discourse/app/controllers/admin/themes_controller.rb

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require_dependency 'upload_creator'
require 'base64'
class Admin::ThemesController < Admin::AdminController
skip_before_action :check_xhr, only: [:show, :preview]
def preview
@theme = Theme.find(params[:id])
redirect_to path("/"), flash: { preview_theme_key: @theme.key }
end
def upload_asset
path = params[:file].path
File.open(path) do |file|
filename = params[:file]&.original_filename || File.basename(path)
upload = UploadCreator.new(file, filename, for_theme: true).create_for(current_user.id)
if upload.errors.count > 0
render_json_error upload
else
render json: { upload_id: upload.id }, status: :created
end
end
end
def import
@theme = nil
if params[:theme]
json = JSON::parse(params[:theme].read)
theme = json['theme']
@theme = Theme.new(name: theme["name"], user_id: current_user.id)
theme["theme_fields"]&.each do |field|
if field["raw_upload"]
begin
tmp = Tempfile.new
tmp.binmode
file = Base64.decode64(field["raw_upload"])
tmp.write(file)
tmp.rewind
upload = UploadCreator.new(tmp, field["filename"]).create_for(current_user.id)
field["upload_id"] = upload.id
ensure
tmp.unlink
end
end
@theme.set_field(
target: field["target"],
name: field["name"],
value: field["value"],
type_id: field["type_id"],
upload_id: field["upload_id"]
)
end
if @theme.save
log_theme_change(nil, @theme)
render json: @theme, status: :created
else
render json: @theme.errors, status: :unprocessable_entity
end
elsif params[:remote]
@theme = RemoteTheme.import_theme(params[:remote])
render json: @theme, status: :created
else
render json: @theme.errors, status: :unprocessable_entity
end
end
def index
@theme = Theme.order(:name).includes(:theme_fields, :remote_theme)
@color_schemes = ColorScheme.all.to_a
light = ColorScheme.new(name: I18n.t("color_schemes.default"))
@color_schemes.unshift(light)
payload = {
themes: ActiveModel::ArraySerializer.new(@theme, each_serializer: ThemeSerializer),
extras: {
color_schemes: ActiveModel::ArraySerializer.new(@color_schemes, each_serializer: ColorSchemeSerializer)
}
}
respond_to do |format|
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format.json { render json: payload }
end
end
def create
@theme = Theme.new(name: theme_params[:name],
user_id: current_user.id,
user_selectable: theme_params[:user_selectable] || false,
color_scheme_id: theme_params[:color_scheme_id])
set_fields
respond_to do |format|
if @theme.save
update_default_theme
log_theme_change(nil, @theme)
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format.json { render json: @theme, status: :created }
else
format.json { render json: @theme.errors, status: :unprocessable_entity }
end
end
end
def update
@theme = Theme.find(params[:id])
original_json = ThemeSerializer.new(@theme, root: false).to_json
[:name, :color_scheme_id, :user_selectable].each do |field|
if theme_params.key?(field)
@theme.send("#{field}=", theme_params[field])
end
end
if theme_params.key?(:child_theme_ids)
expected = theme_params[:child_theme_ids].map(&:to_i)
@theme.child_theme_relation.to_a.each do |child|
if expected.include?(child.child_theme_id)
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expected.reject! { |id| id == child.child_theme_id }
else
child.destroy
end
end
Theme.where(id: expected).each do |theme|
@theme.add_child_theme!(theme)
end
end
set_fields
save_remote = false
if params[:theme][:remote_check]
@theme.remote_theme.update_remote_version
save_remote = true
end
if params[:theme][:remote_update]
@theme.remote_theme.update_from_remote
save_remote = true
end
respond_to do |format|
if @theme.save
@theme.remote_theme.save! if save_remote
update_default_theme
log_theme_change(original_json, @theme)
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format.json { render json: @theme, status: :created }
else
format.json {
error = @theme.errors[:color_scheme] ? I18n.t("themes.bad_color_scheme") : I18n.t("themes.other_error")
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render json: { errors: [ error ] }, status: :unprocessable_entity
}
end
end
end
def destroy
@theme = Theme.find(params[:id])
StaffActionLogger.new(current_user).log_theme_destroy(@theme)
@theme.destroy
respond_to do |format|
format.json { head :no_content }
end
end
def show
@theme = Theme.find(params[:id])
respond_to do |format|
format.json do
check_xhr
render json: ThemeSerializer.new(@theme)
end
format.any(:html, :text) do
raise RenderEmpty.new if request.xhr?
response.headers['Content-Disposition'] = "attachment; filename=#{@theme.name.parameterize}.dcstyle.json"
response.sending_file = true
render json: ThemeWithEmbeddedUploadsSerializer.new(@theme, root: 'theme')
end
end
end
private
def update_default_theme
if theme_params.key?(:default)
is_default = theme_params[:default].to_s == "true"
if @theme.key == SiteSetting.default_theme_key && !is_default
Theme.clear_default!
elsif is_default
@theme.set_default!
end
end
end
def theme_params
@theme_params ||=
begin
# deep munge is a train wreck, work around it for now
params[:theme][:child_theme_ids] ||= [] if params[:theme].key?(:child_theme_ids)
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params.require(:theme).permit(
:name,
:color_scheme_id,
:default,
:user_selectable,
theme_fields: [:name, :target, :value, :upload_id, :type_id],
child_theme_ids: []
)
end
end
def set_fields
return unless fields = theme_params[:theme_fields]
fields.each do |field|
@theme.set_field(
target: field[:target],
name: field[:name],
value: field[:value],
type_id: field[:type_id],
upload_id: field[:upload_id]
)
end
end
def log_theme_change(old_record, new_record)
StaffActionLogger.new(current_user).log_theme_change(old_record, new_record)
end
end