asyncStorageAdapter.js
1.31 KB
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import * as Gun from 'gun';
import { AsyncStorage } from 'react-native';
const readNode = (key, cb) => {
AsyncStorage.getItem(key || '', cb);
};
const read = (request, db) => {
const { get } = request;
const dedupid = request['#'];
const key = get['#'];
const field = get['.'];
const done = (err, data) => {
if (!data && !err) {
db.on('in', {
'@': dedupid,
put: null,
err: null,
});
} else {
db.on('in', {
'@': dedupid,
put: Gun.graph.node(data),
err,
});
}
};
const acknowledgeRet = (err, result) => {
if (err) {
done(err);
} else if (result === null) {
// Nothing found
done(null);
} else {
const temp = JSON.parse(result);
if (field) {
done(null, temp[field] || null);
} else {
done(null, temp);
}
}
};
readNode(key || '', acknowledgeRet);
};
const write = (request, db) => {
const { put: graph } = request;
const keys = Object.keys(graph);
const dedupid = graph['#'];
const instructions = keys.map((key) => {
return [key, JSON.stringify(graph[key] || {})];
});
AsyncStorage.multiMerge(instructions, (err) => {
db.on('in', {
'#': dedupid,
ok: !err || err.length === 0,
err,
});
});
};
// This returns a promise, it can be awaited!
const reset = () => AsyncStorage.clear();
export default {
read,
write,
reset,
};