- first version of backend done

OnlyPrompt.Backend/ApiModels/Category/Models.cs

@@ -0,0 +1,5 @@
+namespace OnlyPrompt.Backend.ApiModels.Category
+{
+	public record ApiCategory(Guid Id, string Name, string Slug, string? Description);
+	public record ApiMinimalCategory(string Name, string Slug);
+}

OnlyPrompt.Backend/ApiModels/Category/Requests.cs

@@ -0,0 +1,5 @@
+namespace OnlyPrompt.Backend.ApiModels.Category
+{
+	public record ApiCreateCategoryRequest(string Name, string? Slug, string? Description);
+	public record ApiUpdateCategoryRequest(string? Name, string? Slug, string? Description);
+}

OnlyPrompt.Backend/ApiModels/Subscription/Models.cs

@@ -0,0 +1,5 @@
+namespace OnlyPrompt.Backend.ApiModels.Subscription
+{
+	public record ApiSubscriptionTier(Guid Id, string Name, int Level, decimal MonthlyPrice, string? Description);
+	public record ApiSubscription(Guid SubscribedToId, string SubscribedToName, ApiSubscriptionTier? CurrentTier);
+}

OnlyPrompt.Backend/ApiModels/Subscription/Requests.cs

@@ -0,0 +1,5 @@
+namespace OnlyPrompt.Backend.ApiModels.Subscription
+{
+	public record ApiCreateSubscriptionTierRequest(string Name, decimal MonthlyPrice, int Level, string? Description);
+	public record ApiUpdateSubscriptionTierRequest(string? Name, decimal? MonthlyPrice, int? Level, string? Description);
+}

OnlyPrompt.Backend/Controllers/AuthController.cs

@@ -31,7 +31,7 @@ namespace OnlyPrompt.Backend.Controllers
 
 		[AllowAnonymous]
 		[HttpPost("login")]
-		public async Task<Results<RedirectHttpResult, BadRequest<string>, NotFound<string>>> LoginAsync([FromBody] ApiLoginRequest request)
+		public async Task<Results<Ok, BadRequest<string>, NotFound<string>>> LoginAsync([FromBody] ApiLoginRequest request)
 		{
 			var user = await FindUserAsync(request.UserNameOrEmail);
 			if (user is null)
@@ -46,7 +46,7 @@ namespace OnlyPrompt.Backend.Controllers
 
 			var token = _jwtService.BuildToken(user, out var validUntil);
 			this.Response.Cookies.Append("jwt", token, AuthCookieOptions.Copy(c => c.Expires = validUntil));
-			return TypedResults.Redirect("feed");
+			return TypedResults.Ok();
 		}
 
 		[AllowAnonymous]
@@ -67,7 +67,7 @@ namespace OnlyPrompt.Backend.Controllers
 				return TypedResults.ValidationProblem(errors);
 			}
 
-			var id = Guid.NewGuid();
+			var id = Guid.CreateVersion7();
 			var slug = await SlugHelper.GenerateUniqueSlugAsync(request.UserName, s => _db.UserProfiles.AnyAsync(up => up.Slug == s), 32);
 			var avatarUrl = $"https://api.dicebear.com/9.x/bottts/svg?seed={id}";
 			var newUser = new UserModel

