Luca.components.FormView = Luca.core.Container.extend
  tagName: 'form'

  className: 'luca-ui-form-view'

  hooks:[
    "before:submit"
    "before:reset"
    "before:load"
    "before:load:new"
    "before:load:existing"
    "after:submit"
    "after:reset"
    "after:load"
    "after:load:new"
    "after:load:existing"
    "after:submit:success"
    "after:submit:fatal_error"
    "after:submit:error"
  ]

  events:
    "click .submit-button" : "submitHandler"
    "click .reset-button" : "resetHandler"

  toolbar: true

  initialize: (@options={})->
    Luca.core.Container::initialize.apply @, arguments

    _.bindAll @, "submitHandler", "resetHandler", "renderToolbars"

    @state ||= new Backbone.Model

    @setupHooks( @hooks )

    @legend ||= ""

    @configureToolbars()
    @applyStyles()

  addBootstrapFormControls: ()->
    @bind "after:render", ()=>
      el = @$('.toolbar-container.bottom')

      el.addClass('form-controls')
      el.html @formControlsTemplate || Luca.templates["components/bootstrap_form_controls"](@)

  applyStyles: ()->
    @applyBootstrapStyles() if Luca.enableBootstrap

    @$el.addClass( "label-align-#{ @labelAlign }") if @labelAlign
    @$el.addClass( @fieldLayoutClass ) if @fieldLayoutClass

  applyBootstrapStyles: ()->
    @inlineForm = true if @labelAlign is "left"

    @$el.addClass('well') if @well
    @$el.addClass('form-search') if @searchForm
    @$el.addClass('form-horizontal') if @horizontalForm
    @$el.addClass('form-inline') if @inlineForm

  configureToolbars: ()->
    return @addBootstrapFormControls() if Luca.enableBootstrap and @toolbar is true

    if @toolbar is true
      @toolbars = [
        ctype: 'form_button_toolbar'
        includeReset: true
        position: 'bottom'
      ]

    if @toolbars and @toolbars.length
      @bind "after:render", _.once @renderToolbars

  resetHandler: (e)->
    me = my = $( e.currentTarget )
    @trigger "before:reset", @
    @reset()
    @trigger "after:reset", @

  submitHandler: (e)->
    me = my = $( e.currentTarget )
    @trigger "before:submit", @
    @submit()

  beforeLayout: ()->
    Luca.core.Container::beforeLayout?.apply @, arguments
    @$el.html Luca.templates["components/form_view"]( @ )

  prepareComponents: ()->
    container = $('.form-view-body', @el)
    _( @components ).each (component)->
      component.container = container

  render: ()->
    $( @container ).append( @$el )

  wrapper: ()->
    @$el.parents('.luca-ui-form-view-wrapper')

  toolbarContainers: (position="bottom")->
    $(".toolbar-container.#{ position }", @wrapper() ).first()

  renderToolbars: ()->
      _( @toolbars ).each (toolbar)=>
        toolbar.container = $("##{ @cid }-#{ toolbar.position }-toolbar-container")
        toolbar = Luca.util.lazyComponent(toolbar)
        toolbar.render()

  getField: (name)->
    _( @getFields('name', name) ).first()

  getFields: (attr,value)->
    # do a deep search of all of the nested components
    # to find the fields
    fields = @select("isField", true, true)

    # if an optional attribute and value pair is passed
    # then you can limit the array of fields even further
    if fields.length > 0 and attr and value
      fields = _(fields).select (field)->
        property = field[ attr ]
        return false unless property?
        propvalue = if _.isFunction(property) then property() else property
        value is propvalue

    fields

  loadModel: (@current_model)->
    form = @
    fields = @getFields()

    @trigger "before:load", @, @current_model

    if @current_model
      @current_model.beforeFormLoad?.apply(@current_model, @)

      event = "before:load:#{ (if @current_model.isNew() then "new" else "existing")}"
      @trigger event, @, @current_model

    @setValues(@current_model)

    @trigger "after:load", @, @current_model

    if @current_model
      @trigger "after:load:#{ (if @current_model.isNew() then "new" else "existing")}", @, @current_model

  reset: ()->
    @loadModel( @current_model )

  clear: ()->
    @current_model = if @defaultModel? then @defaultModel() else undefined

    _( @getFields() ).each (field)=>
      try
        field.setValue('')
      catch e
        console.log "Error Clearing", @, field

  # set the values on the form
  # without syncing
  setValues: (source, options={})->
    source ||= @currentModel()
    fields = @getFields()

    _( fields ).each (field) =>
      field_name = field.input_name || field.name

      if value = source[field_name]
        if _.isFunction(value)
          value = value.apply(@)

      if !value and Luca.isBackboneModel(source)
        value = source.get(field_name)

      field?.setValue( value ) unless field.readOnly is true

    @syncFormWithModel() unless options.silent? is true

  getValues: (options)->
    options ||= {}

    options.reject_blank = true unless options.reject_blank?
    options.skip_buttons = true unless options.skip_buttons?

    _( @getFields() ).inject (memo,field)->
      value = field.getValue()
      key = field.input_name || field.name

      skip = false
      skip = true if options.skip_buttons and field.ctype is "button_field"
      skip = true if options.reject_blank is true and _.isBlank(value)
      skip = true if field.input_name is "id" and _.isBlank(value)

      memo[ key ] = value unless skip is true

      memo
    , {}

  submit_success_handler: (model, response, xhr)->
    @trigger "after:submit", @, model, response

    if response and response?.success is true
      @trigger "after:submit:success", @, model, response
    else
      @trigger "after:submit:error", @, model, response

  submit_fatal_error_handler: (model, response, xhr)->
    @trigger "after:submit", @, model, response
    @trigger "after:submit:fatal_error", @, model, response

  submit: (save=true, saveOptions={})->
    _.bindAll @, "submit_success_handler", "submit_fatal_error_handler"

    saveOptions.success ||= @submit_success_handler
    saveOptions.error ||= @submit_fatal_error_handler

    @syncFormWithModel()
    return unless save
    @current_model.save( @current_model.toJSON(), saveOptions )

  currentModel: (options={})->
    if options is true or options?.refresh is true
      @syncFormWithModel()

    @current_model

  syncFormWithModel: ()->
    @current_model?.set( @getValues() )

  setLegend: (@legend)->
    $('fieldset legend', @el).first().html(@legend)

Luca.register 'form_view', 'Luca.components.FormView'