using Comal.Classes;
using InABox.Core;
using InABox.Poster.MYOB;
using MYOB.AccountRight.SDK.Contracts.Version2;
using MYOB.AccountRight.SDK.Services;
using MYOB.AccountRight.SDK.Services.GeneralLedger;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using MYOBBaseEntity = MYOB.AccountRight.SDK.Contracts.Version2.BaseEntity;
using MYOBTaxCode = MYOB.AccountRight.SDK.Contracts.Version2.GeneralLedger.TaxCode;

namespace PRS.Shared.Posters.MYOB;

public static class PRSMYOBPosterUtils
{
    public class QueryResult<T> : Result<PagedCollection<T>, Exception>
    {
        public QueryResult(PagedCollection<T> value) : base(value)
        {
        }

        public QueryResult(Exception error) : base(error)
        {
        }

        public static QueryResult<T> Ok(PagedCollection<T> collection) => new QueryResult<T>(collection);

        public static QueryResult<T> Error(Exception e) => new QueryResult<T>(e);
    }

    public class GetResult<T> : Result<T, Exception>
    {
        public GetResult(T value) : base(value)
        {
        }

        public GetResult(Exception error) : base(error)
        {
        }

        public static GetResult<T> Ok(T value) => new GetResult<T>(value);

        public static GetResult<T> Error(Exception e) => new GetResult<T>(e);
    }

    public static Result<PagedCollection<T>, Exception> Query<T>(
        this MutableService<T> service, MYOBConnectionData data,
        Filter<T>? filter,
        int? top = null, int? skip = null
    )
        where T : MYOBBaseEntity
    {
        var queries = new List<string>();
        if(filter is not null)
        {
            queries.Add($"$filter={Uri.EscapeDataString(filter.AsOData())}");
        }
        if (top.HasValue)
        {
            queries.Add($"$top={top.Value}");
        }
        if (skip.HasValue)
        {
            queries.Add($"$skip={skip.Value}");
        }

        try
        {
            var values = service.GetRange(data.CompanyFile, string.Join('&', queries), data.CompanyFileCredentials);
            return QueryResult<T>.Ok(values);
        }
        catch(Exception e)
        {
            return QueryResult<T>.Error(e);
        }
    }

    public static GetResult<T> Get<T>(this MutableService<T> service, MYOBConnectionData data, Guid id)
        where T : MYOBBaseEntity
    {
        try
        {
            var value = service.Get(data.CompanyFile, id, data.CompanyFileCredentials);
            return GetResult<T>.Ok(value);
        }
        catch(Exception e)
        {
            return GetResult<T>.Error(e);
        }
    }

    public static Result<Guid?, Exception> GetMYOBTaxCodeUID(this MYOBConnectionData data, string code)
    {
        var service = new TaxCodeService(data.Configuration, null, data.AuthKey);
        var result = service.Query(data, new Filter<MYOBTaxCode>(x => x.Code).IsEqualTo(code), top: 1);
        if(!result.Get(out var myobCodes, out var error))
        {
            return Result.Error<Guid?, Exception>(error);
        }
        if(myobCodes.Count == 0)
        {
            return Result.Ok<Guid?, Exception>(Guid.Empty);
        }
        return Result.Ok<Guid?, Exception>(myobCodes.Items[0].UID);
    }

    public static Result<Guid?, Exception> GetMYOBTaxCodeUID(this MYOBConnectionData data, ITaxCode code)
    {
        if(Guid.TryParse(code.PostedReference, out var id))
        {
            return Result.Ok<Guid?, Exception>(id);
        }
        return GetMYOBTaxCodeUID(data, code.Code);
    }
}