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import {MMKV} from 'react-native-mmkv'
import {Device} from '#/storage/schema'
export * from '#/storage/schema'
/**
* Generic storage class. DO NOT use this directly. Instead, use the exported
* storage instances below.
*/
export class Storage<Scopes extends unknown[], Schema> {
protected sep = ':'
protected store: MMKV
constructor({id}: {id: string}) {
this.store = new MMKV({id})
}
/**
* Store a value in storage based on scopes and/or keys
*
* `set([key], value)`
* `set([scope, key], value)`
*/
set<Key extends keyof Schema>(
scopes: [...Scopes, Key],
data: Schema[Key],
): void {
// stored as `{ data: <value> }` structure to ease stringification
this.store.set(scopes.join(this.sep), JSON.stringify({data}))
}
/**
* Get a value from storage based on scopes and/or keys
*
* `get([key])`
* `get([scope, key])`
*/
get<Key extends keyof Schema>(
scopes: [...Scopes, Key],
): Schema[Key] | undefined {
const res = this.store.getString(scopes.join(this.sep))
if (!res) return undefined
// parsed from storage structure `{ data: <value> }`
return JSON.parse(res).data
}
/**
* Remove a value from storage based on scopes and/or keys
*
* `remove([key])`
* `remove([scope, key])`
*/
remove<Key extends keyof Schema>(scopes: [...Scopes, Key]) {
this.store.delete(scopes.join(this.sep))
}
/**
* Remove many values from the same storage scope by keys
*
* `removeMany([], [key])`
* `removeMany([scope], [key])`
*/
removeMany<Key extends keyof Schema>(scopes: [...Scopes], keys: Key[]) {
keys.forEach(key => this.remove([...scopes, key]))
}
}
/**
* Device data that's specific to the device and does not vary based on account
*
* `device.set([key], true)`
*/
export const device = new Storage<[], Device>({id: 'device'})
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