ADD CLASS TO SCHEDULE + REMOVE CLASS FROM SCHEDULE

[keanacobarde]

User Story

I, as either a self-learner who is learning on my own and gleaning inspiration from others or as a current student looking to mirror the same classes or study schedules as my friends, should be able to add either custom classes or pre-existing classes that have been made by other students to my schedule.

Acceptance Criteria

• Endpoint URL: '/schedule/{id}/addClass'
• Endpoint URL: '/schedule/{id}/removeClass' WHEN I, the user, go through the class selection or deletion from a schedule process, an affordance should exist to allow me to either add or remove classes to my current schedule.

Dependencies

• All setup tickets must be created before work can be done on this issue.

Dev Notes

• Add Class/Remove Class DTO must be created

• Add and Deleting M2M relationship, Rare

      public static void Map(WebApplication app)
      {
  
          //add tag to post
          app.MapPatch("/api/posts/{postId}/tag", (RareDbContext db, PostTagDto postTag) =>
          {
              Post post = db.Posts
                            .Include(p => p.Tags)
                            .SingleOrDefault(p => p.Id == postTag.Post_Id);
              Tag tag = db.Tags
                          .SingleOrDefault(t => t.Id == postTag.Tag_Id);
              if (post == null)
              {
                  return Results.BadRequest("Invalid data submitted");
              }
              try
              {
                  post.Tags.Add(tag);
                  db.SaveChanges();
                  return Results.Ok(postTag);
              }
              catch (ArgumentNullException)
              {
                  return Results.BadRequest("Tag not found");
              }
          });
  
          //remove tag from post
          app.MapPatch("/api/posts/{postId}/remove", (RareDbContext db, PostTagDto postTag) =>
          {
              Post post = db.Posts
                            .Include(p => p.Tags)
                            .SingleOrDefault(p => p.Id == postTag.Post_Id);
              if (post == null)
              {
                  return Results.BadRequest("Invalid data submitted");
              }
              if (post.Tags.Count < 1)
              {
                  return Results.BadRequest("No tags found");
              }
              Tag tagToRemove = post.Tags
                                    .SingleOrDefault(t => t.Id == postTag.Tag_Id);
              if (tagToRemove == null)
              {
                  return Results.BadRequest("Tag not found");
              }
  
              post.Tags.Remove(tagToRemove);
              db.SaveChanges();
              return Results.Ok("tag removed");
  
          });