package carbon

import (
	"strconv"
	"testing"
	"time"

	"github.com/stretchr/testify/assert"
)

func TestCarbon_CreateFromStdTime(t *testing.T) {
	loc, _ := time.LoadLocation("Asia/Shanghai")
	tt := time.Now().In(loc)
	expected := tt.Format(DateTimeLayout)
	actual := CreateFromStdTime(tt).ToDateTimeString()
	assert.Equal(t, expected, actual)
}

func TestCarbon_CreateFromTimestamp(t *testing.T) {
	assert := assert.New(t)

	tests := []struct {
		timestamp int64
		expected  string
	}{
		{-1, "1970-01-01 07:59:59 +0800 CST"},
		{0, "1970-01-01 08:00:00 +0800 CST"},
		{1, "1970-01-01 08:00:01 +0800 CST"},
		{1649735755, "2022-04-12 11:55:55 +0800 CST"},
	}

	for index, test := range tests {
		c := SetTimezone(PRC).CreateFromTimestamp(test.timestamp)
		assert.Nil(c.Error)
		assert.Equal(test.expected, c.ToString(), "Current test index is "+strconv.Itoa(index))
	}

	for index, test := range tests {
		c := CreateFromTimestamp(test.timestamp, PRC)
		assert.Nil(c.Error)
		assert.Equal(test.expected, c.ToString(), "Current test index is "+strconv.Itoa(index))
	}
}

func TestCarbon_CreateFromTimestampMilli(t *testing.T) {
	assert := assert.New(t)

	tests := []struct {
		timestamp int64
		expected  string
	}{
		{-1, "1970-01-01 07:59:59.999 +0800 CST"},
		{0, "1970-01-01 08:00:00 +0800 CST"},
		{1, "1970-01-01 08:00:00.001 +0800 CST"},
		{1649735755981, "2022-04-12 11:55:55.981 +0800 CST"},
	}

	for index, test := range tests {
		c := SetTimezone(PRC).CreateFromTimestampMilli(test.timestamp)
		assert.Nil(c.Error)
		assert.Equal(test.expected, c.ToString(), "Current test index is "+strconv.Itoa(index))
	}

	for index, test := range tests {
		c := CreateFromTimestampMilli(test.timestamp, PRC)
		assert.Nil(c.Error)
		assert.Equal(test.expected, c.ToString(), "Current test index is "+strconv.Itoa(index))
	}
}

func TestCarbon_CreateFromTimestampMicro(t *testing.T) {
	assert := assert.New(t)

	tests := []struct {
		timestamp int64
		expected  string
	}{
		{-1, "1970-01-01 07:59:59.999999 +0800 CST"},
		{0, "1970-01-01 08:00:00 +0800 CST"},
		{1, "1970-01-01 08:00:00.000001 +0800 CST"},
		{1649735755981566, "2022-04-12 11:55:55.981566 +0800 CST"},
	}

	for index, test := range tests {
		c := SetTimezone(PRC).CreateFromTimestampMicro(test.timestamp)
		assert.Nil(c.Error)
		assert.Equal(test.expected, c.ToString(), "Current test index is "+strconv.Itoa(index))
	}

	for index, test := range tests {
		c := CreateFromTimestampMicro(test.timestamp, PRC)
		assert.Nil(c.Error)
		assert.Equal(test.expected, c.ToString(), "Current test index is "+strconv.Itoa(index))
	}
}

func TestCarbon_CreateFromTimestampNano(t *testing.T) {
	assert := assert.New(t)

	tests := []struct {
		timestamp int64
		expected  string
	}{
		{-1, "1970-01-01 07:59:59.999999999 +0800 CST"},
		{0, "1970-01-01 08:00:00 +0800 CST"},
		{1, "1970-01-01 08:00:00.000000001 +0800 CST"},
		{1649735755981566000, "2022-04-12 11:55:55.981566 +0800 CST"},
	}

	for index, test := range tests {
		c := SetTimezone(PRC).CreateFromTimestampNano(test.timestamp)
		assert.Nil(c.Error)
		assert.Equal(test.expected, c.ToString(), "Current test index is "+strconv.Itoa(index))
	}

