//-- copyright
// OpenProject is a project management system.
// Copyright (C) 2012-2017 the OpenProject Foundation (OPF)
//
// 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) 2006-2017 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 doc/COPYRIGHT.rdoc for more details.
//++

// ╭───────────────────────────────────────────────────────────────╮
// │  _____ _                _ _                                   │
// │ |_   _(_)_ __ ___   ___| (_)_ __   ___  ___                   │
// │   | | | | '_ ` _ \ / _ \ | | '_ \ / _ \/ __|                  │
// │   | | | | | | | | |  __/ | | | | |  __/\__ \                  │
// │   |_| |_|_| |_| |_|\___|_|_|_| |_|\___||___/                  │
// ├───────────────────────────────────────────────────────────────┤
// │ Javascript library that fetches and plots timelines for the   │
// │ OpenProject timelines module.                                 │
// ╰───────────────────────────────────────────────────────────────╯

module.exports = function() {

  ProjectAssociation = {
    identifier: 'project_associations',
    all: function(timeline) {
      // collect all project associations.
      var r = timeline.project_associations;
      var result = [];
      for (var key in r) {
        if (r.hasOwnProperty(key)) {
          result.push(r[key]);
        }
      }
      return result;
    },
    getOrigin: function() {
      return this.origin;
    },
    getTarget: function() {
      return this.project;
    },
    getOther: function(project) {
      var origin = this.getOrigin();
      var target = this.getTarget();
      if (project.id === origin.id) {
        return target;
      } else if (project.id === target.id) {
        return origin;
      }
      return null;
    },
    getInvolvedProjects: function() {
      return [this.getOrigin(), this.getTarget()];
    },
    involves: function(project) {
      var inv = this.getInvolvedProjects();

      return (
        project !== undefined &&
        inv[0] !== undefined &&
        inv[1] !== undefined &&
        (project.id === inv[0].id || project.id === inv[1].id)
      );
    }
  };

  return ProjectAssociation;
};