# frozen_string_literal: true

require 'asana'

class AsanaService < Service
  include ActionView::Helpers::UrlHelper

  prop_accessor :api_key, :restrict_to_branch
  validates :api_key, presence: true, if: :activated?

  def title
    'Asana'
  end

  def description
    s_('AsanaService|Add commit messages as comments to Asana tasks')
  end

  def help
    docs_link = link_to _('Learn more.'), Rails.application.routes.url_helpers.help_page_url('user/project/integrations/asana'), target: '_blank', rel: 'noopener noreferrer'
    s_('Add commit messages as comments to Asana tasks. %{docs_link}').html_safe % { docs_link: docs_link.html_safe }
  end

  def self.to_param
    'asana'
  end

  def fields
    [
      {
        type: 'text',
        name: 'api_key',
        title: 'API key',
        help: s_('AsanaService|User Personal Access Token. User must have access to the task. All comments are attributed to this user.'),
        # Example Personal Access Token from Asana docs
        placeholder: '0/68a9e79b868c6789e79a124c30b0',
        required: true
      },
      {
        type: 'text',
        name: 'restrict_to_branch',
        title: 'Restrict to branch (optional)',
        help: s_('AsanaService|Comma-separated list of branches to be automatically inspected. Leave blank to include all branches.')
      }
    ]
  end

  def self.supported_events
    %w(push)
  end

  def client
    @_client ||= begin
      Asana::Client.new do |c|
        c.authentication :access_token, api_key
      end
    end
  end

  def execute(data)
    return unless supported_events.include?(data[:object_kind])

    # check the branch restriction is poplulated and branch is not included
    branch = Gitlab::Git.ref_name(data[:ref])
    branch_restriction = restrict_to_branch.to_s
    if branch_restriction.present? && branch_restriction.index(branch).nil?
      return
    end

    user = data[:user_name]
    project_name = project.full_name

    data[:commits].each do |commit|
      push_msg = s_("AsanaService|%{user} pushed to branch %{branch} of %{project_name} ( %{commit_url} ):") % { user: user, branch: branch, project_name: project_name, commit_url: commit[:url] }
      check_commit(commit[:message], push_msg)
    end
  end

  def check_commit(message, push_msg)
    # matches either:
    # - #1234
    # - https://app.asana.com/0/{project_gid}/{task_gid}
    # optionally preceded with:
    # - fix/ed/es/ing
    # - close/s/d
    # - closing
    issue_finder = %r{(fix\w*|clos[ei]\w*+)?\W*(?:https://app\.asana\.com/\d+/\w+/(\w+)|#(\w+))}i

    message.scan(issue_finder).each do |tuple|
      # tuple will be
      # [ 'fix', 'id_from_url', 'id_from_pound' ]
      taskid = tuple[2] || tuple[1]

      begin
        task = Asana::Resources::Task.find_by_id(client, taskid)
        task.add_comment(text: "#{push_msg} #{message}")

        if tuple[0]
          task.update(completed: true)
        end
      rescue => e
        log_error(e.message)
        next
      end
    end
  end
end