	for index, test := range tests {
		c := CreateFromTimestampNano(test.timestamp, PRC)
		assert.Nil(c.Error)
		assert.Equal(test.expected, c.ToString(), "Current test index is "+strconv.Itoa(index))
	}
}

func TestCarbon_CreateFromDateTime(t *testing.T) {
	assert := assert.New(t)

	tests := []struct {
		year, month, day, hour, minute, second int
		expected                               string
	}{
		{2020, 1, 1, 13, 14, 15, "2020-01-01 13:14:15"},
		{2020, 1, 31, 13, 14, 15, "2020-01-31 13:14:15"},
		{2020, 2, 1, 13, 14, 15, "2020-02-01 13:14:15"},
		{2020, 2, 28, 13, 14, 15, "2020-02-28 13:14:15"},
		{2020, 2, 29, 13, 14, 15, "2020-02-29 13:14:15"},
	}

	for index, test := range tests {
		c := SetTimezone(PRC).CreateFromDateTime(test.year, test.month, test.day, test.hour, test.minute, test.second)
		assert.Nil(c.Error)
		assert.Equal(test.expected, c.ToDateTimeString(), "Current test index is "+strconv.Itoa(index))
	}

	for index, test := range tests {
		c := CreateFromDateTime(test.year, test.month, test.day, test.hour, test.minute, test.second, PRC)
		assert.Nil(c.Error)
		assert.Equal(test.expected, c.ToDateTimeString(), "Current test index is "+strconv.Itoa(index))
	}
}

func TestCarbon_CreateFromDateTimeMilli(t *testing.T) {
	assert := assert.New(t)

	tests := []struct {
		year, month, day, hour, minute, second, millisecond int
		expected                                            string
	}{
		{2020, 1, 1, 13, 14, 15, 999, "2020-01-01 13:14:15.999 +0800 CST"},
		{2020, 1, 31, 13, 14, 15, 999, "2020-01-31 13:14:15.999 +0800 CST"},
		{2020, 2, 1, 13, 14, 15, 999, "2020-02-01 13:14:15.999 +0800 CST"},
		{2020, 2, 28, 13, 14, 15, 999, "2020-02-28 13:14:15.999 +0800 CST"},
		{2020, 2, 29, 13, 14, 15, 999, "2020-02-29 13:14:15.999 +0800 CST"},
	}

	for index, test := range tests {
		c := SetTimezone(PRC).CreateFromDateTimeMilli(test.year, test.month, test.day, test.hour, test.minute, test.second, test.millisecond)
		assert.Nil(c.Error)
		assert.Equal(test.expected, c.ToString(), "Current test index is "+strconv.Itoa(index))
	}

	for index, test := range tests {
		c := CreateFromDateTimeMilli(test.year, test.month, test.day, test.hour, test.minute, test.second, test.millisecond, PRC)
		assert.Nil(c.Error)
		assert.Equal(test.expected, c.ToString(), "Current test index is "+strconv.Itoa(index))
	}
}

func TestCarbon_CreateFromDateTimeMicro(t *testing.T) {
	assert := assert.New(t)

	tests := []struct {
		year, month, day, hour, minute, second, microsecond int
		expected                                            string
	}{
		{2020, 1, 1, 13, 14, 15, 999999, "2020-01-01 13:14:15.999999 +0800 CST"},
		{2020, 1, 31, 13, 14, 15, 999999, "2020-01-31 13:14:15.999999 +0800 CST"},
		{2020, 2, 1, 13, 14, 15, 999999, "2020-02-01 13:14:15.999999 +0800 CST"},
		{2020, 2, 28, 13, 14, 15, 999999, "2020-02-28 13:14:15.999999 +0800 CST"},
		{2020, 2, 29, 13, 14, 15, 999999, "2020-02-29 13:14:15.999999 +0800 CST"},
	}

	for index, test := range tests {
		c := SetTimezone(PRC).CreateFromDateTimeMicro(test.year, test.month, test.day, test.hour, test.minute, test.second, test.microsecond)
		assert.Nil(c.Error)
		assert.Equal(test.expected, c.ToString(), "Current test index is "+strconv.Itoa(index))
	}

