module ProjectsHelper

  def link_to_project(project)

    link_to [project.namespace.becomes(Namespace), project], title: h(project.name) do

      title = content_tag(:span, project.name, class: 'project-name')

      if project.namespace

        namespace = content_tag(:span, "#{project.namespace.human_name} / ", class: 'namespace-name')

        title = namespace + title
      end

      title
    end

  end

  def link_to_member_avatar(author, opts = {})
    default_opts = { avatar: true, name: true, size: 16, author_class: 'author', title: ":name" }
    opts = default_opts.merge(opts)

    image_tag(avatar_icon(author, opts[:size]), width: opts[:size], class: "avatar avatar-inline #{"s#{opts[:size]}" if opts[:size]}", alt: '') if opts[:avatar]

  end

  def link_to_member(project, author, opts = {}, &block)

    default_opts = { avatar: true, name: true, size: 16, author_class: 'author', title: ":name", tooltip: false }

    opts = default_opts.merge(opts)

    return "(deleted)" unless author

    author_html = ""

    # Build avatar image tag

    author_html << image_tag(avatar_icon(author, opts[:size]), width: opts[:size], class: "avatar avatar-inline #{"s#{opts[:size]}" if opts[:size]} #{opts[:avatar_class] if opts[:avatar_class]}", alt: '') if opts[:avatar]

    # Build name span tag

    if opts[:by_username]
      author_html << content_tag(:span, sanitize("@#{author.username}"), class: opts[:author_class]) if opts[:name]
    else

      tooltip_data = { placement: 'top' }

      author_html << content_tag(:span, sanitize(author.name), class: [opts[:author_class], ('has-tooltip' if opts[:tooltip])], title: (author.to_reference if opts[:tooltip]), data: (tooltip_data if opts[:tooltip])) if opts[:name]

    end

    author_html << capture(&block) if block

    author_html = author_html.html_safe

    if opts[:name]

      link_to(author_html, user_path(author), class: "author_link #{"#{opts[:extra_class]}" if opts[:extra_class]} #{"#{opts[:mobile_classes]}" if opts[:mobile_classes]}").html_safe

    else

      title = opts[:title].sub(":name", sanitize(author.name))

      link_to(author_html, user_path(author), class: "author_link has-tooltip", title: title, data: { container: 'body' }).html_safe

    end

  end

  def project_title(project)

    namespace_link =
      if project.group

        group_title(project.group)

      else
        owner = project.namespace.owner
        link_to(simple_sanitize(owner.name), user_path(owner))

      end

    project_link = link_to simple_sanitize(project.name), project_path(project), { class: "project-item-select-holder" }

    if current_user

      project_link << button_tag(type: 'button', class: 'dropdown-toggle-caret js-projects-dropdown-toggle', aria: { label: 'Toggle switch project dropdown' }, data: { target: '.js-dropdown-menu-projects', toggle: 'dropdown', order_by: 'last_activity_at' }) do

        icon("chevron-down")
      end

    end

    "#{namespace_link} / #{project_link}".html_safe

  end

  def remove_project_message(project)
    "You are going to remove #{project.name_with_namespace}.\n Removed project CANNOT be restored!\n Are you ABSOLUTELY sure?"
  end

  def transfer_project_message(project)
    "You are going to transfer #{project.name_with_namespace} to another owner. Are you ABSOLUTELY sure?"
  end

  def remove_fork_project_message(project)

    "You are going to remove the fork relationship to source project #{@project.forked_from_project.name_with_namespace}.  Are you ABSOLUTELY sure?"

  end

  def project_nav_tabs
    @nav_tabs ||= get_project_nav_tabs(@project, current_user)
  end

  def project_nav_tab?(name)
    project_nav_tabs.include? name
  end

  def project_for_deploy_key(deploy_key)

    if deploy_key.has_access_to?(@project)

      @project
    else

      deploy_key.projects.find do |project|
        can?(current_user, :read_project, project)
      end

    end
  end

  def can_change_visibility_level?(project, current_user)
    return false unless can?(current_user, :change_visibility_level, project)

    if project.forked?
      project.forked_from_project.visibility_level > Gitlab::VisibilityLevel::PRIVATE
    else
      true
    end
  end

  def license_short_name(project)

    license = project.repository.license
    license&.nickname || license&.name || 'LICENSE'

  end

  def last_push_event
    return unless current_user

    project_ids = [@project.id]
    if fork = current_user.fork_of(@project)
      project_ids << fork.id
    end

    current_user.recent_push(project_ids)
  end

  def project_feature_access_select(field)
    # Don't show option "everyone with access" if project is private
    options = project_feature_options

    if @project.private?