OnlyPrompt.Backend/Controllers/CategoryController.cs

@@ -0,0 +1,123 @@
+using AutoMapper;
+using AutoMapper.QueryableExtensions;
+using Microsoft.AspNetCore.Authentication.JwtBearer;
+using Microsoft.AspNetCore.Authorization;
+using Microsoft.AspNetCore.Http.HttpResults;
+using Microsoft.AspNetCore.Mvc;
+using Microsoft.EntityFrameworkCore;
+using OnlyPrompt.Backend.ApiModels.Category;
+using OnlyPrompt.Backend.Database;
+using OnlyPrompt.Backend.Database.Models;
+using OnlyPrompt.Backend.Utils;
+using System.ComponentModel.DataAnnotations;
+
+namespace OnlyPrompt.Backend.Controllers
+{
+	[ApiController]
+	[Route("api/v1/categories")]
+	[Authorize(Roles = ModelConstants.AdminRole, AuthenticationSchemes = JwtBearerDefaults.AuthenticationScheme)]
+	public class CategoryController : BaseController
+	{
+		private static ValidationProblem SlugExistsProblem = TypedResults.ValidationProblem(new Dictionary<string, string[]>
+		{
+			{ nameof(CategoryModel.Slug), new[] { "Slug already exists." } }
+		});
+
+		public CategoryController(OnlyPromptContext db, IMapper mapper) : base(db, mapper)
+		{
+		}
+
+		[HttpGet("minimal")]
+		[Authorize(Roles = ModelConstants.UserRole)]
+		public async Task<ApiMinimalCategory[]> GetMinimalCategoriesAsync()
+		{
+			var categories = await _db.Categories
+				.ProjectTo<ApiMinimalCategory>(_mapper.ConfigurationProvider)
+				.ToArrayAsync();
+
+			return categories;
+		}
+
+		[HttpGet]
+		[Authorize(Roles = ModelConstants.UserRole)]
+		public async Task<ApiCategory[]> GetCategoriesAsync([Range(0, double.MaxValue)][FromQuery] int offset = 0, [Range(1, 100)][FromQuery] int limit = 20)
+		{
+			var categories = await _db.Categories
+				.OrderBy(c => c.Id)
+				.Skip(offset)
+				.Take(limit)
+				.ProjectTo<ApiCategory>(_mapper.ConfigurationProvider)
+				.ToArrayAsync();
+
+			return categories;
+		}
+
+		[HttpPost]
+		public async Task<Results<Ok<ApiCategory>, ValidationProblem>> CreateCategoryAsync([FromBody] ApiCreateCategoryRequest request)
+		{
+			var exists = await _db.Categories.AnyAsync(c => c.Slug == request.Slug);
+			if (exists)
+				return SlugExistsProblem;
+
+			var model = _mapper.Map<CategoryModel>(request);
+			if (string.IsNullOrWhiteSpace(model.Slug))
+				model.Slug = await SlugHelper.GenerateUniqueSlugAsync(request.Name, slug => _db.Categories.AnyAsync(c => c.Slug == slug), ModelConstants.MaxSlugLength);
+
+			_db.Categories.Add(model);
+			await _db.SaveChangesAsync();
+			return TypedResults.Ok(_mapper.Map<ApiCategory>(model));
+		}
+
+		[HttpPut("{id}")]
+		public async Task<Results<Ok<ApiCategory>, NotFound<string>, ValidationProblem>> UpdateCategoryAsync(Identifier id, [FromBody] ApiUpdateCategoryRequest request)
+		{
+			var category = await _db.Categories.FindByIdentifierAsync(id);
+			if (category is null)
+				return TypedResults.NotFound("Category not found");
+
+			if (string.IsNullOrWhiteSpace(request.Name) == false)
+				category.Name = request.Name;
+			
+			if(string.IsNullOrWhiteSpace(request.Description) == false)
+				category.Description = request.Description;
+
+			if (string.IsNullOrWhiteSpace(request.Slug) == false && request.Slug != category.Slug)
+			{
+				var exists = await _db.Categories.AnyAsync(c => c.Slug == request.Slug && c.Id != category.Id);
+				if (exists)
+					return SlugExistsProblem;
+
+				category.Slug = request.Slug;
+			}
+			
+			await _db.SaveChangesAsync();
+			return TypedResults.Ok(_mapper.Map<ApiCategory>(category));
+		}
+
+		[HttpDelete("{id}")]
+		public async Task<Results<NoContent, BadRequest<string>, NotFound<string>>> DeleteCategoryAsync(Identifier id, [FromQuery] Identifier? replaceWith = null)
+		{
+			var hasPrompts = await _db.Prompts.AnyAsync(p => p.CategoryId == id.Id);
+			if (hasPrompts)
+			{
+				if (replaceWith.HasValue == false)
+					return TypedResults.BadRequest("Category has associated prompts. Provide a replacement category to reassign them to.");
+
+				var replacement = await _db.Categories.FindByIdentifierAsync(replaceWith.Value);
+				if(replacement is null)
+					return TypedResults.NotFound("Replacement category not found.");
+
+				await _db.Prompts.Where(p => p.CategoryId == id.Id)
+					.ExecuteUpdateAsync(p => p.SetProperty(p => p.CategoryId, replacement.Id));
+			}
+
+			var count = await _db.Categories.OfIdentifer(id)
+				.ExecuteDeleteAsync();
+
+			if (count == 0)
+				return TypedResults.NotFound("Category not found");
+
+			return TypedResults.NoContent();
+		}
+	}
+}

OnlyPrompt.Backend/Controllers/FeedController.cs

@@ -21,7 +21,7 @@ namespace OnlyPrompt.Backend.Controllers
 
 		[HttpGet]
 		public async Task<ApiMinimalPrompt[]> GetFeedAsync(
-			[FromQuery]int offset = 0, 
+			[Range(0, double.MaxValue)][FromQuery]int offset = 0, 
 			[Range(1, 100)][FromQuery]int limit = 20,
 			[FromQuery]FeedSortType sortBy = FeedSortType.Date,
 			[FromQuery]bool ascending = false,
@@ -32,7 +32,10 @@ namespace OnlyPrompt.Backend.Controllers
 		{
 			var userId = User.GetUserId();
 			var query = _db.Prompts
-				.Where(x => x.Creator.Subscribers.Any(s => s.SubscriberId == userId));
+				.Where(
+					x => x.Creator.Subscribers.Any(s => s.SubscriberId == userId)
+					&& x.CreatorId != userId
+				);
 
 			if (category.HasValue)
 				query = query.Where(x => category.Value.Id.HasValue ? x.CategoryId == category.Value.Id.Value : x.Category.Slug == category.Value.Slug);

OnlyPrompt.Backend/Controllers/PromptController.cs

@@ -122,7 +122,7 @@ namespace OnlyPrompt.Backend.Controllers
 		}
 
 		[HttpPut("{id}/reviews")]
-		public async Task<Results<Ok<ApiReview>, NotFound<string>>> AddReviewAsync(Identifier id, [FromBody] ApiCreateReviewRequest request)
+		public async Task<Results<Ok<ApiReview>, BadRequest<string>, NotFound<string>>> AddReviewAsync(Identifier id, [FromBody] ApiCreateReviewRequest request)
 		{
 			var userId = User.GetUserId();
 			var prompt = await GetAccessiblePrompts(userId!.Value)
@@ -132,6 +132,9 @@ namespace OnlyPrompt.Backend.Controllers
 			if (prompt is null)
 				return TypedResults.NotFound("Prompt not found or no permission");
 
+			if(prompt.CreatorId == userId)
+				return TypedResults.BadRequest("Cannot review your own prompt");
+
 			var review = await _db.Reviews.FirstOrDefaultAsync(
 				r => r.PromptId == prompt.Id
 				&& r.ReviewerId == userId

