#
#--
# Copyright (c) 2007, John Mettraux, OpenWFE.org
# All rights reserved.
# 
# Redistribution and use in source and binary forms, with or without 
# modification, are permitted provided that the following conditions are met:
# 
# . Redistributions of source code must retain the above copyright notice, this
#   list of conditions and the following disclaimer.  
# 
# . Redistributions in binary form must reproduce the above copyright notice, 
#   this list of conditions and the following disclaimer in the documentation 
#   and/or other materials provided with the distribution.
# 
# . Neither the name of the "OpenWFE" nor the names of its contributors may be
#   used to endorse or promote products derived from this software without
#   specific prior written permission.
# 
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 
# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 
# ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE 
# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 
# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 
# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 
# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 
# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 
# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 
# POSSIBILITY OF SUCH DAMAGE.
#++
#
# $Id: definitions.rb 2725 2006-06-02 13:26:32Z jmettraux $
#

#
# "made in Japan"
#
# John Mettraux at openwfe.org
#

require 'openwfe/flowexpressionid'


module OpenWFE
    
    #
    # Keeping a replayable track of the events in an OpenWFEru engine
    #
    module JournalReplay

        def replay (file_path)

            events = File.open(file_path) do |f|
                s = YAML.load_stream f
                s.documents
            end

            #
            # what to do with Sleep and When ?

            events = events[0..-20]

            participants = {}

            seen = {}
            static = []
            events.reverse.each do |e|

                etype = e[0]
                fei = e[2]

                next if etype == :apply
                next if etype == :reply
                next if etype == :reply_to_parent
                next if seen[fei]

                seen[fei] = true

                next if etype == :remove

                static << e

                participants[fei] = true \
                    if e[3].is_a? OpenWFE::ParticipantExpression
            end

            seen = {}
            dynamic = []
            events.reverse.each do |e|
                etype = e[0]
                fei = e[2]
                next if etype == :update
                next if etype == :remove
                #next if etype == :reply_to_parent
                next if seen[fei]
                next unless participants[fei]
                seen[fei] = true
                dynamic << e
            end

            puts
            puts "static :"
            static.each do |e|
                puts " - #{e[0]}   #{e[2].to_short_s}"
            end

            puts
            puts "participants :"
            participants.each do |fei, v|
                puts " - #{fei.to_short_s}"
            end

            puts
            puts "dynamic :"
            dynamic.each do |e|
                puts " - #{e[0]}   #{e[2].to_short_s}"
            end
        end
    end
end