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require 'slack-notifier'
class SlackMessage
def initialize(params)
@after = params.fetch(:after)
@before = params.fetch(:before)
@commits = params.fetch(:commits, [])
@project_name = params.fetch(:project_name)
@project_url = params.fetch(:project_url)
@ref = params.fetch(:ref).gsub('refs/heads/', '')
@username = params.fetch(:user_name)
end
def pretext
format(message)
end
def attachments
return [] if new_branch? || removed_branch?
commit_message_attachments
end
private
attr_reader :after
attr_reader :before
attr_reader :commits
attr_reader :project_name
attr_reader :project_url
attr_reader :ref
attr_reader :username
def message
if new_branch?
new_branch_message
elsif removed_branch?
removed_branch_message
else
push_message
end
end
def format(string)
Slack::Notifier::LinkFormatter.format(string)
end
def new_branch_message
"#{username} pushed new branch #{branch_link} to #{project_link}"
end
def removed_branch_message
"#{username} removed branch #{ref} from #{project_link}"
end
def push_message
"#{username} pushed to branch #{branch_link} of #{project_link} (#{compare_link})"
end
def commit_messages
commits.each_with_object('') do |commit, str|
str << compose_commit_message(commit)
end.chomp
end
def commit_message_attachments
[{ text: format(commit_messages), color: attachment_color }]
end
def compose_commit_message(commit)
author = commit.fetch(:author).fetch(:name)
id = commit.fetch(:id)[0..8]
message = commit.fetch(:message)
url = commit.fetch(:url)
"[#{id}](#{url}): #{message} - #{author}\n"
end
def new_branch?
before =~ /000000/
end
def removed_branch?
after =~ /000000/
end
def branch_url
"#{project_url}/commits/#{ref}"
end
def compare_url
"#{project_url}/compare/#{before}...#{after}"
end
def branch_link
"[#{ref}](#{branch_url})"
end
def project_link
"[#{project_name}](#{project_url})"
end
def compare_link
"[Compare changes](#{compare_url})"
end
def attachment_color
'#345'
end
end
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