main/config.h

/**
 * @file config.h
 * @brief The BrewBoard configuration data. These are stored in the 
 *        spiffs filesystem in a flash partition.
 */

#ifndef	_CONFIG_H
#define	_CONFIG_H

// Global includes for the project

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stdbool.h>
#include <time.h>
#include <errno.h>
#include <sys/unistd.h>
#include <sys/fcntl.h>
#include <sys/time.h>

#include "freertos/FreeRTOS.h"
#include "freertos/task.h"
#include "freertos/semphr.h"
#include "freertos/event_groups.h"
#include "freertos/queue.h"
#include "driver/i2c.h"
#include "esp_log.h"
#include "esp_spiffs.h"
#include "esp_event.h"
#include "esp_wifi.h"
#include "esp_wifi_types.h"
#include "esp_system.h"

#include "esp_ota_ops.h"
#include "esp_http_client.h"
#include "esp_https_ota.h"

#include "esp_vfs.h"
#include "esp_vfs_fat.h"
#include "nvs.h"
#include "nvs_flash.h"
#include "esp32/rom/crc.h"
#include "mdns.h"
#include "lwip/sockets.h"
#include "lwip/api.h"
#include "lwip/err.h"
#include "lwip/netdb.h"
#include "lwip/dns.h"
#include "lwip/opt.h"
#include "lwip/memp.h"
#include "lwip/ip.h"
#include "lwip/raw.h"
#include "lwip/udp.h"
#include "sdkconfig.h"
#include "lwip/apps/sntp.h"
#include "expat.h"

#include "tftspi.h"
#include "tft.h"
#include "PID_v1.h"
#include "websocket_server.h"

#include "buttons.h"
#include "calibration.h"
#include "automation.h"
#include "manual.h"
#include "setup.h"
#include "recipes.h"
#include "files.h"
#include "updates.h"

#include "task_tft.h"
#include "task_ds18b20.h"
#include "task_sdcard.h"
#include "task_driver.h"
#include "task_wifi.h"
#include "task_sound.h"
#include "task_http.h"


/**
 * @brief Main mode different screens
 */
typedef enum
{
    MAIN_MODE_UNKNOWN = -1,		///< During system startup
    MAIN_MODE_FREE = 0,			///< Main menu, do nothing
    MAIN_MODE_CALIBRATION,		///< TFT calibration
    MAIN_INFO,				///< Info/about screen
    MAIN_TOOLS,				///< Main tools screen
    MAIN_TOOLS_SETUP,			///< Main setup screen
    MAIN_TOOLS_SETUP_CONFIG,		///< Main setup configuration
    MAIN_TOOLS_SETUP_CO_EDIT,		///< Main setup confguration editor
    MAIN_TOOLS_SETUP_EQUIPMENT,		///< Main setup equipment
    MAIN_TOOLS_SETUP_EQ_EDIT,		///< Main setup edit equipment
    MAIN_TOOLS_SETUP_WIFI,		///< Main setup WiFi
    MAIN_TOOLS_SETUP_WIFI_CUR,		///< Main setup WiFi current connection.
    MAIN_TOOLS_SETUP_WIFI_CON,		///< Main setup WiFi connect.
    MAIN_TOOLS_SETUP_WIFI_NEW,		///< Main setup WiFi new connection.
    MAIN_TOOLS_SETUP_CALIBRATION,	///< Main setup TFT calibration
    MAIN_TOOLS_RECIPE,			///< Main recipes screen.
    MAIN_TOOLS_RECIPE_EDIT,		///< Main recipes editor.
    MAIN_TOOLS_FILES,			///< Main files.
    MAIN_TOOLS_FILES_DIR,		///< Main files directory listings.
    MAIN_TOOLS_FILES_RESTORE,		///< Main files restore.
    MAIN_TOOLS_FILES_BACKUP,		///< Main files backup.
    MAIN_TOOLS_UPDATES,			///< Main Updates.
    MAIN_AUTO_INIT1 = 96,		///< Automatic start part 1
    MAIN_AUTO_INIT2,			///< Automatic start part 2
    MAIN_AUTO_DELAYSTART,		///< Delayed start
    MAIN_AUTO_HEATUP,			///< Heatup the HLT
    MAIN_AUTO_MASH = 100,		///< Mash steps
    MAIN_AUTO_TOBOIL = 120,		///< Going to boil
    MAIN_AUTO_BOILING,			///< Boiling
    MAIN_AUTO_WHIRLPOOL9,		///< Whirlpool
    MAIN_AUTO_COOLING_H,		///< Cooling hot type
    MAIN_AUTO_WHIRLPOOL7,		///< Whirlpool
    MAIN_AUTO_COOLING_M,		///< Cooling medium type
    MAIN_AUTO_WHIRLPOOL6,		///< Whirlpool
    MAIN_AUTO_COOLING_C,		///< Cooling cold type
    MAIN_AUTO_WHIRLPOOL2,		///< Whirlpool
    MAIN_AUTO_DONE,			///< Finished
    MAIN_AUTO_ABORT,			///< Aborted
    MAIN_MANUAL_INIT = 200,		///< Manual control init
    MAIN_MANUAL_MAIN,			///< Manual control main menu
} MAIN_MODE;

