package conversion

import (
	"k8s.io/apimachinery/pkg/conversion"
	"k8s.io/utils/ptr"

	dashv0 "github.com/grafana/grafana/apps/dashboard/pkg/apis/dashboard/v0alpha1"
	dashv1 "github.com/grafana/grafana/apps/dashboard/pkg/apis/dashboard/v1beta1"
	dashv2alpha1 "github.com/grafana/grafana/apps/dashboard/pkg/apis/dashboard/v2alpha1"
	dashv2beta1 "github.com/grafana/grafana/apps/dashboard/pkg/apis/dashboard/v2beta1"
)

func Convert_V2alpha1_to_V0(in *dashv2alpha1.Dashboard, out *dashv0.Dashboard, scope conversion.Scope) error {
	out.ObjectMeta = in.ObjectMeta

	// TODO: implement V2 to V0 conversion

	out.Status = dashv0.DashboardStatus{
		Conversion: &dashv0.DashboardConversionStatus{
			StoredVersion: ptr.To(dashv2alpha1.VERSION),
			Failed:        true,
			Error:         ptr.To("backend conversion not yet implemented"),
		},
	}

	return nil
}

func Convert_V2alpha1_to_V1(in *dashv2alpha1.Dashboard, out *dashv1.Dashboard, scope conversion.Scope) error {
	out.ObjectMeta = in.ObjectMeta

	// TODO: implement V2 to V1 conversion

	out.Status = dashv1.DashboardStatus{
		Conversion: &dashv1.DashboardConversionStatus{
			StoredVersion: ptr.To(dashv2alpha1.VERSION),
			Failed:        true,
			Error:         ptr.To("backend conversion not yet implemented"),
		},
	}

	return nil
}

func Convert_V2alpha1_to_V2beta1(in *dashv2alpha1.Dashboard, out *dashv2beta1.Dashboard, scope conversion.Scope) error {
	out.ObjectMeta = in.ObjectMeta

	// Convert the spec
	if err := ConvertDashboard_V2alpha1_to_V2beta1(in, out, scope); err != nil {
		out.Status = dashv2beta1.DashboardStatus{
			Conversion: &dashv2beta1.DashboardConversionStatus{
				StoredVersion: ptr.To(dashv2alpha1.VERSION),
				Failed:        true,
				Error:         ptr.To(err.Error()),
			},
		}

		return NewConversionError(err.Error(), "v2alpha1", "v2beta1", "ConvertDashboard_V2alpha1_to_V2beta1")
	}

	// Set successful conversion status
	out.Status = dashv2beta1.DashboardStatus{
		Conversion: &dashv2beta1.DashboardConversionStatus{
			StoredVersion: ptr.To(dashv2alpha1.VERSION),
			Failed:        false,
		},
	}

	return nil
}

func Convert_V2beta1_to_V0(in *dashv2beta1.Dashboard, out *dashv0.Dashboard, scope conversion.Scope) error {
	out.ObjectMeta = in.ObjectMeta

	// TODO: implement v2beta1 to V0 conversion

	out.Status = dashv0.DashboardStatus{
		Conversion: &dashv0.DashboardConversionStatus{
			StoredVersion: ptr.To(dashv2beta1.VERSION),
			Failed:        true,
			Error:         ptr.To("backend conversion not yet implemented"),
		},
	}

	return nil
}

func Convert_V2beta1_to_V1(in *dashv2beta1.Dashboard, out *dashv1.Dashboard, scope conversion.Scope) error {
	out.ObjectMeta = in.ObjectMeta

	// TODO: implement v2beta1 to V1 conversion

	out.Status = dashv1.DashboardStatus{
		Conversion: &dashv1.DashboardConversionStatus{
			StoredVersion: ptr.To(dashv2beta1.VERSION),
			Failed:        true,
			Error:         ptr.To("backend conversion not yet implemented"),
		},
	}

	return nil
}

func Convert_V2beta1_to_V2alpha1(in *dashv2beta1.Dashboard, out *dashv2alpha1.Dashboard, scope conversion.Scope) error {
	out.ObjectMeta = in.ObjectMeta

	// TODO: implement v2beta1 to V2alpha1 conversion

	out.Status = dashv2alpha1.DashboardStatus{
		Conversion: &dashv2alpha1.DashboardConversionStatus{
			StoredVersion: ptr.To(dashv2beta1.VERSION),
			Failed:        true,
			Error:         ptr.To("backend conversion not yet implemented"),
		},
	}

	return nil
}