class Project < ActiveRecord::Base
  VISIBILITIES = ['open', 'hidden']
  MAX_OWN_PROJECTS = 32000
  NAME_REGEXP = /[\w\-\+\.]+/

  belongs_to :owner, :polymorphic => true, :counter_cache => :own_projects_count
  belongs_to :maintainer, :class_name => "User"

  has_many :issues, :dependent => :destroy
  has_many :pull_requests, :dependent => :destroy, :foreign_key => 'to_project_id'
  has_many :labels, :dependent => :destroy

  has_many :project_imports, :dependent => :destroy
  has_many :project_to_repositories, :dependent => :destroy
  has_many :repositories, :through => :project_to_repositories
  has_many :project_tags, :dependent => :destroy
  has_many :project_statistics, :dependent => :destroy
  
  has_many :build_lists, :dependent => :destroy
  has_many :hooks, :dependent => :destroy

  has_many :relations, :as => :target, :dependent => :destroy
  has_many :collaborators, :through => :relations, :source => :actor, :source_type => 'User'
  has_many :groups,        :through => :relations, :source => :actor, :source_type => 'Group'

  has_many :packages, :class_name => "BuildList::Package", :dependent => :destroy
  has_and_belongs_to_many :advisories # should be without :dependent => :destroy

  validates :name, :uniqueness => {:scope => [:owner_id, :owner_type], :case_sensitive => false},
                   :presence => true,
                   :format => {:with => /\A#{NAME_REGEXP}\z/,
                   :message => I18n.t("activerecord.errors.project.uname")}
  validates :maintainer_id, :presence => true, :unless => :new_record?
  validates :url, :presence => true, :format => {:with => /\Ahttps?:\/\/[\S]+\z/}, :if => :mass_import
  validates :add_to_repository_id, :presence => true, :if => :mass_import
  validates :visibility, :presence => true, :inclusion => {:in => VISIBILITIES}
  validate { errors.add(:base, :can_have_less_or_equal, :count => MAX_OWN_PROJECTS) if owner.projects.size >= MAX_OWN_PROJECTS }
  validate :check_default_branch
  # throws validation error message from ProjectToRepository model into Project model
  validate do |project|
    project.project_to_repositories.each do |p_to_r|
      next if p_to_r.valid?
      p_to_r.errors.full_messages.each{ |msg| errors[:base] << msg }
    end
    errors.delete :project_to_repositories
  end

  attr_accessible :name, :description, :visibility, :srpm, :is_package, :default_branch,
                  :has_issues, :has_wiki, :maintainer_id, :publish_i686_into_x86_64,
                  :url, :srpms_list, :mass_import, :add_to_repository_id, :architecture_dependent
  attr_readonly :owner_id, :owner_type

  scope :recent, order("lower(#{table_name}.name) ASC")
  scope :search_order, order("CHAR_LENGTH(#{table_name}.name) ASC")
  scope :search, lambda {|q|
    q = q.to_s.strip
    by_name("%#{q}%").search_order if q.present?
  }
  scope :by_name, lambda {|name| where("#{table_name}.name ILIKE ?", name) if name.present?}
  scope :by_owner_and_name, lambda { |*params|
    term = params.map(&:strip).join('/').downcase
    where("lower(concat(owner_uname, '/', name)) ILIKE ?", "%#{term}%") if term.present?
  }
  scope :by_visibilities, lambda {|v| where(:visibility => v)}
  scope :opened, where(:visibility => 'open')
  scope :package, where(:is_package => true)
  scope :addable_to_repository, lambda { |repository_id| where %Q(
    projects.id NOT IN (
      SELECT
        ptr.project_id
      FROM
        project_to_repositories AS ptr
      WHERE (ptr.repository_id = #{ repository_id })
    )
  ) }
  scope :by_owners, lambda { |group_owner_ids, user_owner_ids|
    where("(#{table_name}.owner_id in (?) AND #{table_name}.owner_type = 'Group') OR (#{table_name}.owner_id in (?) AND #{table_name}.owner_type = 'User')", group_owner_ids, user_owner_ids)
  }

  before_validation :truncate_name, :on => :create
  before_save lambda { self.owner_uname = owner.uname if owner_uname.blank? || owner_id_changed? || owner_type_changed? }
  before_create :set_maintainer
  after_save :attach_to_personal_repository
  after_update :set_new_git_head
  after_update lambda { update_path_to_project(name_was) }, :if => :name_changed?