	for index, test := range tests {
		c := CreateFromDateTimeMicro(test.year, test.month, test.day, test.hour, test.minute, test.second, test.microsecond, PRC)
		assert.Nil(c.Error)
		assert.Equal(test.expected, c.ToString(), "Current test index is "+strconv.Itoa(index))
	}
}

func TestCarbon_CreateFromDateTimeNano(t *testing.T) {
	assert := assert.New(t)

	tests := []struct {
		year, month, day, hour, minute, second, nanosecond int
		expected                                           string
	}{
		{2020, 1, 1, 13, 14, 15, 999999999, "2020-01-01 13:14:15.999999999 +0800 CST"},
		{2020, 1, 31, 13, 14, 15, 999999999, "2020-01-31 13:14:15.999999999 +0800 CST"},
		{2020, 2, 1, 13, 14, 15, 999999999, "2020-02-01 13:14:15.999999999 +0800 CST"},
		{2020, 2, 28, 13, 14, 15, 999999999, "2020-02-28 13:14:15.999999999 +0800 CST"},
		{2020, 2, 29, 13, 14, 15, 999999999, "2020-02-29 13:14:15.999999999 +0800 CST"},
	}

	for index, test := range tests {
		c := SetTimezone(PRC).CreateFromDateTimeNano(test.year, test.month, test.day, test.hour, test.minute, test.second, test.nanosecond)
		assert.Nil(c.Error)
		assert.Equal(test.expected, c.ToString(), "Current test index is "+strconv.Itoa(index))
	}

	for index, test := range tests {
		c := CreateFromDateTimeNano(test.year, test.month, test.day, test.hour, test.minute, test.second, test.nanosecond, PRC)
		assert.Nil(c.Error)
		assert.Equal(test.expected, c.ToString(), "Current test index is "+strconv.Itoa(index))
	}
}

func TestCarbon_CreateFromDate(t *testing.T) {
	assert := assert.New(t)

	tests := []struct {
		year, month, day int
		expected         string
	}{
		{2020, 1, 1, "2020-01-01 00:00:00"},
		{2020, 1, 31, "2020-01-31 00:00:00"},
		{2020, 2, 1, "2020-02-01 00:00:00"},
		{2020, 2, 28, "2020-02-28 00:00:00"},
		{2020, 2, 29, "2020-02-29 00:00:00"},
	}

	for index, test := range tests {
		c := SetTimezone(PRC).CreateFromDate(test.year, test.month, test.day)
		assert.Nil(c.Error)
		assert.Equal(test.expected, c.ToDateTimeString(), "Current test index is "+strconv.Itoa(index))
	}

	for index, test := range tests {
		c := CreateFromDate(test.year, test.month, test.day, PRC)
		assert.Nil(c.Error)
		assert.Equal(test.expected, c.ToDateTimeString(), "Current test index is "+strconv.Itoa(index))
	}
}

func TestCarbon_CreateFromDateMilli(t *testing.T) {
	assert := assert.New(t)

	tests := []struct {
		year, month, day, millisecond int
		expected                      string
	}{
		{2020, 1, 1, 999, "2020-01-01 00:00:00" + ".999"},
		{2020, 1, 31, 999, "2020-01-31 00:00:00" + ".999"},
		{2020, 2, 1, 999, "2020-02-01 00:00:00" + ".999"},
		{2020, 2, 28, 999, "2020-02-28 00:00:00" + ".999"},
		{2020, 2, 29, 999, "2020-02-29 00:00:00" + ".999"},
	}

	for index, test := range tests {
		c := SetTimezone(PRC).CreateFromDateMilli(test.year, test.month, test.day, test.millisecond)
		assert.Nil(c.Error)
		assert.Equal(test.expected, c.ToDateTimeMilliString(), "Current test index is "+strconv.Itoa(index))
	}

	for index, test := range tests {
		c := CreateFromDateMilli(test.year, test.month, test.day, test.millisecond, PRC)
		assert.Nil(c.Error)
		assert.Equal(test.expected, c.ToDateTimeMilliString(), "Current test index is "+strconv.Itoa(index))
	}
}

