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March 11, 2020 18:30
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function buildVibrationPattern(seconds) { | |
return new Array(seconds / 1500) | |
.fill(null) | |
.reduce(prev => [...prev, 0, 1000, 500], []) | |
} | |
const DEFAULT_WAIT_TIME = 30000 | |
const CURRENT_ORDER_STATE = `WAITING_COURIER` | |
const ORDER_STATE = { | |
IN_PROGRESS: `IN_PROGRESS`, | |
WAITING_COURIER: `WAITING_COURIER` | |
} | |
const CURRENT_ORDER_TYPE = `DELIVERY` | |
const ORDER_TYPE = { | |
DELIVERY: `DELIVERY`, | |
HIRED: `HIRED` | |
} | |
Machine( | |
{ | |
id: `courier-state-and-jobs`, | |
initial: `initializing`, | |
context: { | |
fetchKey: 1, | |
online: false, | |
offer: { | |
id: null, | |
receivedAt: null | |
} | |
}, | |
states: { | |
initializing: { | |
on: { | |
'': [ | |
{ | |
cond: `isOffline`, | |
target: `offline` | |
}, | |
{ | |
cond: `isOnline`, | |
target: `online` | |
} | |
] | |
} | |
}, | |
offline: { | |
entry: `setOffline`, | |
on: { | |
GO_ONLINE: `goOnline` | |
} | |
}, | |
goOnline: { | |
invoke: { | |
id: `goOnline`, | |
src: `goOnline`, | |
onDone: `online`, | |
onError: `offline` | |
} | |
}, | |
goOffline: { | |
invoke: { | |
id: `goOffline`, | |
src: `goOffline`, | |
onDone: `offline`, | |
onError: `offline` | |
} | |
}, | |
online: { | |
entry: `setOnline`, | |
initial: `waiting`, | |
on: { | |
GO_OFFLINE: `goOffline` | |
}, | |
states: { | |
waiting: { | |
on: { | |
ORDER_RECEIVED: { | |
actions: `setOffer`, | |
target: `fetchingOrder` | |
} | |
} | |
}, | |
fetchingOrder: { | |
invoke: { | |
id: `fetchOrder`, | |
src: `fetchOrder`, | |
onDone: [ | |
{ | |
cond: `isAssigned`, | |
actions: `incrementFetchKey`, | |
target: `waiting` | |
}, | |
{ | |
cond: `doesNotHaveEnoughTimeToAcceptOrder`, | |
target: `waiting` | |
}, | |
{ | |
cond: `isDeliveryOrder`, | |
target: `offer` | |
}, | |
{ | |
cond: `isHiredOrder`, | |
actions: `incrementFetchKey`, | |
target: `waiting` | |
} | |
], | |
onError: `waiting` | |
} | |
}, | |
offer: { | |
onDone: `waiting`, | |
initial: `waiting`, | |
states: { | |
waiting: { | |
entry: `vibrate`, | |
exit: `cancelVibration`, | |
on: { | |
ACCEPT_JOB: `accepting`, | |
REJECT_JOB: `rejecting` | |
}, | |
after: { | |
ORDER_DELAY: `rejecting` | |
} | |
}, | |
accepting: { | |
invoke: { | |
id: `acceptOrder`, | |
src: `acceptOrder`, | |
onDone: `done`, | |
onError: [ | |
{ | |
target: `done` | |
} | |
] | |
} | |
}, | |
rejecting: { | |
invoke: { | |
id: `rejectOrder`, | |
src: `rejectOrder`, | |
onDone: `done`, | |
onError: [ | |
{ | |
target: `done`, | |
actions: (ctx, event) => { | |
console.log(`ctx: `, ctx) | |
console.log(`event: `, event) | |
} | |
} | |
] | |
} | |
}, | |
done: { | |
entry: `resetOffer`, | |
type: `final` | |
} | |
} | |
} | |
} | |
} | |
} | |
}, | |
{ | |
actions: { | |
setOffline: assign({ | |
online: () => false, | |
}), | |
setOnline: assign({ | |
online: () => true, | |
}), | |
setOfferId: assign({ | |
offer: () => ({ | |
acceptedAt: new Date(), | |
id: 1, | |
receivedAt: new Date(), | |
}), | |
}), | |
resetOffer: assign({ | |
offer: () => ({ | |
acceptedAt: null, | |
id: null, | |
receivedAt: null, | |
}), | |
}), | |
incrementFetchKey: assign({ | |
fetchKey: (ctx) => ctx.fetchKey + 1, | |
}), | |
vibrate: () => { | |
console.log(`vibrate`) | |
}, | |
cancelVibration: () => { | |
console.log(`cancelVibration`) | |
}, | |
}, | |
delays: { | |
ORDER_DELAY: ctx => { | |
if (!ctx.time) { | |
return DEFAULT_WAIT_TIME | |
} | |
return Math.floor(ctx.time + DEFAULT_WAIT_TIME - Date.now()) | |
}, | |
}, | |
guards: { | |
isOffline: ctx => !ctx.online, | |
isOnline: ctx => ctx.online, | |
isAssigned: (ctx, event) => ORDER_STATE.IN_PROGRESS === CURRENT_ORDER_STATE, | |
isDeliveryOrder: (ctx, event) => ORDER_TYPE.DELIVERY === CURRENT_ORDER_TYPE, | |
isHiredOrder: (ctx, event) => ORDER_TYPE.HIRED === CURRENT_ORDER_TYPE, | |
doesNotHaveEnoughTimeToAcceptOrder: ({offer: {receivedAt}}) => { | |
return false | |
} | |
} | |
} | |
) |
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