(function () {
  let prevSelectedApp = {name: ''}

  getSelectedApp = name => {
    switch (name) {
      case 'html-documents':
        return appHtmlDocument
      case 'thread':
        return appThread
      case 'file':
        return appFile
      default:
        return null
    }
  }

  //@TODO make a file action.tracimCustomEvent.js that will contains all customEvent that tracim_frontend call

  GLOBAL_renderApp = app => { //@TODO renderAppFull
    console.log('%cGLOBAL_renderApp', 'color: #5cebeb', app)

    const selectedApp = getSelectedApp(app.config.slug)

    if (selectedApp.isRendered) {
      GLOBAL_dispatchEvent({type: `${app.config.slug}_showApp`, data: app}) // handled by html-documents:src/container/HtmlDocument.jsx
    } else {
      selectedApp.renderApp(app)
      selectedApp.isRendered = true
      prevSelectedApp.isRendered = false
      prevSelectedApp = selectedApp
    }
  }

  GLOBAL_renderCreateContentApp = app => { //@TODO renderAppPopupCreation
    console.log('%cGLOBAL_renderCreateContentApp', 'color: #5cebeb', app)

    const selectedApp = getSelectedApp(app.config.slug)

    if (!selectedApp) {
      console.log('Error in GLOBAL_renderCreateContentApp, selectedApp is undefined', app)
      return
    }

    getSelectedApp(app.config.slug).renderPopupCreation(app)
  }

  GLOBAL_dispatchEvent = ({type, data}) => {
    console.log('%cGLOBAL_dispatchEvent', 'color: #fff', type, data)

    const event = new CustomEvent('appCustomEvent', {detail: {type, data}})
    document.dispatchEvent(event)
  }

  GLOBAL_eventReducer = ({detail: {type, data}}) => {
    switch (type) {
      case 'hide_popupCreateContent':
        console.log('%cGLOBAL_eventReducer Custom Event', 'color: #28a745', type, data)
        getSelectedApp(data.name).unmountApp('popupCreateContentContainer')
        break
      case 'unmount_app':
        console.log('%cGLOBAL_eventReducer Custom Event', 'color: #28a745', type, data)
        if (prevSelectedApp.name === '') return

        prevSelectedApp.unmountApp('appContainer')
        prevSelectedApp.unmountApp('popupCreateContentContainer')
        prevSelectedApp.isRendered = false
        break
    }
  }

  document.addEventListener('appCustomEvent', GLOBAL_eventReducer)
})()