github-changelog-generator/lib/github_changelog_generator.rb

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#!/usr/bin/env ruby
require 'github_api'
require 'json'
require 'httparty'
require_relative 'github_changelog_generator/parser'
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class ChangelogGenerator
attr_accessor :options, :all_tags, :github
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def initialize()
@options = Parser.parse_options
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if @options[:token]
@github = Github.new oauth_token: @options[:token]
else
@github = Github.new
end
@all_tags = self.get_all_tags
@pull_requests = self.get_all_closed_pull_requests
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@issues = self.get_all_issues
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@tag_times_hash = {}
end
def print_json(json)
puts JSON.pretty_generate(json)
end
def exec_command(cmd)
exec_cmd = "cd #{$project_path} && #{cmd}"
%x[#{exec_cmd}]
end
def get_all_closed_pull_requests
request = @github.pull_requests.list @options[:user], @options[:project], :state => 'closed'
pull_requests = request.body
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if @options[:verbose]
puts 'Receive all pull requests'
end
pull_requests
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end
def compund_changelog
if @options[:verbose]
puts 'Generating changelog:'
end
log = "# Changelog\n\n"
if @options[:last]
log += self.generate_log_between_tags(self.all_tags[0], self.all_tags[1])
elsif @options[:tag1] && @options[:tag2]
tag1 = @options[:tag1]
tag2 = @options[:tag2]
tags_strings = []
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self.all_tags.each { |x| tags_strings.push(x['name']) }
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if tags_strings.include?(tag1)
if tags_strings.include?(tag2)
hash = Hash[tags_strings.map.with_index.to_a]
index1 = hash[tag1]
index2 = hash[tag2]
log += self.generate_log_between_tags(self.all_tags[index1], self.all_tags[index2])
else
puts "Can't find tag #{tag2} -> exit"
exit
end
else
puts "Can't find tag #{tag1} -> exit"
exit
end
else
log += self.generate_log_for_all_tags
end
if @options[:verbose]
puts log
end
log += "\n\n\\* *This changelog was generated by [github_changelog_generator](https://github.com/skywinder/Github-Changelog-Generator)*"
output_filename = "#{@options[:output]}"
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File.open(output_filename, 'w') { |file| file.write(log) }
puts "Done! Generated log placed in #{output_filename}"
end
def generate_log_for_all_tags
log = ''
for index in 1 ... self.all_tags.size
log += self.generate_log_between_tags(self.all_tags[index-1], self.all_tags[index])
end
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log += self.generate_log_before_tag(self.all_tags.last)
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log
end
def is_megred(number)
@github.pull_requests.merged? @options[:user], @options[:project], number
end
def get_all_tags
url = "https://api.github.com/repos/#{@options[:user]}/#{@options[:project]}/tags"
if @options[:verbose]
puts "Receive tags for repo #{url}"
end
if @options[:token]
response = HTTParty.get(url,
:headers => {'Authorization' => "token #{@options[:token]}",
'User-Agent' => 'Changelog-Generator'})
else
response = HTTParty.get(url,
:headers => {'User-Agent' => 'Changelog-Generator'})
end
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json_parse = JSON.parse(response.body)
if @options[:verbose]
puts "Found #{json_parse.count} tags"
end
json_parse
end
def generate_log_between_tags(since_tag, till_tag)
since_tag_time = self.get_time_of_tag(since_tag)
till_tag_time = self.get_time_of_tag(till_tag)
