/*
 *  test.c
 * 
 *  Created by Matthias Ringwald on 7/14/09.
 */

#include <unistd.h>
#include <stdio.h>
#include <stdlib.h>
#include <strings.h>

#include <btstack/btstack.h>

// bd_addr_t addr = {0x00, 0x03, 0xc9, 0x3d, 0x77, 0x43 };  // Think Outside Keyboard
bd_addr_t addr = {0x00, 0x19, 0x1d, 0x90, 0x44, 0x68 };  // WiiMote

hci_con_handle_t con_handle;
uint16_t source_cid_interrupt;
uint16_t source_cid_control;

void packet_handler(uint8_t packet_type, uint8_t *packet, uint16_t size){
	bd_addr_t event_addr;

	switch (packet_type) {
			
		case L2CAP_DATA_PACKET:
			// just dump data for now
			hexdump( packet, size );
	
			// HOME => disconnect
			if (packet[8] == 0xA1) {							// Status report
				if (packet[9] == 0x30 || packet[9] == 0x31) {   // type 0x30 or 0x31
					if (packet[11] & 0x080) {                   // homne button pressed
						printf("Disconnect baseband\n");
						bt_send_cmd(&hci_disconnect, con_handle, 0x13); // remote closed connection
					}
				}
			}
			break;
			
		case HCI_EVENT_PACKET:
			
			switch (packet[0]) {

				case BTSTACK_EVENT_POWERON_FAILED:
					printf("HCI Init failed - make sure you have turned off Bluetooth in the System Settings\n");
					exit(1);
					break;
					
				case BTSTACK_EVENT_STATE:
					// bt stack activated, get started - set local name
					if (packet[2] == HCI_STATE_WORKING) {
						bt_send_cmd(&hci_write_local_name, "BTstack-Test");
					}
					break;
					
				case HCI_EVENT_PIN_CODE_REQUEST:
					// inform about pin code request
					printf("Please enter PIN 1234 on remote device\n");
					break;

				case L2CAP_EVENT_CHANNEL_OPENED:
					// inform about new l2cap connection
					bt_flip_addr(event_addr, &packet[2]);
					uint16_t psm = READ_BT_16(packet, 10); 
					uint16_t source_cid = READ_BT_16(packet, 12); 
					con_handle = READ_BT_16(packet, 8);
					printf("Channel successfully opened: ");
					print_bd_addr(event_addr);
					printf(", handle 0x%02x, psm 0x%02x, source cid 0x%02x, dest cid 0x%02x\n",
						   con_handle, psm, source_cid,  READ_BT_16(packet, 14));
					
					if (psm == 0x13) {
						source_cid_interrupt = source_cid;
						// interupt channel openedn succesfully, now open control channel, too.
						bt_send_cmd(&l2cap_create_channel, event_addr, 0x11);
					} else {
						source_cid_control = source_cid;
						// request acceleration data..
						uint8_t setMode31[] = { 0x52, 0x12, 0x00, 0x31 };
						bt_send_l2cap( source_cid, setMode31, sizeof(setMode31));
						// stop blinking
						uint8_t setLEDs[] = { 0x52, 0x11, 0x10 };
                        bt_send_l2cap( source_cid, setLEDs, sizeof(setLEDs));
					}
					break;
					
				case HCI_EVENT_DISCONNECTION_COMPLETE:
					// connection closed -> quit tes app
					printf("Basebank connection closed, exit.\n");
					exit(0);
					break;
					
				case HCI_EVENT_COMMAND_COMPLETE:
					// use pairing yes/no
					if ( COMMAND_COMPLETE_EVENT(packet, hci_write_local_name) ) {
						bt_send_cmd(&hci_write_authentication_enable, 0);
					}
					
					// connect to HID device (PSM 0x13) at addr
					if ( COMMAND_COMPLETE_EVENT(packet, hci_write_authentication_enable) ) {
						bt_send_cmd(&l2cap_create_channel, addr, 0x13);
						printf("Press 1+2 on WiiMote to make it discoverable - Press HOME to disconnect later :)\n");
					}
					break;
					
				default:
					// other event
					break;
			}
			break;
			
		default:
			// other packet type
			break;
	}
}

int main (int argc, const char * argv[]){
	run_loop_init(RUN_LOOP_POSIX);
	int err = bt_open();
	if (err) {
		printf("Failed to open connection to BTdaemon\n");
		return err;
	}
	bt_register_packet_handler(packet_handler);
	bt_send_cmd(&btstack_set_power_mode, HCI_POWER_ON );
	run_loop_execute();
	bt_close();
}