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//______________________________________________________________________________
//
// Headers
//______________________________________________________________________________

#include "app.h"

//______________________________________________________________________________
//
// This is where the fun is!  Add your code to the callbacks below to define how
// your app behaves.
//
// In this example, we either render the raw ADC data as LED rainbows or store
// and recall the pad state from flash.
//______________________________________________________________________________

// store ADC frame pointer
static const u16 *g_ADC = 0;

// buffer to store pad states for flash save
#define BUTTON_COUNT 100

u8 g_Buttons[BUTTON_COUNT] = {0};

//______________________________________________________________________________

void app_surface_event(u8 type, u8 index, u8 value)
{
    switch (type)
    {
        case  TYPEPAD:
        {
            // toggle it and store it off, so we can save to flash if we want to
            if (value)
            {
                g_Buttons[index] = MAXLED * !g_Buttons[index];
            }
            
            // example - light / extinguish pad LEDs
            hal_plot_led(TYPEPAD, index, 0, 0, g_Buttons[index]);
            
            // example - send MIDI
            hal_send_midi(DINMIDI, NOTEON | 0, index, value);
            
        }
        break;
            
        case TYPESETUP:
        {
            if (value)
            {
                // save button states to flash (reload them by power cycling the hardware!)
                hal_write_flash(0, g_Buttons, BUTTON_COUNT);
            }
        }
        break;
    }
}

//______________________________________________________________________________

void app_midi_event(u8 port, u8 status, u8 d1, u8 d2)
{
    // example - MIDI interface functionality for USB "MIDI" port -> DIN port
    if (port == USBMIDI)
    {
        hal_send_midi(DINMIDI, status, d1, d2);
    }
    
    // // example -MIDI interface functionality for DIN -> USB "MIDI" port port
    if (port == DINMIDI)
    {
        hal_send_midi(USBMIDI, status, d1, d2);
    }
}

//______________________________________________________________________________

void app_sysex_event(u8 port, u8 * data, u16 count)
{
    // example - respond to UDI messages?
}

//______________________________________________________________________________

void app_aftertouch_event(u8 index, u8 value)
{
    // example - send poly aftertouch to MIDI ports
    hal_send_midi(USBMIDI, POLYAFTERTOUCH | 0, index, value);
    
    
}

//______________________________________________________________________________

void app_cable_event(u8 type, u8 value)
{
    // example - light the Setup LED to indicate cable connections
    if (type == MIDI_IN_CABLE)
    {
        hal_plot_led(TYPESETUP, 0, 0, value, 0); // green
    }
    else if (type == MIDI_OUT_CABLE)
    {
        hal_plot_led(TYPESETUP, 0, value, 0, 0); // red
    }
}

//______________________________________________________________________________

void app_timer_event()
{
    // example - send MIDI clock at 125bpm
#define TICK_MS 20
    
    static u8 ms = TICK_MS;
    
    if (++ms >= TICK_MS)
    {
        ms = 0;
        
        // send a clock pulse up the USB
        hal_send_midi(USBSTANDALONE, MIDITIMINGCLOCK, 0, 0);
    }
    
	// alternative example - show raw ADC data as LEDs
	for (int i=0; i < PAD_COUNT; ++i)
	{
		// raw adc values are 12 bit, but LEDs are 6 bit.
		// Let's saturate into r;g;b for a rainbow effect to show pressure
		u16 r = 0;
		u16 g = 0;
		u16 b = 0;
		
		u16 x = (3 * MAXLED * g_ADC[i]) >> 12;
		
		if (x < MAXLED)
		{
			r = x;
		}
		else if (x >= MAXLED && x < (2*MAXLED))
		{
			r = 2*MAXLED - x;
			g = x - MAXLED;
		}
		else
		{
			g = 3*MAXLED - x;
			b = x - 2*MAXLED;
		}
		
		hal_plot_led(TYPEPAD, ADC_MAP[i], r, g, b);
	}
}

//______________________________________________________________________________

void app_init(const u16 *adc_raw)
{
    // example - load button states from flash
    hal_read_flash(0, g_Buttons, BUTTON_COUNT);
    
    // example - light the LEDs to say hello!
    for (int i=0; i < 10; ++i)
    {
        for (int j=0; j < 10; ++j)
        {
            u8 b = g_Buttons[j*10 + i];
            
            hal_plot_led(TYPEPAD, j*10 + i, 0, 0, b);
        }
    }
	
	// store off the raw ADC frame pointer for later use
	g_ADC = adc_raw;
}