#!/usr/bin/env ruby

require 'optparse'

OPTIONS = {
  :instiki_root => nil,
  :storage => nil,
}

ARGV.options do |opts|
  script_name = File.basename($0)
  opts.banner = "Usage: ruby #{script_name} [options]"

  opts.separator ""

  opts.on("-t", "--storage /full/path/to/storage", String,
          "Full path to your storage, ",
          "such as /home/joe/instiki/storage/2500",
          "It should be the directory that ",
          "contains .snapshot files.") do |storage|
            OPTIONS[:storage] = storage
          end
          
  opts.separator ""

  opts.on("-i", "--instiki /full/path/to/instiki", String,
          "Full path to your Instiki installation, ",
          "such as /home/joe/instiki") do |instiki| 
            OPTIONS[:instiki] = instiki
          end

  opts.separator ""

  opts.on_tail("-h", "--help",
          "Show this help message.") { puts opts; exit }

  opts.parse!
end

if OPTIONS[:instiki].nil? or OPTIONS[:storage].nil?
  $stderr.puts "Please specify full paths to Instiki installation and storage"
  $stderr.puts 
  puts ARGV.options
  exit -1
end

raise "Directory #{OPTIONS[:instiki]} not found" unless File.directory?(OPTIONS[:instiki])
raise "Directory #{OPTIONS[:storage]} not found" unless File.directory?(OPTIONS[:storage])

expected_page_rb_path = File.join(OPTIONS[:instiki], 'app/models/page.rb')
raise "Instiki installation not found in #{OPTIONS[:instiki]}" unless File.file?(expected_page_rb_path)

expected_snapshot_pattern = File.join(OPTIONS[:storage], '*.snapshot')
raise "No snapshots found in OPTIONS[:storage]" if Dir[expected_snapshot_pattern].empty?

INSTIKI_ROOT = File.expand_path(OPTIONS[:instiki])

ADDITIONAL_LOAD_PATHS = %w(
  app/models 
  lib 
  vendor/madeleine-0.7.1/lib
  vendor/RedCloth-3.0.3/lib
  vendor/rubyzip-0.5.8/lib
).map { |dir| "#{File.expand_path(File.join(INSTIKI_ROOT, dir))}"
}.delete_if { |dir| not File.exist?(dir) }

# Prepend to $LOAD_PATH
ADDITIONAL_LOAD_PATHS.reverse.each { |dir| $:.unshift(dir) if File.directory?(dir) }

require 'webrick'
require 'wiki_service'

class Revision
  alias :__display_content :display_content
  def display_content
    return self
  end
end

WikiService.storage_path = OPTIONS[:storage]
wiki = WikiService.instance

wiki.webs.each_pair do |web_name, web|
  # INSERT INTO webs goes here
  puts "Web #{web_name} has #{web.pages.keys.size} pages"
  web.pages.each_pair do |page_name, page|
    # INSERT INTO pages goes here
    puts "  Page #{page_name} has #{page.revisions.size} revisions"
    page.revisions.each_with_index do |rev, i|
      # INSERT INTO revisions goes here
      puts "    Revision #{i} created at #{rev.created_at}"
    end 
  end
end