#include <shell.h>
#include <uart/uart.h>
#include <string.h>
#include <adc-meas.h>

#define xstr(x) str(x)
#define str(x) #x

#ifndef GIT_VER
#define GIT_VER "VERSION NOT SET"
#endif

static shellmatta_instance_t shell;
static char shell_buffer[512];
static char history_buffer[1024];

static shellmatta_retCode_t write_shell_callback(const char *data, uint32_t len)
{
	uart_send_array(data, len);

	return SHELLMATTA_OK;
}

static shellmatta_retCode_t shell_cmd_ver(const shellmatta_handle_t   handle,
						    const char                  *arguments,
						    uint32_t                    length)
{
	(void)arguments;
	(void)length;

	shellmatta_printf(handle, "Reflow Oven Controller Firmware %s", xstr(GIT_VER));

	return SHELLMATTA_OK;
}

static shellmatta_retCode_t shell_cmd_pt1000_res(const shellmatta_handle_t   handle,
						 const char                  *arguments,
						 uint32_t length)
{
	(void)arguments;
	(void)length;
	float resistance;
	int pt1000_status;
	const char *display_status;
	enum adc_pt1000_error pt1000_flags;
	const char *status_text[] = {"VALID", "WATCHDOG", "DATA-OVERFLOW", "UNSTABLE"};


	display_status = status_text[0];
	pt1000_status = adc_pt1000_get_current_resistance(&resistance);

	if (pt1000_status == 2) {
		display_status = status_text[3];
	} else if (pt1000_status) {
		pt1000_flags = adc_pt1000_check_error();
		if (pt1000_flags & ADC_PT1000_WATCHDOG_ERROR)
			display_status = status_text[1];
		else if (pt1000_flags & ADC_PT1000_OVERFLOW)
			display_status = status_text[2];
	}

	shellmatta_printf(handle, "PT1000 resistance: %.2f Ohm [%s]\r\n", resistance, display_status);

	return SHELLMATTA_OK;
}
static shellmatta_retCode_t shell_cmd_clear_error_status(const shellmatta_handle_t   handle,
						 const char                  *arguments,
						 uint32_t length)
{
	adc_pt1000_clear_error();

	return SHELLMATTA_OK;
}
//typedef struct shellmatta_cmd
//{
//    char                    *cmd;       /**< command name                           */
//    char                    *cmdAlias;  /**< command alias                          */
//    char                    *helpText;  /**< help text to print in "help" command   */
//    char                    *usageText; /**< usage text to print on parameter error */
//    shellmatta_cmdFct_t     cmdFct;     /**< pointer to the cmd callack function    */
//    struct shellmatta_cmd   *next;      /**< pointer to next command or NULL        */
//} shellmatta_cmd_t;

static shellmatta_cmd_t cmd[3] = {
	{
		.cmd = "version",
		.cmdAlias = "ver",
		.helpText = "Print firmware version",
		.usageText = NULL,
		.cmdFct = shell_cmd_ver,
		.next = &cmd[1],
	},
	{
		.cmd = "pt1000",
		.cmdAlias = "pt",
		.helpText = "Get current filtered and calibrated PT1000 resistance",
		.usageText = NULL,
		.cmdFct = shell_cmd_pt1000_res,
		.next = &cmd[2],
	},
	{
		.cmd = "pt1000-clear-error",
		.cmdAlias = "pt-clear",
		.helpText = "Clear error status of PT1000 reading",
		.usageText = NULL,
		.cmdFct = shell_cmd_clear_error_status,
		.next = NULL,
	},
};

shellmatta_handle_t shell_init(void)
{
	shellmatta_handle_t handle;
	shellmatta_retCode_t ret;

	ret = shellmatta_doInit(&shell, &handle, shell_buffer, sizeof(shell_buffer), history_buffer, sizeof(history_buffer),
			  "Enter command:\r\n", cmd, write_shell_callback);
	if (ret != SHELLMATTA_OK)
		handle = NULL;

	return handle;
}


void shell_handle_input(shellmatta_handle_t shell, const char *data, size_t len)
{
	 if (!shell)
		 return;

	 shellmatta_processData(shell, (char *)data, (uint32_t)len);
}

void shell_print_string(shellmatta_handle_t shell, const char *string)
{
	if (!shell)
		return;

	shellmatta_write(shell, (char *)string, strlen(string));
}