  has_ancestry :orphan_strategy => :rootify #:adopt not available yet

  attr_accessor :url, :srpms_list, :mass_import, :add_to_repository_id

  include Modules::Models::Owner
  include Modules::Models::Git
  include Modules::Models::Wiki
  include Modules::Models::UrlHelper

  class << self
    def find_by_owner_and_name(owner_name, project_name)
      where(:owner_uname => owner_name, :name => project_name).first ||
        by_owner_and_name(owner_name, project_name).first
    end

    def find_by_owner_and_name!(owner_name, project_name)
      find_by_owner_and_name(owner_name, project_name) or raise ActiveRecord::RecordNotFound
    end
  end

  def init_mass_import
    Project.perform_later :clone_build, :run_mass_import, url, srpms_list, visibility, owner, add_to_repository_id
  end

  def name_with_owner
    "#{owner_uname || owner.uname}/#{name}"
  end

  def to_param
    name
  end

  def all_members
    members | (owner_type == 'User' ? [owner] : owner.members)
  end

  def members
    collaborators | groups.map(&:members).flatten
  end

  def add_member(member, role = 'admin')
    Relation.add_member(member, self, role)
  end

  def remove_member(member)
    Relation.remove_member(member, self)
  end

  def platforms
    @platforms ||= repositories.map(&:platform).uniq
  end

  def admins
    admins = self.collaborators.where("relations.role = 'admin'")
    grs = self.groups.where("relations.role = 'admin'")
    if self.owner.is_a? Group
      grs = grs.where("relations.actor_id != ?", self.owner.id)
      admins = admins | owner.members.where("relations.role = 'admin'")
    end
    admins = admins | grs.map(&:members).flatten # member of the admin group is admin
  end

  def public?
    visibility == 'open'
  end

  def owner?(user)
    owner == user
  end

  def git_project_address auth_user
    opts = default_url_options
    opts.merge!({:user => auth_user.authentication_token, :password => ''}) unless self.public?
    Rails.application.routes.url_helpers.project_url(self.owner.uname, self.name, opts) + '.git'
    #path #share by NFS
  end

  def build_for(mass_build, repository_id, arch =  Arch.find_by_name('i586'), priority = 0, increase_rt = false)
    build_for_platform  = mass_build.build_for_platform
    save_to_platform    = mass_build.save_to_platform
    user                = mass_build.user
    # Select main and project platform repository(contrib, non-free and etc)
    # If main does not exist, will connect only project platform repository
    # If project platform repository is main, only main will be connect
    main_rep_id = build_for_platform.repositories.find_by_name(%w(main base)).try(:id)
    include_repos = ([main_rep_id] << (save_to_platform.main? ? repository_id : nil)).compact.uniq

    project_version = if repo.commits("#{save_to_platform.name}").try(:first).try(:id)
                        save_to_platform.name
                      elsif repo.commits("#{build_for_platform.name}").try(:first).try(:id)
                        build_for_platform.name
                      else
                        default_branch
                      end
    
    increase_release_tag(project_version, user, "MassBuild##{mass_build.id}: Increase release tag") if increase_rt

    build_list = build_lists.build do |bl|
      bl.save_to_platform       = save_to_platform
      bl.build_for_platform     = build_for_platform
      bl.update_type            = 'newpackage'
      bl.arch                   = arch
      bl.project_version        = project_version
      bl.user                   = user
      bl.auto_publish           = mass_build.auto_publish?
      bl.include_repos          = include_repos
      bl.extra_repositories     = mass_build.extra_repositories
      bl.extra_build_lists      = mass_build.extra_build_lists
      bl.priority               = priority
      bl.mass_build_id          = mass_build.id
      bl.save_to_repository_id  = repository_id
    end
    build_list.save
  end

  def fork(new_owner, new_name = name)
    new_name = new_name.presence || name
    dup.tap do |c|
      c.name = new_name
      c.parent_id = id
      c.owner = new_owner
      c.updated_at = nil; c.created_at = nil # :id = nil
      # Hack to call protected method :)
      c.send :set_maintainer
      c.save
    end
  end

  def destroy_project_from_repository(repository)
    AbfWorker::BuildListsPublishTaskManager.destroy_project_from_repository self, repository
  end

  def default_head treeish = nil # maybe need change 'head'?
    # Attention!
    # repo.commit(nil) => <Grit::Commit "b6c0f81deb17590d22fc07ba0bbd4aa700256f61">
    # repo.commit(nil.to_s) => nil
    return treeish if treeish.present? && repo.commit(treeish).present?
    if repo.branches_and_tags.map(&:name).include?(treeish || default_branch)
      treeish || default_branch
    else
      repo.branches_and_tags[0].try(:name) || default_branch
    end
  end

  def get_project_tag_sha1(tag, format)
    format_id = ProjectTag::FORMATS["#{tag_file_format(format)}"]
    project_tag = project_tags.where(:tag_name => tag.name, :format_id => format_id).first

    return project_tag.sha1 if project_tag && project_tag.commit_id == tag.commit.id && Modules::Models::FileStoreClean.file_exist_on_file_store?(project_tag.sha1)

    archive = archive_by_treeish_and_format tag.name, format
    sha1    = Digest::SHA1.file(archive[:path]).hexdigest
    unless Modules::Models::FileStoreClean.file_exist_on_file_store? sha1
      token = User.find_by_uname('rosa_system').authentication_token
      begin
        resp = JSON `curl --user #{token}: -POST -F 'file_store[file]=@#{archive[:path]};filename=#{name}-#{tag.name}.#{tag_file_format(format)}' #{APP_CONFIG['file_store_url']}/api/v1/upload`
      rescue # Dont care about it
        resp = {}
      end
      return nil if resp['sha1_hash'].nil?
    end
    if project_tag
      project_tag.destroy_files_from_file_store(project_tag.sha1)
      project_tag.update_attributes(:sha1 => sha1)
    else
      project_tags.create(
        :tag_name   => tag.name,
        :format_id  => format_id,
        :commit_id  => tag.commit.id,
        :sha1       => sha1
      )
    end
    return sha1
  end

  def archive_by_treeish_and_format(treeish, format)
    @archive ||= create_archive treeish, format
  end

