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-rw-r--r--frontend/src/gql/Utils.ts74
1 files changed, 74 insertions, 0 deletions
diff --git a/frontend/src/gql/Utils.ts b/frontend/src/gql/Utils.ts
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--- /dev/null
+++ b/frontend/src/gql/Utils.ts
@@ -0,0 +1,74 @@
+import equal from 'fast-deep-equal';
+import * as gql from './graphql';
+
+export type OmitIdentifiers<T> = Omit<T, 'id' | '__typename'>;
+export type RequiredName<T> = T & { name: string };
+
+export function isSuccess(object: any): object is gql.Success {
+ if (object.__typename === undefined) {
+ return false;
+ }
+
+ return object.__typename.endsWith('Success') && (object as gql.Success).message !== undefined;
+}
+
+export function isError(object: any): object is gql.Error {
+ if (object.__typename === undefined) {
+ return false;
+ }
+ return object.__typename.endsWith('Error') && (object as gql.Error).message !== undefined;
+}
+
+type Item = {
+ id: number | string;
+ name: string;
+};
+
+export function itemEquals(a: Item, b: Item) {
+ return a.name == b.name;
+}
+
+function assocEquals(as: Item[], bs: Item[]) {
+ return equal(
+ as.map((a) => a.id),
+ bs.map((b) => b.id)
+ );
+}
+
+function stringEquals(a: string | null | undefined, b: string | null | undefined) {
+ return (a ? a : null) == (b ? b : null);
+}
+
+export function tagEquals(a: gql.FullTag, b: gql.FullTag) {
+ return (
+ itemEquals(a, b) &&
+ stringEquals(a.description, b.description) &&
+ assocEquals(a.namespaces, b.namespaces)
+ );
+}
+
+export function comicEquals(
+ a: gql.FullComicFragment | undefined,
+ b: gql.FullComicFragment | undefined
+) {
+ if (a === undefined) return b === undefined;
+ if (b === undefined) return a === undefined;
+
+ return (
+ stringEquals(a.title, b.title) &&
+ stringEquals(a.originalTitle, b.originalTitle) &&
+ stringEquals(a.url, b.url) &&
+ stringEquals(a.date, b.date) &&
+ a.category == b.category &&
+ a.rating == b.rating &&
+ a.censorship == b.censorship &&
+ a.language == b.language &&
+ a.direction == b.direction &&
+ a.layout == b.layout &&
+ assocEquals(a.artists, b.artists) &&
+ assocEquals(a.circles, b.circles) &&
+ assocEquals(a.characters, b.characters) &&
+ assocEquals(a.tags, b.tags) &&
+ assocEquals(a.worlds, b.worlds)
+ );
+}