tezx/utils/params.js

TezX is a high-performance, lightweight JavaScript framework designed for speed, scalability, and flexibility. It enables efficient routing, middleware management, and static file serving with minimal configuration. Fully compatible with Node.js, Deno, an

export function useParams({ path, urlPattern, }) {
    let params = {};
    path = path.replace(/^\/+|\/+$/g, "");
    urlPattern = urlPattern.replace(/^\/+|\/+$/g, "");
    const pathSegments = path ? path.split("/") : [];
    const patternSegments = urlPattern ? urlPattern.split("/") : [];
    const pathLength = pathSegments.length;
    const patternLength = patternSegments.length;
    if (pathLength > patternLength && !urlPattern.includes("*")) {
        return { success: false, params: {} };
    }
    let pathIndex = 0;
    for (let i = 0; i < patternLength; i++) {
        const patternSegment = patternSegments[i];
        if (patternSegment?.startsWith("*")) {
            const trailingPatterns = patternSegments.slice(i + 1);
            let paramName = patternSegment.length == 1 ? "*" : patternSegment?.slice(1);
            if (trailingPatterns.length > 0) {
                const expectedTrailing = trailingPatterns.join("/");
                const actualTrailing = pathSegments
                    .slice(pathLength - trailingPatterns.length)
                    .join("/");
                const wildcardPath = pathSegments
                    .slice(pathIndex, pathLength - trailingPatterns.length)
                    .join("/");
                if (expectedTrailing !== actualTrailing || !wildcardPath) {
                    return { success: false, params: {} };
                }
                params[paramName] = wildcardPath;
                return { success: true, params };
            }
            else {
                const wildcardPath = pathSegments.slice(pathIndex).join("/");
                if (!wildcardPath) {
                    return { success: false, params: {} };
                }
                params[paramName] = wildcardPath;
                return { success: true, params };
            }
        }
        if (patternSegment.startsWith(":") && patternSegment.endsWith("?")) {
            const paramName = patternSegment.slice(1, -1);
            const nextPattern = patternSegments[i + 1];
            if (nextPattern &&
                !nextPattern.startsWith(":") &&
                nextPattern !== "*" &&
                pathIndex < pathLength &&
                pathSegments[pathIndex] === nextPattern) {
                params[paramName] = null;
                continue;
            }
            const remainingPatterns = patternSegments.slice(i + 1);
            const requiredCount = remainingPatterns.filter((seg) => !(seg.startsWith(":") && seg.endsWith("?"))).length;
            const remainingPath = pathLength - pathIndex;
            if (remainingPath === requiredCount) {
                params[paramName] = null;
            }
            else if (pathIndex < pathLength) {
                params[paramName] = pathSegments[pathIndex];
                pathIndex++;
            }
            else {
                params[paramName] = null;
            }
            continue;
        }
        if (patternSegment.startsWith(":")) {
            const paramName = patternSegment.slice(1);
            if (!/^[a-zA-Z0-9_]+$/.test(paramName)) {
                return { success: false, params: {} };
            }
            if (pathIndex < pathLength) {
                params[paramName] = pathSegments[pathIndex];
                pathIndex++;
            }
            else {
                return { success: false, params: {} };
            }
            continue;
        }
        const pathSegment = pathSegments[pathIndex];
        if (patternSegment !== pathSegment) {
            return { success: false, params: {} };
        }
        pathIndex++;
    }
    if (pathIndex < pathLength) {
        return { success: false, params: {} };
    }
    return { success: true, params };
}