OnlyPrompt.Backend/Controllers/SubscriptionController.cs

@@ -0,0 +1,180 @@
+using AutoMapper;
+using AutoMapper.QueryableExtensions;
+using Microsoft.AspNetCore.Authorization;
+using Microsoft.AspNetCore.Http.HttpResults;
+using Microsoft.AspNetCore.Mvc;
+using Microsoft.EntityFrameworkCore;
+using OnlyPrompt.Backend.ApiModels.Subscription;
+using OnlyPrompt.Backend.Database;
+using OnlyPrompt.Backend.Database.Models;
+using OnlyPrompt.Backend.Utils;
+using System.ComponentModel.DataAnnotations;
+using System.Formats.Asn1;
+
+namespace OnlyPrompt.Backend.Controllers
+{
+	[ApiController]
+	[Route("api/v1/subscriptions")]
+	[Authorize(Roles = ModelConstants.UserRole)]
+	public class SubscriptionController : BaseController
+	{
+		private static ValidationProblem TierLevelExistsProblem = TypedResults.ValidationProblem(new Dictionary<string, string[]>
+		{
+			{ nameof(SubscriptionTierModel.Level), new[] { "Tier with this level already exists." } }
+		});
+		public SubscriptionController(OnlyPromptContext db, IMapper mapper) : base(db, mapper)
+		{
+		}
+
+		[HttpPut("{userId}/{level}")]
+		public async Task<Results<Ok, BadRequest<string>, NotFound<string>>> SubscribeAsync(Identifier subscribeToId, int? level = null)
+		{
+			var userId = User.GetUserId();
+			var subscribeTo = await _db.Users.Include(x => x.SubscriptionTiers.Where(st => st.Level == level))
+			.FirstOrDefaultAsync(
+				user => subscribeToId.Id.HasValue ? user.Id == subscribeToId.Id.Value : user.Profile.Slug == subscribeToId.Slug
+			);
+
+			if (subscribeTo is null)
+				return TypedResults.NotFound($"No user found with identifier {subscribeToId}");
+
+			if (subscribeTo.Id == userId)
+				return TypedResults.BadRequest("Cannot subscribe to yourself");
+
+			SubscriptionTierModel? tier = subscribeTo.SubscriptionTiers.FirstOrDefault();
+			if (level.HasValue && tier is null)
+				return TypedResults.NotFound($"No subscription tier found for user {subscribeToId} with level {level.Value}");
+
+			var existingSubscription = await _db.Subscriptions.FirstOrDefaultAsync(
+				sub => subscribeToId.Id.HasValue ? sub.SubscribedToId == subscribeToId.Id.Value : sub.SubscribedTo.Profile.Slug == subscribeToId.Slug
+				&& sub.SubscriberId == userId
+			);
+
+			if (existingSubscription is null)
+			{
+				existingSubscription = new SubscriptionModel
+				{
+					SubscribedTo = subscribeTo,
+					SubscriberId = userId.Value,
+					SubscriptionTier = tier
+				};
+
+				_db.Subscriptions.Add(existingSubscription);
+			}
+			else
+			{
+				existingSubscription.SubscriptionTier = tier;
+			}
+
+			await _db.SaveChangesAsync();
+			return TypedResults.Ok();
+		}
+
+		[HttpGet]
+		public async Task<ApiSubscription[]> GetSubscriptionsAsync([Range(0, double.MaxValue)]int offset = 0, [Range(1, 100)]int limit = 20)
+		{
+			var userId = User.GetUserId();
+			var subscriptions = await _db.Subscriptions
+				.Where(x => x.SubscriberId == userId)
+				.OrderBy(x => x.SubscribedToId)
+				.Skip(offset)
+				.Take(limit)
+				.ProjectTo<ApiSubscription>(_mapper.ConfigurationProvider)
+				.ToArrayAsync();
+
+			return subscriptions;
+		}
+
+		[HttpGet("{userId}")]
+		public async Task<ApiSubscription?> GetCurrentSubscriptionAsync(Identifier subscribeToId)
+		{
+			var userId = User.GetUserId();
+			var subscription = await _db.Subscriptions
+				.Where(
+					sub => subscribeToId.Id.HasValue ? sub.SubscribedToId == subscribeToId.Id.Value : sub.SubscribedTo.Profile.Slug == subscribeToId.Slug
+					&& sub.SubscriberId == userId
+				)
+				.ProjectTo<ApiSubscription>(_mapper.ConfigurationProvider)
+				.FirstOrDefaultAsync();
+
+			return subscription;
+		}
+
+		[HttpDelete("{userId}")]
+		public async Task<Results<Ok, NotFound<string>>> UnsubscribeAsync(Identifier subscribeToId)
+		{
+			var userId = User.GetUserId();
+			var count = await _db.Subscriptions
+				.Where(
+					sub => subscribeToId.Id.HasValue ? sub.SubscribedToId == subscribeToId.Id.Value : sub.SubscribedTo.Profile.Slug == subscribeToId.Slug
+					&& sub.SubscriberId == userId
+				)
+				.ExecuteDeleteAsync();
+
+			if (count == 0)
+				return TypedResults.NotFound($"No subscription found for user {subscribeToId}");
+
+			return TypedResults.Ok();
+		}
+
+		[HttpPost("tiers")]
+		public async Task<Results<Ok<ApiSubscriptionTier>, ValidationProblem>> CreateOrUpdateSubscriptionTierAsync([FromBody] ApiCreateSubscriptionTierRequest tier)
+		{
+			var userId = User.GetUserId();
+			var levelExists = await _db.SubscriptionTiers.AnyAsync(t => t.UserId == userId && t.Level == tier.Level);
+			if (levelExists)
+				return TierLevelExistsProblem;
+
+			var model = _mapper.Map<SubscriptionTierModel>(tier);
+			model.UserId = userId!.Value;
+			_db.SubscriptionTiers.Add(model);
+			await _db.SaveChangesAsync();
+			return TypedResults.Ok(_mapper.Map<ApiSubscriptionTier>(model));
+		}
+
+		[HttpPut("tiers/{id}")]
+		public async Task<Results<Ok<ApiSubscriptionTier>, NotFound<string>, ValidationProblem>> UpdateSubscriptionTierAsync(Guid id, [FromBody] ApiUpdateSubscriptionTierRequest tier)
+		{
+			var userId = User.GetUserId();
+			var existingTier = await _db.SubscriptionTiers.FirstOrDefaultAsync(t => t.Id == id && t.UserId == userId);
+			if (existingTier is null)
+				return TypedResults.NotFound($"No subscription tier found with id {id}");
+
+			if (existingTier.Level != tier.Level)
+			{
+				var levelExists = await _db.SubscriptionTiers.AnyAsync(t => t.UserId == userId && t.Level == tier.Level);
+				if (levelExists)
+					return TierLevelExistsProblem;
+			}
+
+			if (string.IsNullOrEmpty(tier.Name) == false)
+				existingTier.Name = tier.Name;
+
+			if (string.IsNullOrEmpty(tier.Description) == false)
+				existingTier.Description = tier.Description;
+
+			if (tier.Level.HasValue)
+				existingTier.Level = tier.Level.Value;
+			
+			if (tier.MonthlyPrice.HasValue)
+				existingTier.MonthlyPrice = tier.MonthlyPrice.Value;
+			
+			await _db.SaveChangesAsync();
+			return TypedResults.Ok(_mapper.Map<ApiSubscriptionTier>(existingTier));
+		}
+
+		[HttpDelete("tiers/{id}")]
+		public async Task<Results<Ok, NotFound<string>>> DeleteSubscriptionTierAsync(Guid id)
+		{
+			var userId = User.GetUserId();
+			var count = await _db.SubscriptionTiers
+				.Where(t => t.Id == id && t.UserId == userId)
+				.ExecuteDeleteAsync();
+
+			if (count == 0)
+				return TypedResults.NotFound($"No subscription tier found with id {id}");
+
+			return TypedResults.Ok();
+		}
+	}
+}

