using System;
using System.Collections.Generic;
using System.Linq;
using System.Text.Json;
using PoweredSoft.DynamicQuery;
using PoweredSoft.DynamicQuery.Core;

namespace Svrnty.CQRS.DynamicQuery;

public class DynamicQueryFilter
{
    public List<DynamicQueryFilter> Filters { get; set; }
    public bool? And { get; set; }
    public string Type { get; set; }
    public bool? Not { get; set; }
    public string Path { get; set; }
    public object Value { get; set; }

    public string QueryValue
    {
        get
        {
            return null;
        }
        set
        {
            Value = value;
        }
    }

    public bool? CaseInsensitive { get; set; }

    public IFilter ToFilter()
    {
        var type = Enum.Parse<FilterType>(Type);
        if (type == FilterType.Composite)
        {
            var compositeFilter = new CompositeFilter
            {
                And = And,
                Type = FilterType.Composite,
                Filters = Filters?.Select(t => t.ToFilter())?.ToList() ?? new List<IFilter>()
            };
            return compositeFilter;
        }

        object value = Value;
        if (Value is JsonElement jsonElement)
        {
            switch (jsonElement.ValueKind)
            {
                case JsonValueKind.String:
                    value = jsonElement.ToString();
                    break;
                case JsonValueKind.Number:
                    if (jsonElement.ToString().Contains('.'))
                        value = jsonElement.GetDecimal();
                    else if (jsonElement.TryGetInt64(out var convertedValue))
                        value = convertedValue;
                    break;
                case JsonValueKind.True:
                    value = true;
                    break;
                case JsonValueKind.False:
                    value = false;
                    break;
                // TODO: Array support
                default:
                    value = null;
                    break;
            }

        }

        var simpleFilter = new SimpleFilter
        {
            And = And,
            Type = type,
            Not = Not,
            Path = Path,
            Value = value,
            CaseInsensitive = CaseInsensitive,
        };
        return simpleFilter;
    }
}