import { getRouteMatcher } from './route-matcher';
import { getRouteRegex } from './route-regex';
export function interpolateAs(route, asPathname, query) {
    let interpolatedRoute = '';
    const dynamicRegex = getRouteRegex(route);
    const dynamicGroups = dynamicRegex.groups;
    const dynamicMatches = // Try to match the dynamic route against the asPath
    (asPathname !== route ? getRouteMatcher(dynamicRegex)(asPathname) : '') || // Fall back to reading the values from the href
    // TODO: should this take priority; also need to change in the router.
    query;
    interpolatedRoute = route;
    const params = Object.keys(dynamicGroups);
    if (!params.every((param)=>{
        let value = dynamicMatches[param] || '';
        const { repeat, optional } = dynamicGroups[param];
        // support single-level catch-all
        // TODO: more robust handling for user-error (passing `/`)
        let replaced = `[${repeat ? '...' : ''}${param}]`;
        if (optional) {
            replaced = `${!value ? '/' : ''}[${replaced}]`;
        }
        if (repeat && !Array.isArray(value)) value = [
            value
        ];
        return (optional || param in dynamicMatches) && // Interpolate group into data URL if present
        (interpolatedRoute = interpolatedRoute.replace(replaced, repeat ? value.map(// these values should be fully encoded instead of just
        // path delimiter escaped since they are being inserted
        // into the URL and we expect URL encoded segments
        // when parsing dynamic route params
        (segment)=>encodeURIComponent(segment)).join('/') : encodeURIComponent(value)) || '/');
    })) {
        interpolatedRoute = '' // did not satisfy all requirements
        ;
    // n.b. We ignore this error because we handle warning for this case in
    // development in the `<Link>` component directly.
    }
    return {
        params,
        result: interpolatedRoute
    };
}

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