# if we mix up tags order - lits fix it!
if since_tag_time > till_tag_time
since_tag, till_tag = till_tag, since_tag
since_tag_time, till_tag_time = till_tag_time, since_tag_time
end
till_tag_name = till_tag['name']
pull_requests = Array.new(@pull_requests)
pull_requests.delete_if { |req|
if req[:merged_at]
t = Time.parse(req[:merged_at]).utc
tag_is_later_since = t > since_tag_time
tag_is_before_till = t <= till_tag_time
in_range = (tag_is_later_since) && (tag_is_before_till)
!in_range
else
true
end
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}
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issues = Array.new(@issues)
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issues.delete_if { |issue|
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if issue[:closed_at]
t = Time.parse(issue[:closed_at]).utc
tag_is_later_since = t > since_tag_time
tag_is_before_till = t <= till_tag_time
in_range = (tag_is_later_since) && (tag_is_before_till)
!in_range
else
true
end
}
self.create_log(pull_requests, issues, till_tag_name, till_tag_time)
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end
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def generate_log_before_tag(tag)
tag_time = self.get_time_of_tag(tag)
tag_name = tag['name']
pull_requests = Array.new(@pull_requests)
pull_requests.delete_if { |req|
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if req[:merged_at]
t = Time.parse(req[:merged_at]).utc
t > tag_time
else
true
end
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}
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issues = Array.new(@issues)
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issues.delete_if { |issue|
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if issue[:closed_at]
t = Time.parse(issue[:closed_at]).utc
t > tag_time
else
true
end
}
self.create_log(pull_requests, issues, tag_name, tag_time)
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end
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def create_log(pull_requests, issues, tag_name, tag_time)
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# Generate tag name and link
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trimmed_tag = tag_name.tr('v', '')
log = "## [#{trimmed_tag}] (https://github.com/#{@options[:user]}/#{@options[:project]}/tree/#{tag_name})\n"
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#Generate date string:
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time_string = tag_time.strftime @options[:format]
log += "#### #{time_string}\n"
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if @options[:pulls]
# Generate pull requests:
if pull_requests
pull_requests.each { |dict|
merge = "#{dict[:title]} [\\##{dict[:number]}](https://github.com/#{@options[:user]}/#{@options[:project]}/pull/#{dict[:number]})\n\n"
log += "- #{merge}"
}
end
end
if @options[:issues]
# Generate issues:
if issues
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issues.each { |dict|
is_bug = false
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is_enhancement = false
dict.labels.each { |label|
if label.name == 'bug'
is_bug = true
end
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if label.name == 'enhancement'
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is_enhancement = true
end
}
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intro = 'Closed issue'
if is_bug
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intro = 'Fixed bug'
end
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if is_enhancement
intro = 'Implemented enhancement'
end
merge = "*#{intro}:* #{dict[:title]} [\\##{dict[:number]}](https://github.com/#{@options[:user]}/#{@options[:project]}/issues/#{dict[:number]})\n\n"
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log += "- #{merge}"
}
end
end
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log
end
def get_time_of_tag(prev_tag)
if @tag_times_hash[prev_tag['name']]
return @tag_times_hash[prev_tag['name']]
end
if @options[:verbose]
puts "Get time for tag #{prev_tag['name']}"
end
github_git_data_commits_get = @github.git_data.commits.get @options[:user], @options[:project], prev_tag['commit']['sha']
time_string = github_git_data_commits_get['committer']['date']
Time.parse(time_string)
@tag_times_hash[prev_tag['name']] = Time.parse(time_string)
end
def get_all_issues
all_issues = []
issues_req = @github.issues.list user: @options[:user], repo: @options[:project], state: 'closed', filter: 'all', labels: nil
filtered_issues = issues_req.body.select { |issues|
(issues.labels.map { |issue| issue.name} & @options[:labels]).any?
}
if @options[:add_issues_wo_labels]
issues_wo_labels = issues_req.body.select {
|issues| !issues.labels.map { |issue| issue.name}.any?
}
filtered_issues.concat(issues_wo_labels)
end
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if @options[:verbose]
puts "Receive all closed issues with labels #{@options[:labels]}: #{all_issues.count} issues"
end
filtered_issues
end
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end
if __FILE__ == $0
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changelog_generator = ChangelogGenerator.new
changelog_generator.compund_changelog
end