OnlyPrompt.Backend/Database/Models/SubscriptionModel.cs

@@ -13,14 +13,14 @@ namespace OnlyPrompt.Backend.Database.Models
 		public Guid SubscribedToId { get; set; }
 
 		[DeleteBehavior(DeleteBehavior.Cascade)]
-		public required virtual UserModel SubscribedTo {  get; set; }
+		public virtual UserModel SubscribedTo { get; set; }
 
 		[Required]
 		[ForeignKey(nameof(Subscriber))]
 		public Guid SubscriberId { get; set; }
 
 		[DeleteBehavior(DeleteBehavior.Cascade)]
-		public required virtual UserModel Subscriber { get; set; }
+		public virtual UserModel Subscriber { get; set; }
 
 
 		[ForeignKey(nameof(SubscriptionTier))]

OnlyPrompt.Backend/Database/Models/SubscriptionTierModel.cs

@@ -19,7 +19,7 @@ namespace OnlyPrompt.Backend.Database.Models
 		public Guid UserId { get; set; }
 
 		[DeleteBehavior(DeleteBehavior.Cascade)]
-		public required virtual UserModel User { get; set; }
+		public virtual UserModel User { get; set; }
 
 		public decimal MonthlyPrice { get; set; }
 		public int Level { get; set; }

OnlyPrompt.Backend/Database/Models/UserModel.cs

@@ -24,6 +24,7 @@ namespace OnlyPrompt.Backend.Database.Models
 		public virtual IList<PromptModel> Prompts { get; set; } = new List<PromptModel>();
 		public virtual IList<SubscriptionModel> Subscriptions { get; set; } = new List<SubscriptionModel>();
 		public virtual IList<SubscriptionModel> Subscribers { get; set; } = new List<SubscriptionModel>();
+		public virtual IList<SubscriptionTierModel> SubscriptionTiers { get; set; } = new List<SubscriptionTierModel>();
 
