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/*
This file is part of GNU Taler
(C) 2022 Taler Systems S.A.
GNU Taler 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, or (at your option) any later version.
GNU Taler 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
GNU Taler; see the file COPYING. If not, see <http://www.gnu.org/licenses/>
*/
/**
*
* @author Sebastian Javier Marchano (sebasjm)
*/
import { TranslatedString } from "@gnu-taler/taler-util";
import { ComponentChildren, createContext, h, VNode } from "preact";
import { useContext, useState } from "preact/hooks";
export type AlertType = "info" | "warning" | "error" | "success";
export interface Alert {
message: TranslatedString;
description: TranslatedString | VNode;
type: AlertType;
}
export interface ErrorAlert extends Alert {
type: "error";
context: object;
cause: any;
}
type Type = {
alerts: Alert[];
pushAlert: (n: Alert) => void;
removeAlert: (n: Alert) => void;
};
const initial: Type = {
alerts: [],
pushAlert: () => {
null;
},
removeAlert: () => {
null;
},
};
const Context = createContext<Type>(initial);
type AlertWithDate = Alert & { since: Date };
type Props = Partial<Type> & {
children: ComponentChildren;
};
export const AlertProvider = ({ children }: Props): VNode => {
const timeout = 3000;
const [alerts, setAlerts] = useState<AlertWithDate[]>([]);
const pushAlert = (n: Alert): void => {
const entry = { ...n, since: new Date() };
setAlerts((ns) => [...ns, entry]);
if (n.type !== "error") {
setTimeout(() => {
setAlerts((ns) => ns.filter((x) => x.since !== entry.since));
}, timeout);
}
};
const removeAlert = (alert: Alert): void => {
setAlerts((ns: AlertWithDate[]) => ns.filter((n) => n !== alert));
};
return h(Context.Provider, {
value: { alerts, pushAlert, removeAlert },
children,
});
};
export const useAlertContext = (): Type => useContext(Context);
export function alertFromError(
message: TranslatedString,
error: unknown,
...context: any[]
): ErrorAlert {
let description = "" as TranslatedString;
const isObject = typeof error === "object" &&
error !== null;
const hasMessage =
isObject &&
"message" in error &&
typeof error.message === "string";
if (hasMessage) {
description = error.message as TranslatedString;
} else {
description = `Unknown error: ${String(error)}` as TranslatedString;
}
return {
type: "error",
message,
description,
cause: error,
context,
};
}
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