Retructured solution

LiteCharms.Features/Shop/Notifications/Commands/CreateNotificationCommand.cs

@@ -0,0 +1,73 @@
+using LiteCharms.Features.Shop;
+using LiteCharms.Models;
+
+namespace LiteCharms.Features.Notifications.Commands;
+
+public class CreateNotification : IRequest<Result<Guid>>
+{
+    public NotificationDirection Direction { get; set; }
+
+    public string? Sender { get; set; }
+
+    public string? SenderAddress { get; set; }
+
+    public string? Subject { get; set; }
+
+    public string? Message { get; set; }
+
+    public NotificationPlatforms Platform { get; set; }
+
+    public Priorities Priority { get; set; }
+
+    public string? Recipient { get; set; }
+
+    public string? RecipientAddress { get; set; }
+
+    public string? CorrelationId { get; set; }
+
+    public CorrelationIdTypes CorrelationIdType { get; set; }
+
+    public bool IsInternal { get; set; }
+
+    public bool IsHtml { get; set; }
+
+    private CreateNotification(NotificationDirection direction, string sender, string senderAddress, string subject, string message, NotificationPlatforms platform, Priorities priority, string recipient, string recipientAddress, string correlationId, CorrelationIdTypes correlationIdType, bool isInternal, bool isHtml = false)
+    {
+        Direction = direction;
+        Sender = sender;
+        SenderAddress = senderAddress;
+        Subject = subject;
+        Message = message;
+        Platform = platform;
+        Priority = priority;
+        Recipient = recipient;
+        RecipientAddress = recipientAddress;
+        CorrelationId = correlationId;
+        CorrelationIdType = correlationIdType;
+        IsInternal = isInternal;
+        IsHtml = isHtml;
+    }
+
+    public static CreateNotification Create(NotificationDirection direction, string sender, string senderAddress, string subject, string message, NotificationPlatforms platform, Priorities priority, string recipient, string recipientAddress, string correlationId, CorrelationIdTypes correlationIdType, bool isInternal, bool isHtml = false)
+    {
+        if (string.IsNullOrWhiteSpace(sender))
+            throw new ArgumentException("Sender name is required.", nameof(sender));
+
+        if (string.IsNullOrWhiteSpace(subject))
+            throw new ArgumentException("Subject is required.", nameof(subject));
+
+        if (string.IsNullOrWhiteSpace(message))
+            throw new ArgumentException("Message is required.", nameof(message));
+
+        if (string.IsNullOrWhiteSpace(recipient))
+            throw new ArgumentException("Recipient name is required.", nameof(recipient));
+
+        if (string.IsNullOrWhiteSpace(recipientAddress))
+            throw new ArgumentException("Recipient address is required.", nameof(recipientAddress));
+
+        if (string.IsNullOrWhiteSpace(correlationId))
+            throw new ArgumentException("CorrelationId is required.", nameof(correlationId));
+
+        return new(direction, sender, senderAddress, subject, message, platform, priority, recipient, recipientAddress, correlationId, correlationIdType, isInternal, isHtml);
+    }
+}

LiteCharms.Features/Shop/Notifications/Commands/Handlers/CreateNotificationCommandHandler.cs

@@ -0,0 +1,40 @@
+using LiteCharms.Features.Shop.Postgres;
+
+namespace LiteCharms.Features.Notifications.Commands.Handlers;
+
+public class CreateNotificationCommandHandler(IDbContextFactory<ShopDbContext> contextFactory) : IRequestHandler<CreateNotification, Result<Guid>>
+{
+    public async ValueTask<Result<Guid>> Handle(CreateNotification request, CancellationToken cancellationToken)
+    {
+        try
+        {
+            using var context = await contextFactory.CreateDbContextAsync(cancellationToken);
+
+            var newNotification = context.Notifications.Add(new Entities.Notification
+            {
+                Direction = request.Direction,
+                SenderName = request.Sender,
+                Sender = request.SenderAddress,
+                Recipient = request.Recipient,
+                RecipientAddress = request.RecipientAddress,
+                Subject = request.Subject,
+                Message = request.Message,
+                Platform = request.Platform,
+                Priority = request.Priority,
+                CorrelationId = request.CorrelationId,
+                CorrelationIdType = request.CorrelationIdType,
+                IsInternal = request.IsInternal,
+                IsHtml = request.IsHtml,
+                Processed = false
+            });
+
+            return newNotification is not null
+                ? Result.Ok(newNotification.Entity.Id)
+                : Result.Fail(new Error("Failed to create notification"));
+        }
+        catch (Exception ex)
+        {
+            return Result.Fail(new Error(ex.Message).CausedBy(ex));
+        }
+    }
+}

