package ports

import (
	"testing"
	"time"

	"galaxy/gamemaster/internal/domain/engineversion"

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

// fixedNow returns a stable wall-clock used by the input-validation
// fixtures. Adapters use the value verbatim to refresh the `updated_at`
// column.
func fixedNow() time.Time {
	return time.Date(2026, time.April, 27, 12, 0, 0, 0, time.UTC)
}

func TestUpdateEngineVersionInputValidateHappy(t *testing.T) {
	imageRef := "ghcr.io/galaxy/game:v1.2.4"
	input := UpdateEngineVersionInput{
		Version:  "v1.2.3",
		ImageRef: &imageRef,
		Now:      fixedNow(),
	}
	require.NoError(t, input.Validate())
}

func TestUpdateEngineVersionInputValidateAcceptsStatusOnly(t *testing.T) {
	status := engineversion.StatusDeprecated
	input := UpdateEngineVersionInput{
		Version: "v1.2.3",
		Status:  &status,
		Now:     fixedNow(),
	}
	assert.NoError(t, input.Validate())
}

func TestUpdateEngineVersionInputValidateAcceptsOptionsOnly(t *testing.T) {
	options := []byte(`{"max_planets":120}`)
	input := UpdateEngineVersionInput{
		Version: "v1.2.3",
		Options: &options,
		Now:     fixedNow(),
	}
	assert.NoError(t, input.Validate())
}

func TestUpdateEngineVersionInputValidateRejects(t *testing.T) {
	emptyImage := ""
	imageRef := "ghcr.io/galaxy/game:v1.2.4"
	unknownStatus := engineversion.Status("exotic")

	tests := []struct {
		name  string
		input UpdateEngineVersionInput
	}{
		{
			name: "empty version",
			input: UpdateEngineVersionInput{
				Version:  "",
				ImageRef: &imageRef,
				Now:      fixedNow(),
			},
		},
		{
			name:  "no fields set",
			input: UpdateEngineVersionInput{Version: "v1.2.3", Now: fixedNow()},
		},
		{
			name: "empty image ref pointer",
			input: UpdateEngineVersionInput{
				Version:  "v1.2.3",
				ImageRef: &emptyImage,
				Now:      fixedNow(),
			},
		},
		{
			name: "unknown status pointer",
			input: UpdateEngineVersionInput{
				Version: "v1.2.3",
				Status:  &unknownStatus,
				Now:     fixedNow(),
			},
		},
		{
			name: "zero now",
			input: UpdateEngineVersionInput{
				Version:  "v1.2.3",
				ImageRef: &imageRef,
			},
		},
	}

	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			assert.Error(t, tt.input.Validate())
		})
	}
}