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Generated by XState Viz: https://xstate.js.org/viz
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// https://xstate.js.org/viz/?gist=5fe14e8b6f72489354c0dee1834cf5ce | |
// Available variables: | |
// - Machine | |
// - interpret | |
// - assign | |
// - send | |
// - sendParent | |
// - spawn | |
// - raise | |
// - actions | |
// - XState (all XState exports) | |
const scheduleRequest = request => ctx => { | |
return [...ctx.networkQueue, Promise.resolve(request)] | |
} | |
const pullStep = (entity, nextEntity, parallel) => { | |
return { | |
on: { | |
PULL_NEXT: nextEntity | |
}, | |
initial: 'pulling', | |
states: { | |
pulling: { | |
entry: [ | |
assign({ | |
networkQueue: scheduleRequest(entity) | |
}), | |
parallel ? send('PULL_NEXT') : send('FETCH_ENTITIES') | |
] | |
} | |
} | |
} | |
} | |
const networkStates = { | |
initial: 'ready', | |
states: { | |
ready: { | |
on: { | |
FETCH_ENTITIES: 'fetching' | |
} | |
}, | |
fetching: { | |
invoke: { | |
src: 'pullRemoteData', | |
onDone: { | |
target: 'ready', | |
actions: [ | |
assign({ | |
networkQueue: ctx => [], | |
pullResults: (ctx, event) => { | |
return [...ctx.pullResults, event.data] | |
} | |
}), | |
send('PULL_NEXT') | |
] | |
}, | |
onError: { | |
target: 'ready', | |
actions: [sendParent('SYNC_FAILURE')] | |
} | |
} | |
} | |
} | |
} | |
const pullingOrderStates = { | |
initial: 'settings', | |
states: { | |
settings: pullStep('settings', 'capabilities', true), | |
capabilities: pullStep('capabilities', 'listGroups'), | |
listGroups: pullStep('listGroups', 'lists'), | |
lists: pullStep('lists', 'tasks'), | |
tasks: pullStep('tasks', 'members', true), | |
members: pullStep('members', 'taskSuggestions'), | |
taskSuggestions: pullStep('taskSuggestions', 'finished'), | |
finished: { | |
entry: [send('DONE')], | |
type: 'final', | |
} | |
} | |
} | |
const pullingQueue = Machine( | |
{ | |
id: 'pullingQueue', | |
initial: 'working', | |
context: { | |
networkQueue: [], | |
pullResults: [] | |
}, | |
states: { | |
working: { | |
on: { | |
DONE: 'done' | |
}, | |
type: 'parallel', | |
states: { | |
pullingOrder: pullingOrderStates, | |
network: networkStates | |
} | |
}, | |
done: { | |
type: 'final', | |
data: { | |
results: ctx => ctx.pullResults | |
} | |
} | |
} | |
}, | |
{ | |
services: { | |
pullRemoteData: ctx => { | |
const tasks = ctx.networkQueue | |
return Promise.all(tasks) | |
} | |
} | |
} | |
) |
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