LiteCharms.Features/Shop/Notifications/Commands/Handlers/UpdateNotificationCommandHandler.cs

@@ -0,0 +1,35 @@
+using LiteCharms.Features.Shop.Postgres;
+
+namespace LiteCharms.Features.Notifications.Commands.Handlers;
+
+public class UpdateNotificationCommandHandler(IDbContextFactory<ShopDbContext> contextFactory) : IRequestHandler<UpdateNotificationCommand, Result>
+{
+    public async ValueTask<Result> Handle(UpdateNotificationCommand request, CancellationToken cancellationToken)
+    {
+		try
+		{
+            using var context = await contextFactory.CreateDbContextAsync(cancellationToken);
+
+            var notification = await context.Notifications.FirstOrDefaultAsync(n => n.Id == request.NotificationId, cancellationToken);
+
+            if(notification is null)
+                return Result.Fail(new Error($"Notification with id {request.NotificationId} not found."));
+
+            notification.Processed = request.Processed;
+
+            if (request.HasError)
+            {
+                notification.HasError = request.HasError;
+                notification.Errors = request.Errors; 
+            }
+
+            return await context.SaveChangesAsync(cancellationToken) > 0
+                ? Result.Ok()
+                : Result.Fail(new Error($"Failed to update notification with id {request.NotificationId}."));
+        }
+		catch (Exception ex)
+		{
+            return Result.Fail(new Error(ex.Message).CausedBy(ex));
+        }
+    }
+}

LiteCharms.Features/Shop/Notifications/Commands/UpdateNotificationCommand.cs

@@ -0,0 +1,28 @@
+namespace LiteCharms.Features.Notifications.Commands;
+
+public class UpdateNotificationCommand : IRequest<Result>
+{
+    public Guid NotificationId { get; set; }
+
+    public bool Processed { get; set; }
+
+    public bool HasError { get; set; }
+
+    public string[]? Errors { get; set; }
+
+    private UpdateNotificationCommand(Guid notificationId, bool processed, bool hasError = false, string[]? errors = null)
+    {
+        NotificationId = notificationId;
+        Processed = processed;
+        HasError = hasError;
+        Errors = errors;
+    }
+
+    public static UpdateNotificationCommand Create(Guid notificationId, bool processed, bool hasError = false, string[]? errors = null) 
+    { 
+        if(notificationId == Guid.Empty)
+            throw new ArgumentException("Notification ID cannot be empty.", nameof(notificationId));
+
+        return new(notificationId, processed);
+    }
+}

LiteCharms.Features/Shop/Notifications/Entities/Notification.cs

@@ -0,0 +1,4 @@
+namespace LiteCharms.Features.Shop.Notifications.Entities;
+
+[EntityTypeConfiguration<NotificationConfiguration, Notification>]
+public class Notification : Models.Notification;

