Refactor settings, handlers, and add new command

Updated database and application settings, including new `Domain` setting. Modified command handlers to include new dependencies and validation logic. Added `AcceptGroupInvitation` command and handler. Introduced `IsActive` property to `Semester` entity and created corresponding migration. Enhanced API with new endpoint and refactored existing ones for better encapsulation. Updated `ApplicationDbContextModelSnapshot` to reflect schema changes.

MBS-COMMAND.API/appsettings.json

@@ -69,5 +69,6 @@
       "WithThreadId"
     ]
   },
-  "AllowedHosts": "*"
+  "AllowedHosts": "*",
+  "Domain" : "localhost:3000"
 }

MBS_COMMAND.Application/UserCases/Commands/Groups/AcceptGroupInvitationCommandHandler.cs

@@ -0,0 +1,36 @@
+using MBS_COMMAND.Contract.Abstractions.Messages;
+using MBS_COMMAND.Contract.Abstractions.Shared;
+using MBS_COMMAND.Domain.Abstractions;
+using MBS_COMMAND.Domain.Abstractions.Repositories;
+using MBS_COMMAND.Domain.Entities;
+using MBS_CONTRACT.SHARE.Services.Groups;
+using Command = MBS_COMMAND.Contract.Services.Groups.Command;
+
+namespace MBS_COMMAND.Application.UserCases.Commands.Groups;
+
+public class AcceptGroupInvitationCommandHandler(
+    IRepositoryBase<User, Guid> userRepository,
+    IRepositoryBase<Group, Guid> groupRepository,
+    IUnitOfWork unitOfWork)
+    : ICommandHandler<Command.AcceptGroupInvitation>
+{
+    public async Task<Result> Handle(Command.AcceptGroupInvitation request, CancellationToken cancellationToken)
+    {
+        var u = await userRepository.FindByIdAsync(request.MemberId, cancellationToken);
+        if (u == null)
+            return Result.Failure(new Error("404", "User Not Found"));
+        if (u.Status == 2)
+        {
+            return Result.Failure(new Error("403", "User is blocked"));
+        }
+
+        var g = await groupRepository.FindSingleAsync(x => x.Id == request.GroupId, cancellationToken);
+        if (g == null)
+            return Result.Failure(new Error("404", "Group Not Found"));
+        if (g.Members!.Any(x => x.StudentId == u.Id))
+            return Result.Failure(new Error("422", "Member already joined group"));
+        g.Members!.Add(new Group_Student_Mapping { StudentId = u.Id, GroupId = g.Id });
+        unitOfWork.SaveChangesAsync(cancellationToken);
+        return Result.Success("Member added to group");
+    }
+}

MBS_COMMAND.Application/UserCases/Commands/Groups/AddMemberToGroupCommandHandler.cs

@@ -5,10 +5,15 @@
 using MBS_COMMAND.Domain.Abstractions;
 using MBS_COMMAND.Domain.Abstractions.Repositories;
 using MBS_COMMAND.Domain.Entities;
+using Microsoft.Extensions.Configuration;
 
 namespace MBS_COMMAND.Application.UserCases.Commands.Groups;
 
-public sealed class AddMemberToGroupCommandHandler(IRepositoryBase<Group, Guid> groupRepository, IRepositoryBase<User, Guid> userRepository, IUnitOfWork unitOfWork, IMailService mailService) : ICommandHandler<Command.AddMemberToGroup>
+public sealed class AddMemberToGroupCommandHandler(
+    IRepositoryBase<Group, Guid> groupRepository,
+    IRepositoryBase<User, Guid> userRepository,
+    IConfiguration configuration,
+    IMailService mailService) : ICommandHandler<Command.AddMemberToGroup>
 {
     public async Task<Result> Handle(Command.AddMemberToGroup request, CancellationToken cancellationToken)
     {
@@ -20,17 +25,24 @@ public async Task<Result> Handle(Command.AddMemberToGroup request, CancellationT
             return Result.Failure(new Error("404", "Group Not Found"));
         if (g.Members!.Any(x => x.StudentId == u.Id))
             return Result.Failure(new Error("422", "Member already joined group"));
-        g.Members!.Add(new Group_Student_Mapping { StudentId = u.Id, GroupId = g.Id });
-        groupRepository.Update(g);
+        //g.Members!.Add(new Group_Student_Mapping { StudentId = u.Id, GroupId = g.Id });
+        var domain = configuration["Domain"];
         await mailService.SendMail(new MailContent
         {
             To = u.Email,
-            Subject = "Join Group",
-            Body = $"You have been invited to group {g.Name}"
+            Subject = $"Invitation to group {g.Name}",
+            Body = $@"
+        <p>You have been invited to group {g.Name}</p>
+        <a href='{domain}/api/v1/groups/accept-invitation/{g.Id}/{u.Id}' 
+           style='display:inline-block; padding:10px 20px; background-color:#4CAF50; color:white; text-decoration:none; border-radius:5px;'>
+           Accept Invitation
+        </a>
+    "
         });
-        await unitOfWork.SaveChangesAsync(cancellationToken);
+
+
         //send mail to user
 
