class Project < ActiveRecord::Base
  include ArchivableModel, SearchableModel

  enum visibility: { hidden: 0, visible: 1 }

  validates :name,
    presence: true,
    length: { minimum: 4, maximum: 30 },
    uniqueness: { scope: :organization, case_sensitive: false }
  validates :visibility, presence: true
  validates :organization, presence: true

  belongs_to :created_by, foreign_key: 'created_by_id', class_name: 'User'
  belongs_to :last_modified_by, foreign_key: 'last_modified_by_id', class_name: 'User'
  belongs_to :archived_by, foreign_key: 'archived_by_id', class_name: 'User'
  belongs_to :restored_by, foreign_key: 'restored_by_id', class_name: 'User'
  has_many :user_projects, inverse_of: :project
  has_many :users, through: :user_projects
  has_many :experiments, inverse_of: :project
  has_many :project_comments, inverse_of: :project
  has_many :comments, through: :project_comments
  has_many :activities, inverse_of: :project
  has_many :tags, inverse_of: :project
  has_many :reports, inverse_of: :project, dependent: :destroy
  has_many :report_elements, inverse_of: :project, dependent: :destroy
  belongs_to :organization, inverse_of: :projects

  def self.search(user, include_archived, query = nil, page = 1)

    if query
      a_query = query.strip
      .gsub("_","\\_")
      .gsub("%","\\%")
      .split(/\s+/)
      .map {|t|  "%" + t + "%" }
    else
      a_query = query
    end


    org_ids =
      Organization
      .joins(:user_organizations)
      .where("user_organizations.user_id = ?", user.id)
      .select("id")
      .distinct

    if include_archived
      new_query = Project
        .distinct
        .joins(:user_projects)
        .where("projects.organization_id IN (?)", org_ids)
        .where("projects.visibility = 1 OR user_projects.user_id = ?", user.id)
        .where_attributes_like(:name, a_query)

    else
      new_query = Project
        .distinct
        .joins(:user_projects)
        .where("projects.organization_id IN (?)", org_ids)
        .where("projects.visibility = 1 OR user_projects.user_id = ?", user.id)
        .where_attributes_like(:name, a_query)
        .where("projects.archived = ?", false)
    end

    # Show all results if needed
    if page == SHOW_ALL_RESULTS
      new_query
    else
      new_query
        .limit(SEARCH_LIMIT)
        .offset((page - 1) * SEARCH_LIMIT)
    end
  end

  def last_activities(count = 20)
    activities.order(created_at: :desc).first(count)
  end

  # Get project comments order by created_at time. Results are paginated
  # using last comment id and per_page parameters.
  def last_comments(last_id = 1, per_page = 20)
    last_id = 9999999999999 if last_id <= 1
    Comment.joins(:project_comment)
      .where(project_comments: {project_id: id})
      .where('comments.id <  ?', last_id)
      .order(created_at: :desc)
      .limit(per_page)
  end

  def unassigned_users
    User
    .joins("INNER JOIN user_organizations ON users.id = user_organizations.user_id ")
    .where("user_organizations.organization_id = ?", organization)
    .where.not(confirmed_at: nil)
    .where("users.id NOT IN (?)", UserProject.where(project: self).select(:id).distinct)
  end

  def user_role(user)
    unless self.users.include? user
      return nil
    end

    return (self.user_projects.select { |up| up.user == user }).first.role
  end

  def active_experiments
    experiments.is_archived(false)
  end

  def archived_experiments
    experiments.is_archived(true)
  end

  def project_my_modules
    MyModule.where('"experiment_id" IN (?)', experiments.select(:id))
  end

  def space_taken
    st = 0
    project_my_modules.find_each do |my_module|
      st += my_module.space_taken
    end
    st
  end

  # Writes to user log.
  def log(message)
    final = "[%s] %s" % [name, message]
    organization.log(final)
  end

  def assigned_samples
    Sample.joins(:my_modules).where(my_modules: {
                                      id: my_modules_ids.split(',')
                                    })
  end

  def my_modules_ids
    ids = active_experiments.map do |exp|
      exp.my_modules.pluck(:id) if exp.my_modules
    end
    ids.delete_if { |i| i.flatten.empty? }
    ids.join(', ')
  end
end