 		public bool IsLockoutEnabled { get; set; } = false;
 	}

OnlyPrompt.Backend/Migrations/20260412002927_ReviewManyToMany.Designer.cs

@@ -0,0 +1,419 @@
+// <auto-generated />
+using System;
+using System.Collections.Generic;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Infrastructure;
+using Microsoft.EntityFrameworkCore.Migrations;
+using Microsoft.EntityFrameworkCore.Storage.ValueConversion;
+using Npgsql.EntityFrameworkCore.PostgreSQL.Metadata;
+using OnlyPrompt.Backend.Database;
+
+#nullable disable
+
+namespace OnlyPrompt.Backend.Migrations
+{
+    [DbContext(typeof(OnlyPromptContext))]
+    [Migration("20260412002927_ReviewManyToMany")]
+    partial class ReviewManyToMany
+    {
+        /// <inheritdoc />
+        protected override void BuildTargetModel(ModelBuilder modelBuilder)
+        {
+#pragma warning disable 612, 618
+            modelBuilder
+                .HasAnnotation("ProductVersion", "10.0.5")
+                .HasAnnotation("Proxies:ChangeTracking", false)
+                .HasAnnotation("Proxies:CheckEquality", false)
+                .HasAnnotation("Proxies:LazyLoading", true)
+                .HasAnnotation("Relational:MaxIdentifierLength", 63);
+
+            NpgsqlModelBuilderExtensions.HasPostgresExtension(modelBuilder, "citext");
+            NpgsqlModelBuilderExtensions.UseIdentityByDefaultColumns(modelBuilder);
+
+            modelBuilder.Entity("OnlyPrompt.Backend.Database.Models.CategoryModel", b =>
+                {
+                    b.Property<Guid>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("uuid");
+
+                    b.Property<DateTime>("CreatedAt")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<string>("Description")
+                        .HasColumnType("text");
+
+                    b.Property<string>("Name")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<string>("Slug")
+                        .IsRequired()
+                        .HasMaxLength(100)
+                        .HasColumnType("citext");
+
+                    b.Property<DateTime>("UpdatedAt")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("Slug")
+                        .IsUnique();
+
+                    b.ToTable("Categories");
+                });
+
+            modelBuilder.Entity("OnlyPrompt.Backend.Database.Models.PromptModel", b =>
+                {
+                    b.Property<Guid>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("uuid");
+
+                    b.Property<Guid>("CategoryId")
+                        .HasColumnType("uuid");
+
+                    b.Property<DateTime>("CreatedAt")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<Guid>("CreatorId")
+                        .HasColumnType("uuid");
+
+                    b.Property<string>("Description")
+                        .IsRequired()
+                        .HasMaxLength(1000)
+                        .HasColumnType("character varying(1000)");
+
+                    b.Property<string>("Prompt")
+                        .IsRequired()
+                        .HasMaxLength(4000)
+                        .HasColumnType("character varying(4000)");
+
+                    b.Property<string>("Slug")
+                        .IsRequired()
+                        .HasMaxLength(100)
+                        .HasColumnType("citext");
+
+                    b.Property<Guid?>("SubscriptionTierId")
+                        .HasColumnType("uuid");
+
+                    b.Property<string>("Title")
+                        .IsRequired()
+                        .HasMaxLength(200)
+                        .HasColumnType("character varying(200)");
+
+                    b.Property<DateTime>("UpdatedAt")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("CategoryId");
+
+                    b.HasIndex("CreatorId");
+
+                    b.HasIndex("Slug")
+                        .IsUnique();
+
+                    b.HasIndex("SubscriptionTierId");
+
+                    b.ToTable("Prompts");
+                });
+
+            modelBuilder.Entity("OnlyPrompt.Backend.Database.Models.ReviewModel", b =>
+                {
+                    b.Property<Guid>("ReviewerId")
+                        .HasColumnType("uuid");
+
+                    b.Property<Guid>("PromptId")
+                        .HasColumnType("uuid");
+
+                    b.Property<string>("Comment")
+                        .HasMaxLength(200)
+                        .HasColumnType("character varying(200)");
+
+                    b.Property<DateTime>("CreatedAt")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<int>("Rating")
+                        .HasColumnType("integer");
+
+                    b.Property<DateTime>("UpdatedAt")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.HasKey("ReviewerId", "PromptId");
+
+                    b.HasIndex("PromptId");
+
+                    b.ToTable("Reviews");
+                });
+
+            modelBuilder.Entity("OnlyPrompt.Backend.Database.Models.SubscriptionModel", b =>
+                {
+                    b.Property<Guid>("SubscriberId")
+                        .HasColumnType("uuid");
+
+                    b.Property<Guid>("SubscribedToId")
+                        .HasColumnType("uuid");
+
+                    b.Property<Guid?>("SubscriptionTierId")
+                        .HasColumnType("uuid");
+
+                    b.HasKey("SubscriberId", "SubscribedToId");
+
+                    b.HasIndex("SubscribedToId");
+
+                    b.HasIndex("SubscriptionTierId");
+
+                    b.ToTable("UserSubscriptions");
+                });
+
+            modelBuilder.Entity("OnlyPrompt.Backend.Database.Models.SubscriptionTierModel", b =>
+                {
+                    b.Property<Guid>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("uuid");
+
+                    b.Property<DateTime>("CreatedAt")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<string>("Description")
+                        .HasMaxLength(1000)
+                        .HasColumnType("character varying(1000)");
+
+                    b.Property<int>("Level")
+                        .HasColumnType("integer");
+
+                    b.Property<decimal>("MonthlyPrice")
+                        .HasColumnType("numeric");
+
+                    b.Property<string>("Name")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<DateTime>("UpdatedAt")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<Guid>("UserId")
+                        .HasColumnType("uuid");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("UserId");
+
+                    b.HasIndex("Level", "UserId")
+                        .IsUnique();
+
+                    b.ToTable("SubscriptionTiers");
+                });
+
+            modelBuilder.Entity("OnlyPrompt.Backend.Database.Models.UserModel", b =>
+                {
+                    b.Property<Guid>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("uuid");
+
+                    b.Property<DateTime>("CreatedAt")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<string>("Email")
+                        .IsRequired()
+                        .HasColumnType("citext");
+
+                    b.Property<bool>("IsLockoutEnabled")
+                        .HasColumnType("boolean");
+
+                    b.Property<string>("PasswordHash")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.PrimitiveCollection<List<string>>("Roles")
+                        .IsRequired()
+                        .HasColumnType("text[]");
+
+                    b.Property<DateTime>("UpdatedAt")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<string>("UserName")
+                        .IsRequired()
+                        .HasMaxLength(100)
+                        .HasColumnType("citext");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("Email")
+                        .IsUnique();
+
+                    b.HasIndex("UserName")
+                        .IsUnique();
+
+                    b.ToTable("Users");
+                });
+
+            modelBuilder.Entity("OnlyPrompt.Backend.Database.Models.UserProfileModel", b =>
+                {
+                    b.Property<Guid>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("uuid");
+
+                    b.Property<string>("AvatarUrl")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<string>("Bio")
+                        .HasMaxLength(2000)
+                        .HasColumnType("character varying(2000)");
+
+                    b.Property<DateTime>("CreatedAt")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<string>("DisplayName")
+                        .IsRequired()
+                        .HasMaxLength(100)
+                        .HasColumnType("character varying(100)");
+
+                    b.Property<bool>("IsPublic")
+                        .HasColumnType("boolean");
+
+                    b.Property<string>("Slug")
+                        .IsRequired()
+                        .HasMaxLength(100)
+                        .HasColumnType("citext");
+
+                    b.Property<string>("Specialities")
+                        .HasMaxLength(200)
+                        .HasColumnType("character varying(200)");
+
+                    b.Property<DateTime>("UpdatedAt")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("Slug")
+                        .IsUnique();
+
+                    b.ToTable("UserProfiles");
+                });
+
+            modelBuilder.Entity("OnlyPrompt.Backend.Database.Models.PromptModel", b =>
+                {
+                    b.HasOne("OnlyPrompt.Backend.Database.Models.CategoryModel", "Category")
+                        .WithMany("Prompts")
+                        .HasForeignKey("CategoryId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.HasOne("OnlyPrompt.Backend.Database.Models.UserModel", "Creator")
+                        .WithMany("Prompts")
+                        .HasForeignKey("CreatorId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.HasOne("OnlyPrompt.Backend.Database.Models.SubscriptionTierModel", "SubscriptionTier")
+                        .WithMany("Prompts")
+                        .HasForeignKey("SubscriptionTierId")
+                        .OnDelete(DeleteBehavior.SetNull);
+
+                    b.Navigation("Category");
+
+                    b.Navigation("Creator");
+
+                    b.Navigation("SubscriptionTier");
+                });
+
+            modelBuilder.Entity("OnlyPrompt.Backend.Database.Models.ReviewModel", b =>
+                {
+                    b.HasOne("OnlyPrompt.Backend.Database.Models.PromptModel", "Prompt")
+                        .WithMany("Reviews")
+                        .HasForeignKey("PromptId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.HasOne("OnlyPrompt.Backend.Database.Models.UserModel", "Reviewer")
+                        .WithMany()
+                        .HasForeignKey("ReviewerId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("Prompt");
+
+                    b.Navigation("Reviewer");
+                });
+
+            modelBuilder.Entity("OnlyPrompt.Backend.Database.Models.SubscriptionModel", b =>
+                {
+                    b.HasOne("OnlyPrompt.Backend.Database.Models.UserModel", "SubscribedTo")
+                        .WithMany("Subscribers")
+                        .HasForeignKey("SubscribedToId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.HasOne("OnlyPrompt.Backend.Database.Models.UserModel", "Subscriber")
+                        .WithMany("Subscriptions")
+                        .HasForeignKey("SubscriberId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.HasOne("OnlyPrompt.Backend.Database.Models.SubscriptionTierModel", "SubscriptionTier")
+                        .WithMany("Subscriptions")
+                        .HasForeignKey("SubscriptionTierId")
+                        .OnDelete(DeleteBehavior.SetNull);
+
+                    b.Navigation("SubscribedTo");
+
+                    b.Navigation("Subscriber");
+
+                    b.Navigation("SubscriptionTier");
+                });
+
+            modelBuilder.Entity("OnlyPrompt.Backend.Database.Models.SubscriptionTierModel", b =>
+                {
+                    b.HasOne("OnlyPrompt.Backend.Database.Models.UserModel", "User")
+                        .WithMany()
+                        .HasForeignKey("UserId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("User");
+                });
+
+            modelBuilder.Entity("OnlyPrompt.Backend.Database.Models.UserProfileModel", b =>
+                {
+                    b.HasOne("OnlyPrompt.Backend.Database.Models.UserModel", "User")
+                        .WithOne("Profile")
+                        .HasForeignKey("OnlyPrompt.Backend.Database.Models.UserProfileModel", "Id")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("User");
+                });
+
+            modelBuilder.Entity("OnlyPrompt.Backend.Database.Models.CategoryModel", b =>
+                {
+                    b.Navigation("Prompts");
+                });
+
+            modelBuilder.Entity("OnlyPrompt.Backend.Database.Models.PromptModel", b =>
+                {
+                    b.Navigation("Reviews");
+                });
+
+            modelBuilder.Entity("OnlyPrompt.Backend.Database.Models.SubscriptionTierModel", b =>
+                {
+                    b.Navigation("Prompts");
+
+                    b.Navigation("Subscriptions");
+                });
+
+            modelBuilder.Entity("OnlyPrompt.Backend.Database.Models.UserModel", b =>
+                {
+                    b.Navigation("Profile")
+                        .IsRequired();
+
+                    b.Navigation("Prompts");
+
+                    b.Navigation("Subscribers");
+
+                    b.Navigation("Subscriptions");
+                });
+#pragma warning restore 612, 618
+        }
+    }
+}

