_ = require 'underscore'
React = require 'react'
TemplateStore = require './template-store'
{Actions, Message, DatabaseStore} = require 'nylas-exports'
{Popover, Menu, RetinaImg} = require 'nylas-component-kit'

class TemplatePicker extends React.Component
  @displayName: 'TemplatePicker'

  @containerStyles:
    order:2

  constructor: (@props) ->
    @state =
      searchValue: ""
      templates: TemplateStore.items()

  componentDidMount: =>
    @unsubscribe = TemplateStore.listen @_onStoreChange

  componentWillUnmount: =>
    @unsubscribe() if @unsubscribe

  render: =>
    button = <button className="btn btn-toolbar">
      <RetinaImg name="toolbar-templates.png"/>
      <RetinaImg name="toolbar-chevron.png"/>
    </button>

    headerComponents = [
      <input type="text"
             tabIndex="1"
             key="textfield"
             className="search"
             value={@state.searchValue}
             onChange={@_onSearchValueChange}/>
    ]

    footerComponents = [
      <div className="item" key="new" onMouseDown={@_onNewTemplate}>Save as Template...</div>
      <div className="item" key="manage" onMouseDown={@_onManageTemplates}>Open Templates Folder...</div>
    ]

    <Popover ref="popover" className="template-picker pull-right" buttonComponent={button}>
      <Menu ref="menu"
            headerComponents={headerComponents}
            footerComponents={footerComponents}
            items={@state.templates}
            itemKey={ (item) -> item.id }
            itemContent={ (item) -> item.name }
            onSelect={@_onChooseTemplate}
            />
    </Popover>


  _filteredTemplates: (search) =>
    search ?= @state.searchValue
    items = TemplateStore.items()

    return items unless search.length

    _.filter items, (t) ->
      t.name.toLowerCase().indexOf(search.toLowerCase()) == 0

  _onStoreChange: =>
    @setState
      templates: @_filteredTemplates()

  _onSearchValueChange: =>
    newSearch = event.target.value
    @setState
      searchValue: newSearch
      templates: @_filteredTemplates(newSearch)

  _onChooseTemplate: (template) =>
    Actions.insertTemplateId({templateId:template.id, draftLocalId: @props.draftLocalId})
    @refs.popover.close()

  _onManageTemplates: =>
    Actions.showTemplates()

  _onNewTemplate: =>
    Actions.createTemplate({draftLocalId: @props.draftLocalId})


module.exports = TemplatePicker