using KonSoft.InternalGateway.Aggregations.Base;
using Volo.Abp.AspNetCore.Mvc.ApplicationConfigurations;
using Volo.Abp.DependencyInjection;

namespace KonSoft.InternalGateway.Aggregations.ApplicationConfiguration;

public class AppConfigurationAggregation : AggregateServiceBase<ApplicationConfigurationDto>,
    IAppConfigurationAggregation, ITransientDependency
{
    public string AppConfigRouteName => "EshopOnAbpApplicationConfiguration";
    public string AppConfigEndpoint => "api/abp/application-configuration";

    protected IAppConfigurationRemoteService AppConfigurationRemoteService { get; }

    public AppConfigurationAggregation(
        IAppConfigurationRemoteService appConfigurationRemoteService) : base(
        appConfigurationRemoteService)
    {
        AppConfigurationRemoteService = appConfigurationRemoteService;
    }

    public async Task<ApplicationConfigurationDto> GetAppConfigurationAsync(AppConfigurationRequest input)
    {
        var remoteAppConfigurationResults =
            await AppConfigurationRemoteService.GetMultipleAsync(input.Endpoints);

        //merge only application configuration settings data
        var mergedResult = MergeAppConfigurationSettingsData(remoteAppConfigurationResults);

        //return result
        return mergedResult;
    }

    private static ApplicationConfigurationDto MergeAppConfigurationSettingsData(
        IDictionary<string, ApplicationConfigurationDto> appConfigurations)
    {
        var appConfigurationDto = CreateInitialAppConfigDto(appConfigurations);

        foreach (var (_, appConfig) in appConfigurations)
        {
            foreach (var resource in appConfig.Setting.Values)
            {
                appConfigurationDto.Setting.Values.TryAdd(resource.Key, resource.Value);
            }
        }

        return appConfigurationDto;
    }

    /// <summary>
    /// Checks "Administration" clusterId to set the initial data from the AdministrationService.
    /// Otherwise uses the first available service for the initial application configuration data 
    /// </summary>
    /// <param name="appConfigurations"></param>
    /// <returns></returns>
    private static ApplicationConfigurationDto CreateInitialAppConfigDto(
        IDictionary<string, ApplicationConfigurationDto> appConfigurations
    )
    {
        if (appConfigurations.Count == 0)
        {
            return new ApplicationConfigurationDto();
        }

        if (appConfigurations.TryGetValue("Administration_AppConfig", out var administrationServiceData))
        {
            return MapServiceData(administrationServiceData);
        }

        return MapServiceData(appConfigurations.First().Value);
    }

    private static ApplicationConfigurationDto MapServiceData(ApplicationConfigurationDto appConfiguration)
    {
        return new ApplicationConfigurationDto
        {
            Localization = appConfiguration.Localization,
            Auth = appConfiguration.Auth,
            Clock = appConfiguration.Clock,
            Setting = appConfiguration.Setting,
            Features = appConfiguration.Features,
            Timing = appConfiguration.Timing,
            CurrentTenant = appConfiguration.CurrentTenant,
            CurrentUser = appConfiguration.CurrentUser,
            ExtraProperties = appConfiguration.ExtraProperties,
            GlobalFeatures = appConfiguration.GlobalFeatures,
            MultiTenancy = appConfiguration.MultiTenancy,
            ObjectExtensions = appConfiguration.ObjectExtensions
        };
    }
}