryRegistry(query, silent, npmUrl) {
         });
       }
 
+      var timestamps = getTimestamps(info, validVersions);
+
       deferred.resolve({
         name: name,
-        versions: validVersions
+        versions: validVersions,
+        timestamps: timestamps
       });
+
       return;
     } catch (err) {
       console.error(err);