      level = @project.project_feature.send(field)

      options.delete('Everyone with access')

      highest_available_option = options.values.max if level == ProjectFeature::ENABLED

    end

    options = options_for_select(options, selected: highest_available_option || @project.project_feature.public_send(field))

    content_tag(
      :select,
      options,
      name: "project[project_feature_attributes][#{field}]",
      id: "project_project_feature_attributes_#{field}",
      class: "pull-right form-control #{repo_children_classes(field)}",
      data: { field: field }
    ).html_safe

  end

  def link_to_autodeploy_doc
    link_to 'About auto deploy', help_page_path('ci/autodeploy/index'), target: '_blank'
  end

  def autodeploy_flash_notice(branch_name)
    "Branch <strong>#{truncate(sanitize(branch_name))}</strong> was created. To set up auto deploy, \
      choose a GitLab CI Yaml template and commit your changes. #{link_to_autodeploy_doc}".html_safe
  end

  def project_list_cache_key(project)

    key = [project.namespace.cache_key, project.cache_key, controller.controller_name, controller.action_name, current_application_settings.cache_key, 'v2.4']

    key << pipeline_status_cache_key(project.pipeline_status) if project.pipeline_status.has_status?

    key
  end

  def load_pipeline_status(projects)
    Gitlab::Cache::Ci::ProjectPipelineStatus.
      load_in_batch_for_projects(projects)
  end

  private

  def repo_children_classes(field)
    needs_repo_check = [:merge_requests_access_level, :builds_access_level]
    return unless needs_repo_check.include?(field)

    classes = "project-repo-select js-repo-select"
    classes << " disabled" unless @project.feature_available?(:repository, current_user)

    classes
  end

  def get_project_nav_tabs(project, current_user)

    nav_tabs = [:home]

    if !project.empty_repo? && can?(current_user, :download_code, project)

      nav_tabs << [:files, :commits, :network, :graphs, :forks]

    end

    if project.repo_exists? && can?(current_user, :read_merge_request, project)

      nav_tabs << :merge_requests
    end

    if Gitlab.config.registry.enabled && can?(current_user, :read_container_image, project)

      nav_tabs << :container_registry

    end

    tab_ability_map = {
      environments: :read_environment,
      milestones:   :read_milestone,
      pipelines:    :read_pipeline,
      snippets:     :read_project_snippet,
      settings:     :admin_project,
      builds:       :read_build,
      labels:       :read_label,
      issues:       :read_issue,
      team:         :read_project_member,
      wiki:         :read_wiki
    }

    tab_ability_map.each do |tab, ability|
      if can?(current_user, ability, project)
        nav_tabs << tab
      end

    end

    nav_tabs.flatten
  end

  def project_lfs_status(project)
    if project.lfs_enabled?

      content_tag(:span, class: 'lfs-enabled') do

        'Enabled'
      end
    else

      content_tag(:span, class: 'lfs-disabled') do

        'Disabled'
      end
    end
  end

  def git_user_name
    if current_user
      current_user.name
    else
      "Your name"
    end
  end

  def git_user_email
    if current_user
      current_user.email
    else
      "your@email.com"
    end
  end

  def default_url_to_repo(project = @project)

    case default_clone_protocol
    when 'ssh'

      project.ssh_url_to_repo
    else

      project.http_url_to_repo(current_user)

    end

  end

  def default_clone_protocol

    if allowed_protocols_present?
      enabled_protocol

    else

      if !current_user || current_user.require_ssh_key?
        gitlab_config.protocol
      else
        'ssh'
      end

    end

  end

  def project_last_activity(project)
    if project.last_activity_at

      time_ago_with_tooltip(project.last_activity_at, placement: 'bottom', html_class: 'last_activity_time_ago')

    else
      "Never"
    end
  end

  def add_special_file_path(project, file_name:, commit_message: nil, branch_name: nil, context: nil)

    namespace_project_new_blob_path(
      project.namespace,
      project,
      project.default_branch || 'master',
      file_name:      file_name,

      commit_message: commit_message || "Add #{file_name.downcase}",

      branch_name: branch_name,

      context: context

    )

  end

  def add_koding_stack_path(project)
    namespace_project_new_blob_path(
      project.namespace,
      project,
      project.default_branch || 'master',
      file_name:      '.koding.yml',
      commit_message: "Add Koding stack script",
      content: <<-CONTENT.strip_heredoc
        provider:
          aws:
            access_key: '${var.aws_access_key}'
            secret_key: '${var.aws_secret_key}'
        resource:
          aws_instance:
            #{project.path}-vm:
              instance_type: t2.nano
              user_data: |-

