form_parser.h

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#pragma once

#include <unordered_map>
#include "form_entity.h"

using KeyValueStorage = std::unordered_map<std::string, std::string>;
using KeyEntityStorage = std::unordered_map<std::string, FormEntity *>;

class FormParser {
protected:
    KeyEntityStorage * values = nullptr;
    FormEntity * valueCurrent = nullptr;
    std::string keyCurrent;
    std::string formBody;
    std::string valuesDelimiter;
    std::string pairsDelimiter;
public:
    KeyEntityStorage * parseForm(std::string & httpRequest, KeyValueStorage * KVPStorage = nullptr);

    virtual ~FormParser();
protected:
    void selectFormBody();

    virtual void actionBeforeSelectingBody() {};

    virtual void parseNextKey(size_t startPosition, size_t endPosition) = 0;

    virtual void parseNextValue(size_t startPosition, size_t endPosition) = 0;

    virtual void actionBeforeValueParsing(size_t keyStart, size_t keyEnd) {};

    KeyValueStorage getKeyValuePairs();

    void setCurrentValue(FormEntity * valueCurrent);
};