/**
 * @brief The differents stages in the mash steps.
 */
typedef enum {
    MASH_NONE = 0,			///< Initial Mash state
    MASH_WAITTEMP,			///< Wait to reach temperature.
    MASH_REST,				///< Mash rest
    MASH_ADD,				///< Wait add mash
    MASH_IODINE,			///< Wait iodine test
    MASH_REMOVE,			///< Wait mash remove
    MASH_INFUSE,			///< Wait infusion prompt
    MASH_DECOCT,			///< Wait decoction prompt
} MASH_TYPE;

/**
 * @brief The working mode of the second heater SSR.
 */
typedef enum {
    SSR2_OFF = 0,			///< SSR2 not used.
    SSR2_HLT_SHARE,			///< SSR2 for HLT shared with MLT
    SSR2_HLT_IND,			///< SSR2 for HLT independend.
    SSR2_ON_IDLE,			///< SSR2 on when NLT is idle.
} SSR2_TYPE;


/**
 * @brief Global configuration. File /spiffs/config.conf
 */
struct strConfig {
    uint8_t		Version;			///< Record version number for updates.
    uint8_t		Unit;				///< Celsius or Farenheit (not used yet).
    float		BoilTemperature;		///< The temperature when water boils.
    bool		AskAdd;				///< Ask to add the mash.
    bool		AskRemove;			///< Ask to remove the mash.
    bool		AskIodine;			///< Ask to confirm the iodine test.
    uint8_t		IodineTime;			///< Continue after this time if not confirmed.
    int			EquipmentRec;			///< Equipment record number.
    char		ntp_server[32];			///< Preffered NTP server.
    char		hostname[32];			///< Our hostname.
    char		ap_ssid[32];			///< AP SSID.
    char		ap_pwd[64];			///< AP password.
    uint8_t		ap_channel;			///< AP channel.
    uint8_t		ap_ssid_hidden;			///< AP SSID hidden.
    wifi_bandwidth_t	ap_bandwidth;			///< AP channel bandwidth.
    uint16_t		ts_xleft;			///< TS calibration X left.
    uint16_t		ts_xright;			///< TS calibration X right.
    uint16_t		ts_ytop;			///< TS calibration Y top.
    uint16_t		ts_ybottom;			///< TS calibration Y bottom.
    int			RecipeRec;			///< Current recipe record.
    char		uuid[37];			///< Sort of uuid code.
    char		lastSSID[32];			///< Last connected station.
} config;						///< Config record.

