STD - 39 | Realize Tag Controller

server/StudySharp.API/Controllers/TagController.cs

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+using System.Threading.Tasks;
+using AutoMapper;
+using MediatR;
+using Microsoft.AspNetCore.Mvc;
+using StudySharp.API.Requests.Tags;
+using StudySharp.API.Responses.Tags;
+using StudySharp.ApplicationServices.Commands;
+using StudySharp.ApplicationServices.Queries;
+using StudySharp.Domain.General;
+
+namespace StudySharp.API.Controllers
+{
+    // [Authorize]
+    [ApiController]
+    [Route("api/tags")]
+
+    public class GetTagsController : ControllerBase
+    {
+        private readonly IMediator _mediator;
+        private readonly IMapper _mapper;
+
+        public GetTagsController(IMediator mediator, IMapper mapper)
+        {
+            _mediator = mediator;
+            _mapper = mapper;
+        }
+
+        [HttpPost]
+        public async Task<OperationResult> Add([FromBody] AddTagRequest addTagRequest)
+        {
+            var addTagCommand = _mapper.Map<AddTagCommand>(addTagRequest);
+            return await _mediator.Send(addTagCommand);
+        }
+
+        [HttpGet("{id:int}")]
+        public async Task<OperationResult<GetTagByIdResponse>> GetTagById([FromRoute] GetTagByIdRequest getTagByIdRequest)
+        {
+            var getTagByIdQuery = _mapper.Map<GetTagByIdQuery>(getTagByIdRequest);
+            var operationResult = await _mediator.Send(getTagByIdQuery);
+
+            if (!operationResult.IsSucceeded)
+            {
+                return OperationResult.Fail<GetTagByIdResponse>(operationResult.Errors);
+            }
+
+            var response = _mapper.Map<GetTagByIdResponse>(operationResult.Result);
+            return OperationResult.Ok(response);
+        }
+
+        [HttpDelete("{id:int}")]
+        public async Task<OperationResult> Remove([FromBody] RemoveTagByIdRequest removeTagByIdRequest)
+        {
+            var removeTagByIdCommand = _mapper.Map<RemoveTagByIdCommand>(removeTagByIdRequest);
+            return await _mediator.Send(removeTagByIdCommand);
+        }
+    }
+}

server/StudySharp.API/Requests/Tags/AddTagRequest.cs

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+namespace StudySharp.API.Requests.Tags
+{
+    public class AddTagRequest
+    {
+        public string Name { get; set; }
+        public int TeacherId { get; set; }
+        public int CourseId { get; set; }
+    }
+}

server/StudySharp.API/Requests/Tags/GetTagByIdRequest.cs

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+using Microsoft.AspNetCore.Mvc;
+
+namespace StudySharp.API.Requests.Tags
+{
+    public class GetTagByIdRequest
+    {
+        [BindProperty(Name = "id", SupportsGet = true)]
+        public int Id { get; set; }
+    }
+}

server/StudySharp.API/Requests/Tags/RemoveTagByIdRequest.cs

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+using Microsoft.AspNetCore.Mvc;
+
+namespace StudySharp.API.Requests.Tags
+{
+    public class RemoveTagByIdRequest
+    {
+        [BindProperty(Name = "id", SupportsGet = true)]
+        public int Id { get; set; }
+    }
+}

server/StudySharp.API/Responses/Tags/AddTagResponse.cs

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+namespace StudySharp.API.Responses.Tags
+{
+    public class AddTagResponse
+    {
+    }
+}

server/StudySharp.API/Responses/Tags/GetTagByIdResponse.cs

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+using System;
+using System.Collections.Generic;
+using StudySharp.Domain.Models;
+
+namespace StudySharp.API.Responses.Tags
+{
+    public class GetTagByIdResponse
+    {
+        public int Id { get; set; }
+        public string Name { get; set; }
+        public int TeacherId { get; set; }
+        public Teacher Teacher { get; set; }
+        public List<TheoryBlock> TheoryBlocks { get; set; }
+        public List<PracticalBlock> PracticalBlocks { get; set; }
+        public DateTimeOffset DateCreated { get; private set; }
+        public DateTimeOffset? DateModified { get; private set; }
+    }
+}

server/StudySharp.API/Responses/Tags/RemoveTagByIdResponse.cs

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+namespace StudySharp.API.Responses.Tags
+{
+    public class RemoveTagByIdResponse
+    {
+    }
+}

server/StudySharp.ApplicationServices/Queries/GetTagsQuery.cs

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+using System.Collections.Generic;
+using System.Threading;
+using System.Threading.Tasks;
+using MediatR;
+using Microsoft.EntityFrameworkCore;
+using StudySharp.Domain.General;
+using StudySharp.Domain.Models;
+using StudySharp.DomainServices;
+
+namespace StudySharp.ApplicationServices.Queries
+{
+    public sealed class GetTagsQuery : IRequest<OperationResult<List<Tag>>>
+    {
+    }
+
+    public sealed class GetTagsQueryHandler : IRequestHandler<GetTagsQuery, OperationResult<List<Tag>>>
+    {
+        private readonly StudySharpDbContext _context;
+
+        public GetTagsQueryHandler(StudySharpDbContext studySharpDbContext)
+        {
+            _context = studySharpDbContext;
+        }
+
+        public async Task<OperationResult<List<Tag>>> Handle(GetTagsQuery request, CancellationToken cancellationToken)
+        {
+            var tags = await _context.Tags.ToListAsync(cancellationToken);
+            return OperationResult.Ok(tags);
+        }
+    }
+}