LiteCharms.Features/Shop/Notifications/Entities/NotificationConfiguration.cs

@@ -0,0 +1,28 @@
+namespace LiteCharms.Features.Shop.Notifications.Entities;
+
+public class NotificationConfiguration : IEntityTypeConfiguration<Notification>
+{
+    public void Configure(EntityTypeBuilder<Notification> builder)
+    {
+        builder.ToTable(nameof(Notification));
+
+        builder.HasKey(f => f.Id);
+        builder.Property(f => f.CreatedAt).IsRequired().ValueGeneratedOnAdd().HasDefaultValueSql("now()");
+        builder.Property(f => f.UpdatedAt).IsRequired(false);
+        builder.Property(f => f.Direction).IsRequired().HasConversion<int>();
+        builder.Property(f => f.Platform).IsRequired().HasConversion<int>();
+        builder.Property(f => f.Priority).IsRequired().HasConversion<int>();
+        builder.Property(f => f.CorrelationIdType).IsRequired().HasConversion<int>();
+        builder.Property(f => f.Sender).IsRequired();
+        builder.Property(f => f.Subject).IsRequired();
+        builder.Property(f => f.Message).IsRequired();
+        builder.Property(f => f.Recipient).IsRequired();
+        builder.Property(f => f.RecipientAddress).IsRequired();
+        builder.Property(f => f.CorrelationId).IsRequired();
+        builder.Property(f => f.IsHtml).HasDefaultValue(false);
+        builder.Property(f => f.IsInternal).HasDefaultValue(true);
+        builder.Property(f => f.Processed).HasDefaultValue(false);
+        builder.Property(f => f.HasError).HasDefaultValue(false);
+        builder.Property(f => f.Errors).HasColumnType("jsonb").IsRequired(false);
+    }
+}

LiteCharms.Features/Shop/Notifications/Events/Handlers/ProcessEmailNotificationsEventHandler.cs

@@ -0,0 +1,71 @@
+using LiteCharms.Features.Email.Commands;
+using LiteCharms.Features.Shop.Notifications.Entities;
+using LiteCharms.Features.Shop.Postgres;
+using static LiteCharms.Features.ServiceBus.Constants;
+
+namespace LiteCharms.Features.Notifications.Events.Handlers;
+
+public class ProcessEmailNotificationsEventHandler(IDbContextFactory<ShopDbContext> contextFactory, ILogger<ProcessEmailNotificationsEvent> logger, ISender mediator) :
+    INotificationHandler<ProcessEmailNotificationsEvent>
+{
+    public async ValueTask Handle(ProcessEmailNotificationsEvent message, CancellationToken cancellationToken)
+    {
+        try
+        {
+            using var context = await contextFactory.CreateDbContextAsync(cancellationToken);
+
+            var notifications = await context.Notifications
+                .OrderByDescending(o => o.Priority)
+                .ThenBy(o => o.CreatedAt)
+                .Where(n => n.CorrelationIdType == Models.CorrelationIdTypes.Email)
+                .Where(n => n.Direction == Models.NotificationDirection.Outgoing)
+                .Take(message.MaxRecords)
+                .ToListAsync(cancellationToken);
+
+            foreach (var notification in notifications)
+            {
+                var sendResult = await SendEmailAsync(notification, cancellationToken);
+
+                if(sendResult.IsFailed)
+                {
+                    var errors = new List<string>(1000);
+
+                    errors.AddRange(sendResult.Errors.Select(e => e.Message));
+
+                    if (sendResult.Reasons?.Count > 0)
+                        errors.AddRange(sendResult.Reasons.Select(e => e.Message));
+
+                    notification.HasError = true;                    
+                    notification.Errors = [.. errors];
+                }
+
+                notification.Processed = true;
+            }
+
+            await context.SaveChangesAsync(cancellationToken);
+        }
+        catch (Exception ex)
+        {
+            logger.LogError(ex, ex.Message);
+        }
+    }
+
+    private async Task<Result> SendEmailAsync(Notification notification, CancellationToken cancellationToken = default)
+    {
+        try
+        {
+            var request = SendEmailCommand.Create(notification.Sender!, notification.SenderName!, ShopEmailFromAddress,
+                ShopEmailFromName, notification.Subject!, notification.Message!);
+
+            var result = await mediator.Send(request, cancellationToken);
+
+            return result.IsFailed 
+                ? Result.Fail(result.Errors) 
+                : Result.Ok();
+        }
+        catch (Exception ex)
+        {
+            return Result.Fail(new Error(ex.Message).CausedBy(ex));
+        }
+    }
+}

