//  Copyright (c) 2014 Couchbase, Inc.
//  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 datetime_optional

import (
	"time"

	"github.com/blevesearch/bleve/analysis"
	"github.com/blevesearch/bleve/analysis/datetime_parsers/flexible_go"
	"github.com/blevesearch/bleve/registry"
)

const Name = "dateTimeOptional"

const rfc3339NoTimezone = "2006-01-02T15:04:05"
const rfc3339NoTimezoneNoT = "2006-01-02 15:04:05"
const rfc3339NoTime = "2006-01-02"

var layouts = []string{
	time.RFC3339Nano,
	time.RFC3339,
	rfc3339NoTimezone,
	rfc3339NoTimezoneNoT,
	rfc3339NoTime,
}

func DateTimeParserConstructor(config map[string]interface{}, cache *registry.Cache) (analysis.DateTimeParser, error) {
	return flexible_go.NewFlexibleGoDateTimeParser(layouts), nil
}

func init() {
	registry.RegisterDateTimeParser(Name, DateTimeParserConstructor)
}