using System.Reflection;
using Bit.Core.Entities;
using Bit.Core.Entities.Provider;
using Bit.Core.Models.Business;
using Bit.Core.Services;
using Bit.Core.Settings;
using Microsoft.Extensions.Logging;
using NSubstitute;
using Xunit;

namespace Bit.Core.Test.Services;

public class HandlebarsMailServiceTests
{
    private readonly HandlebarsMailService _sut;

    private readonly GlobalSettings _globalSettings;
    private readonly IMailDeliveryService _mailDeliveryService;
    private readonly IMailEnqueuingService _mailEnqueuingService;

    public HandlebarsMailServiceTests()
    {
        _globalSettings = new GlobalSettings();
        _mailDeliveryService = Substitute.For<IMailDeliveryService>();
        _mailEnqueuingService = Substitute.For<IMailEnqueuingService>();

        _sut = new HandlebarsMailService(
            _globalSettings,
            _mailDeliveryService,
            _mailEnqueuingService
        );
    }

    [Fact(Skip = "For local development")]
    public async Task SendAllEmails()
    {
        // This test is only opt in and is more for development purposes.
        // This will send all emails to the test email address so that they can be viewed.
        var namedParameters = new Dictionary<(string, Type), object>
        {
            // TODO: Swith to use env variable
            { ("email", typeof(string)), "test@bitwarden.com" },
            { ("user", typeof(User)), new User
            {
                Id = Guid.NewGuid(),
                Email = "test@bitwarden.com",
            }},
            { ("userId", typeof(Guid)), Guid.NewGuid() },
            { ("token", typeof(string)), "test_token" },
            { ("fromEmail", typeof(string)), "test@bitwarden.com" },
            { ("toEmail", typeof(string)), "test@bitwarden.com" },
            { ("newEmailAddress", typeof(string)), "test@bitwarden.com" },
            { ("hint", typeof(string)), "Test Hint" },
            { ("organizationName", typeof(string)), "Test Organization Name" },
            { ("orgUser", typeof(OrganizationUser)), new OrganizationUser
            {
                Id = Guid.NewGuid(),
                Email = "test@bitwarden.com",
                OrganizationId = Guid.NewGuid(),

            }},
            { ("token", typeof(ExpiringToken)), new ExpiringToken("test_token", DateTime.UtcNow.AddDays(1))},
            { ("organization", typeof(Organization)), new Organization
            {
                Id = Guid.NewGuid(),
                Name = "Test Organization Name",
                Seats = 5
            }},
            { ("initialSeatCount", typeof(int)), 5},
            { ("ownerEmails", typeof(IEnumerable<string>)), new [] { "test@bitwarden.com" }},
            { ("maxSeatCount", typeof(int)), 5 },
            { ("userIdentifier", typeof(string)), "test_user" },
            { ("adminEmails", typeof(IEnumerable<string>)), new [] { "test@bitwarden.com" }},
            { ("returnUrl", typeof(string)), "https://bitwarden.com/" },
            { ("amount", typeof(decimal)), 1.00M },
            { ("dueDate", typeof(DateTime)), DateTime.UtcNow.AddDays(1) },
            { ("items", typeof(List<string>)), new List<string> { "test@bitwarden.com" }},
            { ("mentionInvoices", typeof(bool)), true },
            { ("emails", typeof(IEnumerable<string>)), new [] { "test@bitwarden.com" }},
            { ("deviceType", typeof(string)), "Mobile" },
            { ("timestamp", typeof(DateTime)), DateTime.UtcNow.AddDays(1)},
            { ("ip", typeof(string)), "127.0.0.1" },
            { ("emergencyAccess", typeof(EmergencyAccess)), new EmergencyAccess
            {
                Id = Guid.NewGuid(),
                Email = "test@bitwarden.com",
            }},
            { ("granteeEmail", typeof(string)), "test@bitwarden.com" },
            { ("grantorName", typeof(string)), "Test User" },
            { ("initiatingName", typeof(string)), "Test" },
            { ("approvingName", typeof(string)), "Test Name" },
            { ("rejectingName", typeof(string)), "Test Name" },
            { ("provider", typeof(Provider)), new Provider
            {
                Id = Guid.NewGuid(),
            }},
            { ("name", typeof(string)), "Test Name" },
            { ("ea", typeof(EmergencyAccess)), new EmergencyAccess
            {
                Id = Guid.NewGuid(),
                Email = "test@bitwarden.com",
            }},
            { ("userName", typeof(string)), "testUser" },
            { ("orgName", typeof(string)), "Test Org Name" },
            { ("providerName", typeof(string)), "testProvider" },
            { ("providerUser", typeof(ProviderUser)), new ProviderUser
            {
                ProviderId = Guid.NewGuid(),
                Id = Guid.NewGuid(),
            }},
            { ("familyUserEmail", typeof(string)), "test@bitwarden.com" },
            { ("sponsorEmail", typeof(string)), "test@bitwarden.com" },
            { ("familyOrgName", typeof(string)), "Test Org Name" },
            // Swap existingAccount to true or false to generate different versions of the SendFamiliesForEnterpriseOfferEmailAsync emails.
            { ("existingAccount", typeof(bool)), false },
            { ("sponsorshipEndDate", typeof(DateTime)), DateTime.UtcNow.AddDays(1)},
            { ("sponsorOrgName", typeof(string)), "Sponsor Test Org Name" },
            { ("expirationDate", typeof(DateTime)), DateTime.Now.AddDays(3) },
            { ("utcNow", typeof(DateTime)), DateTime.UtcNow },
        };

        var globalSettings = new GlobalSettings
        {
            Mail = new GlobalSettings.MailSettings
            {
                Smtp = new GlobalSettings.MailSettings.SmtpSettings
                {
                    Host = "localhost",
                    TrustServer = true,
                    Port = 10250,
                },
                ReplyToEmail = "noreply@bitwarden.com",
            },
            SiteName = "Bitwarden",
        };

        var mailDeliveryService = new MailKitSmtpMailDeliveryService(globalSettings, Substitute.For<ILogger<MailKitSmtpMailDeliveryService>>());

        var handlebarsService = new HandlebarsMailService(globalSettings, mailDeliveryService, new BlockingMailEnqueuingService());

        var sendMethods = typeof(IMailService).GetMethods(BindingFlags.Public | BindingFlags.Instance)
            .Where(m => m.Name.StartsWith("Send") && m.Name != "SendEnqueuedMailMessageAsync");

        foreach (var sendMethod in sendMethods)
        {
            await InvokeMethod(sendMethod);
        }

        async Task InvokeMethod(MethodInfo method)
        {
            var parameters = method.GetParameters();
            var args = new object[parameters.Length];

            for (var i = 0; i < parameters.Length; i++)
            {
                if (!namedParameters.TryGetValue((parameters[i].Name, parameters[i].ParameterType), out var value))
                {
                    throw new InvalidOperationException($"Couldn't find a parameter for name '{parameters[i].Name}' and type '{parameters[i].ParameterType.FullName}'");
                }

                args[i] = value;
            }

            await (Task)method.Invoke(handlebarsService, args);
        }
    }

    // Remove this test when we add actual tests. It only proves that
    // we've properly constructed the system under test.
    [Fact]
    public void ServiceExists()
    {
        Assert.NotNull(_sut);
    }
}