// Licensed to Elasticsearch B.V. under one or more contributor
// license agreements. See the NOTICE file distributed with
// this work for additional information regarding copyright
// ownership. Elasticsearch B.V. licenses this file to you 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 input

import (
	"errors"

	"github.com/elastic/beats/libbeat/plugin"
)

type inputPlugin struct {
	name    string
	factory Factory
}

const pluginKey = "filebeat.input"

func init() {
	plugin.MustRegisterLoader(pluginKey, func(ifc interface{}) error {
		p, ok := ifc.(inputPlugin)
		if !ok {
			return errors.New("plugin does not match filebeat input plugin type")
		}

		if p.factory != nil {
			if err := Register(p.name, p.factory); err != nil {
				return err
			}
		}

		return nil
	})
}

func Plugin(
	module string,
	factory Factory,
) map[string][]interface{} {
	return plugin.MakePlugin(pluginKey, inputPlugin{module, factory})
}