VberAdmin_V4/SourceCode/Zero/VberYue.Zero/Net/Emailing/EmailTemplateProvider.cs

using System.Collections.Concurrent;
using System.Text;

using Abp.Dependency;
using Abp.Extensions;
using Abp.IO.Extensions;
using Abp.Reflection.Extensions;

using VberZero.DomainService.Url;
using VberZero.MultiTenancy;

namespace VberZero.Net.Emailing;

public class EmailTemplateProvider : IEmailTemplateProvider, ISingletonDependency
{
    private readonly IWebUrlService _webUrlService;
    private readonly ITenantCache _tenantCache;
    private readonly ConcurrentDictionary<string, string> _defaultTemplates;

    public EmailTemplateProvider(IWebUrlService webUrlService, ITenantCache tenantCache)
    {
        _webUrlService = webUrlService;
        _tenantCache = tenantCache;
        _defaultTemplates = new ConcurrentDictionary<string, string>();
    }

    public string GetDefaultTemplate(int? tenantId)
    {
        var tenancyKey = tenantId.HasValue ? tenantId.Value.ToString() : "host";

        return _defaultTemplates.GetOrAdd(tenancyKey, _ =>
        {
            using var stream = typeof(EmailTemplateProvider).GetAssembly().GetManifestResourceStream("VzZeroCore.Net.Emailing.EmailTemplates.default.html");
            var bytes = stream.GetAllBytes();
            var template = Encoding.UTF8.GetString(bytes, 3, bytes.Length - 3);
            template = template.Replace("{THIS_YEAR}", DateTime.Now.Year.ToString());
            return template.Replace("{EMAIL_LOGO_URL}", GetTenantLogoUrl(tenantId));
        });
    }

    private string GetTenantLogoUrl(int? tenantId)
    {
        return _webUrlService.GetServerRootAddress().EnsureEndsWith('/') + "img/logo.png";
        //if (!tenantId.HasValue)
        //{
        //    return _webUrlService.GetServerRootAddress().EnsureEndsWith('/') + "img/logo/logo.png";
        //}

        //var tenant = _tenantCache.Get(tenantId.Value);
        //return _webUrlService.GetServerRootAddress(tenant.TenancyName).EnsureEndsWith('/') + "img/logo/" + tenantId.Value+ "/logo.png";
    }
}