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addStudentMachine.js

  // Available variables:
  // - Machine
  // - interpret
  // - assign
  // - send
  // - sendParent
  // - spawn
  // - raise
  // - actions
  // - XState (all XState exports)
  
  const addStudentMachine = Machine({
    id: 'addStudent',
    initial: 'initial',
    context: {
      retries: 0
    },
    states: {
      initial: {
        on: {
          USI_ENTERED: 'findUSIMatch',
          DOB_ENTERED: 'findFuzzyMatch'
        }
      },
      findUSIMatch: {
        on: {
          USI_MATCH_FOUND: 'confirmAddExistingStudent',
          USI_MATCH_NOT_FOUND: 'notifyUSIMatchNotFound'
        }
      },
      notifyUSIMatchNotFound: {
        on: {
          OK: 'initial'
        }
      },
      findFuzzyMatch: {
        on: {
          FUZZY_MATCH_FOUND: 'presentFuzzyMatch',
          FUZZY_MATCH_NOT_FOUND: 'notifyNoFuzzyMatchFound'
        }
      },
      presentFuzzyMatch: {
        on: {
          REJECT_SUGGESTIONS: 'addNewOrTryAgain',
          SELECT_STUDENT:
            'confirmAddExistingStudent'
        }
      },
      addNewOrTryAgain: {
        on: {
          ADD_NEW: 'newStudent',
          TRY_AGAIN: 'initial'
        }
      },
      notifyNoFuzzyMatchFound: {
        on: {
          OK: 'addNewOrTryAgain'
        }
      },
      confirmAddExistingStudent: {
        type: 'final'
      },
      newStudent: {
        type: 'final'
      },
      failure: {
        type: 'final'
      },
      dismissed: {
        type: 'final'
      }
    },
    on: {
      CANCEL: 'initial',
      CLOSE: 'dismissed',
      ERROR: 'failure'
    }
  });