using System;
using System.Collections.Generic;
using System.Text;
using System.Threading.Tasks;
using Sozsoft.Sender.Mail;
using Sozsoft.Platform.Data.Seeds;
using Sozsoft.Platform.Extensions;
using Microsoft.AspNetCore.Identity;
using Microsoft.Extensions.Options;
using Microsoft.IdentityModel.Tokens;
using Volo.Abp.Account;
using Volo.Abp.Account.Emailing;
using Volo.Abp.DependencyInjection;
using Volo.Abp.Identity;
using Volo.Abp.ObjectExtending;
using Volo.Abp.Settings;
using Volo.Abp.UI.Navigation.Urls;
using IdentityUser = Volo.Abp.Identity.IdentityUser;

namespace Sozsoft.Platform.Identity;

[Dependency(ReplaceServices = true)]
public class PlatformAccountAppService : AccountAppService, IAccountAppService
{
    private readonly ISettingProvider settingProvider;
    private readonly ISozsoftEmailSender emailSender;
    private readonly IAppUrlProvider appUrlProvider;

    public PlatformAccountAppService(
        IdentityUserManager userManager,
        IIdentityRoleRepository roleRepository,
        IAccountEmailer accountEmailer,
        IdentitySecurityLogManager identitySecurityLogManager,
        IOptions<IdentityOptions> identityOptions,

        ISettingProvider settingProvider,
        ISozsoftEmailSender emailSender,
        IAppUrlProvider appUrlProvider
        ) : base(userManager, roleRepository, accountEmailer, identitySecurityLogManager, identityOptions)
    {
        this.settingProvider = settingProvider;
        this.emailSender = emailSender;
        this.appUrlProvider = appUrlProvider;
    }

    [Captcha]
    public override async Task<IdentityUserDto> RegisterAsync(RegisterDto input)
    {
        await CheckSelfRegistrationAsync();

        await IdentityOptions.SetAsync();

        var user = new IdentityUser(GuidGenerator.Create(), input.UserName, input.EmailAddress, CurrentTenant.Id)
        {
            Name = input.ExtraProperties.GetValueOrDefault(PlatformConsts.AbpIdentity.User.Name)?.ToString(),
            Surname = input.ExtraProperties.GetValueOrDefault(PlatformConsts.AbpIdentity.User.Surname)?.ToString(),
        };

        user.SetIsVerified(false);
        input.MapExtraPropertiesTo(user);

        (await UserManager.CreateAsync(user, input.Password)).CheckErrors();

        await UserManager.SetEmailAsync(user, input.EmailAddress);
        await UserManager.AddDefaultRolesAsync(user);

        var TwoFactorEnabled = await SettingProvider.GetAsync<bool>(PlatformConsts.AbpAccount.TwoFactor.Enabled);
        await UserManager.SetTwoFactorEnabledAsync(user, TwoFactorEnabled);

        // Send Confirmation Code
        await SendConfirmationCodeAsync(user);

        //Send mail to admins
        try
        {
            var SenderName = await settingProvider.GetOrNullAsync(SeedConsts.AbpSettings.Mailing.Default.DefaultFromDisplayName);
            var SenderEmailAddress = await settingProvider.GetOrNullAsync(SeedConsts.AbpSettings.Mailing.Default.DefaultFromAddress);

            var url = await appUrlProvider.GetUrlAsync("MVC", PlatformConsts.Urls.UserDetail);
            var userDetailUrl = $"{url}/{user.Id}";

            var content = $@"My name is: {user.GetFullName()}. 
Email Address: {user.Email} 
User Detail: {userDetailUrl}";

            var recipients = await SettingProvider.GetOrNullAsync(PlatformConsts.AbpSettings.SiteManagement.General.NewMemberNotificationEmails);
            if (!recipients.IsNullOrWhiteSpace())
            {
                await emailSender.QueueEmailAsync(
                    SenderEmailAddress,
                    new KeyValuePair<string, string>(SenderName, SenderEmailAddress),
                    new
                    {
                        user.Email,
                        Name = user.GetFullName()
                    },
                    content,
                    subject: PlatformConsts.AppName + " : New User");
            }
        }
        catch
        { }

        return ObjectMapper.Map<IdentityUser, IdentityUserDto>(user);
    }

    [Captcha]
    public override Task SendPasswordResetCodeAsync(SendPasswordResetCodeDto input)
    {
        return base.SendPasswordResetCodeAsync(input);
    }

