discourse/app/models/remote_theme.rb

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# frozen_string_literal: true
class RemoteTheme < ActiveRecord::Base
METADATA_PROPERTIES = %i{
license_url
about_url
authors
theme_version
minimum_discourse_version
maximum_discourse_version
}
class ImportError < StandardError; end
ALLOWED_FIELDS = %w{scss embedded_scss head_tag header after_header body_tag footer}
GITHUB_REGEXP = /^https?:\/\/github\.com\//
GITHUB_SSH_REGEXP = /^git@github\.com:/
has_one :theme, autosave: false
scope :joined_remotes, -> {
joins("JOIN themes ON themes.remote_theme_id = remote_themes.id").where.not(remote_url: "")
}
validates_format_of :minimum_discourse_version, :maximum_discourse_version, with: Discourse::VERSION_REGEXP, allow_nil: true
def self.extract_theme_info(importer)
JSON.parse(importer["about.json"])
rescue TypeError, JSON::ParserError
raise ImportError.new I18n.t("themes.import_error.about_json")
end
def self.update_zipped_theme(filename, original_filename, match_theme: false, user: Discourse.system_user, theme_id: nil)
importer = ThemeStore::ZipImporter.new(filename, original_filename)
importer.import!
theme_info = RemoteTheme.extract_theme_info(importer)
theme = Theme.find_by(name: theme_info["name"]) if match_theme # Old theme CLI method, remove Jan 2020
theme = Theme.find_by(id: theme_id) if theme_id # New theme CLI method
theme ||= Theme.new(user_id: user&.id || -1, name: theme_info["name"])
theme.component = theme_info["component"].to_s == "true"
remote_theme = new
remote_theme.theme = theme
remote_theme.remote_url = ""
remote_theme.update_from_remote(importer, skip_update: true)
theme.save!
theme
ensure
begin
importer.cleanup!
rescue => e
Rails.logger.warn("Failed cleanup remote path #{e}")
end
end
def self.import_theme(url, user = Discourse.system_user, private_key: nil, branch: nil)
importer = ThemeStore::GitImporter.new(url.strip, private_key: private_key, branch: branch)
importer.import!
theme_info = RemoteTheme.extract_theme_info(importer)
component = [true, "true"].include?(theme_info["component"])
theme = Theme.new(user_id: user&.id || -1, name: theme_info["name"], component: component)
remote_theme = new
theme.remote_theme = remote_theme
remote_theme.private_key = private_key
remote_theme.branch = branch
remote_theme.remote_url = importer.url
remote_theme.update_from_remote(importer)
theme.save!
theme
ensure
begin
importer.cleanup!
rescue => e
Rails.logger.warn("Failed cleanup remote git #{e}")
end
end
def self.out_of_date_themes
self.joined_remotes.where("commits_behind > 0 OR remote_version <> local_version")
.pluck("themes.name", "themes.id")
end
def self.unreachable_themes
self.joined_remotes.where("last_error_text IS NOT NULL").pluck("themes.name", "themes.id")
end
def update_remote_version
return unless is_git?
importer = ThemeStore::GitImporter.new(remote_url, private_key: private_key, branch: branch)
begin
importer.import!
rescue RemoteTheme::ImportError => err
self.last_error_text = err.message
else
self.updated_at = Time.zone.now
self.remote_version, self.commits_behind = importer.commits_since(local_version)
self.last_error_text = nil
ensure
self.save!
end
end
def update_from_remote(importer = nil, skip_update: false)
cleanup = false
unless importer
cleanup = true
importer = ThemeStore::GitImporter.new(remote_url, private_key: private_key, branch: branch)
begin
importer.import!
rescue RemoteTheme::ImportError => err
self.last_error_text = err.message
self.save!
return self
else
self.last_error_text = nil
end
end
theme_info = RemoteTheme.extract_theme_info(importer)
updated_fields = []
theme_info["assets"]&.each do |name, relative_path|
if path = importer.real_path(relative_path)
new_path = "#{File.dirname(path)}/#{SecureRandom.hex}#{File.extname(path)}"
File.rename(path, new_path) # OptimizedImage has strict file name restrictions, so rename temporarily
upload = UploadCreator.new(File.open(new_path), File.basename(relative_path), for_theme: true).create_for(theme.user_id)
updated_fields << theme.set_field(target: :common, name: name, type: :theme_upload_var, upload_id: upload.id)
end
end
METADATA_PROPERTIES.each do |property|
self.public_send(:"#{property}=", theme_info[property.to_s])
end
if !self.valid?
