generate a range of days between two dates

README.md

@@ -5,7 +5,7 @@
 
 ##Next
 
-Create a range of days between two dates.
+Map closed tasks to a range of dates while maintaining the points remaining stats.
 
 ##Project Charter
 

package.json

@@ -12,7 +12,8 @@
         "lodash": "~1.3.1"
     },
     "devDependencies": {
-        "mocha": "~1.12.0"
+        "mocha": "~1.12.0",
+        "moment": "~2.1.0"
     },
     "scripts": {
         "test": "make test"
@@ -33,4 +34,4 @@
     "bugs": {
         "url": "https://github.com/radekstepan/github-burndown-chart/issues"
     }
-}
+}

src/dates.coffee

@@ -0,0 +1,20 @@
+#!/usr/bin/env coffee
+{ _ } = require 'lodash'
+reg   = require './regex'
+
+module.exports =
+    # Create a range of days between two dates.
+    'range': ({ a, b }, cb) ->
+        # Swap?
+        [ b, a ] = [ a, b ] if b < a
+
+        # When do we start & end?
+        [ year, month, day ] = _.map(a.match(reg.datetime)[1].split('-'), (d) -> parseInt(d) )
+        b = b.match(reg.datetime)[1]
+
+        days = []
+        do add = (i = 0) ->
+            days.push c = new Date(year, month - 1, day + i).toJSON().match(reg.datetime)[1]
+            add(i + 1) unless c is b
+        
+        cb null, days

src/days.coffee

@@ -1,5 +0,0 @@
-#!/usr/bin/env coffee
-module.exports =
-    # Create a range of days between two dates.
-    'range': ({ a, b }, cb) ->
-        cb 'Not implemented yet'

src/issues.coffee

@@ -1,7 +1,9 @@
 #!/usr/bin/env coffee
 { _ } = require 'lodash'
 async = require 'async'
+
 req   = require './request'
+reg   = require './regex'
 
 module.exports =
     # Used on an initial fetch of issues for a repo.
@@ -66,7 +68,7 @@ module.exports =
             { state, number, closed_at } = issue
             number ?= '?'
             return "Issue ##{number} does not have a `closed_at` parameter" unless closed_at
-            unless matches = closed_at.match /^(\d{4}-\d{2}-\d{2})T(.*)/
+            unless matches = closed_at.match reg.datetime
                 return "Issue ##{number} does not match the `closed_at` pattern"
             
             # Explode the matches.

src/regex.coffee

@@ -0,0 +1,4 @@
+#!/usr/bin/env coffee
+module.exports =
+    'datetime': /^(\d{4}-\d{2}-\d{2})T(.*)/
+    'size_label': /size (\d+)$/

test/dates.coffee

@@ -0,0 +1,26 @@
+#!/usr/bin/env coffee
+assert = require 'assert'
+path   = require 'path'
+{ _ }  = require 'lodash'
+moment = require 'moment'
+
+dates = require path.resolve __dirname, '../src/dates.coffee'
+
+tests =
+    'range between two dates':
+        [ '2013-01-01T00:00:00Z', '2013-01-02T00:00:00Z' ]
+    'range regardless of the order':
+        [ '2013-01-02T00:00:00Z', '2013-01-01T00:00:00Z' ]
+    'range across a year':
+        [ '2012-12-12T00:00:00Z', '2013-01-05T00:00:00Z' ]
+    'range on the same day':
+        [ '2012-12-12T00:00:00Z', '2013-12-12T00:00:00Z' ]
+
+for key, value of tests then do (key, value) ->
+    exports[key] = (done) ->
+        [ a, b ] = value
+        dates.range { a, b }, (err, data) ->
+            assert.ifError err
+            assert.equal data.length, Math.abs(moment(a).diff(moment(b), 'days')) + 1
+            _.each data, (date) -> assert moment(date).isValid()
+            done.call null

test/days.coffee

@@ -1,11 +0,0 @@
-#!/usr/bin/env coffee
-assert = require 'assert'
-path   = require 'path'
-
-days = require path.resolve __dirname, '../src/days.coffee'
-
-module.exports =  
-    'days array between two endpoints': (done) ->
-        days.range { a: '2013-01-05', a: '2012-11-01' }, (err, data) ->
-            assert.ifError err
-            done.call null