// Copyright © 2018 Banzai Cloud
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

package ce

import (
	ce "github.com/cloudevents/sdk-go/v02"
	"github.com/spf13/cast"
)

// Event describes a wrapped CloudEvent
type Event struct {
	ce.Event
}

// GetExtensions gets extention values by `eventType`
func (e Event) GetExtensions() map[string]string {
	t, ok := e.GetString("eventType")
	if !ok {
		return nil
	}

	switch t {
	case "prometheus":
		return e.getExtensionsForPrometheusAlert()
	}

	return nil
}

func (e Event) getExtensionsForPrometheusAlert() map[string]string {
	if l, ok := e.Get("labels"); ok {
		return cast.ToStringMapString(l)
	}

	return nil
}
