/*
    AudioStatus
    Base class for Audio* status/metadata reporting

    Copyright (C) 2017  Earle F. Philhower, III

    This program 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 of the License, or
    (at your option) any later version.

    This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
*/

#ifndef _AUDIOSTATUS_H
#define _AUDIOSTATUS_H

#include <Arduino.h>

#include "AudioLogger.h"

class AudioStatus {
public:
    AudioStatus() {
        ClearCBs();
    };
    virtual ~AudioStatus() {};

    void ClearCBs() {
        mdFn = NULL;
        stFn = NULL;
    };

    typedef void (*metadataCBFn)(void *cbData, const char *type, bool isUnicode, const char *str);
    bool RegisterMetadataCB(metadataCBFn f, void *cbData) {
        mdFn = f;
        mdData = cbData;
        return true;
    }

    // Returns a unique warning/error code, varying by the object.  The string may be a PSTR, use _P functions!
    typedef void (*statusCBFn)(void *cbData, int code, const char *string);
    bool RegisterStatusCB(statusCBFn f, void *cbData) {
        stFn = f;
        stData = cbData;
        return true;
    }

    // Safely call the md function, if defined
    inline void md(const char *type, bool isUnicode, const char *string) {
        if (mdFn) {
            mdFn(mdData, type, isUnicode, string);
        }
    }

    // Safely call the st function, if defined
    inline void st(int code, const char *string) {
        if (stFn) {
            stFn(stData, code, string);
        }
    }

private:
    metadataCBFn mdFn;
    void *mdData;
    statusCBFn stFn;
    void *stData;
};

#endif

