﻿#region license
// Copyright (c) 2007-2010 Mauricio Scheffer
// 
// 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.
#endregion

using System;
using System.Collections.Generic;
using System.Globalization;
using System.Xml.Linq;

namespace SolrNet.Impl {
    /// <summary>
    /// Serializes a dictionary document
    /// </summary>
    public class SolrDictionarySerializer : ISolrDocumentSerializer<Dictionary<string, object>> {
        private readonly ISolrFieldSerializer serializer;

        public SolrDictionarySerializer(ISolrFieldSerializer serializer) {
            this.serializer = serializer;
        }

        /// <inheritdoc />
        public XElement Serialize(Dictionary<string, object> doc, double? boost) {
            if (doc == null)
                throw new ArgumentNullException("doc");
            var docNode = new XElement("doc");
            if (boost.HasValue) {
                var boostAttr = new XAttribute("boost", boost.Value.ToString(CultureInfo.InvariantCulture.NumberFormat));
                docNode.Add(boostAttr);
            }
            foreach (var kv in doc) {
                var nodes = serializer.Serialize(kv.Value);
                foreach (var n in nodes) {
                    var value = SolrDocumentSerializer<object>.RemoveControlCharacters(n.FieldValue);
                    if (value != null) {
                        var fieldNode = new XElement("field", new XAttribute("name", kv.Key), value);
                        docNode.Add(fieldNode);
                    }
                }
            }
            return docNode;
        }
    }
}
