package edgeutils

import (
	"testing"

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

func TestIsValidTimestamp(t *testing.T) {
	testCases := []struct {
		name        string
		time        string
		expectedErr string
	}{
		{
			name:        "Test 1: Valid Time",
			time:        "2024-04-25T15:34:12Z",
			expectedErr: "",
		},
		{
			name:        "Test 2: Invalid Time 1",
			time:        "2024-06-T12:13:12Z",
			expectedErr: "is not a valid Timestamp",
		},
		{
			name:        "Test 3: Invalid Time 2",
			time:        "24-04-25T15:34:1Z",
			expectedErr: "is not a valid Timestamp",
		},
	}

	for _, test := range testCases {
		if test.expectedErr == "" {
			err := IsValidTimestamp(test.time)
			assert.NoError(t, err)
		} else {
			err := IsValidTimestamp(test.time)
			assert.ErrorContains(t, err, test.expectedErr)
		}
	}
}

func TestTimeSequenceCheck(t *testing.T) {
	testCases := []struct {
		name        string
		startTime   string
		endTime     string
		expectedErr string
	}{
		{
			name:        "Test 1: Valid Start and End Time",
			startTime:   "2024-04-25T12:34:12Z",
			endTime:     "2024-06-27T15:13:12Z",
			expectedErr: "",
		},
		{
			name:        "Test 2: Valid Start and Invalid End Time",
			startTime:   "2024-06-27T15:13:12Z",
			endTime:     "2024-06-27T12:13:12Z",
			expectedErr: "comes before the start time",
		},
	}

	for _, test := range testCases {
		if test.expectedErr == "" {
			t.Run(test.name, func(t *testing.T) {
				err := TimeSequenceCheck(test.startTime, test.endTime)
				assert.NoError(t, err)
			})
		} else {
			t.Run(test.name, func(t *testing.T) {
				err := TimeSequenceCheck(test.startTime, test.endTime)
				assert.ErrorContains(t, err, test.expectedErr)
			})
		}
	}
}

func TestConvertToRFC3339(t *testing.T) {
	testCases := []struct {
		name        string
		timeVal     string
		expectedOut string
		expectedErr string
	}{
		{
			name:        "Test 1: Valid Time No milliseconds",
			timeVal:     "2024-05-25T08:04:12-04:00",
			expectedOut: "2024-05-25T12:04:12Z",
			expectedErr: "",
		},
		{
			name:        "Test 2: Valid Time with milliseconds",
			timeVal:     "2024-05-25T08:04:12.300-04:00",
			expectedOut: "2024-05-25T12:04:12Z",
			expectedErr: "",
		},
		{
			name:        "Test 3:  Invalid Time with milliseconds",
			timeVal:     "2024-04-25 15:34:12:300",
			expectedErr: "Date Formatting Error",
		},
		{
			name:        "Test 4: Invalid Time no milliseconds",
			timeVal:     "2024-05-25T08:04.12-04:00",
			expectedErr: "Date Formatting Error",
		},
		{
			name:        "Test 5: Invalid Year",
			timeVal:     "204-05-25T08:04:12.300-04:00",
			expectedErr: "Date Formatting Error",
		},
		{
			name:        "Test 6: Invalid Month",
			timeVal:     "2024-13-05-25T08:04:12.300-04:00",
			expectedErr: "Date Formatting Error",
		},
		{
			name:        "Test 7: Invalid day",
			timeVal:     "2024-05-85T08:04:12.300-04:00",
			expectedErr: "Date Formatting Error",
		},
	}

	for _, test := range testCases {
		if test.expectedErr == "" {
			t.Run(test.name, func(t *testing.T) {
				timestamp, err := ConvertToRFC3339(test.timeVal)
				assert.Equal(t, test.expectedOut, timestamp)
				assert.NoError(t, err)
			})
		} else {
			t.Run(test.name, func(t *testing.T) {
				_, err := ConvertToRFC3339(test.timeVal)
				assert.ErrorContains(t, err, test.expectedErr)
			})
		}
	}
}