// Available variables:
  // - Machine
  // - interpret
  // - assign
  // - send
  // - sendParent
  // - spawn
  // - raise
  // - actions
  // - XState (all XState exports)
  
  const importMachine = Machine({
  id: 'questionImport',
  context: {},
  initial: 'select-file',
  states: {
    'select-file': {
      // Shows the file select / drag & drop screen (FRAME 1, FRAME 15)
      on: {
        FILE_SELECTED: 'confirm-file'
      }
    },
    'confirm-file': {
      // Necessary? Shows the filename with a load button (FRAME 3)
      on: {
        CONFIRM: 'parsing'
      }
    },
    parsing: {
      // Shows "Validating headers..."/"Headers look great!" AND "Validating rows..." etc (FRAME 4, FRAME 5, FRAME 6)
      on: {
        VALID: 'preview',
        INVALID: 'errored'
      },
      entry: ['startParse']
    },
    preview: {
      // Shows "Headers look great!" AND "Rows look great!" AND summary that should say "You loaded X questions" (FRAME 7)
      on: {
        UPLOAD: 'uploading',
        RESTART: 'select-file'
      }
    },
    uploading: {
      on: {
        SUCCESS: 'done',
        FAIL: 'errored'
      },
      entry: ['startUpload']
    },
    errored: {
      on: {
        RESTART: 'select-file'
      }
    },
    done: {}
  }
});