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/*
This file is part of GNU Taler
(C) 2022-2024 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/>
*/
declare const __location: unique symbol;
/**
* special string that defined a location in the application
*
* this help to prevent wrong path
*/
export type AppLocation = string & {
[__location]: true;
};
export type EmptyObject = Record<string, never>;
/**
* FIXME: receive parameters
* maybe return URL for reverse function instead of string
* @param pattern
* @param reverse
* @returns
*/
export function urlPattern<
T extends Record<string, string | undefined> = EmptyObject,
>(pattern: RegExp, reverse: (p: T) => string): RouteDefinition<T> {
const url = reverse as (p: T) => AppLocation;
return {
pattern: new RegExp(pattern),
url,
};
}
/**
* defines a location in the app
*
* pattern: how a string will trigger this location
* url(): how a state serialize to a location
*/
export type ObjectOf<T> = Record<string, T> | EmptyObject;
export type RouteDefinition<
T extends ObjectOf<string | undefined> = EmptyObject,
> = {
pattern: RegExp;
url: (p: T) => AppLocation;
};
const nullRountDef = {
pattern: new RegExp(/.*/),
url: () => "" as AppLocation,
};
export function buildNullRoutDefinition<
T extends ObjectOf<string>,
>(): RouteDefinition<T> {
return nullRountDef;
}
/**
* Search path in the pageList
* get the values from the path found
* add params from searchParams
*
* @param path
* @param params
*/
export function findMatch<T extends ObjectOf<RouteDefinition>>(
pagesMap: T,
pageList: Array<keyof T>,
path: string,
params: Record<string, string[]>,
): Location<T> | LocationNotFound<T> {
for (let idx = 0; idx < pageList.length; idx++) {
const name = pageList[idx];
const found = pagesMap[name].pattern.exec(path);
if (found !== null) {
const values = {} as Record<string, unknown>;
if (found.groups !== undefined) {
Object.entries(found.groups).forEach(([key, value]) => {
values[key] = value;
});
}
// @ts-expect-error values is a map string which is equivalent to the RouteParamsType
return { name, parent: pagesMap, values, params };
}
}
// @ts-expect-error values is a map string which is equivalent to the RouteParamsType
return { name: undefined, parent: pagesMap, values: {}, params };
}
/**
* get the type of the params of a location
*
*/
type RouteParamsType<
RouteType,
Key extends keyof RouteType,
> = RouteType[Key] extends RouteDefinition<infer ParamType> ? ParamType : never;
/**
* Helps to create a map of a type with the key
*/
type MapKeyValue<Type> = {
[Key in keyof Type]: Key extends string
? {
parent: Type;
name: Key;
values: RouteParamsType<Type, Key>;
params: Record<string, string[]>;
}
: never;
};
/**
* create a enumeration of value of a mapped type
*/
type EnumerationOf<T> = T[keyof T];
export type Location<T> = EnumerationOf<MapKeyValue<T>>;
export type LocationNotFound<Type> = {
parent: Type;
name: undefined;
values: RouteParamsType<Type, keyof Type>;
params: Record<string, string[]>;
};
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