using System;
using System.Diagnostics;
using System.Threading;
using System.Threading.Tasks;
using Luticate2.Auth.Auth.Business;
using Luticate2.Auth.Auth.Dbo;
using Luticate2.Auth.Utils.Business.Fields;
using Luticate2.Auth.Utils.Business.Pagination;
using Luticate2.Auth.Utils.Business.Serializers.PartialJson;
using Luticate2.Auth.Utils.Dbo.Pagination;
using Microsoft.Extensions.DependencyInjection;
using NClap.Metadata;
using Newtonsoft.Json;

namespace Luticate2.Auth.ConsoleSample.Commands
{
    public class ListCommand : Command
    {
        [PositionalArgument(ArgumentFlags.Optional, Position = 0, Description = "Items type to list")]
        public string ItemType { get; set; }

        [NamedArgument(DefaultValue = "*")]
        public string PartialResponse { get; set; }

        [NamedArgument(DefaultValue = "")]
        public string Filter { get; set; }

        [NamedArgument(DefaultValue = "id:asc")]
        public string OrderBy { get; set; }

        [NamedArgument(DefaultValue = "0")]
        public int Page { get; set; }

        [NamedArgument(DefaultValue = "10")]
        public int PerPage { get; set; }

        [NamedArgument(DefaultValue = "specific")]
        public string OutputType { get; set; }

        public override Task<CommandResult> ExecuteAsync(CancellationToken cancel)
        {
            if (ItemType == null)
            {
                Console.WriteLine("groups");
            }
            else
            {
                var partialResponseResult = LuPartialFieldsParser.Parse(PartialResponse);
                if (!partialResponseResult)
                {
                    partialResponseResult.WriteLineError();
                    return Task.FromResult(CommandResult.UsageError);
                }
                var partialResponse = partialResponseResult.Data;

                var filterResult = LuFilterParser.Parse<LuGroupDbo>(Filter);
                if (!filterResult)
                {
                    filterResult.WriteLineError();
                    return Task.FromResult(CommandResult.UsageError);
                }
                var filter = filterResult.Data;

                var orderByResult = LuOrderByParser.Parse(OrderBy);
                if (!orderByResult)
                {
                    orderByResult.WriteLineError();
                    return Task.FromResult(CommandResult.UsageError);
                }
                var orderBy = orderByResult.Data;

                var business = Program.ServiceProvider.GetService<LuGroupsBusiness>();
                var stopWatch = Stopwatch.StartNew();
                var results = business.Read(partialResponse, new LuPaginatedParamsDbo
                {
                    Filter = filter,
                    OrderBy = orderBy,
                    Page = Page,
                    PerPage = PerPage
                });
                var elapsed = stopWatch.ElapsedMilliseconds;
                if (results)
                {
                    var jsonSettings = new JsonSerializerSettings
                    {
                        Formatting = Formatting.None
                    };
                    Console.WriteLine($"Displaying {Page * PerPage + 1}-{(Page + 1) * PerPage} of {results.Data.Count} ({elapsed} ms)");
                    foreach (var item in results.Data.Data)
                    {
                        if (OutputType == "specific")
                        {
                            Console.WriteLine($"{item.Id} {item.Name ?? "??"}");
                        }
                        else if (OutputType == "json-full")
                        {
                            Console.WriteLine(JsonConvert.SerializeObject(item, jsonSettings));
                        }
                        else if (OutputType == "json-partial")
                        {
                            Console.WriteLine(LuPartialJsonWriter.SerializeObject(item, partialResponse, jsonSettings));
                        }
                    }
                }
                else
                {
                    results.WriteLineError();
                    return Task.FromResult(CommandResult.RuntimeFailure);
                }
            }

            return Task.FromResult(CommandResult.Success);
        }
    }
}