# frozen_string_literal: true

# Redmine - project management software
# Copyright (C) 2006-  Jean-Philippe Lang
#
# 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.

module IconsHelper
  include Redmine::Themes::Helper

  DEFAULT_ICON_SIZE = "18"
  DEFAULT_SPRITE = "icons"

  def sprite_source(icon_name, sprite: DEFAULT_SPRITE, plugin: nil)
    if plugin
      "plugin_assets/#{plugin}/#{sprite}.svg"
    elsif current_theme && current_theme.icons(sprite).include?(icon_name)
      current_theme.image_path("#{sprite}.svg")
    else
      "#{sprite}.svg"
    end
  end

  def sprite_icon(icon_name, label = nil, icon_only: false, size: DEFAULT_ICON_SIZE, style: :outline, css_class: nil, sprite: DEFAULT_SPRITE, plugin: nil, rtl: false)
    sprite = sprite_source(icon_name, sprite: sprite, plugin: plugin)

    svg_icon = svg_sprite_icon(icon_name, size: size, style: style, css_class: css_class, sprite: sprite, rtl: rtl)

    if label
      label_classes = ["icon-label"]
      label_classes << "hidden" if icon_only

      svg_icon + content_tag(:span, label, class: label_classes.join(' '))
    else
      svg_icon
    end
  end

  def file_icon(entry, name, **)
    if entry.is_dir?
      sprite_icon("folder", name, **)
    else
      icon_name = icon_for_mime_type(Redmine::MimeType.of(name))
      sprite_icon(icon_name, name, **)
    end
  end

  def principal_icon(principal, **)
    raise ArgumentError, "First argument has to be a Principal, was #{principal.inspect}" unless principal.is_a?(Principal)

    principal_class = principal.class.name.downcase
    sprite_icon('group', **) if ['groupanonymous', 'groupnonmember', 'group'].include?(principal_class)
  end

  def activity_event_type_icon(event_type, **)
    icon_name = case event_type
                when 'reply'
                  'comments'
                when 'time-entry'
                  'time'
                when 'message'
                  'comment'
                else
                  event_type
                end

    sprite_icon(icon_name, **)
  end

  def scm_change_icon(action, name, **)
    icon_name = case action
                when 'A'
                  "add"
                when 'D'
                  "circle-minus"
                else
                  "circle-dot-filled"
                end
    sprite_icon(icon_name, name, size: 14, **)
  end

  def notice_icon(type, **)
    icon_name = case type
                when 'notice'
                  'checked'
                when 'warning', 'error'
                  'warning'
                end

    sprite_icon(icon_name, **)
  end

  def file_type_icon(mime_type, ...)
    icon_name = icon_for_mime_type(mime_type)
    sprite_icon(icon_name, ...)
  end

  private

  def svg_sprite_icon(icon_name, size: DEFAULT_ICON_SIZE, style: :outline, sprite: DEFAULT_SPRITE, css_class: nil, rtl: false)
    css_classes = "s#{size} icon-svg"
    css_classes += " icon-svg-filled" if style == :filled
    css_classes += " #{css_class}" unless css_class.nil?
    css_classes += " icon-rtl" if rtl

    content_tag(
      :svg,
      content_tag(:use, '', { 'href' => "#{asset_path(sprite)}#icon--#{icon_name}" }),
      class: css_classes,
      aria: {
        hidden: true
      }
    )
  end

  def icon_for_mime_type(mime)
    if %w(text/x-c text/x-csharp text/x-java text/x-php
          text/x-ruby text/xml text/css text/html text/css text/html
          application/pdf application/zip application/gzip application/javascript).include?(mime)
      icon_name = mime.tr('/', '-')
    else
      top_level_type, subtype = mime.to_s.split('/')
      icon_name =
        case top_level_type
        when 'audio' then 'file-music'
        when 'image' then 'photo'
        when 'text'
          %w(markdown plain x-textile).include?(subtype) ? 'text-plain' : nil
        when 'video' then 'movie'
        else
          # MIME type mapping
          {
            # Microsoft Office Open XML documents
            # Do not add legacy Office formats (.doc, .xls, .ppt) here because
            # Redmine does not provide attachment preview for these formats.
            'application/vnd.openxmlformats-officedocument.presentationml.presentation' => 'file-type-ppt',
            'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet' => 'file-type-xls',
            'application/vnd.openxmlformats-officedocument.wordprocessingml.document' => 'file-type-docx'
          }[mime.to_s]
        end
    end
    icon_name || 'file'
  end
end