Confusion about Repository Pattern and Unit of Work.

Hi there. I recently applied the Repository Pattern and Unit of Work in an API I'm creating, and everything was going well. However, I got stuck trying to understand how to pass the Database Context to the implementation of one of my interfaces. I'm trying to grasp it, but I can't figure it out. I'll attach few code for reference:

(Program.cs) Here is where I'll apply Dependency Injection for my ICategoryRepository with a Scoped lifetime:

builder.Services.AddScoped<ICategoryRepository, CategoryRepository>();

builder.Services.AddScoped<ICategoryRepository, CategoryRepository>();

(DataAccess/Repository/Repository.cs) Here is my implementation of my Repository Interface (only constructor and fields):

    public class Repository<T> : IRepository<T> where T : class
    {
        private readonly ApplicationDbContext _db;
        internal DbSet<T> dbSet;

        public Repository(ApplicationDbContext db)
        {
            _db = db;
            this.dbSet = _db.Set<T>();
            // For example, _db.Categories == dbSet
        }

    public class Repository<T> : IRepository<T> where T : class
    {
        private readonly ApplicationDbContext _db;
        internal DbSet<T> dbSet;

        public Repository(ApplicationDbContext db)
        {
            _db = db;
            this.dbSet = _db.Set<T>();
            // For example, _db.Categories == dbSet
        }

(DataAccess/Repository/CategoryRepository.cs) And here is my implementation of my Category Repository Interface (only constructor, as always):

    public class CategoryRepository : Repository<Category>, ICategoryRepository
    {
        private readonly ApplicationDbContext _db;

        public CategoryRepository(ApplicationDbContext db) : base(db)
        {
            _db = db;
        }

    public class CategoryRepository : Repository<Category>, ICategoryRepository
    {
        private readonly ApplicationDbContext _db;

        public CategoryRepository(ApplicationDbContext db) : base(db)
        {
            _db = db;
        }

Look how these two has inyected with the DbContext, but here comes my confusion...

In the controller, I created an ICategoryRepository object, but I don't understand how it pass the DbContext to the controller itself...

Confusion about Repository Pattern and Unit of Work.

builder.Services.AddScoped<ICategoryRepository, CategoryRepository>();

builder.Services.AddScoped<ICategoryRepository, CategoryRepository>();

(DataAccess/Repository/Repository.cs) Here is my implementation of my Repository Interface (only constructor and fields):

    public class Repository<T> : IRepository<T> where T : class
    {
        private readonly ApplicationDbContext _db;
        internal DbSet<T> dbSet;

        public Repository(ApplicationDbContext db)
        {
            _db = db;
            this.dbSet = _db.Set<T>();
            // For example, _db.Categories == dbSet
        }

    public class Repository<T> : IRepository<T> where T : class
    {
        private readonly ApplicationDbContext _db;
        internal DbSet<T> dbSet;

        public Repository(ApplicationDbContext db)
        {
            _db = db;
            this.dbSet = _db.Set<T>();
            // For example, _db.Categories == dbSet
        }

(DataAccess/Repository/CategoryRepository.cs) And here is my implementation of my Category Repository Interface (only constructor, as always):

    public class CategoryRepository : Repository<Category>, ICategoryRepository
    {
        private readonly ApplicationDbContext _db;

        public CategoryRepository(ApplicationDbContext db) : base(db)
        {
            _db = db;
        }

    public class CategoryRepository : Repository<Category>, ICategoryRepository
    {
        private readonly ApplicationDbContext _db;

        public CategoryRepository(ApplicationDbContext db) : base(db)
        {
            _db = db;
        }

Confusion about Repository Pattern and Unit of Work.

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