using Microsoft.Extensions.Configuration;
using System.Text.Json;
using System.Text.Json.Serialization;

namespace View_by_Distance.Metadata.Models.Binder;

public class MetadataConfiguration
{

    public bool? ForceMetadataLastWriteTimeToCreationTime { get; set; }
    public string[]? IgnoreRulesKeyWords { get; set; }
    public int? IntMinValueLength { get; set; }
    public int? Offset { get; set; }
    public bool? PropertiesChangedForMetadata { get; set; }

    public override string ToString()
    {
        string result = JsonSerializer.Serialize(this, BinderMetadataConfigurationSourceGenerationContext.Default.MetadataConfiguration);
        return result;
    }

    private static void PreVerify(IConfigurationRoot configurationRoot, MetadataConfiguration? configuration)
    {
        if (configuration?.ForceMetadataLastWriteTimeToCreationTime is null)
        {
            List<string> paths = [];
            foreach (IConfigurationProvider configurationProvider in configurationRoot.Providers)
            {
                if (configurationProvider is not Microsoft.Extensions.Configuration.Json.JsonConfigurationProvider jsonConfigurationProvider)
                    continue;
                if (jsonConfigurationProvider.Source.FileProvider is not Microsoft.Extensions.FileProviders.PhysicalFileProvider physicalFileProvider)
                    continue;
                paths.Add(physicalFileProvider.Root);
            }
            throw new NotSupportedException($"Not found!{Environment.NewLine}{string.Join(Environment.NewLine, paths.Distinct())}");
        }
    }

    private static void Verify(MetadataConfiguration configuration)
    {
        if (configuration.IntMinValueLength is null || configuration.IntMinValueLength != int.MinValue.ToString().Length) throw new NotSupportedException(nameof(configuration.IgnoreRulesKeyWords));
        if (configuration.IgnoreRulesKeyWords is null || configuration.IgnoreRulesKeyWords.Length == 0) throw new NullReferenceException(nameof(configuration.IgnoreRulesKeyWords));
    }

    private static Shared.Models.MetadataConfiguration Get(MetadataConfiguration? configuration, Shared.Models.ResultConfiguration resultConfiguration)
    {
        Shared.Models.MetadataConfiguration result;
        if (configuration is null) throw new NullReferenceException(nameof(configuration));
        if (configuration.ForceMetadataLastWriteTimeToCreationTime is null) throw new NullReferenceException(nameof(configuration.ForceMetadataLastWriteTimeToCreationTime));
        if (configuration.IntMinValueLength is null) throw new NullReferenceException(nameof(configuration.IntMinValueLength));
        if (configuration.IgnoreRulesKeyWords is null) throw new NullReferenceException(nameof(configuration.IgnoreRulesKeyWords));
        if (configuration.Offset is null) throw new NullReferenceException(nameof(configuration.Offset));
        if (configuration.PropertiesChangedForMetadata is null) throw new NullReferenceException(nameof(configuration.PropertiesChangedForMetadata));
        Verify(configuration);
        result = new(resultConfiguration,
                     configuration.ForceMetadataLastWriteTimeToCreationTime.Value,
                     configuration.IgnoreRulesKeyWords,
                     configuration.IntMinValueLength.Value,
                     configuration.Offset.Value,
                     configuration.PropertiesChangedForMetadata.Value);
        return result;
    }

    public static Shared.Models.MetadataConfiguration Get(IConfigurationRoot configurationRoot, Shared.Models.ResultConfiguration resultConfiguration)
    {
        Shared.Models.MetadataConfiguration result;
        IConfigurationSection configurationSection = configurationRoot.GetSection(nameof(Shared.Models.MetadataConfiguration));
#pragma warning disable IL3050, IL2026
        MetadataConfiguration? configuration = configurationSection.Get<MetadataConfiguration>();
#pragma warning restore IL3050, IL2026
        PreVerify(configurationRoot, configuration);
        result = Get(configuration, resultConfiguration);
        return result;
    }

}

[JsonSourceGenerationOptions(WriteIndented = true)]
[JsonSerializable(typeof(MetadataConfiguration))]
internal partial class BinderMetadataConfigurationSourceGenerationContext : JsonSerializerContext
{
}