LiteCharms.Features/Shop/Notifications/Events/ProcessEmailNotificationsEvent.cs

@@ -0,0 +1,14 @@
+using LiteCharms.Features.Abstractions;
+
+namespace LiteCharms.Features.Notifications.Events;
+
+public class ProcessEmailNotificationsEvent : EventBase, IEvent
+{
+    public string Name { get; set; } = nameof(ProcessEmailNotificationsEvent);
+
+    public int MaxRecords { get; set; }
+
+    private ProcessEmailNotificationsEvent(int maxRecords = 1000) => MaxRecords = maxRecords;
+
+    public static ProcessEmailNotificationsEvent Create(int maxRecords = 1000) => new(maxRecords);
+}

LiteCharms.Features/Shop/Notifications/INotificationService.cs

@@ -0,0 +1,9 @@
+using LiteCharms.Features.Shop.Notifications.Models;
+
+namespace LiteCharms.Features.Shop.Notifications;
+
+public interface INotificationService
+{
+    Task<Result<Guid>> CreateNotificationAsync(CreateNotification request, CancellationToken cancellationToken = default);
+    Task<Result> UpdateNotificationAsync(UpdateNotification request, CancellationToken cancellationToken = default);
+}

LiteCharms.Features/Shop/Notifications/Models/Notification.cs

@@ -0,0 +1,42 @@
+namespace LiteCharms.Features.Shop.Notifications.Models;
+
+public class Notification
+{
+    public Guid Id { get; set; }
+
+    public DateTimeOffset CreatedAt { get; set; }
+
+    public DateTimeOffset? UpdatedAt { get; set; }
+
+    public NotificationDirection Direction { get; set; }
+
+    public NotificationPlatforms Platform { get; set; }
+
+    public Priorities Priority { get; set; }
+
+    public CorrelationIdTypes CorrelationIdType { get; set; }
+
+    public string? Sender { get; set; }
+
+    public string? SenderName { get; set; }
+
+    public string? Subject { get; set; }
+
+    public string? Message { get; set; }
+
+    public string? Recipient { get; set; }
+
+    public string? RecipientAddress { get; set; }
+
+    public string? CorrelationId { get; set; }
+
+    public bool IsHtml { get; set; }
+
+    public bool IsInternal { get; set; }
+
+    public bool Processed { get; set; }
+
+    public bool HasError { get; set; }
+
+    public string[]? Errors { get; set; }
+}

LiteCharms.Features/Shop/Notifications/Models/Records.cs

@@ -0,0 +1,41 @@
+namespace LiteCharms.Features.Shop.Notifications.Models;
+
+public record CreateNotification
+{
+    public NotificationDirection Direction { get; set; }
+
+    public string? Sender { get; set; }
+
+    public string? SenderAddress { get; set; }
+
+    public string? Subject { get; set; }
+
+    public string? Message { get; set; }
+
+    public NotificationPlatforms Platform { get; set; }
+
+    public Priorities Priority { get; set; }
+
+    public string? Recipient { get; set; }
+
+    public string? RecipientAddress { get; set; }
+
+    public string? CorrelationId { get; set; }
+
+    public CorrelationIdTypes CorrelationIdType { get; set; }
+
+    public bool IsInternal { get; set; }
+
+    public bool IsHtml { get; set; }
+}
+
+public class UpdateNotification
+{
+    public Guid NotificationId { get; set; }
+
+    public bool Processed { get; set; }
+
+    public bool HasError { get; set; }
+
+    public string[]? Errors { get; set; }
+}

LiteCharms.Features/Shop/Notifications/NotificationService.cs

@@ -0,0 +1,5 @@
+namespace LiteCharms.Features.Shop.Notifications;
+
+public class NotificationService : INotificationService
+{
+}

LiteCharms.Features/Shop/Notifications/Queries/GetNotificationQuery.cs

@@ -0,0 +1,18 @@
+using LiteCharms.Features.Shop.Notifications.Models;
+
+namespace LiteCharms.Features.Notifications.Queries;
+
+public class GetNotificationQuery : IRequest<Result<Notification>>
+{
+    public Guid NotificationId { get; set; }
+
+    private GetNotificationQuery(Guid notificationId) => NotificationId = notificationId;
+
+    public static GetNotificationQuery Create(Guid notificationId)
+    {
+        if (notificationId == Guid.Empty)
+            throw new ArgumentException("Notification ID is required.", nameof(notificationId));
+
+        return new(notificationId);
+    }
+}