OnlyPrompt.Backend/Migrations/20260412002927_ReviewManyToMany.cs

@@ -0,0 +1,93 @@
+using System;
+using Microsoft.EntityFrameworkCore.Migrations;
+
+#nullable disable
+
+namespace OnlyPrompt.Backend.Migrations
+{
+    /// <inheritdoc />
+    public partial class ReviewManyToMany : Migration
+    {
+        /// <inheritdoc />
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DropPrimaryKey(
+                name: "PK_Reviews",
+                table: "Reviews");
+
+            migrationBuilder.DropIndex(
+                name: "IX_Reviews_ReviewerId_PromptId",
+                table: "Reviews");
+
+            migrationBuilder.DropColumn(
+                name: "Id",
+                table: "Reviews");
+
+            migrationBuilder.DropColumn(
+                name: "Content",
+                table: "Prompts");
+
+            migrationBuilder.AddColumn<string>(
+                name: "Description",
+                table: "Prompts",
+                type: "character varying(1000)",
+                maxLength: 1000,
+                nullable: false,
+                defaultValue: "");
+
+            migrationBuilder.AddColumn<string>(
+                name: "Prompt",
+                table: "Prompts",
+                type: "character varying(4000)",
+                maxLength: 4000,
+                nullable: false,
+                defaultValue: "");
+
+            migrationBuilder.AddPrimaryKey(
+                name: "PK_Reviews",
+                table: "Reviews",
+                columns: new[] { "ReviewerId", "PromptId" });
+        }
+
+        /// <inheritdoc />
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DropPrimaryKey(
+                name: "PK_Reviews",
+                table: "Reviews");
+
+            migrationBuilder.DropColumn(
+                name: "Description",
+                table: "Prompts");
+
+            migrationBuilder.DropColumn(
+                name: "Prompt",
+                table: "Prompts");
+
+            migrationBuilder.AddColumn<Guid>(
+                name: "Id",
+                table: "Reviews",
+                type: "uuid",
+                nullable: false,
+                defaultValue: new Guid("00000000-0000-0000-0000-000000000000"));
+
+            migrationBuilder.AddColumn<string>(
+                name: "Content",
+                table: "Prompts",
+                type: "text",
+                nullable: false,
+                defaultValue: "");
+
+            migrationBuilder.AddPrimaryKey(
+                name: "PK_Reviews",
+                table: "Reviews",
+                column: "Id");
+
+            migrationBuilder.CreateIndex(
+                name: "IX_Reviews_ReviewerId_PromptId",
+                table: "Reviews",
+                columns: new[] { "ReviewerId", "PromptId" },
+                unique: true);
+        }
+    }
+}