  # Finds release tag and increase its:
  # 'Release: %mkrel 4mdk' => 'Release: 5mdk'
  # 'Release: 4' => 'Release: 5'
  # Finds release macros and increase it:
  # '%define release %mkrel 4mdk' => '%define release 5mdk'
  # '%define release 4' => '%define release 5'
  def self.replace_release_tag(content)

    build_new_release = Proc.new do |release, combine_release|
      if combine_release.present?
        r = combine_release.split('.').last.to_i
        release << combine_release.gsub(/.[\d]+$/, '') << ".#{r + 1}"
      else
        release = release.to_i + 1
      end
      release 
    end

    content.gsub(/^Release:(\s+)(%mkrel\s+)?(\d+)([.\d]+)?(mdk)?$/) do |line|
      tab, mkrel, mdk = $1, $2, $5
      "Release:#{tab}#{build_new_release.call($3, $4)}#{mdk}"
    end.gsub(/^%define\s+release:?(\s+)(%mkrel\s+)?(\d+)([.\d]+)?(mdk)?$/) do |line|
      tab, mkrel, mdk = $1, $2, $5
      "%define release#{tab}#{build_new_release.call($3, $4)}#{mdk}"
    end
  end

  protected

  def increase_release_tag(project_version, user, message)
    blob = repo.tree(project_version).contents.find{ |n| n.is_a?(Grit::Blob) && n.name =~ /.spec$/ }
    return unless blob

    raw = Grit::GitRuby::Repository.new(repo.path).get_raw_object_by_sha1(blob.id)
    content = self.class.replace_release_tag raw.content
    return if content == raw.content

    update_file(blob.name, content.gsub("\r", ''),
      :message => message,
      :actor => user,
      :head => project_version
    )
  end


  def create_archive(treeish, format)
    file_name = "#{name}-#{treeish}"
    fullname  = "#{file_name}.#{tag_file_format(format)}"
    file = Tempfile.new fullname,  File.join(Rails.root, 'tmp')
    system("cd #{path}; git archive --format=#{format == 'zip' ? 'zip' : 'tar'} --prefix=#{file_name}/ #{treeish} #{format == 'zip' ? '' : ' | gzip -9'} > #{file.path}")
    file.close
    {
      :path     => file.path,
      :fullname => fullname
    }
  end

  def tag_file_format(format)
    format == 'zip' ? 'zip' : 'tar.gz'
  end

  def truncate_name
    self.name = name.strip if name
  end

  def attach_to_personal_repository
    owner_repos = self.owner.personal_platform.repositories
    if is_package
      repositories << self.owner.personal_repository unless repositories.exists?(:id => owner_repos.pluck(:id))
    else
      repositories.delete owner_repos
    end
  end

  def set_maintainer
    if maintainer_id.blank?
      self.maintainer_id = (owner_type == 'User') ? self.owner_id : self.owner.owner_id
    end
  end

  def set_new_git_head
    `cd #{path} && git symbolic-ref HEAD refs/heads/#{self.default_branch}` if self.default_branch_changed? && self.repo.branches.map(&:name).include?(self.default_branch)
  end

  def update_path_to_project(old_name)
    new_name, new_path = name, path
    self.name = old_name
    old_path  = path
    self.name = new_name
    FileUtils.mv old_path, new_path, :force => true if Dir.exists?(old_path)

    pull_requests_old_path = File.join(APP_CONFIG['git_path'], 'pull_requests', owner.uname, old_name)
    if Dir.exists?(pull_requests_old_path)
      FileUtils.mv  pull_requests_old_path,
                    File.join(APP_CONFIG['git_path'], 'pull_requests', owner.uname, new_name),
                    :force => true
    end

    PullRequest.where(:from_project_id => id).update_all(:from_project_name => new_name)

    PullRequest.where(:from_project_id => id).each{ |p| p.update_relations(old_name) }
    pull_requests.where('from_project_id != to_project_id').each(&:update_relations)
  end
  later :update_path_to_project, :queue => :clone_build

  def check_default_branch
    if self.repo.branches.count > 0 && self.repo.branches.map(&:name).exclude?(self.default_branch)
      errors.add :default_branch, I18n.t('activerecord.errors.project.default_branch')
    end
  end
end