#pragma once
#include "config.h"
#include <SPI.h>
#include <SD.h>
#include <list>
#include <map>
#include <Adafruit_MCP23017.h>
#include "spi_master.h"

#define SCI_MODE 0x00
#define SCI_STATUS 0x01
#define SCI_CLOCKF 0x03
#define SCI_DECODE_TIME 0x04
#define SCI_AUDATA 0x05
#define SCI_VOL 0x0B
#define SCI_WRAMADDR 0x07
#define SCI_WRAM 0x06

#define CMD_WRITE 0x02
#define CMD_READ 0x03

#define ADDR_ENDBYTE 0x1E06

#define SM_CANCEL 0x0008
#define SS_DO_NOT_JUMP 0x8000

class Player {
private:
	enum state { uninitialized, idle, playing, stopping,
		system_sound_while_playing, system_sound_while_stopped,
		sleeping };
	struct album_state {
		uint8_t index;
		uint32_t position;
	};
	void _check_system_sound(String filename);
	void _reset();
	void _init();
	void _wait();
	uint16_t _read_control_register(uint8_t address);
	void _write_control_register(uint8_t address, uint16_t value);
	void _write_data(uint8_t* data);
	uint16_t _read_wram(uint16_t address);
	state _state = state::uninitialized;
	void _refill();
	bool _refill_needed();
	void _flush_and_cancel();
	int8_t _get_endbyte();
	void _flush(uint count, int8_t fill_byte);
	void _set_last_track(const char* album, uint8_t track, uint32_t position);
	std::map<String, album_state> _last_tracks;
	String _random_album();
	void _play_file(String filename, uint32_t offset);
	uint32_t _id3_tag_offset(File f);
	void _finish_playing();
	void _finish_stopping(bool turn_speaker_off);
	void _mute();
	void _unmute();
	void _sleep();
	void _wakeup();
	void _speaker_off();
	void _speaker_on();

	SPISettings _spi_settings_slow = SPISettings(250000, MSBFIRST, SPI_MODE0);
	SPISettings _spi_settings_fast = SPISettings(4000000, MSBFIRST, SPI_MODE0);
	SPISettings* _spi_settings = &_spi_settings_slow;

	std::list<String> _files_in_dir(String dir);
	String _find_album_dir(String album);
	File _file;
	uint8_t _buffer[32];
	String _playing_album;
	uint8_t _playing_index;
	uint8_t _playing_album_songs;
	uint32_t _current_play_position;
	uint _refills;
	uint8_t _volume;
	uint16_t _stop_delay;
	uint32_t _skip_to;
	SPIMaster* _spi;
	unsigned long _stopped_at;
public:
	Player(SPIMaster* s);
	void vol_up();
	void vol_down();
	void track_next();
	void track_prev();
	bool is_playing();

	bool play_album(String album);
	void play_random_album();
	bool play_song(String album, uint8_t song_index, uint32_t offset=0);
	void play_system_sound(String filename);
	void stop(bool turn_speaker_off=true);
	bool loop();
	void set_volume(uint8_t vol, bool save = true);
	std::list<String> ls(String path, bool withFiles=true, bool withDirs=true, bool withHidden=false);
	String album() { return _playing_album; }
	uint8_t track() { return _playing_index; }
	uint32_t position() { return _current_play_position; }
	uint8_t volume() { return _volume; }
};