OnlyPrompt.Backend/Migrations/OnlyPromptContextModelSnapshot.cs

@@ -1,5 +1,6 @@
 // <auto-generated />
 using System;
+using System.Collections.Generic;
 using Microsoft.EntityFrameworkCore;
 using Microsoft.EntityFrameworkCore.Infrastructure;
 using Microsoft.EntityFrameworkCore.Storage.ValueConversion;
@@ -67,16 +68,22 @@ namespace OnlyPrompt.Backend.Migrations
                     b.Property<Guid>("CategoryId")
                         .HasColumnType("uuid");
 
-                    b.Property<string>("Content")
-                        .IsRequired()
-                        .HasColumnType("text");
-
                     b.Property<DateTime>("CreatedAt")
                         .HasColumnType("timestamp with time zone");
 
                     b.Property<Guid>("CreatorId")
                         .HasColumnType("uuid");
 
+                    b.Property<string>("Description")
+                        .IsRequired()
+                        .HasMaxLength(1000)
+                        .HasColumnType("character varying(1000)");
+
+                    b.Property<string>("Prompt")
+                        .IsRequired()
+                        .HasMaxLength(4000)
+                        .HasColumnType("character varying(4000)");
+
                     b.Property<string>("Slug")
                         .IsRequired()
                         .HasMaxLength(100)
@@ -109,8 +116,10 @@ namespace OnlyPrompt.Backend.Migrations
 
             modelBuilder.Entity("OnlyPrompt.Backend.Database.Models.ReviewModel", b =>
                 {
-                    b.Property<Guid>("Id")
+                    b.Property<Guid>("ReviewerId")
-                        .ValueGeneratedOnAdd()
+                        .HasColumnType("uuid");
+
+                    b.Property<Guid>("PromptId")
                         .HasColumnType("uuid");
 
                     b.Property<string>("Comment")
@@ -120,25 +129,16 @@ namespace OnlyPrompt.Backend.Migrations
                     b.Property<DateTime>("CreatedAt")
                         .HasColumnType("timestamp with time zone");
 
-                    b.Property<Guid>("PromptId")
-                        .HasColumnType("uuid");
-
                     b.Property<int>("Rating")
                         .HasColumnType("integer");
 
-                    b.Property<Guid>("ReviewerId")
-                        .HasColumnType("uuid");
-
                     b.Property<DateTime>("UpdatedAt")
                         .HasColumnType("timestamp with time zone");
 
-                    b.HasKey("Id");
+                    b.HasKey("ReviewerId", "PromptId");
 
                     b.HasIndex("PromptId");
 
-                    b.HasIndex("ReviewerId", "PromptId")
-                        .IsUnique();
-
                     b.ToTable("Reviews");
                 });
 
@@ -221,7 +221,7 @@ namespace OnlyPrompt.Backend.Migrations
                         .IsRequired()
                         .HasColumnType("text");
 
-                    b.PrimitiveCollection<string[]>("Roles")
+                    b.PrimitiveCollection<List<string>>("Roles")
                         .IsRequired()
                         .HasColumnType("text[]");
 

OnlyPrompt.Backend/Program.cs

@@ -2,15 +2,18 @@ using Microsoft.AspNetCore.Authentication;
 using Microsoft.AspNetCore.Authentication.JwtBearer;
 using Microsoft.AspNetCore.Identity;
 using Microsoft.EntityFrameworkCore;
+using Microsoft.Extensions.Options;
 using Microsoft.Identity.Web;
+using Microsoft.IdentityModel.Tokens;
 using OnlyPrompt.Backend.Database;
 using OnlyPrompt.Backend.Database.Models;
 using OnlyPrompt.Backend.Services.Jwt;
 using OnlyPrompt.Backend.Utils;
 using Scalar.AspNetCore;
+using System.Text;
 
 var builder = WebApplication.CreateBuilder(args);
-
+var config = builder.Configuration;
 // Add services to the container.
 builder.Services.AddAuthentication(JwtBearerDefaults.AuthenticationScheme);
 builder.Services.AddDbContext<OnlyPromptContext>(opts =>
@@ -26,6 +29,16 @@ builder.Services.AddAutoMapper(AutoMapperSetup.Setup);
 builder.Services.AddAuthorization();
 builder.Services.AddAuthentication(JwtBearerDefaults.AuthenticationScheme)
 	.AddJwtBearer(JwtBearerDefaults.AuthenticationScheme, opts => {
+		opts.TokenValidationParameters = new TokenValidationParameters
+		{
+			ValidateIssuer = true,
+			ValidateAudience = true,
+			ValidateLifetime = true,
+			ValidateIssuerSigningKey = true,
+			ValidIssuer = config["Jwt:Issuer"],
+			ValidAudience = config["Jwt:Audience"],
+			IssuerSigningKey = new SymmetricSecurityKey(Encoding.UTF8.GetBytes(config["Jwt:Key"]))
+		};
 		opts.Events = new JwtBearerEvents
 		{
 			OnMessageReceived = context =>
@@ -56,4 +69,8 @@ app.UseAuthorization();
 
 app.MapControllers();
 
+using var scope = app.Services.CreateScope();
+var db = scope.ServiceProvider.GetRequiredService<OnlyPromptContext>();
+await db.Database.MigrateAsync();
+
 app.Run();