         return Result.Success();
     }
-}
+}

MBS_COMMAND.Application/UserCases/Commands/Slots/CreateSlotCommandHandler.cs

@@ -6,10 +6,10 @@
 using MBS_COMMAND.Domain.Entities;
 using static System.DateOnly;
 namespace MBS_COMMAND.Application.UserCases.Commands.Slots;
-       //Test       v2   
 public sealed class CreateSlotCommandHandler(
     IRepositoryBase<Slot, Guid> slotRepository,
     IRepositoryBase<User, Guid> userRepository,
+    IRepositoryBase<Semester,Guid> semesterRepository,
     IUnitOfWork unitOfWork)
     : ICommandHandler<Command.CreateSlot>
 {
@@ -18,7 +18,9 @@ public async Task<Result> Handle(Command.CreateSlot request, CancellationToken c
         var mentor = await userRepository.FindByIdAsync(request.MentorId, cancellationToken);
         if (mentor == null)
             return Result.Failure(new Error("404", "User Not Found"));
-
+        var currentSemester = await semesterRepository.FindSingleAsync(x => x.IsActive, cancellationToken);
+        if(request.SlotModels.Any(x=>Parse(x.Date) < currentSemester!.From || Parse(x.Date) > currentSemester.From.AddDays(6)))
+            return Result.Failure(new Error("400", "Slot date must within the current semester and in the 1st week of the semester")); 
         var newSlots = request.SlotModels.Select(slotModel => new Slot
         {
             Id = Guid.NewGuid(),
@@ -40,12 +42,9 @@ public async Task<Result> Handle(Command.CreateSlot request, CancellationToken c
         var existingSlots = slotRepository.FindAll(x => x.MentorId == mentor.Id);
 
         // Check for overlaps with existing slots
-        foreach (var newSlot in newSlots)
+        foreach (var newSlot in newSlots.Where(newSlot => HasOverlap(newSlot, existingSlots)))
         {
-            if (HasOverlap(newSlot, existingSlots))
-            {
-                return Result.Failure(new Error("409", $"Slot overlaps with existing slot: {newSlot.Date} {newSlot.StartTime}-{newSlot.EndTime}"));
-            }
+            return Result.Failure(new Error("409", $"Slot overlaps with existing slot: {newSlot.Date} {newSlot.StartTime}-{newSlot.EndTime}"));
         }
 
         slotRepository.AddRange(newSlots);

MBS_COMMAND.Contract/Services/Groups/Command.cs

@@ -9,4 +9,5 @@ public record AddMemberToGroup(Guid GroupId, Guid MemberId) : ICommand;
     public record RemoveMemberFromGroup(Guid GroupId, Guid MemberId) : ICommand;
     public record ChangeLeader(Guid GroupId, Guid NewLeaderId) : ICommand;
     public record UpdateGroup(Guid GroupId, string Name, string Stacks) : ICommand;
+    public record AcceptGroupInvitation(Guid GroupId, Guid MemberId) : ICommand;
 }

MBS_COMMAND.Domain/Entities/Semester.cs

@@ -7,6 +7,7 @@ public class Semester : Entity<Guid>, IAuditableEntity
     public string Name { get; set; }
     public DateOnly From { get; set; }
     public DateOnly To { get; set; }
+    public bool IsActive { get; set; }
     public DateTimeOffset CreatedOnUtc { get; set; }
     public DateTimeOffset? ModifiedOnUtc { get; set; }
 }