Kyoo/front/packages/ui/src/fetch.tsx

128 lines
3.5 KiB
TypeScript

/*
* Kyoo - A portable and vast media library solution.
* Copyright (c) Kyoo.
*
* See AUTHORS.md and LICENSE file in the project root for full license information.
*
* Kyoo is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* any later version.
*
* Kyoo is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with Kyoo. If not, see <https://www.gnu.org/licenses/>.
*/
import { Page, QueryIdentifier, useFetch, KyooErrors } from "@kyoo/models";
import { Breakpoint, P } from "@kyoo/primitives";
import { View } from "react-native";
import { useYoshiki } from "yoshiki/native";
export type Layout = { numColumns: Breakpoint<number>; size: Breakpoint<number> };
export type WithLoading<Item> =
| (Item & { isLoading: false })
| (Partial<Item> & { isLoading: true });
// We keep a Partial<Item> on the error value to allow destructuring.
export type WithError<Item> =
| (Item & { isError: false; error: undefined })
| (Partial<Item> & { isError: true; error: KyooErrors });
const isPage = <T = unknown,>(obj: unknown): obj is Page<T> =>
(typeof obj === "object" && obj && "items" in obj) || false;
export const FetchNE = <Data,>({
query,
placeholderCount = 1,
children,
}: {
query: QueryIdentifier<Data>;
placeholderCount?: number;
children: (
item: Data extends Page<infer Item>
? WithError<WithLoading<Item>>
: WithError<WithLoading<Data>>,
i: number,
) => JSX.Element | null;
}): JSX.Element | null => {
const { data, error } = useFetch(query);
// @ts-ignore
if (error) return children({ isError: true, error }, 0);
if (!data) {
const placeholders = [...Array(placeholderCount)].map((_, i) =>
children({ isLoading: true } as any, i),
);
return <>{placeholderCount === 1 ? placeholders[0] : placeholders}</>;
}
if (!isPage<object>(data))
return children(data ? { ...data, isLoading: false } : ({ isLoading: true } as any), 0);
return <>{data.items.map((item, i) => children({ ...item, isLoading: false } as any, i))}</>;
};
export const Fetch = <Data,>({
children,
...params
}: {
query: QueryIdentifier<Data>;
placeholderCount?: number;
children: (
item: Data extends Page<infer Item> ? WithLoading<Item> : WithLoading<Data>,
i: number,
) => JSX.Element | null;
}): JSX.Element | null => {
return (
<FetchNE {...params}>
{({ isError, error, ...item }, i) =>
// @ts-ignore
isError ? <ErrorView error={error} /> : children(item, i)
}
</FetchNE>
);
};
export const ErrorView = ({ error }: { error: KyooErrors }) => {
const { css } = useYoshiki();
return (
<View
{...css({
backgroundColor: (theme) => theme.colors.red,
flexGrow: 1,
flexShrink: 1,
justifyContent: "center",
alignItems: "center",
})}
>
{error.errors.map((x, i) => (
<P key={i} {...css({ color: (theme) => theme.colors.white })}>
{x}
</P>
))}
</View>
);
};
export const EmptyView = ({ message }: { message: string }) => {
const { css } = useYoshiki();
return (
<View
{...css({
flexGrow: 1,
flexShrink: 1,
justifyContent: "center",
alignItems: "center",
})}
>
<P {...css({ color: (theme) => theme.heading })}>{message}</P>
</View>
);
};