func TestCarbon_CreateFromDateMicro(t *testing.T) {
	assert := assert.New(t)

	tests := []struct {
		year, month, day, microsecond int
		expected                      string
	}{
		{2020, 1, 1, 999999, "2020-01-01 00:00:00" + ".999999"},
		{2020, 1, 31, 999999, "2020-01-31 00:00:00" + ".999999"},
		{2020, 2, 1, 999999, "2020-02-01 00:00:00" + ".999999"},
		{2020, 2, 28, 999999, "2020-02-28 00:00:00" + ".999999"},
		{2020, 2, 29, 999999, "2020-02-29 00:00:00" + ".999999"},
	}

	for index, test := range tests {
		c := SetTimezone(PRC).CreateFromDateMicro(test.year, test.month, test.day, test.microsecond)
		assert.Nil(c.Error)
		assert.Equal(test.expected, c.ToDateTimeMicroString(), "Current test index is "+strconv.Itoa(index))
	}

	for index, test := range tests {
		c := CreateFromDateMicro(test.year, test.month, test.day, test.microsecond, PRC)
		assert.Nil(c.Error)
		assert.Equal(test.expected, c.ToDateTimeMicroString(), "Current test index is "+strconv.Itoa(index))
	}
}

func TestCarbon_CreateFromDateNano(t *testing.T) {
	assert := assert.New(t)

	tests := []struct {
		year, month, day, nanosecond int
		expected                     string
	}{
		{2020, 1, 1, 999999999, "2020-01-01 00:00:00" + ".999999999"},
		{2020, 1, 31, 999999999, "2020-01-31 00:00:00" + ".999999999"},
		{2020, 2, 1, 999999999, "2020-02-01 00:00:00" + ".999999999"},
		{2020, 2, 28, 999999999, "2020-02-28 00:00:00" + ".999999999"},
		{2020, 2, 29, 999999999, "2020-02-29 00:00:00" + ".999999999"},
	}

	for index, test := range tests {
		c := SetTimezone(PRC).CreateFromDateNano(test.year, test.month, test.day, test.nanosecond)
		assert.Nil(c.Error)
		assert.Equal(test.expected, c.ToDateTimeNanoString(), "Current test index is "+strconv.Itoa(index))
	}

	for index, test := range tests {
		c := CreateFromDateNano(test.year, test.month, test.day, test.nanosecond, PRC)
		assert.Nil(c.Error)
		assert.Equal(test.expected, c.ToDateTimeNanoString(), "Current test index is "+strconv.Itoa(index))
	}
}

func TestCarbon_CreateFromTime(t *testing.T) {
	assert := assert.New(t)

	date := Now(PRC).ToDateString()
	tests := []struct {
		hour, minute, second int
		expected             string
	}{
		{0, 0, 0, date + " 00:00:00"},
		{00, 00, 15, date + " 00:00:15"},
		{00, 14, 15, date + " 00:14:15"},
		{13, 14, 15, date + " 13:14:15"},
	}

	for index, test := range tests {
		c := SetTimezone(PRC).CreateFromTime(test.hour, test.minute, test.second)
		assert.Nil(c.Error)
		assert.Equal(test.expected, c.ToDateTimeString(), "Current test index is "+strconv.Itoa(index))
	}

	for index, test := range tests {
		c := CreateFromTime(test.hour, test.minute, test.second, PRC)
		assert.Nil(c.Error)
		assert.Equal(test.expected, c.ToDateTimeString(), "Current test index is "+strconv.Itoa(index))
	}
}

func TestCarbon_CreateFromTimeMilli(t *testing.T) {
	assert := assert.New(t)

	date := Now(PRC).ToDateString()
	tests := []struct {
		hour, minute, second, millisecond int
		expected                          string
	}{
		{0, 0, 0, 999, date + " 00:00:00.999"},
		{00, 00, 15, 999, date + " 00:00:15.999"},
		{00, 14, 15, 999, date + " 00:14:15.999"},
		{13, 14, 15, 999, date + " 13:14:15.999"},
	}