    [Captcha]
    public async Task SendExtendLoginRequestAsync(SendExtendLoginRequestInputDto input)
    {
        var user = await UserManager.FindByEmailAsync(input.EmailAddress);
        if (user == null)
        {
            return;
        }

        var userDetailUrl = await appUrlProvider.GetUrlAsync(PlatformConsts.React, PlatformConsts.Urls.UserDetail);
        var content = $@"My name is: {user.GetFullName()}. 
User Detail: {string.Format(userDetailUrl, user.Id)}";

        var recipient = await settingProvider.GetOrNullAsync(PlatformConsts.AbpSettings.SiteManagement.General.TimedLoginEmails);
        if (!recipient.IsNullOrWhiteSpace())
        {
            await emailSender.QueueEmailAsync(
                recipient,
                null,
                null,
                content,
                subject: PlatformConsts.AppName + " : Extend Login Request");
        }

        return;
    }

    [Captcha]
    public async Task SendAccountConfirmationCodeAsync(SendAccountConfirmationCodeInputDto input)
    {
        var user = await UserManager.FindByEmailAsync(input.EmailAddress);
        if (user != null)
            await SendConfirmationCodeAsync(user);
    }

    public async Task<bool> VerifyAccountConfirmationCodeAsync(VerifyAccountConfirmationCodeInputDto input)
    {
        await IdentityOptions.SetAsync();

        var user = await UserManager.FindByIdAsync(input.UserId.ToString());
        if (user == null)
        {
            return false;
        }
        try
        {
            input.Token = Encoding.UTF8.GetString(Base64UrlEncoder.DecodeBytes(input.Token));
        }
        catch
        {
            return false;
        }

        var result = await UserManager.ConfirmEmailAsync(user, input.Token);
        return result.Succeeded;
    }

    private async Task<bool> SendConfirmationCodeAsync(IdentityUser user = null)
    {
        if (user == null && CurrentUser.IsAuthenticated && !CurrentUser.EmailVerified && CurrentUser.Id.HasValue)
            user = await UserManager.GetByIdAsync(CurrentUser.Id.Value);

        if (user == null || user.EmailConfirmed)
            return false;

        var confirmationToken = await UserManager.GenerateEmailConfirmationTokenAsync(user);

        confirmationToken = Base64UrlEncoder.Encode(Encoding.UTF8.GetBytes(confirmationToken));
        //confirmationToken = WebEncoders.Base64UrlEncode(Encoding.UTF8.GetBytes(confirmationToken));
        var url = await appUrlProvider.GetUrlAsync(PlatformConsts.React, PlatformConsts.Urls.EmailConfirmation);
        var callbackUrl = $"{url}/{user.Id}/{confirmationToken}";

        var content = $@"Dear {user.GetFullName()}. Your email address has been registered. 
To validate your account, please complete your profile by clicking (or copy-pasting) the link below 
{callbackUrl}";

        var SenderName = await settingProvider.GetOrNullAsync(SeedConsts.AbpSettings.Mailing.Default.DefaultFromDisplayName);
        var SenderEmailAddress = await settingProvider.GetOrNullAsync(SeedConsts.AbpSettings.Mailing.Default.DefaultFromAddress);

        await emailSender.QueueEmailAsync(
            user.Email,
            new KeyValuePair<string, string>(SenderName, SenderEmailAddress),
            new
            {
                user.Email,
                Name = user.GetFullName(),
                Link = callbackUrl
            },
            content,
            subject: PlatformConsts.AppName + " : User Email Verification");

        return true;
    }
}