OnlyPrompt.Backend/Utils/AutoMapperSetup.cs

@@ -1,6 +1,8 @@
 using AutoMapper;
 using OnlyPrompt.Backend.ApiModels.Auth;
+using OnlyPrompt.Backend.ApiModels.Category;
 using OnlyPrompt.Backend.ApiModels.Prompt;
+using OnlyPrompt.Backend.ApiModels.Subscription;
 using OnlyPrompt.Backend.ApiModels.UserProfile;
 using OnlyPrompt.Backend.Database.Models;
 
@@ -45,13 +47,47 @@ namespace OnlyPrompt.Backend.Utils
 				.MapCtorParamFrom(x => x.CreatorId, x => x.CreatorId)
 				.MapCtorParamFrom(x => x.TierLevel, x => x.SubscriptionTier == null ? (int?)null : x.SubscriptionTier.Level)
 				.MapCtorParamFrom(x => x.TierName, x => x.SubscriptionTier == null ? null : x.SubscriptionTier.Name)
-				.MapCtorParamFrom(x => x.AverageRating, x => x.Reviews.Average(r => (double?)r.Rating));
+				.MapCtorParamFrom(x => x.AverageRating, x => x.Reviews.Average(r => (double?)r.Rating))
+				.MapCtorParamFrom(x => x.CanAccess, x => true);
 
 			config.CreateMap<ReviewModel, ApiReview>()
 				.MapCtorParamFrom(x => x.CreatorId, x => x.ReviewerId)
 				.MapCtorParamFrom(x => x.CreatorName, x => x.Reviewer.Profile.DisplayName)
 				.MapCtorParamFrom(x => x.Comment, x => x.Comment)
 				.MapCtorParamFrom(x => x.Rating, x => x.Rating);
+
+			config.CreateMap<CategoryModel, ApiCategory>()
+				.MapCtorParamFrom(x => x.Id, x => x.Id)
+				.MapCtorParamFrom(x => x.Name, x => x.Name)
+				.MapCtorParamFrom(x => x.Description, x => x.Description)
+				.MapCtorParamFrom(x => x.Slug, x => x.Slug);
+
+			config.CreateMap<CategoryModel, ApiMinimalCategory>()
+				.MapCtorParamFrom(x => x.Name, x => x.Name)
+				.MapCtorParamFrom(x => x.Slug, x => x.Slug);
+
+			config.CreateMap<ApiCreateCategoryRequest, CategoryModel>()
+				.MapMemberFrom(x => x.Description, x => x.Description)
+				.MapMemberFrom(x => x.Name, x => x.Name)
+				.MapMemberFrom(x => x.Slug, x => x.Slug);
+
+			config.CreateMap<SubscriptionTierModel, ApiSubscriptionTier>()
+				.MapCtorParamFrom(x => x.Id, x => x.Id)
+				.MapCtorParamFrom(x => x.Name, x => x.Name)
+				.MapCtorParamFrom(x => x.Level, x => x.Level)
+				.MapCtorParamFrom(x => x.MonthlyPrice, x => x.MonthlyPrice)
+				.MapCtorParamFrom(x => x.Description, x => x.Description);
+
+			config.CreateMap<ApiCreateSubscriptionTierRequest, SubscriptionTierModel>()
+				.MapMemberFrom(x => x.Name, x => x.Name)
+				.MapMemberFrom(x => x.Level, x => x.Level)
+				.MapMemberFrom(x => x.MonthlyPrice, x => x.MonthlyPrice)
+				.MapMemberFrom(x => x.Description, x => x.Description);
+
+			config.CreateMap<SubscriptionModel, ApiSubscription>()
+				.MapCtorParamFrom(x => x.SubscribedToId, x => x.SubscribedToId)
+				.MapCtorParamFrom(x => x.SubscribedToName, x => x.SubscribedTo.Profile.DisplayName)
+				.MapCtorParamFrom(x => x.CurrentTier, x => x.SubscriptionTier);
 		}
 	}
 }

OnlyPrompt.Backend/Utils/SlugHelper.cs

@@ -16,16 +16,27 @@ namespace OnlyPrompt.Backend.Utils
 			slug = InvalidCharacters.Replace(slug, string.Empty);
 			slug = MultipleDashes.Replace(slug, "-");
 			slug = slug.Trim('-');
+			if (maxLength.HasValue)
+				slug = slug.Limit(maxLength.Value);
+
 			return slug;
 		}
 
 		private const string SuffixChars = "abcdefghijklmnopqrstuvwxyz0123456789";
 		public static async Task<string> GenerateUniqueSlugAsync(string input, Func<string, Task<bool>> existsFunc, int? maxLenght)
 		{
-			var baseSlug = GenerateSlug(input, maxLenght - 9); 
+			var slug = GenerateSlug(input);
-			var slug = baseSlug;
+			var exists = await existsFunc(slug);
-			var suffix = Random.Shared.GetString(8, SuffixChars);	
+			if (exists)
-			return $"{slug}-{suffix}";
+			{
+				var suffix = Random.Shared.GetString(8, SuffixChars);
+				if (maxLenght.HasValue)
+					slug = slug.Limit(maxLenght.Value - 9);
+
+				slug = $"{slug}-{suffix}";
+			}
+
+			return slug;
 		}
 	}
 }

OnlyPrompt.Backend/appsettings.json

@@ -1,6 +1,6 @@
 {
   "ConnectionStrings": {
-    "DefaultConnection": "Include Error Detail=true;User ID=onlyprompt;Password=onlyprompt;Host=postgres;Port=1803;Database=onlyprompt;Pooling=true;MinPoolSize=0;MaxPoolSize=100;Connection Lifetime=0;"
+    "DefaultConnection": "Include Error Detail=true;User ID=onlyprompt;Password=onlyprompt;Host=localhost;Port=1803;Database=onlyprompt;Pooling=true;MinPoolSize=0;MaxPoolSize=100;Connection Lifetime=0;"
   },
   "Jwt": {
     "Issuer": "https://onlyprompts.com",