Class: User

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# File 'frontend/app/models/user.rb', line 44

def self.become_user(context, username)
  uri = JSONModel(:user).uri_for("#{username}/become-user")

  response = JSONModel::HTTP.post_form(uri)

  if response.code == '200'
    backend_session = ASUtils.json_parse(response.body)

    self.establish_session(context, backend_session, username)

    true
  else
    false
  end
end

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# File 'backend/app/model/user.rb', line 88

def self.broadcast_changes
  Notifications.notify("REFRESH_ACLS")
end

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# File 'backend/app/model/user.rb', line 12

def self.create_from_json(json, opts = {})
  if !opts[:is_hidden_user]
    agent = JSONModel(:agent_person).from_hash(
              :publish => false,
              :names => [{
                :primary_name => json.name,
                :source => 'local',
                :rules => 'local',
                :name_order => 'direct',
                :sort_name_auto_generate => true
            }])

    CrudHelpers.with_record_conflict_reporting(AgentPerson, agent) do
      agent_obj = AgentPerson.create_from_json(agent, :system_generated => true)

      opts['agent_record_type'] = :agent_person
      opts['agent_record_id'] = agent_obj.id
    end
  end

  obj = super(json, opts)
  make_admin_if_requested(obj, json)
  obj
end

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# File 'frontend/app/models/user.rb', line 6

def self.establish_session(context, backend_session, username)
  context.session[:session] = backend_session["session"]

  store_permissions(backend_session["user"]["permissions"], context)

  context.session[:user_uri] = backend_session["user"]["uri"]
  context.session[:user] = username
end

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# File 'frontend/app/models/user.rb', line 31

def self.login(username, password)
  uri = JSONModel(:user).uri_for("#{username}/login")

  response = JSONModel::HTTP.post_form(uri, :password => password)

  if response.code == '200'
    ASUtils.json_parse(response.body)
  else
    nil
  end
end

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# File 'backend/app/model/user.rb', line 44

def self.make_admin_if_requested(obj, json)

  return if !RequestContext.get(:apply_admin_access)

  # Nothing to do if these already agree
  begin
    return if (json.is_admin === obj.can?(:administer_system))
  rescue PermissionNotFound
    # System is being bootstrapped and permissions aren't here yet.  That's
    # fine.
  end

  RequestContext.in_global_repo do
    admins_group = Group.this_repo[:group_code => Group.ADMIN_GROUP_CODE]

    if admins_group
      if json.is_admin
        admins_group.add_user(obj)
      else
        admins_group.remove_user(obj)
      end

      self.broadcast_changes
    end
  end
end

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# File 'backend/app/model/user.rb', line 103

def self.PUBLIC_USERNAME
  AppConfig[:public_username]
end

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# File 'frontend/app/models/user.rb', line 16

def self.refresh_permissions(context)
  user = self.find('current-user')

  if user
    store_permissions(user.permissions, context)
  end
end

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# File 'backend/app/model/user.rb', line 98

def self.SEARCH_USERNAME
  AppConfig[:search_username]
end

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# File 'backend/app/model/user.rb', line 72

def self.sequel_to_jsonmodel(objs, opts = {})
  jsons = super

  jsons.zip(objs).each do |json, obj|
    if obj.agent_record_id
      json['agent_record'] = {'ref' => uri_for(obj.agent_record_type, obj.agent_record_id)}
    end

    if obj.can?(:administer_system)
      json['is_admin'] = true
    end
  end
  jsons
end

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# File 'backend/app/model/user.rb', line 108

def self.STAFF_USERNAME
  AppConfig[:staff_username]
end

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# File 'frontend/app/models/user.rb', line 25

def self.store_permissions(permissions, context)
  context.send(:cookies).signed[:archivesspace_permissions] = ASUtils.to_json(Permissions.pack(permissions))
  context.session[:last_permission_refresh] = Time.now.to_i
end

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# File 'backend/app/model/user.rb', line 113

def self.unlisted_user_ids
  @@unlisted_user_ids ||= User.filter(:is_hidden_user => 1).collect {|user| user.id}
end

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# File 'backend/app/model/user.rb', line 131

def anonymous?
  false
end

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# File 'backend/app/model/user.rb', line 118

def before_save
  super

  self.username = self.username.downcase
end

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# File 'backend/app/model/user.rb', line 154

def can?(permission_code, opts = {})
  if derived_permissions.include?(permission_code.to_s)
    return true
  end

  permission = Permission[:permission_code => permission_code.to_s]
  global_repo = Repository[:repo_code => Repository.GLOBAL]

  # False if the permission does not exist (or the derived permission is not assigned to this user)
  return false if permission.nil?

  if permission[:level] == "repository" && self.class.active_repository.nil?
    raise("Problem when checking permission: #{permission.permission_code} " +
          "is a repository-level permission, but no repository was set")
  end

  ((self.class.db[:group].
                        join(:group_user, :group_id => :id).
                        join(:group_permission, :group_id => :group_id).
                        filter(:user_id => self.id,
                               :permission_id => permission.id,
                               :repo_id => [self.class.active_repository, global_repo.id].reject(&:nil?)).
                        count) >= 1)
end

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# File 'backend/app/model/user.rb', line 230

def delete
  raise AccessDeniedException.new("Can't delete system user") if self.is_system_user == 1

  DBAuth.delete_user(self.username)
 
  # transfer all import jobs to the admin user
  admin_user = User.select(:id).where( :username => "admin" ).first
  Job.filter(:owner_id => self.id).update( :owner_id => admin_user.id )
  
  Preference.filter(:user_id => self.id).delete
  self.remove_all_group

  super

  if self.agent_record_id
    AgentPerson[self.agent_record_id].delete
  end
end

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# File 'backend/app/model/user.rb', line 136

def derived_permissions
  actual_permissions =
    self.class.db[:group].
         join(:group_user, :group_id => :id).
         join(:group_permission, :group_id => :group_id).
         join(:permission, :id => :permission_id).
         filter(:user_id => self.id).
         select(:permission_code).map {|row| row[:permission_code]}


  actual_permissions.map {|p| Permission.derived_permissions_for(p) }.flatten.uniq
end

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# File 'backend/app/model/user.rb', line 180

def permissions
  result = {}

  derived = derived_permissions


  # Crikey...
  ds = self.class.db[:group].
    join(:group_user, :group_id => :id).
    join(:group_permission, :group_id => :group_id).
    join(:permission, :id => :permission_id).
    join(:repository, :id => :group__repo_id).
    filter(:user_id => self.id).
    distinct.
    select(Sequel.qualify(:repository, :id).as(:repo_id), Sequel.qualify(:repository, :repo_code).as(:repo_code), :permission_code)

  global_permissions = []

  ds.each do |row|
    repository_uri = JSONModel(:repository).uri_for(row[:repo_id])
    result[repository_uri] ||= derived.clone
    result[repository_uri] << row[:permission_code]

    if row[:repo_code] == Repository.GLOBAL
      global_permissions << row[:permission_code]
    end
  end

  # Attach permissions in the global repository under the symbolic name too
  result[Repository.GLOBAL] = global_permissions + derived

  result
end

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# File 'backend/app/model/user.rb', line 38

def update_from_json(json, opts = {}, apply_nested_records = true)
  self.class.make_admin_if_requested(self, json)
  super
end

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# File 'backend/app/model/user.rb', line 125

def validate
  validates_unique(:username,
                   :message => "Username '#{self.username}' is already in use")
end