LiteCharms.Features/Shop/Notifications/Queries/GetNotificationsQuery.cs

@@ -0,0 +1,30 @@
+using LiteCharms.Features.Shop.Notifications.Models;
+
+namespace LiteCharms.Features.Notifications.Queries;
+
+public class GetNotificationsQuery : IRequest<Result<Notification[]>>
+{
+    public DateOnly From { get; set; }
+
+    public DateOnly To { get; set; }
+
+    public int MaxRecords { get; set; }
+
+    private GetNotificationsQuery(DateOnly from, DateOnly to, int maxRecords = 1000)
+    {
+        From = from;
+        To = to;
+        MaxRecords = maxRecords;
+    }
+
+    public static GetNotificationsQuery Create(DateOnly from, DateOnly to, int maxRecords = 1000)
+    {
+        if (from > to)  
+            throw new ArgumentException("From date cannot be greater than To date.");
+
+        if(maxRecords <= 0)  
+            throw new ArgumentException("MaxRecords must be a positive integer.", nameof(maxRecords));
+
+        return new(from, to, maxRecords);
+    }
+}

LiteCharms.Features/Shop/Notifications/Queries/Handlers/GetNotificationQueryHandler.cs

@@ -0,0 +1,26 @@
+using LiteCharms.Extensions;
+using LiteCharms.Features.Shop.Notifications.Models;
+using LiteCharms.Features.Shop.Postgres;
+
+namespace LiteCharms.Features.Notifications.Queries.Handlers;
+
+public class GetNotificationQueryHandler(IDbContextFactory<ShopDbContext> contextFactory) : IRequestHandler<GetNotificationQuery, Result<Notification>>
+{
+    public async ValueTask<Result<Notification>> Handle(GetNotificationQuery request, CancellationToken cancellationToken)
+    {
+        try
+        {
+            await using var context = await contextFactory.CreateDbContextAsync(cancellationToken);
+
+            var notification = await context.Notifications.FirstOrDefaultAsync(n => n.Id == request.NotificationId, cancellationToken);
+
+            return notification is not null 
+                ? Result.Ok(notification.ToModel())
+                : Result.Fail<Notification>(new Error($"Notification with id {request.NotificationId} not found"));
+        }
+        catch (Exception ex)
+        {
+            return Result.Fail<Notification>(new Error(ex.Message).CausedBy(ex));
+        }
+    }
+}

LiteCharms.Features/Shop/Notifications/Queries/Handlers/GetNotificationsQueryHandler.cs

@@ -0,0 +1,33 @@
+using LiteCharms.Extensions;
+using LiteCharms.Features.Shop.Notifications.Models;
+using LiteCharms.Features.Shop.Postgres;
+
+namespace LiteCharms.Features.Notifications.Queries.Handlers;
+
+public class GetNotificationsQueryHandler(IDbContextFactory<ShopDbContext> contextFactory) : IRequestHandler<GetNotificationsQuery, Result<Notification[]>>
+{
+    public async ValueTask<Result<Notification[]>> Handle(GetNotificationsQuery request, CancellationToken cancellationToken)
+    {
+		try
+		{
+            var fromDate = request.From.ToDateTime(TimeOnly.MinValue);
+            var toDate = request.To.ToDateTime(TimeOnly.MaxValue);
+
+            using var context = await contextFactory.CreateDbContextAsync(cancellationToken);
+
+            var notifications = await context.Notifications.AsNoTracking()
+                .Where(n => n.CreatedAt >= fromDate && n.CreatedAt <= toDate)
+                .OrderByDescending(n => n.CreatedAt)
+                .Take(request.MaxRecords)
+                .ToArrayAsync(cancellationToken);
+
+            return notifications?.Length > 0 
+                ? Result.Ok(notifications.Select(n => n.ToModel()).ToArray()) 
+                : Result.Fail(new Error($"No notifications found for the specified date range {request.From} to {request.To}."));
+        }
+		catch (Exception ex)
+		{
+            return Result.Fail(new Error(ex.Message).CausedBy(ex));
+        }
+    }
+}