# Copyright (c) 2010, Diaspora Inc.  This file is
# licensed under the Affero General Public License version 3 or later.  See
# the COPYRIGHT file.

require File.join(Rails.root, 'lib', 'data_conversion', 'base')
require File.join(Rails.root, 'lib', 'data_conversion', 'export_from_mongo')
require File.join(Rails.root, 'lib', 'data_conversion', 'import_to_mysql')

namespace :migrations do
  desc 'export data for mysql import'
  task :export_for_mysql do
    migrator = DataConversion::ExportFromMongo.new
    migrator.full_path = "/tmp/data_conversion"
    migrator.log("**** Starting export for MySQL ****")
    migrator.clear_dir
    migrator.write_json_export
    migrator.convert_json_files
    migrator.log("**** Export finished! ****")
    migrator.log("total elapsed time")
  end

  desc 'import data to mysql'
  task :import_to_mysql do
    require 'config/environment'
    migrator = DataConversion::ImportToMysql.new
    migrator.full_path = "/tmp/data_conversion/csv"
    migrator.log("**** Starting import to MySQL database #{ActiveRecord::Base.connection.current_database} ****")
    migrator.import_raw
    migrator.process_raw_tables
    migrator.log("**** Import finished! ****")
    migrator.log("total elapsed time")
  end

  desc 'execute mongo to mysql migration.  Requires mongoexport to be accessible.'
  task :migrate_to_mysql => [:export_for_mysql, :import_to_mysql]

  desc 'absolutify all existing image references'
  task :absolutify_image_references do
    require File.join(Rails.root,"config/environment")

    Photo.all.each do |photo|
      # extract root
      unless photo.image.url.match(/^https?:\/\//)

        pod_url = photo.person.url
        pod_url.chop! if pod_url[-1,1] == '/'
        remote_path = "#{pod_url}#{photo.image.url}"
      else
        remote_path = photo.image.url
      end

      # get path/filename
      name_start = remote_path.rindex '/'
      photo.remote_photo_path = "#{remote_path.slice(0, name_start)}/"
      photo.remote_photo_name = remote_path.slice(name_start + 1, remote_path.length)

      photo.save!
    end
  end
end