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machine.js

// TODO: this needs to be refactored to a better location
const brandNames = {
  botox: 'BOTOX®',
  juvederm: 'JUVÉDERM®',
  cool_sculpting: 'CoolSculpting® and CoolSculpting® Elite',
  cool_tone: 'CoolTone®',
  diamond_glow: 'DiamondGlow®',
  kybella: 'KYBELLA®',
  latisse: 'LATISSE®',
  natrelle: 'Natrelle®',
  skin_medica: 'SkinMedica®',
};

const ImportantSafetyInformationMachine = Machine(
  {
    id: 'isi-builder',
    initial: 'start',
    context: {
      brands: [''],
      codeIds: [],
    },
    states: {
      start: {
        on: {
          '': [
            { target: 'containsBotox', cond: 'containsBotox' },
            {
              target: 'singleSafetyAndPrescribingInfo',
              cond: 'hasKybellaOrLatisse',
              actions: 'setSingleSafetyInformationOnly',
            },
            {
              target: 'importantSafetyInformationOnly',
              actions: 'setImportantSafetyInformationOnly',
            },
          ],
        },
      },
      containsBotox: {
        on: {
          '': [
            {
              target: 'botoxOnly',
              cond: 'hasOnlyOneCondition',
              actions: 'setBotoxOnly',
            },
            {
              target: 'botoxSafetyAndPrescribingInfo',
              cond: 'hasKybellaOrLatisse',
              actions: ['setBotoxOnly', 'setSafetyAndPrescribingInfo'],
            },
            {
              target: 'botoxOnlyImportantSafetyInformationOnly',
              actions: ['setBotoxOnly', 'setImportantSafetyInformationOnly'],
            },
          ],
        },
      },
      singleSafetyAndPrescribingInfo: {},
      importantSafetyInformationOnly: {},
      doesNotContainBotox: {},
      hasOnlyOneCondition: {},
      botoxOnly: {},
      botoxSafetyAndPrescribingInfo: {},
      botoxOnlyImportantSafetyInformationOnly: {},
    },
  },
  {
    actions: {
      setBotoxOnly: assign({
        codeIds: (context) => {
          return [...context.codeIds, 'BotoxOnly'];
        },
      }),
      setImportantSafetyInformationOnly: assign({
        codeIds: (context) => [
          ...context.codeIds,
          'ImportantSafetyInformationOnly',
        ],
      }),
      setSingleSafetyInformationOnly: assign({
        codeIds: (context) => [
          ...context.codeIds,
          'SingleSafetyAndPrescribingInfo',
        ],
      }),
      setSafetyAndPrescribingInfo: assign({
        codeIds: (context) => {
          return [...context.codeIds, 'SafetyAndPrescribingInfo'];
        },
      }),
    },
    guards: {
      doesNotContainBotox: (context) =>
        !context.brands.includes(brandNames.botox),
      containsBotox: (context) => context.brands.includes(brandNames.botox),
      hasOnlyOneCondition: (context) => context.brands.length === 1,
      hasKybellaOrLatisse: (context) => {
        return context.brands.some(
          (brand) =>
            brand === brandNames.kybella || brand === brandNames.latisse
        );
      },
    },
  }
);