/**
 * @brief Write configuration to disk.
 */
void write_config(void);

/** @brief Read configuration file. If it doesn't exist create and
 *         write a new configuration file with sane defaults.
 */
void read_config(void);


/**
 * @brief Equipment configuration. File /spiffs/equipments.conf
 */
struct strEquipment {
    int		Version;			///< Record version number for updates.
    int		Record;				///< Record number.
    char	Name[32];			///< Equipment name.
    int		BoilPower;			///< The power percentage needed to keep the wort boiling.
    int		MashPower;			///< The power percentage needed to heat during mash.
    int		PumpCycle;			///< Minutes to run the pump during mash rest.
    int		PumpRest;			///< Minutes to pause the pump during mash rests.
    bool	PumpPreMash;			///< Pump on before mash-in.
    bool	PumpOnMash;			///< Pump on during mashing.
    bool	PumpMashOut;			///< Pump on during mash remove.
    bool	PumpOnBoil;			///< Pump on during the boil.
    int		PumpMaxTemp;			///< Turn pump off above this temperature.
    bool	PIDPipe;			///< Run PID during mash removal.
    int		SSR2;				///< Use second SSR (HLT) or not.
    float	TempHLT;			///< The temperature of the sparge water.
    double	PID_kP;				///< PID P setting.
    double	PID_kI;				///< PID I setting.
    double	PID_kD;				///< PID D setting.
    bool	xPID_POn;
    int		SampleTime;			///< PID sample time in seconds.
} equipment;					///< Equipment record.

/**
 * @brief Append equipments record to disk.
 */
void append_equipment(void);

/** 
 * @brief Read equipments file. If it doesn't exist create and
 *        write a new equipment file with sane defaults.
 *        This is then the first and default brew equipment.
 * @param RecNo Read the record with Record is RecNo. Start at 1.
 */
void read_equipment(int RecNo);

/**
 * @brief Write rquipment record. It should exist.
 * @param RecNo The equipment record in memory to write at record. Records start at 1.
 */
void write_equipment(int RecNo);

/**
 * @brief Delete equipment record, renumber remaining records.
 * @param RecNo The record to remove.
 */
void delete_equipment(int RecNo);


/**
 * @brief Records with WiFi stations we have succesfully connected.
 */
struct strStations {
    char	SSID[32];			///< Station SSID
    char	Password[64];			///< Station password
    bool	hide;				///< Hide from AP scan.
} wifiStation;					///< Station record.

/**
 * @brief Add a new station record.
 * @param SSID The SSID
 * @param Password The password for this SSID
 * @return The record number, or -1 if error.
 */
int add_station(uint8_t *SSID, uint8_t *Password);

/**
 * @brief Read station info record.
 * @param SSID Search for the SSID and load the record if found.
 * @return Return -1 if not found, else the record number and the wifiStation record is filled.
 */
int read_station(uint8_t *SSID);

/**
 * @brief Remove station record.
 * @param SSID The SSID to remove.
 */
void remove_station(uint8_t *SSID);

/**
 * @brief Blacklist station SSID
 * @param SSID The SSID to blacklist.
 * @return -1 if error, else the record number.
 */
int blacklist_station(uint8_t *SSID);


/**
 * @brief Runtime configuration. File /spiffs/runtime.conf
 */
struct strRuntime {
    uint8_t		Version;			///< Record version number for updates.
    bool		AutoModeStarted;		///< Running automode.
    int			StageResume;			///< Current Resume Stage.
    int			StageTimeLeft;			///< Current Stage Time left.
    uint8_t		HopAddition;			///< Current Hop Addition.
    float		ManualMLT;			///< Last used MLT temperature.
    float		ManualHLT;			///< Last used HLT temperature.
    time_t		BrewStart;			///< Brew start time.
    char		Logfile[64];			///< Brew logfile.
    bool		UseHLT;				///< Use HLT during brew.
    bool		PumpCooling;			///< Pump during cooling.
    uint32_t		TimeBrewing;			///< Time we are brewing.
    uint8_t		MashStep;			///< Current mash step.
    bool		MaltAdded;			///< If malt was added.
} runtime;						///< Runtime record.


