using Microsoft.Extensions.Hosting;
using Microsoft.Extensions.Options;
using System;
using System.Threading;
using System.Threading.Tasks;
using Volo.Abp.Localization;

namespace Sanhe.Abp.Localization.Dynamic;

public class DynamicLocalizationInitializeService : BackgroundService
{
    protected ILocalizationStore Store { get; }
    protected AbpLocalizationOptions LocalizationOptions { get; }
    protected AbpLocalizationDynamicOptions DynamicOptions { get; }

    public DynamicLocalizationInitializeService(
        ILocalizationStore store,
        IOptions<AbpLocalizationOptions> localizationOptions,
        IOptions<AbpLocalizationDynamicOptions> dynamicOptions)
    {
        Store = store;
        DynamicOptions = dynamicOptions.Value;
        LocalizationOptions = localizationOptions.Value;
    }

    protected async override Task ExecuteAsync(CancellationToken stoppingToken)
    {
        try
        {
            foreach (var resource in LocalizationOptions.Resources)
            {
                foreach (var contributor in resource.Value.Contributors)
                {
                    if (contributor.GetType().IsAssignableFrom(typeof(DynamicLocalizationResourceContributor)))
                    {
                        var resourceLocalizationDict = await Store
                            .GetLocalizationDictionaryAsync(
                                resource.Value.ResourceName,
                                stoppingToken);
                        DynamicOptions.AddOrUpdate(resource.Value.ResourceName, resourceLocalizationDict);
                    }
                }
            }
        }
        catch (OperationCanceledException) { } // 忽略此异常
    }
}