//-- copyright
// OpenProject is a project management system.
// Copyright (C) 2012-2015 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) 2006-2013 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 doc/COPYRIGHT.rdoc for more details.
//++

module.exports = function($http, PathHelper, apiV3) {
  var indentedName = function(name, level) {
    var indentation = '';
    
    for (var i = 0; i < level; i++) {
      indentation = indentation + '--';
    }
    
    return indentation + " " + name;
  };
  var assignAncestorLevels = function(projects) {
    var ancestors = [];
    
    angular.forEach(projects, function (project) {
      while (ancestors.length > 0 && project.parent_id !== _.last(ancestors).id) {
        // this helper method only reflects hierarchies if nested projects follow one another
        ancestors.pop();
      }

      project['level'] = ancestors.length;
      project['name'] = indentedName(project['name'], project['level']);

      if (!project['leaf?']) {
        ancestors.push(project);
      }
    });
    
    return projects;
  };

  var ProjectService = {
    getProject: function(projectIdentifier) {
      var url = PathHelper.apiProjectPath(projectIdentifier);

      return $http.get(url).then(function(response) {
        return response.data.project;
      });
    },

    getProjects: function() {
      var url = PathHelper.apiProjectsPath();

      return ProjectService.doQuery(url)
        .then(function(projects){
          return assignAncestorLevels(projects);
        });
    },

    getSubProjects: function(projectIdentifier) {
      var url = PathHelper.apiProjectSubProjectsPath(projectIdentifier);

      return ProjectService.doQuery(url);
    },

    getWorkPackageProject: function(workPackage) {
      return ProjectService.doQuery(workPackage.links.project.props.href);
    },

    doQuery: function(url, params) {
      return $http.get(url, { params: params })
        .then(function(response){
          return response.data.projects;
        });
    },

    fetchProjectResource: function (projectIdentifier) {
      return apiV3.one('projects', projectIdentifier).get();
    }
  };

  return ProjectService;
};