module DiscourseNarrativeBot class Base include Actions class InvalidTransitionError < StandardError; end def input(input, user, post: nil, topic_id: nil, skip: false) new_post = nil @post = post @topic_id = topic_id @skip = skip synchronize(user) do @user = user @data = get_data(user) || {} @state = (@data[:state] && @data[:state].to_sym) || :begin @input = input opts = {} begin opts = transition loop do next_state = opts[:next_state] break if next_state == :end next_opts = self.class::TRANSITION_TABLE.fetch(next_state) prerequisite = next_opts[:prerequisite] break if !prerequisite || instance_eval(&prerequisite) [:next_state, :next_instructions].each do |key| opts[key] = next_opts[key] end end rescue InvalidTransitionError # For given input, no transition for current state return end next_state = opts[:next_state] action = opts[:action] if next_instructions = opts[:next_instructions] @next_instructions = next_instructions end begin old_data = @data.dup new_post = (@skip && @state != :end) ? skip_tutorial(next_state) : self.send(action) if new_post old_state = old_data[:state] state_changed = (old_state.to_s != next_state.to_s) clean_up_state(old_state) if state_changed @state = @data[:state] = next_state @data[:last_post_id] = new_post.id set_data(@user, @data) init_state(next_state) if state_changed if next_state == :end end_reply cancel_timeout_job(user) BadgeGranter.grant( Badge.find_by(name: self.class::BADGE_NAME), user ) set_data(@user, topic_id: new_post.topic_id, state: :end, track: self.class.to_s ) end end rescue => e @data = old_data set_data(@user, @data) raise e end end new_post end def reset_bot not_implemented end def set_data(user, value) DiscourseNarrativeBot::Store.set(user.id, value) end def get_data(user) DiscourseNarrativeBot::Store.get(user.id) end def notify_timeout(user) @data = get_data(user) || {} if post = Post.find_by(id: @data[:last_post_id]) reply_to(post, I18n.t("discourse_narrative_bot.timeout.message", i18n_post_args( username: user.username, skip_trigger: TrackSelector.skip_trigger, reset_trigger: "#{TrackSelector.reset_trigger} #{self.class.reset_trigger}" ) ), {}, skip_send_email: false) end end def certificate(type = nil) options = { user_id: @user.id, date: Time.zone.now.strftime('%b %d %Y'), format: :svg } options.merge!(type: type) if type src = Discourse.base_url + DiscourseNarrativeBot::Engine.routes.url_helpers.certificate_path(options) alt = CGI.escapeHTML(I18n.t("#{self.class::I18N_KEY}.certificate.alt")) "#{alt}" end protected def set_state_data(key, value) @data[@state] ||= {} @data[@state][key] = value set_data(@user, @data) end def get_state_data(key) @data[@state] ||= {} @data[@state][key] end def reset_data(user, additional_data = {}) old_data = get_data(user) new_data = additional_data set_data(user, new_data) new_data end def transition options = self.class::TRANSITION_TABLE.fetch(@state).dup input_options = options.fetch(@input) options.merge!(input_options) unless @skip options rescue KeyError raise InvalidTransitionError.new end def skip_tutorial(next_state) return unless valid_topic?(@post.topic_id) fake_delay if next_state != :end reply = reply_to(@post, instance_eval(&@next_instructions)) enqueue_timeout_job(@user) reply else @post end end def i18n_post_args(extra = {}) { base_uri: Discourse.base_uri }.merge(extra) end def valid_topic?(topic_id) topic_id == @data[:topic_id] end def not_implemented raise 'Not implemented.' end private def clean_up_state(state) clean_up_method = "clean_up_#{state}" self.send(clean_up_method) if self.class.private_method_defined?(clean_up_method) end def init_state(state) init_method = "init_#{state}" self.send(init_method) if self.class.private_method_defined?(init_method) end end end