/**
 * @brief Write runtime information to disk.
 */
void write_runtime(void);

/** 
 * @brief Read runtime information file. If it doesn't exist create and
 *        write a new runtime file with sane defaults.
 */
void read_runtime(void);


#define	RECIPE_VERSION		2		///< Recipe file version
#define MASH_MAX		16		///< Maximum 16 mash steps
#define ADDITION_MAX		20		///< Maximum 20 additions

/**
 * @brief Mash step types
 */
typedef enum {
    MASHTYPE_INFUSION = 0,
    MASHTYPE_TEMPERATURE,
    MASHTYPE_DECOCTION,
} MASHSTEP_TYPE;

/**
 * @brief Addition types
 */
typedef enum {
    ADDITION_HOP = 0,
    ADDITION_FERMENTABLE = 1,
    ADDITION_SPICE = 2,
    ADDITION_FINING = 3,
    ADDITION_WATER_AGENT = 4,
    ADDITION_HERB = 5,
    ADDITION_FLAVOR = 6,
    ADDITION_OTHER = 7,
} ADDITION_TYPE;

/**
 * @brief Mash steps
 */
typedef struct strMashStep {
    char                Name[32];                       ///< Step name.
    uint8_t             Type;                           ///< Step Type.
    float               Step_temp;                      ///< Step start temperature.
    uint16_t            Step_time;                      ///< Step rest time.
    uint16_t            Ramp_time;                      ///< Step time to reach temp.
    float               End_temp;                       ///< Step end temperature.
    float               Infuse_amount;                  ///< Infuse/decoct amount in liters.
    float               Infuse_temp;                    ///< Infuse temperature.
} mashstep_t;

/**
 * @brief Hop and other additions
 */
typedef struct strAddition {
    uint16_t		Time;				///< Time for addition.
    uint8_t		Type;				///< Addition type, Hop, Syrop ...
    char		Name[64];			///< Addition name.
} addition_t;

/**
 * @brief Recipes database. Starts with a header block for future upgrades,
 *        followed by the actual recpie records.
 */
struct hdrRecipe {
    uint32_t		version;			///< Structure version.
    uint32_t		hdrsize;			///< Size of this header.
    uint32_t		recsize;			///< Size of a record.
    uint8_t		mashmax;			///< Maximum mash steps.
    uint8_t		additionmax;			///< Maximum additions.
} recipe_hdr;

struct strRecipe {
    char		Name[128];			///< Recipe name.
    char		Code[32];			///< Recipe code.
    uint16_t		BoilTime;			///< Boil time.
    uint8_t		Mashsteps;			///< Number of mashsteps.
    uint8_t		Additions;			///< Number of additions.
    float		CoolTemp;			///< Cool temperature.
    uint16_t		Whirlpool9;			///< Zero or the Hot Whirlpool time 88..100 °
    uint16_t		Whirlpool7;			///< Zero or the Sub Isomerization Whirlpool time 71..77 °
    uint16_t		Whirlpool6;			///< Zero or the "Tepid" Whirlpool time 60..66 °
    uint16_t		Whirlpool2;			///< Zero or the Cold Whirlpool time < 30 °
    float		SpargeTemp;			///< Sparge water temperature.
    mashstep_t		MashStep[MASH_MAX];		///< Mash steps.
    addition_t		Addition[ADDITION_MAX];		///< Additions.
} recipe;						///< Recipe record.

/**
 * @brief Append a recipe record. Create file if it doesn't exist.
 */
void append_recipe(void);

/**
 * @brief Write current recipe
 * @param RecNo Record number starting at 1.
 */
void write_recipe(int RecNo);

/**
 * @brief Read current recipe
 * @param RecNo The record to read, start at 1.
 */
void read_recipe(int RecNo);

/**
 * @brief Delete recipe record, renumber remaining records.
 * @param RecNo The record to remove.
 */
void delete_recipe(int RecNo);


#endif