raise ImportError, I18n.t("themes.import_error.about_json_values", errors: self.errors.full_messages.join(","))
end
importer.all_files.each do |filename|
next unless opts = ThemeField.opts_from_file_path(filename)
value = importer[filename]
updated_fields << theme.set_field(**opts.merge(value: value))
end
# Destroy fields that no longer exist in the remote theme
field_ids_to_destroy = theme.theme_fields.pluck(:id) - updated_fields.map { |tf| tf&.id }
ThemeField.where(id: field_ids_to_destroy).destroy_all
if !skip_update
self.remote_updated_at = Time.zone.now
self.remote_version = importer.version
self.local_version = importer.version
self.commits_behind = 0
end
update_theme_color_schemes(theme, theme_info["color_schemes"]) unless theme.component
self.save!
self
ensure
begin
importer.cleanup! if cleanup
rescue => e
Rails.logger.warn("Failed cleanup remote git #{e}")
end
end
def diff_local_changes
return unless is_git?
importer = ThemeStore::GitImporter.new(remote_url, private_key: private_key, branch: branch)
begin
importer.import!
rescue RemoteTheme::ImportError => err
{ error: err.message }
else
changes = importer.diff_local_changes(self.id)
return nil if changes.blank?
{ diff: changes }
end
end
def normalize_override(hex)
return unless hex
override = hex.downcase
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if override !~ /\A[0-9a-f]{6}\z/
override = nil
end
override
end
def update_theme_color_schemes(theme, schemes)
missing_scheme_names = Hash[*theme.color_schemes.pluck(:name, :id).flatten]
ordered_schemes = []
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schemes&.each do |name, colors|
missing_scheme_names.delete(name)
scheme = theme.color_schemes.find_by(name: name) || theme.color_schemes.build(name: name)
# Update main colors
ColorScheme.base.colors_hashes.each do |color|
override = normalize_override(colors[color[:name]])
color_scheme_color = scheme.color_scheme_colors.to_a.find { |c| c.name == color[:name] } ||
scheme.color_scheme_colors.build(name: color[:name])
color_scheme_color.hex = override || color[:hex]
theme.notify_color_change(color_scheme_color) if color_scheme_color.hex_changed?
end
# Update advanced colors
ColorScheme.color_transformation_variables.each do |variable_name|
override = normalize_override(colors[variable_name])
color_scheme_color = scheme.color_scheme_colors.to_a.find { |c| c.name == variable_name }
if override
color_scheme_color ||= scheme.color_scheme_colors.build(name: variable_name)
color_scheme_color.hex = override
theme.notify_color_change(color_scheme_color) if color_scheme_color.hex_changed?
elsif color_scheme_color # No longer specified in about.json, delete record
scheme.color_scheme_colors.delete(color_scheme_color)
theme.notify_color_change(nil, scheme: scheme)
end
end
ordered_schemes << scheme
end
if missing_scheme_names.length > 0
ColorScheme.where(id: missing_scheme_names.values).delete_all
# we may have stuff pointed at the incorrect scheme?
end
if theme.new_record?
theme.color_scheme = ordered_schemes.first
end
end
def github_diff_link
if github_repo_url.present? && local_version != remote_version
"#{github_repo_url.gsub(/\.git$/, "")}/compare/#{local_version}...#{remote_version}"
end
end
def github_repo_url
url = remote_url.strip
return url if url.match?(GITHUB_REGEXP)
if url.match?(GITHUB_SSH_REGEXP)
org_repo = url.gsub(GITHUB_SSH_REGEXP, "")
"https://github.com/#{org_repo}"
end
end
def is_git?
remote_url.present?
end
end
# == Schema Information
#
# Table name: remote_themes
#
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# id :integer not null, primary key
# remote_url :string not null
# remote_version :string
# local_version :string
# about_url :string
# license_url :string
# commits_behind :integer
# remote_updated_at :datetime
# created_at :datetime not null
# updated_at :datetime not null
# private_key :text
# branch :string
# last_error_text :text
# authors :string
# theme_version :string
# minimum_discourse_version :string
# maximum_discourse_version :string
#