// ==========================================================================
//  Squidex Headless CMS
// ==========================================================================
//  Copyright (c) Squidex UG (haftungsbeschraenkt)
//  All rights reserved. Licensed under the MIT license.
// ==========================================================================

using NetTopologySuite.Geometries;
using Squidex.Domain.Apps.Entities.Contents.Text;

namespace Squidex.Extensions.Text.ElasticSearch
{
    public static class CommandFactory
    {
        public static void CreateCommands(IndexCommand command, List<object> args, string indexName)
        {
            switch (command)
            {
                case UpsertIndexEntry upsert:
                    UpsertEntry(upsert, args, indexName);
                    break;
                case UpdateIndexEntry update:
                    UpdateEntry(update, args, indexName);
                    break;
                case DeleteIndexEntry delete:
                    DeleteEntry(delete, args, indexName);
                    break;
            }
        }

        private static void UpsertEntry(UpsertIndexEntry upsert, List<object> args, string indexName)
        {
            var geoField = string.Empty;
            var geoObject = (object)null;

            if (upsert.GeoObjects != null)
            {
                foreach (var (key, value) in upsert.GeoObjects)
                {
                    if (value is Point point)
                    {
                        geoField = key;
                        geoObject = new
                        {
                            lat = point.Coordinate.X,
                            lon = point.Coordinate.Y
                        };
                        break;
                    }
                }
            }

            if (upsert.Texts != null || geoObject != null)
            {
                args.Add(new
                {
                    index = new
                    {
                        _id = upsert.DocId,
                        _index = indexName
                    }
                });

                var texts = new Dictionary<string, string>();

                foreach (var (key, value) in upsert.Texts)
                {
                    var text = value;

                    var languageCode = ElasticSearchIndexDefinition.GetFieldName(key);

                    if (texts.TryGetValue(languageCode, out var existing))
                    {
                        text = $"{existing} {value}";
                    }

                    texts[languageCode] = text;
                }

                args.Add(new
                {
                    appId = upsert.AppId.Id.ToString(),
                    appName = upsert.AppId.Name,
                    contentId = upsert.ContentId.ToString(),
                    schemaId = upsert.SchemaId.Id.ToString(),
                    schemaName = upsert.SchemaId.Name,
                    serveAll = upsert.ServeAll,
                    servePublished = upsert.ServePublished,
                    texts,
                    geoField,
                    geoObject
                });
            }
        }

        private static void UpdateEntry(UpdateIndexEntry update, List<object> args, string indexName)
        {
            args.Add(new
            {
                update = new
                {
                    _id = update.DocId,
                    _index = indexName
                }
            });

            args.Add(new
            {
                doc = new
                {
                    serveAll = update.ServeAll,
                    servePublished = update.ServePublished
                }
            });
        }

        private static void DeleteEntry(DeleteIndexEntry delete, List<object> args, string indexName)
        {
            args.Add(new
            {
                delete = new
                {
                    _id = delete.DocId,
                    _index = indexName
                }
            });
        }
    }
}