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// Available variables: | |
// - Machine | |
// - interpret | |
// - assign | |
// - send | |
// - sendParent | |
// - spawn | |
// - raise | |
// - actions | |
// - XState (all XState exports) | |
const paymentAuthorizationMachine = Machine({ | |
id: 'paymentAuthorization', | |
initial: 'checkPrerequisites', | |
// we will track payment authorization details in the machine's context | |
context: { | |
paymentAuthorizationId: null, | |
expiresOn: null, | |
// ...more fields | |
}, | |
states: { | |
checkPrerequisites: { | |
invoke: { | |
id: 'checkPrerequistes', | |
src: 'checkPrerequisites', | |
onDone: { | |
target: 'fetchingPaymentDetails', | |
}, | |
onError: { | |
target: 'prerequisitesNotMet', | |
}, | |
}, | |
}, | |
fetchingPaymentDetails: { | |
invoke: { | |
id: 'fetchPaymentDetails', | |
src: 'fetchPaymentDetails', | |
onDone: { | |
target: 'paymentDetailsFetched', | |
actions: assign((ctx, event) => { | |
return event.data; | |
}), | |
}, | |
onError: { | |
target: 'paymentDetailsError', | |
}, | |
}, | |
}, | |
paymentDetailsFetched: { | |
after: { | |
AUTHORIZATION_EXPIRES: { | |
target: 'authorizationExpired', | |
}, | |
}, | |
on: { | |
DISMISS: 'authorizationDismissed', | |
KEYCHAIN_ACCESS_OK: 'authorizingPayment', | |
KEYCHAIN_ACCESS_KO: 'biometricFactorError', | |
}, | |
}, | |
authorizingPayment: { | |
invoke: { | |
id: 'authorizePayment', | |
src: 'authorizePayment', | |
onDone: { | |
target: 'paymentAuthorized', | |
}, | |
onError: { | |
target: 'authorizationError', | |
}, | |
}, | |
}, | |
paymentAuthorized: { type: 'final' }, | |
authorizationDismissed: { type: 'final' }, | |
paymentDetailsError: { type: 'final' }, | |
prerequisitesNotMet: { type: 'final' }, | |
authorizationExpired: { type: 'final' }, | |
authorizationError: { type: 'final' }, | |
biometricFactorError: { type: 'final' }, | |
}, | |
}, { | |
services: { | |
checkPrerequisites: () => Promise.resolve(), | |
fetchPaymentDetails: () => Promise.resolve({ | |
paymentAuthorizationId: 123, | |
// the payment authorization expires 15 seconds after being received | |
expiresOn: new Date(Date.now() + 15000) | |
}), | |
authorizePayment: () => Promise.resolve(), | |
}, | |
delays: { | |
AUTHORIZATION_EXPIRES: (ctx) => { | |
return Math.max(ctx.expiresOn - new Date(), 0); | |
}, | |
}, | |
}); | |
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