From c8c9b7f4560994f2f6129211674b8d2729ddaba9 Mon Sep 17 00:00:00 2001
From: Polianin Nikita <nikitkapolyanin@yandex.ru>
Date: Fri, 16 Feb 2024 18:06:22 +0300
Subject: [PATCH] feat: add queries for professor

---
 .../GetProfessorInfoQuery.cs                  |  8 +++++
 .../GetProfessorInfoQueryHandler.cs           | 22 +++++++++++++
 .../GetProfessorDetails/ProfessorInfoVm.cs    | 22 +++++++++++++
 .../GetProfessorList/GetProfessorListQuery.cs |  9 ++++++
 .../GetProfessorListQueryHandler.cs           | 31 +++++++++++++++++++
 .../GetProfessorList/ProfessorListVm.cs       | 14 +++++++++
 .../GetProfessorList/ProfessorLookupDto.cs    | 22 +++++++++++++
 7 files changed, 128 insertions(+)
 create mode 100644 Application/Cqrs/Professor/Queries/GetProfessorDetails/GetProfessorInfoQuery.cs
 create mode 100644 Application/Cqrs/Professor/Queries/GetProfessorDetails/GetProfessorInfoQueryHandler.cs
 create mode 100644 Application/Cqrs/Professor/Queries/GetProfessorDetails/ProfessorInfoVm.cs
 create mode 100644 Application/Cqrs/Professor/Queries/GetProfessorList/GetProfessorListQuery.cs
 create mode 100644 Application/Cqrs/Professor/Queries/GetProfessorList/GetProfessorListQueryHandler.cs
 create mode 100644 Application/Cqrs/Professor/Queries/GetProfessorList/ProfessorListVm.cs
 create mode 100644 Application/Cqrs/Professor/Queries/GetProfessorList/ProfessorLookupDto.cs

diff --git a/Application/Cqrs/Professor/Queries/GetProfessorDetails/GetProfessorInfoQuery.cs b/Application/Cqrs/Professor/Queries/GetProfessorDetails/GetProfessorInfoQuery.cs
new file mode 100644
index 0000000..93f1aa8
--- /dev/null
+++ b/Application/Cqrs/Professor/Queries/GetProfessorDetails/GetProfessorInfoQuery.cs
@@ -0,0 +1,8 @@
+using MediatR;
+
+namespace Mirea.Api.DataAccess.Application.Cqrs.Professor.Queries.GetProfessorDetails;
+
+public class GetProfessorInfoQuery : IRequest<ProfessorInfoVm>
+{
+    public required int Id { get; set; }
+}
\ No newline at end of file
diff --git a/Application/Cqrs/Professor/Queries/GetProfessorDetails/GetProfessorInfoQueryHandler.cs b/Application/Cqrs/Professor/Queries/GetProfessorDetails/GetProfessorInfoQueryHandler.cs
new file mode 100644
index 0000000..411a68d
--- /dev/null
+++ b/Application/Cqrs/Professor/Queries/GetProfessorDetails/GetProfessorInfoQueryHandler.cs
@@ -0,0 +1,22 @@
+using MediatR;
+using Microsoft.EntityFrameworkCore;
+using Mirea.Api.DataAccess.Application.Common.Exceptions;
+using Mirea.Api.DataAccess.Application.Interfaces.DbContexts.Schedule;
+using System.Threading;
+using System.Threading.Tasks;
+
+namespace Mirea.Api.DataAccess.Application.Cqrs.Professor.Queries.GetProfessorDetails;
+
+public class GetProfessorInfoQueryHandler(IProfessorDbContext dbContext) : IRequestHandler<GetProfessorInfoQuery, ProfessorInfoVm>
+{
+    public async Task<ProfessorInfoVm> Handle(GetProfessorInfoQuery request, CancellationToken cancellationToken)
+    {
+        var discipline = await dbContext.Professors.FirstOrDefaultAsync(p => p.Id == request.Id, cancellationToken) ?? throw new NotFoundException(typeof(Domain.Schedule.Group), request.Id);
+
+        return new ProfessorInfoVm()
+        {
+            Id = discipline.Id,
+            Name = discipline.Name,
+        };
+    }
+}
\ No newline at end of file
diff --git a/Application/Cqrs/Professor/Queries/GetProfessorDetails/ProfessorInfoVm.cs b/Application/Cqrs/Professor/Queries/GetProfessorDetails/ProfessorInfoVm.cs
new file mode 100644
index 0000000..691ef9b
--- /dev/null
+++ b/Application/Cqrs/Professor/Queries/GetProfessorDetails/ProfessorInfoVm.cs
@@ -0,0 +1,22 @@
+namespace Mirea.Api.DataAccess.Application.Cqrs.Professor.Queries.GetProfessorDetails;
+
+/// <summary>
+/// Represents professors.
