# frozen_string_literal: true

#-- copyright
# OpenProject is an open source project management software.
# Copyright (C) the OpenProject GmbH
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License version 3.
#
# OpenProject is a fork of ChiliProject, which is a fork of Redmine. The copyright follows:
# Copyright (C) 2006-2013 Jean-Philippe Lang
# Copyright (C) 2010-2013 the ChiliProject Team
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
#
# See COPYRIGHT and LICENSE files for more details.
#++

class GiteaPullRequest < ApplicationRecord
  LABEL_KEYS = %w[color name].freeze

  has_and_belongs_to_many :work_packages
  belongs_to :gitea_user, optional: true
  belongs_to :merged_by, optional: true, class_name: "GiteaUser"

  enum :state, {
    open: "open",
    closed: "closed",
    merged: "merged"
  }

  validates :gitea_html_url,
            :number,
            :repository,
            :state,
            :title,
            :gitea_updated_at,
            presence: true
  validates :body,
            presence: { unless: :partial? }
  validate :validate_labels_schema

  scope :without_work_package, -> { where.missing(:work_packages) }

  def self.find_by_gitea_identifiers(url:, id: nil, initialize: false)
    raise ArgumentError, "needs a url" if url.blank?

    found = find_by(gitea_html_url: url)
    found || (new(gitea_id: id, gitea_html_url: url) if initialize)
  end

  def partial?
    [body].all?(&:nil?)
  end

  private

  def validate_labels_schema
    return if labels.nil?
    return if labels.all? { |label| label.keys.sort == LABEL_KEYS }

    errors.add(:labels, :invalid_schema)
  end
end