class Github

# File lib/sakanax/github.rb, line 5
def initialize(config)
  @client = Octokit::Client.new(access_token: ENV['GITHUB_TOKEN'])
  @repository = ENV['GITHUB_REPOSITORY']
  @yaml = load_config(config)
end

# File lib/sakanax/github.rb, line 36
def detect_files(sha)
  duplicated_files = []
  get_pr_including_target_commit(sha).each do |pr|
    duplicated_files.push(get_files_with_changes(pr) & @yaml['detect_files'])
    duplicated_files.flatten!
  end
  duplicated_files
end

# File lib/sakanax/github.rb, line 25
def get_files_with_changes(pull_request)
  files = []
  @client.pull_request_files(@repository, pull_request).each do |file|
    files.push(file[:filename])
  end
  puts '[INFO] No file changed in the specified PullRequest' if files.empty?
  files
end

# File lib/sakanax/github.rb, line 12
def get_pr_including_target_commit(sha)
  pr_including_target_commit = []
  fetch_opened_pull_requests.each do |pr|
    @client.pull_request_commits(@repository, pr).each do |commit|
      pr_including_target_commit.push(pr) if sha == commit[:sha]
    end
  end
  puts "[INFO] Target sha: #{sha} is not exist in open PullRequests" \
        if pr_including_target_commit.empty?
  pr_including_target_commit
end

# File lib/sakanax/github.rb, line 55
def fetch_opened_pull_requests
  opened_pull_requests = []
  @client.pull_requests(@repository).each do |pr|
    opened_pull_requests.push(pr[:number])
  end
  opened_pull_requests
end

# File lib/sakanax/github.rb, line 47
def load_config(config)
  return YAML.load_file(config) if File.exist?(config)

  puts "[INFO] Config file #{config} does not exist"
  exit 0
end