+/// </summary>
+public class ProfessorInfoVm
+{
+    /// <summary>
+    /// The unique identifier for the professor.
+    /// </summary>
+    public int Id { get; set; }
+
+    /// <summary>
+    /// The name of the professor.
+    /// </summary>
+    public required string Name { get; set; }
+
+    /// <summary>
+    /// The alt name of the professor. Usually is full name.
+    /// </summary>
+    public string? AltName { get; set; }
+}
\ No newline at end of file
diff --git a/Application/Cqrs/Professor/Queries/GetProfessorList/GetProfessorListQuery.cs b/Application/Cqrs/Professor/Queries/GetProfessorList/GetProfessorListQuery.cs
new file mode 100644
index 0000000..1a2e14b
--- /dev/null
+++ b/Application/Cqrs/Professor/Queries/GetProfessorList/GetProfessorListQuery.cs
@@ -0,0 +1,9 @@
+using MediatR;
+
+namespace Mirea.Api.DataAccess.Application.Cqrs.Professor.Queries.GetProfessorList;
+
+public class GetProfessorListQuery : IRequest<ProfessorListVm>
+{
+    public int? Page { get; set; }
+    public int? PageSize { get; set; }
+}
\ No newline at end of file
diff --git a/Application/Cqrs/Professor/Queries/GetProfessorList/GetProfessorListQueryHandler.cs b/Application/Cqrs/Professor/Queries/GetProfessorList/GetProfessorListQueryHandler.cs
new file mode 100644
index 0000000..adcff57
--- /dev/null
+++ b/Application/Cqrs/Professor/Queries/GetProfessorList/GetProfessorListQueryHandler.cs
@@ -0,0 +1,31 @@
+using MediatR;
+using Microsoft.EntityFrameworkCore;
+using Mirea.Api.DataAccess.Application.Interfaces.DbContexts.Schedule;
+using System.Linq;
+using System.Threading;
+using System.Threading.Tasks;
+
+namespace Mirea.Api.DataAccess.Application.Cqrs.Professor.Queries.GetProfessorList;
+
+public class GetProfessorListQueryHandler(IProfessorDbContext dbContext) : IRequestHandler<GetProfessorListQuery, ProfessorListVm>
+{
+    public async Task<ProfessorListVm> Handle(GetProfessorListQuery request, CancellationToken cancellationToken)
+    {
+        var dtos = dbContext.Professors.OrderBy(p => p.Id).Select(p => new ProfessorLookupDto()
+        {
+            Id = p.Id,
+            Name = p.Name,
+            AltName = p.AltName
+        });
+
+        if (request is { PageSize: not null, Page: not null })
+            dtos = dtos.Skip(request.Page.Value * request.PageSize.Value).Take(request.PageSize.Value);
+
+        var result = await dtos.ToListAsync(cancellationToken);
+
+        return new ProfessorListVm
+        {
+            Professors = result
+        };
+    }
+}
\ No newline at end of file
diff --git a/Application/Cqrs/Professor/Queries/GetProfessorList/ProfessorListVm.cs b/Application/Cqrs/Professor/Queries/GetProfessorList/ProfessorListVm.cs
new file mode 100644
index 0000000..f3bf0f2
--- /dev/null
+++ b/Application/Cqrs/Professor/Queries/GetProfessorList/ProfessorListVm.cs
@@ -0,0 +1,14 @@
+using System.Collections.Generic;
+
+namespace Mirea.Api.DataAccess.Application.Cqrs.Professor.Queries.GetProfessorList;
+
+/// <summary>
+/// Represents a view model containing multiple professors name.
+/// </summary>
+public class ProfessorListVm
+{
+    /// <summary>
+    /// The list of professors.
+    /// </summary>
+    public IList<ProfessorLookupDto> Professors { get; set; } = new List<ProfessorLookupDto>();
+}
\ No newline at end of file
diff --git a/Application/Cqrs/Professor/Queries/GetProfessorList/ProfessorLookupDto.cs b/Application/Cqrs/Professor/Queries/GetProfessorList/ProfessorLookupDto.cs
new file mode 100644
index 0000000..4e32f26
--- /dev/null
+++ b/Application/Cqrs/Professor/Queries/GetProfessorList/ProfessorLookupDto.cs
@@ -0,0 +1,22 @@
+namespace Mirea.Api.DataAccess.Application.Cqrs.Professor.Queries.GetProfessorList;
+
+/// <summary>
+/// Represents professor.
+/// </summary>
+public class ProfessorLookupDto
+{
+    /// <summary>
+    /// The unique identifier for the professor.
+    /// </summary>
+    public int Id { get; set; }
+
+    /// <summary>
+    /// The name of the professor.
+    /// </summary>
+    public required string Name { get; set; }
+
+    /// <summary>
+    /// The alt name of the professor. Usually is full name.
+    /// </summary>
+    public string? AltName { get; set; }
+}
\ No newline at end of file