/*
Copyright 2018 The Argoproj Authors.

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 amqp

import (
	"context"
	"fmt"

	aev1 "github.com/argoproj/argo-events/pkg/apis/events/v1alpha1"
)

// ValidateEventSource validates gateway event source
func (listener *EventListener) ValidateEventSource(ctx context.Context) error {
	return validate(&listener.AMQPEventSource)
}

func validate(eventSource *aev1.AMQPEventSource) error {
	if eventSource == nil {
		return aev1.ErrNilEventSource
	}
	if eventSource.URL == "" && eventSource.URLSecret == nil {
		return fmt.Errorf("either url or urlSecret must be specified")
	}
	if eventSource.URL != "" && eventSource.URLSecret != nil {
		return fmt.Errorf("only one of url or urlSecret can be specified")
	}
	if eventSource.RoutingKey == "" {
		return fmt.Errorf("routing key must be specified")
	}
	if eventSource.ExchangeType == "" {
		return fmt.Errorf("exchange type must be specified")
	}
	if eventSource.TLS != nil {
		return aev1.ValidateTLSConfig(eventSource.TLS)
	}
	if eventSource.Auth != nil {
		return aev1.ValidateBasicAuth(eventSource.Auth)
	}
	return nil
}
