#include <di/time.h>
#include <stdio.h>

#include <gtest/gtest.h>

extern "C" {
#include "time.c"
}

TEST(time, init) {
	di_time_init();
}

TEST(time, get_uptime) {
	uint64_t t;

	/* min 0, msec 0 */
	t = di_time_get_uptime();
	EXPECT_EQ(static_cast<uint64_t>(0), t);

	/* min 0, msec 1 */
	di_time_tick();
	t = di_time_get_uptime();
	EXPECT_EQ(static_cast<uint64_t>(1), t);

	/* min 1, msec 0 */
	for (unsigned int i = 0; i < 59999; i++)
		di_time_tick();
	t = di_time_get_uptime();
	EXPECT_EQ(static_cast<uint64_t>(60000), t);

	/* min 1, msec 0 */
	di_time_tick();
	t = di_time_get_uptime();
	EXPECT_EQ(static_cast<uint64_t>(60001), t);

	// Reset all for further tests
	di_time_reset();

	/* min 0, msec 0 */
	t = di_time_get_uptime();
	EXPECT_EQ(static_cast<uint64_t>(0), t);
}

TEST(time, get_stamp) {
	uint64_t t;

	/* min 0, msec 0 */
	t = di_time_get_stamp();
	EXPECT_EQ(static_cast<uint64_t>(0), t);

	/* min 0, msec 1 */
	di_time_tick();
	t = di_time_get_stamp();
	EXPECT_EQ(static_cast<uint64_t>(1), t);

	/* min 1, msec 0 */
	for (unsigned int i = 0; i < 59999; i++)
		di_time_tick();
	t = di_time_get_stamp();
	EXPECT_EQ(static_cast<uint64_t>(60000), t);

	/* min 1, msec 0 */
	di_time_tick();
	t = di_time_get_stamp();
	EXPECT_EQ(static_cast<uint64_t>(60001), t);

	// Reset all for further tests
	di_time_reset();

	/* min 0, msec 0 */
	t = di_time_get_stamp();
	EXPECT_EQ(static_cast<uint64_t>(0), t);
}

TEST(time, set) {
	uint64_t t;

	/* Invalid min 0, msec 0 */
	t = di_time_get_stamp();
	EXPECT_EQ(static_cast<uint64_t>(0), t);

	/* 1 sec since 1970 to timestamp */
	di_time_set(1);
	t = di_time_get_stamp();
	EXPECT_EQ(static_cast<uint64_t>(1000), t);

	/* 2015-01-01T00:00:00 */
	di_time_set(1420070400);
	t = di_time_get_stamp();
	EXPECT_EQ(static_cast<uint64_t>(1420070400UL * 1000UL), t);
}

TEST(time, set_ms) {
	uint64_t t;

	di_time_reset();

	/* Invalid min 0, msec 0 */
	t = di_time_get_stamp();
	EXPECT_EQ(static_cast<uint64_t>(0), t);

	/* 1 sec since 1970 to timestamp in milliseconds */
	di_time_set_ms(1234);
	t = di_time_get_stamp();
	EXPECT_EQ(static_cast<uint64_t>(1234), t);

	/* 2015-01-01T00:00:00 */
	di_time_set_ms(14200704003456);
	t = di_time_get_stamp();
	EXPECT_EQ(static_cast<uint64_t>(14200704003456UL), t);
}

/** @todo ... real test */
TEST(time, tick_pps) {
	di_time_tick_pps();
}

TEST(time, days_in_month_invalid) {
	EXPECT_EQ(0U, _di_time_days_in_month(0,  1970));
	EXPECT_EQ(0U, _di_time_days_in_month(13, 1970));
	EXPECT_EQ(0U, _di_time_days_in_month(0,  2015));
	EXPECT_EQ(0U, _di_time_days_in_month(13, 2015));
}

TEST(time, datetime_to_unix_invalidCases) {
	// Invalid month 0 (test di_time_days_in_month switch case default)
	// 2015-00-01T00:00:00 -> 0 (unix)
	EXPECT_EQ(static_cast<uint32_t>(0), di_time_datetime_to_unix(
		2015, // year
		0,    // month
		1,    // day
		0,    // hour
		0,    // min
		0     // sec
	));

	// Invalid month 13 (test di_time_days_in_month switch case default)
	// 2015-13-01T00:00:00 -> 0 (unix)
	EXPECT_EQ(static_cast<uint32_t>(0), di_time_datetime_to_unix(
		2015, // year
		13,    // month
		1,    // day
		0,    // hour
		0,    // min
		0     // sec
	));
}

TEST(time, datetime_to_unix) {

	// 01-01-1970T00:00:00 -> 0
	EXPECT_EQ(static_cast<uint32_t>(0), di_time_datetime_to_unix(
		1970, // year
		1,    // month
		1,    // day
		0,    // hour
		0,    // min
		0     // sec
	));

	// 01-01-2015T00:00:00 -> 1420070400
	EXPECT_EQ(static_cast<uint32_t>(1420070400), di_time_datetime_to_unix(
		2015, // year
		1,    // month
		1,    // day
		0,    // hour
		0,    // min
		0     // sec
	));

	// 2015-07-01T01:02:03 -> 1435712523 (unix)
	EXPECT_EQ(static_cast<uint32_t>(1435712523), di_time_datetime_to_unix(
		2015, // year
		7,    // month
		1,    // day
		1,    // hour
		2,    // min
		3     // sec
	));

	// Test leap year getting of amount of days in month februari
	// 2016-03-01T23:59:59 -> 1456876799 (unix)
	EXPECT_EQ(static_cast<uint32_t>(1456876799), di_time_datetime_to_unix(
		2016, // year
		3,    // month
		1,    // day
		23,   // hour
		59,   // min
		59    // sec
	));

	// Invalid month (test di_time_days_in_month switch case default)
	// 2016-14-01T23:59:59 -> 1456876799 (unix)
	di_time_datetime_to_unix(
		2016, // year
		14,   // month
		1,    // day
		23,   // hour
		59,   // min
		59    // sec
	);

	// 01-01-2025T00:00:00 -> 1735689600
	EXPECT_EQ(static_cast<uint32_t>(1735689600), di_time_datetime_to_unix(
		2025, // year
		1,    // month
		1,    // day
		0,    // hour
		0,    // min
		0     // sec
	));

	// 01-01-2035T00:00:00 -> 2051222400
	EXPECT_EQ(static_cast<uint32_t>(2051222400), di_time_datetime_to_unix(
		2035, // year
		1,    // month
		1,    // day
		0,    // hour
		0,    // min
		0     // sec
	));

	// 01-01-2050T00:00:00 -> 2524608000
	EXPECT_EQ(static_cast<uint32_t>(2524608000), di_time_datetime_to_unix(
		2050, // year
		1,    // month
		1,    // day
		0,    // hour
		0,    // min
		0     // sec
	));
}