/**
 * @file tests/device_state.cpp
 * @brief brief
 * @date Mar 14, 2016
 * @author jjacobs
 * @copyright 2016 Dual Inventive Technology Centre B.V.
 *
 * descr
 */
#include <gtest/gtest.h>

#include <di/device.h>

#define CB_PRINT_STATE printf("[%s] Executing [pstate: %u, nstate %u]\n", __func__, pstate, di_device_state_get())

static unsigned int idle_cnt   = 0;
static unsigned int armed_cnt  = 0;
static unsigned int active_cnt = 0;

static void test_reset_counters(void)
{
	idle_cnt   = 0;
	armed_cnt  = 0;
	active_cnt = 0;
}

static void di_device_state_idle_cb(enum di_device_state pstate, void *private_data)
{
	(void)pstate;
	(void)private_data;

	CB_PRINT_STATE;

	idle_cnt++;
}

static void di_device_state_armed_cb(enum di_device_state pstate, void *private_data)
{
	(void)pstate;
	(void)private_data;

	CB_PRINT_STATE;

	armed_cnt++;
}

static void di_device_state_active_cb(enum di_device_state pstate, void *private_data)
{
	(void)pstate;
	(void)private_data;

	CB_PRINT_STATE;

	active_cnt++;
}

/**
 * Set all state callbacks
 */
TEST(device_state_callback, set) {
	di_device_state_set_callback(DI_DEVICE_STATE_IDLE,   &di_device_state_idle_cb);
	di_device_state_set_callback(DI_DEVICE_STATE_ARMED,  &di_device_state_armed_cb);
	di_device_state_set_callback(DI_DEVICE_STATE_ACTIVE, &di_device_state_active_cb);
}

TEST(device_state_callback, execute_idle_armed) {
	/* IDLE -> ARMED */
	EXPECT_EQ(DI_DEVICE_STATE_IDLE, di_device_state_get());
	EXPECT_EQ(DNOK, di_device_token_set(1234));

	EXPECT_EQ(0U, idle_cnt);
	EXPECT_EQ(1U, armed_cnt);
	EXPECT_EQ(0U, active_cnt);

	/* ARMED -> IDLE */
	EXPECT_EQ(DNOK, di_device_token_reset());

	EXPECT_EQ(1U, idle_cnt);
	EXPECT_EQ(1U, armed_cnt);
	EXPECT_EQ(0U, active_cnt);

	/* Again IDLE -> ARMED */
	EXPECT_EQ(DNOK, di_device_token_set(5678));

	EXPECT_EQ(1U, idle_cnt);
	EXPECT_EQ(2U, armed_cnt);
	EXPECT_EQ(0U, active_cnt);

	/* Again ARMED -> IDLE */
	EXPECT_EQ(DNOK, di_device_token_reset());

	EXPECT_EQ(2U, idle_cnt);
	EXPECT_EQ(2U, armed_cnt);
	EXPECT_EQ(0U, active_cnt);

	/* Reset */
	test_reset_counters();
}

TEST(device_state_callback, execute_armed_active) {
	/* IDLE -> ARMED -> ACTIVE */
	EXPECT_EQ(DI_DEVICE_STATE_IDLE, di_device_state_get());
	EXPECT_EQ(DNOK, di_device_token_set(1234));
	EXPECT_EQ(DNOK, di_device_activate());

	EXPECT_EQ(0U, idle_cnt);
	EXPECT_EQ(1U, armed_cnt);
	EXPECT_EQ(1U, active_cnt);

	/* ACTIVE -> ARMED */
	EXPECT_EQ(DNOK, di_device_deactivate());

	EXPECT_EQ(0U, idle_cnt);
	EXPECT_EQ(2U, armed_cnt);
	EXPECT_EQ(1U, active_cnt);

	/* Again ARMED -> ACTIVE */
	EXPECT_EQ(DNOK, di_device_activate());

	EXPECT_EQ(0U, idle_cnt);
	EXPECT_EQ(2U, armed_cnt);
	EXPECT_EQ(2U, active_cnt);

	/* Again ACTIVE -> ARMED */
	EXPECT_EQ(DNOK, di_device_deactivate());

	EXPECT_EQ(0U, idle_cnt);
	EXPECT_EQ(3U, armed_cnt);
	EXPECT_EQ(2U, active_cnt);

	/* ARMED -> IDLE */
	EXPECT_EQ(DNOK, di_device_token_reset());

	EXPECT_EQ(1U, idle_cnt);
	EXPECT_EQ(3U, armed_cnt);
	EXPECT_EQ(2U, active_cnt);

	test_reset_counters();
}