                # Created by GitLab UI for :>

                echo _KD_NOTIFY_@Installing Base packages...@

                apt-get update -y
                apt-get install git -y

                echo _KD_NOTIFY_@Cloning #{project.name}...@

                export KODING_USER=${var.koding_user_username}
                export REPO_URL=#{root_url}${var.koding_queryString_repo}.git
                export BRANCH=${var.koding_queryString_branch}

                sudo -i -u $KODING_USER git clone $REPO_URL -b $BRANCH

                echo _KD_NOTIFY_@#{project.name} cloned.@
      CONTENT
    )
  end

  def koding_project_url(project = nil, branch = nil, sha = nil)
    if project
      import_path = "/Home/Stacks/import"

      repo = project.path_with_namespace
      branch ||= project.default_branch
      sha ||= project.commit.short_id

      path = "#{import_path}?repo=#{repo}&branch=#{branch}&sha=#{sha}"

      return URI.join(current_application_settings.koding_url, path).to_s
    end

    current_application_settings.koding_url
  end

  def contribution_guide_path(project)

    if project && contribution_guide = project.repository.contribution_guide

      namespace_project_blob_path(
        project.namespace,
        project,
        tree_join(project.default_branch,

                  contribution_guide.name)
      )
    end
  end

  def readme_path(project)
    filename_path(project, :readme)
  end

  def changelog_path(project)

    filename_path(project, :changelog)

  end

  def license_path(project)

    filename_path(project, :license_blob)

  end

  def version_path(project)

    filename_path(project, :version)

  end

  def ci_configuration_path(project)
    filename_path(project, :gitlab_ci_yml)
  end

  def project_wiki_path_with_version(proj, page, version, is_newest)
    url_params = is_newest ? {} : { version_id: version }

    namespace_project_wiki_path(proj.namespace, proj, page, url_params)

  end

  def project_status_css_class(status)
    case status
    when "started"
      "active"
    when "failed"
      "danger"
    when "finished"
      "success"
    end
  end

  def readme_cache_key

    sha = @project.commit.try(:sha) || 'nil'

    [@project.path_with_namespace, sha, "readme"].join('-')

  end

  def current_ref
    @ref || @repository.try(:root_ref)
  end

  def filename_path(project, filename)
    if project && blob = project.repository.send(filename)
      namespace_project_blob_path(

        project.namespace,
        project,
        tree_join(project.default_branch, blob.name)

      )
    end
  end

  def sanitize_repo_path(project, message)

    return '' unless message.present?

    exports_path = File.join(Settings.shared['path'], 'tmp/project_exports')
    filtered_message = message.strip.gsub(exports_path, "[REPO EXPORT PATH]")

    filtered_message.gsub(project.repository_storage_path.chomp('/'), "[REPOS PATH]")

  end

  def project_feature_options
    {
      'Disabled' => ProjectFeature::DISABLED,
      'Only team members' => ProjectFeature::PRIVATE,
      'Everyone with access' => ProjectFeature::ENABLED
    }
  end

  def project_child_container_class(view_path)
    view_path == "projects/issues/issues" ? "prepend-top-default" : "project-show-#{view_path}"
  end

  def project_issues(project)
    IssuesFinder.new(current_user, project_id: project.id).execute
  end

  def visibility_select_options(project, selected_level)

    level_options = Gitlab::VisibilityLevel.values.each_with_object([]) do |level, level_options|
      next if restricted_levels.include?(level)

      level_options << [

        visibility_level_label(level),
        { data: { description: visibility_level_description(level, project) } },
        level
      ]
    end

    options_for_select(level_options, selected_level)
  end

  def restricted_levels
    return [] if current_user.admin?

    current_application_settings.restricted_visibility_levels || []

  end

end