package compatibility

import (
	"testing"

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

func TestCompare(t *testing.T) {
	testcases := []struct {
		title         string
		operation     Operation
		staticVersion string
		actualVersion string
		err           error
		expected      bool
	}{
		{
			title:         "Test Case 1 - Equal Op (Variant 1)",
			operation:     Equal,
			staticVersion: "0.21",
			actualVersion: "0.21",
			err:           nil,
			expected:      true,
		},
		{
			title:         "Test Case 1 - Equal Op (Variant 2)",
			operation:     Equal,
			staticVersion: "latest",
			actualVersion: "latest",
			err:           nil,
			expected:      true,
		},
		{
			title:         "Test Case 1 - Equal Op (Variant 3)",
			operation:     Equal,
			staticVersion: "0.21",
			actualVersion: "0.19",
			err:           nil,
			expected:      false,
		},
		{
			title:         "Test Case 1 - Equal Op (Variant 4)",
			operation:     Equal,
			staticVersion: "",
			actualVersion: "0.19",
			err:           ErrStaticVersionRequired,
			expected:      false,
		},
		{
			title:         "Test Case 1 - Equal Op (Variant 4)",
			operation:     Equal,
			staticVersion: "latest",
			actualVersion: "",
			err:           ErrActualVersionRequired,
			expected:      false,
		},
		{
			title:         "Test Case 2 - LessThan Op (Variant 1)",
			operation:     LessThan,
			staticVersion: "latest",
			actualVersion: "0.20",
			err:           nil,
			expected:      false,
		},
		{
			title:         "Test Case 2 - LessThan Op (Variant 2)",
			operation:     LessThan,
			staticVersion: "0.19",
			actualVersion: "0.20",
			err:           nil,
			expected:      true,
		},
		{
			title:         "Test Case 2 - LessThan Op (Variant 3)",
			operation:     LessThan,
			staticVersion: "0.21",
			actualVersion: "0.20",
			err:           nil,
			expected:      false,
		},
		{
			title:         "Test Case 2 - LessThan Op (Variant 4)",
			operation:     LessThan,
			staticVersion: "0.21",
			actualVersion: "0.21",
			err:           nil,
			expected:      false,
		},
		{
			title:         "Test Case 3 - GreaterThan Op (Variant 1)",
			operation:     GreaterThan,
			staticVersion: "0.21",
			actualVersion: "0.20",
			err:           nil,
			expected:      true,
		},
		{
			title:         "Test Case 3 - GreaterThan Op (Variant 2)",
			operation:     GreaterThan,
			staticVersion: "latest",
			actualVersion: "0.20",
			err:           nil,
			expected:      true,
		},
		{
			title:         "Test Case 3 - GreaterThan Op (Variant 3)",
			operation:     GreaterThan,
			staticVersion: "0.20",
			actualVersion: "latest",
			err:           nil,
			expected:      false,
		},
		{
			title:         "Test Case 3 - GreaterThan Op (Variant 4)",
			operation:     GreaterThan,
			staticVersion: "0.20",
			actualVersion: "0.20",
			err:           nil,
			expected:      false,
		},
		{
			title:         "Test Case 4 - LessThanOrEqual Op (Variant 1)",
			operation:     LessThanOrEqual,
			staticVersion: "latest",
			actualVersion: "0.20",
			err:           nil,
			expected:      false,
		},
		{
			title:         "Test Case 4 - LessThanOrEqual Op (Variant 2)",
			operation:     LessThanOrEqual,
			staticVersion: "0.19",
			actualVersion: "0.20",
			err:           nil,
			expected:      true,
		},
		{
			title:         "Test Case 4 - LessThanOrEqual Op (Variant 3)",
			operation:     LessThanOrEqual,
			staticVersion: "latest",
			actualVersion: "latest",
			err:           nil,
			expected:      true,
		},
		{
			title:         "Test Case 4 - LessThanOrEqual Op (Variant 4)",
			operation:     LessThanOrEqual,
			staticVersion: "0.20",
			actualVersion: "0.20",
			err:           nil,
			expected:      true,
		},
		{
			title:         "Test Case 4 - LessThanOrEqual Op (Variant 5)",
			operation:     LessThanOrEqual,
			staticVersion: "0.21",
			actualVersion: "0.20",
			err:           nil,
			expected:      false,
		},
		{
			title:         "Test Case 5 - GreaterThanOrEqual Op (Variant 1)",
			operation:     GreaterThanOrEqual,
			staticVersion: "latest",
			actualVersion: "0.20",
			err:           nil,
			expected:      true,
		},
		{
			title:         "Test Case 5 - GreaterThanOrEqual Op (Variant 1)",
			operation:     GreaterThanOrEqual,
			staticVersion: "0.19",
			actualVersion: "0.20",
			err:           nil,
			expected:      false,
		},
		{
			title:         "Test Case 5 - GreaterThanOrEqual Op (Variant 1)",
			operation:     GreaterThanOrEqual,
			staticVersion: "latest",
			actualVersion: "latest",
			err:           nil,
			expected:      true,
		},
		{
			title:         "Test Case 5 - GreaterThanOrEqual Op (Variant 1)",
			operation:     GreaterThanOrEqual,
			staticVersion: "0.20",
			actualVersion: "0.20",
			err:           nil,
			expected:      true,
		},
		{
			title:         "Test Case 5 - GreaterThanOrEqual Op (Variant 1)",
			operation:     GreaterThanOrEqual,
			staticVersion: "0.21",
			actualVersion: "0.20",
			err:           nil,
			expected:      true,
		},
	}
	for _, testcase := range testcases {
		t.Run(testcase.title, func(t *testing.T) {
			t.Parallel()
			res, err := Compare(testcase.operation, testcase.staticVersion, testcase.actualVersion)
			if err != nil {
				assert.ErrorIs(t, err, testcase.err)
			} else {
				assert.Equal(t, testcase.expected, res)
			}
		})
	}
}