Generated by XState Viz: https://xstate.js.org/viz

machine.js

  // Available variables:
  // - Machine
  // - interpret
  // - assign
  // - send
  // - sendParent
  // - spawn
  // - raise
  // - actions
  // - XState (all XState exports)

const getCode = (email) => {
  return new Promise((resolve, reject) => {
    setTimeout(() => {
      if (email !== '[email protected]') {
        reject({ code: 3 })
      }
      
      resolve()
    }, 1000)
  })
}

const emailStates = {
  initial: 'noError',
  states: {
    noError: {
      on: {
        INPUT: [
          {
            cond: 'isEmailEmpty',
            target: 'error.empty'
          },
          {
            cond: 'isEmailBadFormat',
            target: 'error.badFormat'
          },
          {
            target: 'noError'
          }
        ],
      }
    },
    error: {
      initial: 'empty',
      states: {
        empty: {},
        badFormat: {},
        noAccount: {},
      },
    },
  }
}

const authServiceStates = {
  initial: 'idle',
  states: {
    idle: {},
    processing: {},
  },
}
  
const loginMachine = Machine({
  id: 'login',
  initial: 'ready',
  context: {
    email: '[email protected]'
  },
  states: {
    ready: {
      type: 'parallel',
      on: {
        SUBMIT: [
          {
            cond: 'isEmailEmpty',
            target: 'ready.email.error.empty'
          },
          {
            cond: 'isEmailBadFormat',
            target: 'ready.email.error.badFormat'
          },
          {
            target: 'awaitingResponse',
          }
        ]
      },
      states: {
        email: { ... emailStates },
        authService: { ...authServiceStates },
      }
    },
    awaitingResponse: {
      on: {
        CANCEL: 'ready'
      },
      invoke: {
        src: 'requestCode',
        onDone: {
          action: 'onSuccess'
        },
        onError: [
          {
            cond: 'isNoAccount',
            target: 'ready.email.error.noAccount'
          }
        ],
      }
    },
  }
}, {
  services: {
    requestCode: (context, evt) => getCode(context.email)
  },
  guards: {
    isEmailEmpty: (context, evt) => context.email === '',
    isEmailBadFormat: (context, evt) => context.email === 'badFormat',
    isNoAccount: (context, evt) => {
      console.log('isNoAccount', evt)
      if (evt.data) {
        return evt.data.code === 3
      } else {
        return true
      }
    }
  },
  actions: {
    cacheEmail: (context, evt) => ({
      email: event.email
    }),
    onSuccess: (c, e) => {
      alert('code!')
    }
  }
});