burnchart/app.coffee

232 lines
9.0 KiB
CoffeeScript

flatiron = require 'flatiron'
connect = require 'connect'
https = require 'https'
fs = require "fs"
yaml = require "js-yaml"
eco = require 'eco'
# Helper object for GitHub Issues.
Issues =
# Make HTTPS GET to GitHub API v3.
get: (path, type, callback) ->
options =
host: "api.github.com"
method: "GET"
path: path
headers:
'User-Agent': 'Scrum Burndown (1)'
if Issues.config.api_token
options.headers.Authorization = 'token '+Issues.config.api_token
https.request(options, (response) ->
if response.statusCode is 200
json = ""
response.on "data", (chunk) -> json += chunk
response.on "end", -> callback JSON.parse(json), type
else
throw response.statusCode
).end()
# URLs to API.
getOpenIssues: (callback) -> Issues.get "/repos/#{Issues.config.github_user}/#{Issues.config.github_project}/issues?state=open", 'issues', callback
getClosedIssues: (callback) -> Issues.get "/repos/#{Issues.config.github_user}/#{Issues.config.github_project}/issues?state=closed", 'issues', callback
getMilestones: (callback) -> Issues.get "/repos/#{Issues.config.github_user}/#{Issues.config.github_project}/milestones", 'milestones', callback
# Convert GitHub ISO 8601 to JS timestamp at the beginning of UTC day!'
dateToTime: (date) ->
# Some milestones do not have due dates.
return 0 unless date?
# Add miliseconds and create `Date`.
date = new Date(date[0...date.length - 1] + '.000' + date.charAt date.length-1)
# Move to the beginning of the day (at 9am BST, 8am GMT, so we do not worry about time shifts).
date = new Date date.getFullYear(), date.getMonth(), date.getDate(), 9
# Return timestamp.
date.getTime()
# Format issues for display in a listing.
format: (issue) ->
# Format the timestamps.
if issue.created_at? then issue.created_at = new Date(Issues.dateToTime(issue.created_at)).toUTCString()
if issue.updated_at? then issue.updated_at = new Date(Issues.dateToTime(issue.updated_at)).toUTCString()
issue
# Config filters.
app = flatiron.app
app.use flatiron.plugins.http,
'before': [
connect.favicon()
connect.static __dirname + '/public'
]
# Eco templating.
app.use
name: "eco-templating"
attach: (options) ->
app.eco = (path, data, cb) ->
fs.readFile "./templates/#{path}.eco", "utf8", (err, template) ->
if err then cb err, null
else
try
cb null, eco.render template, data
catch e
cb e, null
# Show burndown chart.
getBurndown = ->
console.log 'Get burndown chart'
resources = 3 ; store = { 'issues': [], 'milestones': [] }
done = (data, type) =>
# One less to do.
resources--
switch type
when 'issues' then store.issues = store.issues.concat data
when 'milestones' then store.milestones = store.milestones.concat data
# Are we done?
if resources is 0
# Do we actually have an open milestone?
if store.milestones.length > 0
# Store the current milestone and its size.
current = { 'milestone': {}, 'diff': +Infinity, 'size': 0 }
# Determine the 'current' milestone
now = new Date().getTime()
for milestone in store.milestones
# JS expects more accuracy.
due = Issues.dateToTime milestone['due_on']
# Is this the 'current' one?
diff = due - now
if diff > 0 and diff < current.diff
current.milestone = milestone ; current.diff = diff ; current.due = due
# Create n dict with all dates in the milestone span.
days = {} ; totalDays = 0 ; totalNonWorkingDays = 0
day = Issues.dateToTime current.milestone.created_at
while day < current.due
# Do we have weekends configured?
if Issues.config.weekend? and Issues.config.weekend instanceof Array
dayOfWeek = new Date(day).getDay()
# Fix stupid Abrahamic tradition.
if dayOfWeek is 0 then dayOfWeek = 7
# Does this day fall on a weekend?
if dayOfWeek in Issues.config.weekend
totalNonWorkingDays += 1
# Save the day.
days[day] = { 'issues': [], 'actual': 0, 'ideal': 0, 'weekend': true }
else
# Save the day.
days[day] = { 'issues': [], 'actual': 0, 'ideal': 0, 'weekend': false }
else
# Save the day.
days[day] = { 'issues': [], 'actual': 0, 'ideal': 0, 'weekend': false }
# Shift by a day.
day += 1000 * 60 * 60 * 24
# Increase the total count.
totalDays += 1
# Now go through the issues and place them to the appropriate days.
for issue in store.issues
# This milestone?
if issue.milestone?.number is current.milestone.number
# Has a size label?
if issue.labels?
issue.size = do (issue) ->
for label in issue.labels
if label.name.indexOf("size ") is 0
return parseInt label.name[5...]
if issue.size?
# Increase the total size of the milestone.
current.size += issue.size
# Is it closed?
if issue.closed_at?
# Save it.
days[Issues.dateToTime issue.closed_at]['issues'].push issue
# Calculate the predicted daily velocity.
dailyIdeal = current['size'] / (totalDays - totalNonWorkingDays) ; ideal = current['size']
# Go through the days and save the number of outstanding issues size.
for day, d of days
# Does this day have any closed issues? Reduce the total for this milestone.
for issue in d['issues']
current['size'] -= issue.size
# Save the oustanding count for that day.
days[day].actual = current['size']
# Save the predicted velocity for that day if it is not a non-working day.
ideal -= dailyIdeal unless days[day].weekend
days[day].ideal = ideal
# Finally send to client.
app.eco 'burndown',
'days': days
'project': Issues.config.project_name
'base_url': Issues.config.base_url
, (err, html) =>
throw err if err
@res.writeHead 200, "content-type": "text/html"
@res.write html
@res.end()
else
# No current milestone.
app.eco 'empty',
'project': Issues.config.project_name
'base_url': Issues.config.base_url
, (err, html) =>
throw err if err
@res.writeHead 200, "content-type": "text/html"
@res.write html
@res.end()
# Get Milestones, Opened and Closed Tickets.
Issues.getMilestones done
Issues.getOpenIssues done
Issues.getClosedIssues done
# Show open issues.
getIssues = ->
console.log 'Get open issues'
Issues.getOpenIssues (issues) =>
# Replace the dates in issues with nice dates.
issues = ( Issues.format(issue) for issue in issues )
app.eco 'issues',
'issues': issues
'project': Issues.config.project_name
'base_url': Issues.config.base_url
, (err, html) =>
throw err if err
@res.writeHead 200, "content-type": "text/html"
@res.write html
@res.end()
# Routes
app.router.path '/', ->
@get getBurndown
app.router.path '/burndown', ->
@get getBurndown
app.router.path '/issues', ->
@get getIssues
# Fetch config and start server.
fs.readFile "config.yml", "utf8", (err, data) ->
Issues.config = yaml.load data
app.start process.env.PORT, (err) ->
throw err if err
console.log "Listening on port #{app.server.address().port}"