arduino-esp32/libraries/WebServer/src/detail/RequestHandler.h

#ifndef REQUESTHANDLER_H
#define REQUESTHANDLER_H

#include <vector>
#include <assert.h>

class RequestHandler {
public:
    virtual ~RequestHandler() { }
    virtual bool canHandle(HTTPMethod method, String uri) { (void) method; (void) uri; return false; }
    virtual bool canUpload(String uri) { (void) uri; return false; }
    virtual bool handle(WebServer& server, HTTPMethod requestMethod, String requestUri) { (void) server; (void) requestMethod; (void) requestUri; return false; }
    virtual void upload(WebServer& server, String requestUri, HTTPUpload& upload) { (void) server; (void) requestUri; (void) upload; }

    RequestHandler* next() { return _next; }
    void next(RequestHandler* r) { _next = r; }

private:
    RequestHandler* _next = nullptr;

protected:
    std::vector<String> pathArgs;

public:
    const String& pathArg(unsigned int i) { 
        assert(i < pathArgs.size());
        return pathArgs[i];
    }
};

#endif //REQUESTHANDLER_H