using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Localization;
using Volo.Abp.Localization;

namespace Sozsoft.Languages.Localization;

public class DatabaseLocalizationResourceContributor : ILocalizationResourceContributor
{
    private LocalizationResourceBase _resource;
    private System.Lazy<IDatabaseResourceLocalizer> _databaseResourceLocalizer;
    private System.Lazy<ILanguageProvider> _languageProvider;

    public bool IsDynamic => false;

    public void Initialize(LocalizationResourceInitializationContext context)
    {
        _resource = context.Resource;
        // ABP calls Initialize while AbpStringLocalizerFactory holds its internal lock.
        // Resolving repositories/caches here can request another IStringLocalizer and
        // re-enter the same lock, preventing Kestrel from ever starting.
        _databaseResourceLocalizer = new System.Lazy<IDatabaseResourceLocalizer>(
            () => context.ServiceProvider.GetRequiredService<IDatabaseResourceLocalizer>());
        _languageProvider = new System.Lazy<ILanguageProvider>(
            () => context.ServiceProvider.GetRequiredService<ILanguageProvider>());
    }

    public LocalizedString GetOrNull(string cultureName, string name)
    {
        return _databaseResourceLocalizer.Value.GetOrNull(_resource, cultureName, name);
    }

    public async Task FillAsync(string cultureName, Dictionary<string, LocalizedString> dictionary)
    {
        await _databaseResourceLocalizer.Value.FillAsync(_resource, cultureName, dictionary);
    }

    public void Fill(string cultureName, Dictionary<string, LocalizedString> dictionary)
    {
        _databaseResourceLocalizer.Value.Fill(_resource, cultureName, dictionary);
    }

    public async Task<IEnumerable<string>> GetSupportedCulturesAsync()
    {
        var langs = await _languageProvider.Value.GetLanguagesAsync();
        return langs.Select(a => a.CultureName).ToList();
    }
}