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import gql from "graphql-tag";
import { IFieldResolver } from "graphql-tools";
import { ISSUE_PARTS } from "../issues";
import {
IssueParts,
UpdateIssueNameVariables,
} from "../../graphql-types";
import { ResolverContext } from ".";
export const UPDATE_ISSUE_NAME = gql`
mutation UpdateIssueName($input: UpdateIssueNameInput!) {
updateIssueName(input: $input) @client
}
`;
const ISSUE_FRAGMENT = gql`
${ISSUE_PARTS}
fragment IssueParts on Issue {
id @client
name @client
}
`;
/**
* Updates the name of a Github issue.
**/
const updateIssuename: IFieldResolver<
void,
ResolverContext,
any
> = (_obj, args: UpdateIssueNameVariables, context) => {
const { input } = args;
const { cache, getCacheKey } = context;
// 1. Get the id of the object in the cache using the actual issue id
const id = getCacheKey({
__typename: "Issue",
id: input.id,
});
// 2. Get the data from the cache
const issue: IssueParts | null = cache.readFragment({
fragment: ISSUE_FRAGMENT,
fragmentName: "IssueParts",
id,
});
if (!issue) {
return null;
}
// 3. Update the data locally
const updatedIssue = {
...issue,
name: input.name,
};
// 4. Write the data back to the cache
cache.writeFragment({
fragment: ISSUE_FRAGMENT,
fragmentName: "IssueParts",
id,
data: updatedIssue,
});
return null;
};
export default updateIssuename;
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