esmp3/include/data_sources.h

#pragma once

#include <Arduino.h>
#include <SD.h>
#include "config.h"
#include "http_client_wrapper.h"

class DataSource {
private:
public:
	DataSource() {};
	virtual ~DataSource() {};
	virtual size_t read(uint8_t* buf, size_t len) = 0;
	virtual int read() = 0;
	virtual size_t position() = 0;
	virtual void seek(size_t position) = 0;
	virtual size_t size() = 0;
	virtual void close() = 0;
	virtual bool usable() = 0;
	virtual int peek(int offset) = 0;
	void skip_id3_tag();
};

class SDDataSource : public DataSource {
private:
	File _file;
public:
	SDDataSource(String file);
	~SDDataSource();
	size_t read(uint8_t* buf, size_t len);
	int read();
	size_t position();
	void seek(size_t position);
	size_t size();
	void close();
	bool usable();
	int peek(int offset=0);
};

class HTTPSDataSource : public DataSource {
private:
	WiFiClient* _stream = NULL;
	HTTPClientWrapper* _http = NULL;
	uint32_t _position;
	String _url;
	void _init(String url, uint32_t offset);
public:
	HTTPSDataSource(String url, uint32_t offset=0);
	~HTTPSDataSource();
	size_t read(uint8_t* buf, size_t len);
	int read();
	size_t position();
	void seek(size_t position);
	size_t size();
	void close();
	bool usable();
	int peek(int offset=0);
};