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July 11, 2023 12:36
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Small zustand + immer POC
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import { Button, Center, Stack } from '@mantine/core'; | |
import { Dashboard, Widgets, useDashboardStore } from '~/tools/useDashboard'; | |
export default function HomePage() { | |
const { setCurrentDashboard, currentDashboard, addDashboard } = useDashboardStore( | |
(state) => state | |
); | |
return ( | |
<> | |
<Center> | |
<Stack p={200}> | |
Current dashboard : {currentDashboard?.name || 'none'} | |
<Button | |
onClick={() => { | |
const newDashboard: Dashboard = { | |
id: 1, | |
name: 'Dashboard 1', | |
widgets: new Widgets([]), | |
}; | |
addDashboard(newDashboard); | |
setCurrentDashboard(newDashboard); | |
console.log('Widget with the longest name', currentDashboard?.widgets.getLongestName); | |
}} | |
> | |
Set dashboard | |
</Button> | |
Widget with the longest name : {currentDashboard?.widgets.getLongestName().name || 'none'} | |
</Stack> | |
</Center> | |
</> | |
); | |
} |
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import { create } from 'zustand'; | |
import { immer } from 'zustand/middleware/immer'; | |
type Widget = { | |
id: number; | |
name: string; | |
}; | |
export class Widgets { | |
widgets: Widget[]; | |
constructor(widgets: Widget[]) { | |
this.widgets = widgets; | |
} | |
// Function to get the widget with the longest name | |
getLongestName() { | |
return this.widgets.reduce((acc, widget) => { | |
if (widget.name.length > acc.name.length) { | |
return widget; | |
} | |
return acc; | |
}); | |
} | |
} | |
export type Dashboard = { | |
id: number; | |
name: string; | |
widgets: Widgets; | |
}; | |
type DashboardManager = { | |
dashboards: Dashboard[]; | |
currentDashboard: Dashboard | undefined; | |
addDashboard(dashboard: Dashboard): void; | |
removeDashboard(id: number): void; | |
setCurrentDashboard(dashboard: Dashboard): void; | |
}; | |
export const useDashboardStore = create( | |
immer<DashboardManager>((set) => ({ | |
currentDashboard: undefined, | |
dashboards: [], | |
setCurrentDashboard(dashboard: Dashboard) { | |
set((state) => { | |
state.currentDashboard = dashboard; | |
}); | |
}, | |
addDashboard(dashboard: Dashboard) { | |
set((state) => { | |
state.dashboards.push(dashboard); | |
}); | |
}, | |
removeDashboard(id: number) { | |
set((state) => { | |
state.dashboards = state.dashboards.filter((dashboard) => dashboard.id !== id); | |
}); | |
}, | |
})) | |
); |
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