#===============================================================================
# Conversions required to support backwards compatibility with old save files
# (within reason).
#===============================================================================

SaveData.register_conversion(:v21_replace_phone_data) do
  essentials_version 21
  display_title "Updating Phone data format"
  to_value :global_metadata do |global|
    if !global.phone
      global.instance_eval do
        @phone = Phone.new
        @phoneTime = nil   # Don't bother using this
        if @phoneNumbers
          @phoneNumbers.each do |contact|
            if contact.length > 4
              # Trainer
              @phone.add(contact[6], contact[7], contact[1], contact[2], contact[5], 0)
              new_contact = @phone.get(contact[1], contact[2], 0)
              new_contact.visible = contact[0]
              new_contact.rematch_flag = [contact[4] - 1, 0].max
            else
              # Non-trainer
              @phone.add(contact[3], contact[2], contact[1])
            end
          end
          @phoneNumbers = nil
        end
      end
    end
  end
end

#===============================================================================

SaveData.register_conversion(:v21_replace_flute_booleans) do
  essentials_version 21
  display_title "Updating Black/White Flute variables"
  to_value :map_metadata do |metadata|
    metadata.instance_eval do
      if !@blackFluteUsed.nil?
        if Settings::FLUTES_CHANGE_WILD_ENCOUNTER_LEVELS
          @higher_level_wild_pokemon = @blackFluteUsed
        else
          @lower_encounter_rate = @blackFluteUsed
        end
        @blackFluteUsed = nil
      end
      if !@whiteFluteUsed.nil?
        if Settings::FLUTES_CHANGE_WILD_ENCOUNTER_LEVELS
          @lower_level_wild_pokemon = @whiteFluteUsed
        else
          @higher_encounter_rate = @whiteFluteUsed
        end
        @whiteFluteUsed = nil
      end
    end
  end
end

#===============================================================================

SaveData.register_conversion(:v21_add_bump_stat) do
  essentials_version 21
  display_title "Adding a bump stat"
  to_value :stats do |stats|
    stats.instance_eval do
      @bump_count = 0 if !@bump_count
    end
  end
end

#===============================================================================

SaveData.register_conversion(:v22_add_new_stats) do
  essentials_version 22
  display_title "Adding some more stats"
  to_value :stats do |stats|
    stats.instance_eval do
      @wild_battles_fled = 0 if !@wild_battles_fled
      @pokemon_release_count = 0 if !@pokemon_release_count
      @primal_reversion_count = 0 if !@primal_reversion_count
    end
  end
end

#===============================================================================

SaveData.register_conversion(:v22_convert_bag_object) do
  essentials_version 22
  display_title "Converting Bag's pockets"
  to_value :bag do |bag|
    bag.instance_eval do
      all_pockets = GameData::BagPocket.all_pockets
      if @pockets.is_a?(Array)
        new_pockets = {}
        all_pockets.each { |pckt| new_pockets[pckt] = [] }
        @pockets.each_with_index do |value, i|
          next if i == 0
          value.each do |item|
            pckt = GameData::Item.get(item[0]).bag_pocket
            new_pockets[pckt].push(item)
          end
        end
        @pockets = new_pockets
      end
      if @last_viewed_pocket.is_a?(Integer)
        @last_viewed_pocket = all_pockets[@last_viewed_pocket - 1] || all_pockets.first
      end
      if @last_pocket_selections.is_a?(Array)
        new_sels = {}
        all_pockets.each { |pckt| new_sels[pckt] = 0 }
        @last_pocket_selections.each_with_index do |value, i|
          next if i == 0
          pckt = all_pockets[i - 1]
          new_sels[pckt] = value if pckt && value <= @pockets[pckt].length - 1
        end
        @last_pocket_selections = new_sels
      end
    end
  end
end