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path: root/app/controllers/issue_relations_controller.rb
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# frozen_string_literal: true

# Redmine - project management software
# Copyright (C) 2006-  Jean-Philippe Lang
#
# 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.

class IssueRelationsController < ApplicationController
  helper :issues

  before_action :find_issue, :authorize, :only => [:index, :create]
  before_action :find_relation, :only => [:show, :destroy]

  accept_api_auth :index, :show, :create, :destroy

  def index
    @relations = @issue.relations

    respond_to do |format|
      format.html {head :ok}
      format.api
    end
  end

  def show
    raise Unauthorized unless @relation.visible?

    respond_to do |format|
      format.html {head :ok}
      format.api
    end
  end

  def create
    saved = false
    params_relation = params[:relation]
    unsaved_relations = []

    relation_issues_to_id.each do |issue_to_id|
      params_relation[:issue_to_id] = issue_to_id

      @relation = IssueRelation.new
      @relation.issue_from = @issue
      @relation.safe_attributes = params_relation
      @relation.init_journals(User.current)

      begin
        saved = @relation.save
      rescue ActiveRecord::RecordNotUnique
        @relation.errors.add :base, :taken
      end

      unsaved_relations << @relation unless saved
    end

    respond_to do |format|
      format.html {redirect_to issue_path(@issue)}
      format.js do
        @relations = select_relations(@issue)
        @unsaved_relations = unsaved_relations
      end
      format.api do
        if saved
          render :action => 'show', :status => :created, :location => relation_url(@relation)
        else
          render_validation_errors(@relation)
        end
      end
    end
  end

  def destroy
    raise Unauthorized unless @relation.deletable?

    @relation.init_journals(User.current)
    @relation.destroy

    respond_to do |format|
      format.html {redirect_to issue_path(@relation.issue_from)}
      format.js do
        find_issue
        @relations = select_relations(@issue)
      end
      format.api  {render_api_ok}
    end
  end

  private

  def find_issue
    @issue = Issue.find(params[:issue_id])
    @project = @issue.project
  rescue ActiveRecord::RecordNotFound
    render_404
  end

  def find_relation
    @relation = IssueRelation.find(params[:id])
  rescue ActiveRecord::RecordNotFound
    render_404
  end

  def relation_issues_to_id
    issue_to_id = params[:relation].require(:issue_to_id)
    case issue_to_id
    when String
      issue_to_id = issue_to_id.split(',').reject(&:blank?)
    when Integer
      issue_to_id = [issue_to_id]
    end
    issue_to_id
  rescue ActionController::ParameterMissing => e
    # We return a empty array just to loop once and return a validation error
    # ToDo: Find a better method to return an error if the param is missing.
    ['']
  end

  def select_relations(issue)
    issue.reload.relations.select {|r| r.other_issue(issue) && r.other_issue(issue).visible?}
  end
end