filename_input = 'input#repository_file_target_filename'

remote_file_input = 'input#repository_file_remote_file_iri'

current_filename = null

jQuery ->

form_hooks()

remote_iri_hook()

reverse_locality = (locality) ->

if locality == 'remote'

'local'

else if locality == 'local'

'remote'

valid_locality = (locality) ->

not not reverse_locality(locality)

determine_filetype = (iri, callback) ->

payload = iri: iri

$.post "/filetypes/", payload, callback, 'json'

determine_filename = (callback) ->

iri = $(remote_file_input).val()

if iri.length

result = iri.match(/\/([^/]+)(\?.*)?$/)

callback(result[1], iri) if result

has_fileextension = (filename) ->

filename.split('.').length > 1

eligible_for_filename_suggestion = ->

$(filename_input).val().length == 0 or

current_filename == $(filename_input).val()

form_hooks = ->

return unless $('form#new_repository_file')

$('input[name="repository_file[file_upload_type]"]:radio').on 'click', (e) ->

type = $(this).val()

if valid_locality type

$("#group-file_upload_#{type}").show()

$("#group-file_upload_#{reverse_locality type}").hide()

remote_iri_hook = ->

$(remote_file_input).on 'keyup', (e) ->

determine_filename (filename, iri) ->

if not has_fileextension(filename) and eligible_for_filename_suggestion()

determine_filetype iri, (filetype) ->

suggested_filename = "#{filename}#{filetype.extension}"

$(filename_input).val(suggested_filename)

current_filename = suggested_filename