discourse/app/controllers/admin/themes_controller.rb

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require_dependency 'upload_creator'
require_dependency 'theme_store/tgz_exporter'
require 'base64'
class Admin::ThemesController < Admin::AdminController
skip_before_action :check_xhr, only: [:show, :preview, :export]
def preview
@theme = Theme.find(params[:id])
redirect_to path("/?preview_theme_id=#{@theme.id}")
end
def upload_asset
path = params[:file].path
hijack do
File.open(path) do |file|
filename = params[:file]&.original_filename || File.basename(path)
upload = UploadCreator.new(file, filename, for_theme: true).create_for(theme_user.id)
if upload.errors.count > 0
render_json_error upload
else
render json: { upload_id: upload.id }, status: :created
end
end
end
end
def generate_key_pair
require 'sshkey'
k = SSHKey.generate
render json: {
private_key: k.private_key,
public_key: k.ssh_public_key
}
end
def import
@theme = nil
if params[:theme] && params[:theme].content_type == "application/json"
# .dcstyle.json import. Deprecated, but still available to allow conversion
json = JSON::parse(params[:theme].read)
theme = json['theme']
@theme = Theme.new(name: theme["name"], user_id: theme_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(theme_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]
begin
branch = params[:branch] ? params[:branch] : nil
@theme = RemoteTheme.import_theme(params[:remote], theme_user, private_key: params[:private_key], branch: branch)
render json: @theme, status: :created
rescue RemoteTheme::ImportError => e
render_json_error e.message
end
elsif params[:bundle] || (params[:theme] && ["application/x-gzip", "application/gzip"].include?(params[:theme].content_type))
# params[:bundle] used by theme CLI. params[:theme] used by admin UI
bundle = params[:bundle] || params[:theme]
theme_id = params[:theme_id]
match_theme_by_name = !!params[:bundle] && !params.key?(:theme_id) # Old theme CLI behavior, match by name. Remove Jan 2020
begin
@theme = RemoteTheme.update_tgz_theme(bundle.path, match_theme: match_theme_by_name, user: theme_user, theme_id: theme_id)
log_theme_change(nil, @theme)
render json: @theme, status: :created
rescue RemoteTheme::ImportError => e
render_json_error e.message
end
else
render_json_error I18n.t("themes.import_error.unknown_file_type"), status: :unprocessable_entity
end
end
def index
@themes = Theme.order(:name).includes(:child_themes,
:parent_themes,
:remote_theme,
:theme_settings,
:settings_field,
:locale_fields,
:user,
:color_scheme,
theme_fields: :upload
)
@color_schemes = ColorScheme.all.includes(:theme, color_scheme_colors: :color_scheme).to_a
light = ColorScheme.new(name: I18n.t("color_schemes.light"))
@color_schemes.unshift(light)
payload = {
themes: ActiveModel::ArraySerializer.new(@themes, 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: theme_user.id,
user_selectable: theme_params[:user_selectable] || false,
color_scheme_id: theme_params[:color_scheme_id],
component: [true, "true"].include?(theme_params[:component]))
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
update_settings
update_translations
handle_switch
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
@theme.reload
log_theme_change(original_json, @theme)
format.json { render json: @theme, status: :ok }
else
format.json do
error = @theme.errors.full_messages.join(", ").presence
error = I18n.t("themes.bad_color_scheme") if @theme.errors[:color_scheme].present?
error ||= I18n.t("themes.other_error")
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render json: { errors: [ error ] }, status: :unprocessable_entity
end
end
end
rescue RemoteTheme::ImportError => e
render_json_error e.message
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])
render json: ThemeSerializer.new(@theme)
end
def export
@theme = Theme.find(params[:id])
exporter = ThemeStore::TgzExporter.new(@theme)
file_path = exporter.package_filename
headers['Content-Length'] = File.size(file_path).to_s
send_data File.read(file_path),
filename: File.basename(file_path),
content_type: "application/x-gzip"
ensure
exporter.cleanup!
end
private
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def update_default_theme
if theme_params.key?(:default)
is_default = theme_params[:default].to_s == "true"
if @theme.id == SiteSetting.default_theme_id && !is_default
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Theme.clear_default!
elsif is_default
@theme.set_default!
end
end
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end
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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)
params.require(:theme).permit(
:name,
:color_scheme_id,
:default,
:user_selectable,
:component,
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settings: {},
translations: {},
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theme_fields: [:name, :target, :value, :upload_id, :type_id],
child_theme_ids: []
)
end
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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
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end
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def update_settings
return unless target_settings = theme_params[:settings]
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target_settings.each_pair do |setting_name, new_value|
@theme.update_setting(setting_name.to_sym, new_value)
end
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end
def update_translations
return unless target_translations = theme_params[:translations]
target_translations.each_pair do |translation_key, new_value|
@theme.update_translation(translation_key, new_value)
end
end
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def log_theme_change(old_record, new_record)
StaffActionLogger.new(current_user).log_theme_change(old_record, new_record)
end
def handle_switch
param = theme_params[:component]
if param.to_s == "false" && @theme.component?
@theme.switch_to_theme!
elsif param.to_s == "true" && !@theme.component?
@theme.switch_to_component!
end
end
# Overridden by theme-creator plugin
def theme_user
current_user
end
end