require 'helix_web_services_client/open_model'
require 'open-uri'

class HelixWebServicesClient
  # List changelists in the system
  #
  # options:
  # - :max - cap the number of results
  # - :status - :pending, :submitted, or :shelved (see Change)
  # - :user - The perforce login to check out
  # - :files - Depot path pattern to restrict changes to
  def changes(options = nil)
    arr = execute_method_no_body(:get, hve_path('changes'), options)
    arr.map { |obj| OpenModel.new(obj) }
  end

  # Returns the Change indicated by the change number or model.
  #
  # If there are files submitted with the change, the change.files field
  # should be filled out.
  def change(change)
    change_id = change.is_a?(OpenModel) ? change.change : change
    arr = execute_method_no_body(:get, hve_path("changes/#{change_id}"))
    OpenModel.new(arr.first)
  end

  # Creates a new changelist, that can be used for a few different tasks.
  #
  # The change should be a hash with the following top-level keys:
  #
  # - `Description`: The change description (optional)
  #
  # - `Files`: An array of Hashes
  #
  # Each hash in the `Files` array can contain these keys:
  #
  # - `DepotFile`: The depot path
  #
  # - `Action`: One of 'upload', 'move', or 'branch'
  #
  # - `FromDepotFile`: if action is 'move' or 'branch', the source file
  #
  # - `Content`: Base64-encoded file content for 'upload' actions
  #
  # - `RequireVersion`: Optional value for 'upload' actions, if set, will
  #                    fail the upload if the current file version is not
  #                    this version.
  #
  # @param change [Hash] See method description
  def create_change(change)
    change = OpenModel.new(change) unless change.is_a?(OpenModel)
    execute_method_with_body(:post, hve_path('changes'), nil, change.marshal_dump)
  end

  # Submits the shelved changelist.
  #
  # This changelist should be pending, with no open files, and list of shelved
  # changes. If you require resolves, this method will fail.
  #
  # @param change [String] The changelist number
  def commit_change(change)
    change_id = change.is_a?(OpenModel) ? change.change : URI.encode(change)
    execute_method_no_body(:post, hve_path("changes/#{change_id}"))
  end
end