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import { makeVar } from '@apollo/client/core';
import { RUNNER_TYPENAME } from '../../constants';
import typeDefs from './typedefs.graphql';
/**
* Local state for checkable runner items.
*
* Usage:
*
* ```
* import { createLocalState } from '~/runner/graphql/list/local_state';
*
* // initialize local state
* const { cacheConfig, typeDefs, localMutations } = createLocalState();
*
* // configure the client
* apolloClient = createApolloClient({}, { cacheConfig, typeDefs });
*
* // modify local state
* localMutations.setRunnerChecked( ... )
* ```
*
* @returns {Object} An object to configure an Apollo client:
* contains cacheConfig, typeDefs, localMutations.
*/
export const createLocalState = () => {
const checkedRunnerIdsVar = makeVar({});
const cacheConfig = {
typePolicies: {
Query: {
fields: {
checkedRunnerIds(_, { canRead, toReference }) {
return Object.entries(checkedRunnerIdsVar())
.filter(([id]) => {
// Some runners may be deleted by the user separately.
// Skip dangling references, those not in the cache.
// See: https://www.apollographql.com/docs/react/caching/garbage-collection/#dangling-references
return canRead(toReference({ __typename: RUNNER_TYPENAME, id }));
})
.filter(([, isChecked]) => isChecked)
.map(([id]) => id);
},
},
},
},
};
const localMutations = {
setRunnerChecked({ runner, isChecked }) {
const { id, userPermissions } = runner;
if (userPermissions?.deleteRunner) {
checkedRunnerIdsVar({
...checkedRunnerIdsVar(),
[id]: isChecked,
});
}
},
setRunnersChecked({ runners, isChecked }) {
const newVal = runners
.filter(({ userPermissions }) => userPermissions?.deleteRunner)
.reduce((acc, { id }) => ({ ...acc, [id]: isChecked }), checkedRunnerIdsVar());
checkedRunnerIdsVar(newVal);
},
clearChecked() {
checkedRunnerIdsVar({});
},
};
return {
cacheConfig,
typeDefs,
localMutations,
};
};
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