	for index, test := range tests {
		c := SetTimezone(PRC).CreateFromTimeMilli(test.hour, test.minute, test.second, test.millisecond)
		assert.Nil(c.Error)
		assert.Equal(test.expected, c.ToDateTimeMilliString(), "Current test index is "+strconv.Itoa(index))
	}

	for index, test := range tests {
		c := CreateFromTimeMilli(test.hour, test.minute, test.second, test.millisecond, PRC)
		assert.Nil(c.Error)
		assert.Equal(test.expected, c.ToDateTimeMilliString(), "Current test index is "+strconv.Itoa(index))
	}
}

func TestCarbon_CreateFromTimeMicro(t *testing.T) {
	assert := assert.New(t)

	date := Now(PRC).ToDateString()
	tests := []struct {
		hour, minute, second, microsecond int
		expected                          string
	}{
		{0, 0, 0, 999999, date + " 00:00:00.999999"},
		{00, 00, 15, 999999, date + " 00:00:15.999999"},
		{00, 14, 15, 999999, date + " 00:14:15.999999"},
		{13, 14, 15, 999999, date + " 13:14:15.999999"},
	}

	for index, test := range tests {
		c := SetTimezone(PRC).CreateFromTimeMicro(test.hour, test.minute, test.second, test.microsecond)
		assert.Nil(c.Error)
		assert.Equal(test.expected, c.ToDateTimeMicroString(), "Current test index is "+strconv.Itoa(index))
	}

	for index, test := range tests {
		c := CreateFromTimeMicro(test.hour, test.minute, test.second, test.microsecond, PRC)
		assert.Nil(c.Error)
		assert.Equal(test.expected, c.ToDateTimeMicroString(), "Current test index is "+strconv.Itoa(index))
	}
}

func TestCarbon_CreateFromTimeNano(t *testing.T) {
	assert := assert.New(t)

	date := Now(PRC).ToDateString()
	tests := []struct {
		hour, minute, second, nanosecond int
		expected                         string
	}{
		{0, 0, 0, 999999999, date + " 00:00:00.999999999"},
		{00, 00, 15, 999999999, date + " 00:00:15.999999999"},
		{00, 14, 15, 999999999, date + " 00:14:15.999999999"},
		{13, 14, 15, 999999999, date + " 13:14:15.999999999"},
	}

	for index, test := range tests {
		c := SetTimezone(PRC).CreateFromTimeNano(test.hour, test.minute, test.second, test.nanosecond)
		assert.Nil(c.Error)
		assert.Equal(test.expected, c.ToDateTimeNanoString(), "Current test index is "+strconv.Itoa(index))
	}

	for index, test := range tests {
		c := CreateFromTimeNano(test.hour, test.minute, test.second, test.nanosecond, PRC)
		assert.Nil(c.Error)
		assert.Equal(test.expected, c.ToDateTimeNanoString(), "Current test index is "+strconv.Itoa(index))
	}
}

func TestError_Creator(t *testing.T) {
	year, month, day, hour, minute, second, timestamp, timezone := 2020, 8, 5, 13, 14, 15, int64(1577855655), "xxx"

	c := SetTimezone(timezone)
	assert.NotNil(t, c.CreateFromDateTime(year, month, day, hour, minute, second).Error, "It should catch an exception in CreateFromDateTime()")
	assert.NotNil(t, c.CreateFromDate(year, month, day).Error, "It should catch an exception in CreateFromDate()")
	assert.NotNil(t, c.CreateFromTime(hour, minute, second).Error, "It should catch an exception in CreateFromTime()")
	assert.NotNil(t, c.CreateFromTimestamp(timestamp).Error, "It should catch an exception in CreateFromTime()")
	assert.NotNil(t, c.CreateFromTimestampMilli(timestamp).Error, "It should catch an exception in CreateFromTimestampMilli()")
	assert.NotNil(t, c.CreateFromTimestampMicro(timestamp).Error, "It should catch an exception in CreateFromTimestampMicro()")
	assert.NotNil(t, c.CreateFromTimestampNano(timestamp).Error, "It should catch an exception in CreateFromTimestampNano()")
}