using System.Net.Mail;
using System.Text;
using System.Web;

using Abp.Configuration;
using Abp.Domain.Uow;
using Abp.Net.Mail;
using Abp.Runtime.Security;
using Abp.UI;

using VberZero.Configuration;
using VberZero.DomainService;

namespace VberZero.Net.Emailing;

public class EmailerBase : VzDomainServiceBase
{
    public EmailerBase(IEmailTemplateProvider emailTemplateProvider, IEmailSender emailSender, ICurrentUnitOfWorkProvider unitOfWorkProvider, IUnitOfWorkManager unitOfWorkManager, ISettingManager settingManager, IAppConfigurationAccessor appConfigurationAccessor)
    {
        EmailTemplateProvider = emailTemplateProvider;
        EmailSender = emailSender;
        UnitOfWorkProvider = unitOfWorkProvider;
        Configuration = appConfigurationAccessor.Configuration;
        UnitOfWorkManager = unitOfWorkManager;
        SettingManager = settingManager;
    }

    protected virtual string EmailButtonStyle => "padding-left: 30px; padding-right: 30px; padding-top: 12px; padding-bottom: 12px; color: #ffffff; background-color: #00bb77; font-size: 14pt; text-decoration: none;";
    private const string LogoImageUrl = "data:image/png;base64,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";
    private const string LogoImageStyle = "display: block; width: 50px; height: 50px; float: left;";
    protected virtual string EmailButtonColor => "#00bb77";
    protected IEmailTemplateProvider EmailTemplateProvider { get; }
    protected IEmailSender EmailSender { get; }
    protected ICurrentUnitOfWorkProvider UnitOfWorkProvider { get; }
    protected IConfigurationRoot Configuration { get; }

    protected virtual StringBuilder GetTitleAndSubTitle(int? tenantId, string title, string subTitle, string logoImgUrl = null, string logoImgStyle = null)
    {
        var emailTemplate = new StringBuilder(EmailTemplateProvider.GetDefaultTemplate(tenantId));
        logoImgUrl ??= LogoImageUrl;
        logoImgStyle ??= LogoImageStyle;
        emailTemplate.Replace("{EMAIL_LOGO_URL}", logoImgUrl);
        emailTemplate.Replace("{EMAIL_LOGO_STYLE}", logoImgStyle);
        emailTemplate.Replace("{EMAIL_TITLE}", title);
        emailTemplate.Replace("{EMAIL_SUB_TITLE}", subTitle);

        return emailTemplate;
    }

    protected virtual async Task ReplaceBodyAndSend(string emailAddress, string subject, StringBuilder emailTemplate, StringBuilder mailMessage)
    {
        emailTemplate.Replace("{EMAIL_BODY}", mailMessage.ToString());
        await EmailSender.SendAsync(new MailMessage
        {
            To = { emailAddress },
            Subject = subject,
            Body = emailTemplate.ToString(),
            IsBodyHtml = true
        });
    }

    /// <summary>
    /// Returns link with encrypted parameters
    /// </summary>
    /// <param name="link"></param>
    /// <param name="encrptedParameterName"></param>
    /// <returns></returns>
    protected virtual string EncryptQueryParameters(string link, string encrptedParameterName = "c")
    {
        if (!link.Contains("?"))
        {
            return link;
        }

        var basePath = link.Substring(0, link.IndexOf('?'));
        var query = link.Substring(link.IndexOf('?')).TrimStart('?');

        return basePath + "?" + encrptedParameterName + "=" + HttpUtility.UrlEncode(SimpleStringCipher.Instance.Encrypt(query));
    }

    protected virtual async Task CheckMailSettingsEmptyOrNull()
    {
#if R
            return;
#endif
        if (
            string.IsNullOrEmpty((await SettingManager.GetSettingValueAsync(EmailSettingNames.DefaultFromAddress))) || string.IsNullOrEmpty((await SettingManager.GetSettingValueAsync(EmailSettingNames.Smtp.Host)))
        )
        {
            throw new UserFriendlyException(L("SMTPSettingsNotProvidedWarningText"));
        }

        if ((await SettingManager.GetSettingValueAsync<bool>(EmailSettingNames.Smtp.UseDefaultCredentials)))
        {
            return;
        }

        if (
            string.IsNullOrEmpty((await SettingManager.GetSettingValueAsync(EmailSettingNames.Smtp.UserName))) ||
            string.IsNullOrEmpty((await SettingManager.GetSettingValueAsync(EmailSettingNames.Smtp.Password)))
        )
        {
            throw new UserFriendlyException(L("SMTPSettingsNotProvidedWarningText"));
        }
    }
}