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autocompleteMachine.js

  // Available variables:
  // - Machine
  // - interpret
  // - assign
  // - send
  // - sendParent
  // - spawn
  // - raise
  // - actions
  // - XState (all XState exports)
const residents = [
  {
    familyName: 'Rhett Skiles',
    houseNumber: '11A',
    streetName: 'Goodwin Green',
    contactPhone: '1101-7810',
    contactEmail: '[email protected]',
    conmuteNumber: '111',
  },
  {
    familyName: 'Velva Koelpin',
    houseNumber: '12A',
    streetName: 'Blick Roads',
    contactPhone: '4198-4999',
    contactEmail: '[email protected]',
    conmuteNumber: '121',
  },
  {
    familyName: 'Idell Mayer',
    houseNumber: '13B',
    streetName: 'Randy Island',
    contactPhone: '7193-5209',
    contactEmail: '[email protected]',
    conmuteNumber: '132',
  },
  {
    familyName: 'Krystina Sipes',
    houseNumber: '14C',
    streetName: 'Jasper Forge',
    contactPhone: '9416-0032',
    contactEmail: '[email protected]',
    conmuteNumber: '143',
  },
  {
    familyName: 'Leilani Ward',
    houseNumber: '21A',
    streetName: 'Mabel Path',
    contactPhone: '0139-0327',
    contactEmail: '[email protected]',
    conmuteNumber: '211',
  },
  {
    familyName: 'Tomasa Glover',
    houseNumber: '22B',
    streetName: 'Herman Views',
    contactPhone: '5811-1680',
    contactEmail: '[email protected]',
    conmuteNumber: '221',
  },
  {
    familyName: 'Bell Heller',
    houseNumber: '23C',
    streetName: 'Estevan Curve',
    contactPhone: '7173-7339',
    contactEmail: '[email protected]',
    conmuteNumber: '233',
  },
  {
    familyName: 'Kelli Cole',
    houseNumber: '31A',
    streetName: 'Gerhold Row',
    contactPhone: '1873-4584',
    contactEmail: '[email protected]',
    conmuteNumber: '311',
  },
  {
    familyName: 'Lillian Orn',
    houseNumber: '32B',
    streetName: 'Kihn Place',
    contactPhone: '3923-5371',
    contactEmail: '[email protected]',
    conmuteNumber: '322',
  },
  {
    familyName: 'Juliana Trantow',
    houseNumber: '33C',
    streetName: 'Donna Valley',
    contactPhone: '3017-9615',
    contactEmail: '[email protected]',
    conmuteNumber: '333',
  },
];
function isEmpty(text) {
  return !Boolean(text);
}

const autocompleteConfig = {
  id: 'autocomplete',
  initial: 'idle',
  context: {
    query: '',
    resident: undefined,
  },
  states: {
    idle: {
      initial: 'waiting',
      states: {
        waiting: {
          on: {
            '': {
              target: '#autocomplete.searching',
              cond: 'isQueryNotEmpty',
            },
          },
        },
        typing: {
          after: {
            500: 'waiting',
          },
        },
      },
      on: {
        SET_QUERY: {
          target: '.typing',
          actions: 'setQuery',
        },
      },
    },
    searching: {
      entry: 'clearErrorMessage',
      invoke: {
        src: 'searchResident',
        onDone: [
          {
            target: '#autocomplete.loaded.empty',
            cond: 'isDataEmpty',
          },
          { target: '#autocomplete.loaded.list' },
        ],
        onError: 'error',
      },
    },
    loaded: {
      entry: 'setResults',
      initial: 'list',
      states: {
        list: {
          on: {
            SELECT_RESIDENT: {
              target: 'selected',
              actions: 'setResident',
            },
          },
        },
        empty: {},
        selected: {},
      },
      on: {
        SET_QUERY: {
          target: '#autocomplete.idle.typing',
          actions: 'setQuery',
        },
      },
    },
    error: {
      entry: 'setErrorMessage',
      on: {
        SET_QUERY: {
          target: '#autocomplete.idle.typing',
          actions: 'setQuery',
        },
      },
    },
  },
};
const autocompleteOptions = {
  actions: {
    setQuery: assign((_, event) => ({
      query: event.query,
    })),
    setResults: assign((_, event) => ({
      results: event.data,
    })),
    setErrorMessage: assign((_, event) => ({
      errorMessage: event.data.message,
    })),
    clearErrorMessage: assign(_ => ({
      errorMessage: undefined,
    })),
    setResident: assign((_, event) => ({
      resident: event.resident,
    })),
  },
  guards: {
    isQueryNotEmpty(context) {
      return !isEmpty(context.query);
    },
    isDataEmpty(_, event) {
      return (
        !Array.isArray(event.data) ||
        (Array.isArray(event.data) && event.data.length < 1)
      );
    },
  },
  services: {
    searchResident({ query }) {
      return new Promise((resolve, rejects) => {
        const ilike = new RegExp(query, 'ig');
        const results = residents.filter(
          resident =>
            ilike.test(resident.familyName) || ilike.test(resident.houseNumber),
        );

        setTimeout(() => {
          if (/[^a-zA-Z0-9]/g.test(query)) {
            rejects(new Error('This is an error'));
          } else {
            resolve(results);
          }
        }, 2e3);
      });
    },
  },
};
const autocompleteMachine = Machine(autocompleteConfig, autocompleteOptions);