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| // Available variables: | |
| // - Machine | |
| // - interpret | |
| // - assign | |
| // - send | |
| // - sendParent | |
| // - spawn | |
| // - raise | |
| // - actions | |
| // - XState (all XState exports) | |
| const createTicketQuantityMachine = (max = 19) => Machine({ | |
| context: {count: 0}, | |
| initial: 'idle', | |
| states: { | |
| idle: { | |
| on: { | |
| INCREMENT: { | |
| actions: 'increment', | |
| cond: 'canIncrement' | |
| }, | |
| DECREMENT: { | |
| actions: 'decrement', | |
| cond: 'canDecrement' | |
| } | |
| } | |
| } | |
| }}, { | |
| actions: { | |
| increment: assign({ | |
| count: (context) => context.count + 1 | |
| }), | |
| decrement: assign({ | |
| count: (context) => context.count - 1 | |
| }), | |
| }, | |
| guards: { | |
| canIncrement: (context) => context.count < max, | |
| canDecrement: (context) => context.count > 0, | |
| } | |
| }); | |
| const BuyTicketsMachine = Machine({ | |
| id: 'buyTickets', | |
| initial: 'quantitySelectable', | |
| context: { | |
| adult: 0, | |
| child: 0, | |
| senior: 0 | |
| }, | |
| states: { | |
| quantitySelectable: { | |
| invoke: [ | |
| { | |
| id: 'adult', | |
| src: 'ticketQuantityMachine', | |
| data: {count: ({adult}) => adult}, | |
| onDone: { | |
| actions: assign({ | |
| adult: (context, event) => event.data.count | |
| }) | |
| } | |
| }, | |
| { | |
| id: 'child', | |
| src: 'ticketQuantityMachine', | |
| data: {count: ({child}) => child}, | |
| onDone: { | |
| actions: assign({ | |
| child: (context, event) => event.data.count | |
| }) | |
| } | |
| }, | |
| { | |
| id: 'senior', | |
| src: 'ticketQuantityMachine', | |
| data: {count: ({senior}) => senior}, | |
| onDone: { | |
| actions: assign({ | |
| senior: (context, event) => event.data.count | |
| }) | |
| } | |
| }, | |
| ], | |
| on: { | |
| INCREMENT: { | |
| actions: send('INCREMENT', {to: 'adult'}), | |
| }, | |
| NEXT: { | |
| target: 'dateSelectable', | |
| cond: 'hasQuantity' | |
| } | |
| } | |
| }, | |
| dateSelectable: { | |
| on: { | |
| NEXT: { | |
| target: 'timeSelectable', | |
| cond: 'hasDate' | |
| } | |
| } | |
| }, | |
| timeSelectable: { | |
| on: { | |
| NEXT: { | |
| target: 'billingCollectable', | |
| cond: 'hasTime' | |
| } | |
| } | |
| }, | |
| billingCollectable: { | |
| on: { | |
| NEXT: { | |
| target: 'billable', | |
| cond: 'hasBillingInfo' | |
| } | |
| } | |
| }, | |
| billable: {}, | |
| confirmed: { | |
| type: 'final' | |
| } | |
| } | |
| }, { | |
| guards: { | |
| hasQuantity: ({adult, child, senior}) => | |
| adult || child || senior, | |
| }, | |
| services: { | |
| ticketQuantityMachine: createTicketQuantityMachine | |
| } | |
| }); | |
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