| | | 1 | | using Syki.Back.Domain.Courses; |
| | | 2 | | |
| | | 3 | | namespace Syki.Back.Features.Disciplines.AddDisciplineCourses; |
| | | 4 | | |
| | 12 | 5 | | public class AddDisciplineCoursesService(SykiDbContext ctx) : ISykiService |
| | | 6 | | { |
| | | 7 | | private class Validator : AbstractValidator<AddDisciplineCoursesIn> |
| | | 8 | | { |
| | 2 | 9 | | public Validator() |
| | | 10 | | { |
| | 2 | 11 | | RuleFor(x => x.Courses).NotEmpty().WithError(InvalidCoursesList.I); |
| | 14 | 12 | | RuleFor(x => x.Courses).Must(x => x != null && x.IsAllDistinct()).WithError(InvalidCoursesList.I); |
| | 2 | 13 | | } |
| | | 14 | | } |
| | 2 | 15 | | private static readonly Validator V = new(); |
| | | 16 | | |
| | | 17 | | public async Task<OneOf<AddDisciplineCoursesOut, SykiError>> Add(AddDisciplineCoursesIn data) |
| | | 18 | | { |
| | 16 | 19 | | if (V.Run(data, out var error)) return error; |
| | | 20 | | |
| | 8 | 21 | | var discipline = await ctx.Disciplines.Include(d => d.Links) |
| | 8 | 22 | | .FirstOrDefaultAsync(x => x.InstitutionId == ctx.RequestUser.InstitutionId && x.Id == data.DisciplineId); |
| | 10 | 23 | | if (discipline == null) return DisciplineNotFound.I; |
| | | 24 | | |
| | 6 | 25 | | var validCourseIds = await ctx.Courses |
| | 6 | 26 | | .Where(c => c.InstitutionId == ctx.RequestUser.InstitutionId && data.Courses.Contains(c.Id)) |
| | 6 | 27 | | .Select(c => c.Id) |
| | 6 | 28 | | .ToListAsync(); |
| | | 29 | | |
| | 8 | 30 | | if (validCourseIds.Count != data.Courses.Count) return InvalidCoursesList.I; |
| | | 31 | | |
| | 4 | 32 | | var existingCourseIds = discipline.Links.Select(l => l.CourseId).ToHashSet(); |
| | 10 | 33 | | validCourseIds.Where(id => !existingCourseIds.Contains(id)).ToList() |
| | 10 | 34 | | .ForEach(id => discipline.Links.Add(new CourseDiscipline { CourseId = id })); |
| | | 35 | | |
| | 4 | 36 | | await ctx.SaveChangesAsync(); |
| | | 37 | | |
| | 4 | 38 | | return new AddDisciplineCoursesOut { Id = discipline.Id }; |
| | 12 | 39 | | } |
| | | 40 | | } |