Convert Documents module to MediatR commands/queries

Replaces IDocumentService/DocumentService. The permission-check and
descendant-deletion logic moves to a shared DocumentAccess static
helper used by all seven handlers.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

mws.api/Controllers/DocumentsController.cs

@@ -1,3 +1,4 @@
+using MediatR;
 using Microsoft.AspNetCore.Authorization;
 using Microsoft.AspNetCore.Mvc;
 using Mws.Application.Documents;
@@ -7,50 +8,50 @@ namespace Mws.Api.Controllers;
 [ApiController]
 [Route("api")]
 [Authorize]
-public class DocumentsController(IDocumentService documentService) : ControllerBase
+public class DocumentsController(ISender sender) : ControllerBase
 {
     [HttpGet("documents/search")]
     public async Task<ActionResult<List<DocumentNodeDto>>> Search([FromQuery] string? q, CancellationToken ct)
     {
-        return Ok(await documentService.SearchAsync(User.GetUserId(), q ?? string.Empty, ct));
+        return Ok(await sender.Send(new SearchDocumentsQuery(User.GetUserId(), q ?? string.Empty), ct));
     }
 
     [HttpGet("projects/{projectId:guid}/documents")]
     public async Task<ActionResult<List<DocumentNodeDto>>> GetTree(Guid projectId, CancellationToken ct)
     {
-        return Ok(await documentService.GetTreeAsync(User.GetUserId(), projectId, ct));
+        return Ok(await sender.Send(new GetDocumentTreeQuery(User.GetUserId(), projectId), ct));
     }
 
     [HttpPost("projects/{projectId:guid}/documents")]
     public async Task<ActionResult<DocumentDto>> Create(Guid projectId, [FromBody] CreateDocumentRequest request, CancellationToken ct)
     {
-        var result = await documentService.CreateAsync(User.GetUserId(), projectId, request, ct);
+        var result = await sender.Send(new CreateDocumentCommand(User.GetUserId(), projectId, request), ct);
         return CreatedAtAction(nameof(Get), new { id = result.Id }, result);
     }
 
     [HttpGet("documents/{id:guid}")]
     public async Task<ActionResult<DocumentDto>> Get(Guid id, CancellationToken ct)
     {
-        return Ok(await documentService.GetAsync(User.GetUserId(), id, ct));
+        return Ok(await sender.Send(new GetDocumentQuery(User.GetUserId(), id), ct));
     }
 
     [HttpPut("documents/{id:guid}")]
     public async Task<ActionResult<DocumentDto>> Update(Guid id, [FromBody] UpdateDocumentRequest request, CancellationToken ct)
     {
-        return Ok(await documentService.UpdateAsync(User.GetUserId(), id, request, ct));
+        return Ok(await sender.Send(new UpdateDocumentCommand(User.GetUserId(), id, request), ct));
     }
 
     [HttpPut("documents/{id:guid}/move")]
     public async Task<ActionResult<DocumentDto>> Move(Guid id, [FromBody] MoveDocumentRequest request, CancellationToken ct)
     {
-        await documentService.MoveAsync(User.GetUserId(), id, request.NewParentId, ct);
-        return Ok(await documentService.GetAsync(User.GetUserId(), id, ct));
+        await sender.Send(new MoveDocumentCommand(User.GetUserId(), id, request.NewParentId), ct);
+        return Ok(await sender.Send(new GetDocumentQuery(User.GetUserId(), id), ct));
     }
 
     [HttpDelete("documents/{id:guid}")]
     public async Task<IActionResult> Delete(Guid id, CancellationToken ct)
     {
-        await documentService.DeleteAsync(User.GetUserId(), id, ct);
+        await sender.Send(new DeleteDocumentCommand(User.GetUserId(), id), ct);
         return NoContent();
     }
 }

mws.application/Documents/Commands/CreateDocument.cs

@@ -0,0 +1,57 @@
+using AutoMapper;
+using MediatR;
+using Mws.Application.Common;
+using Mws.Application.Permissions;
+using Mws.Domain.Documents;
+
+namespace Mws.Application.Documents;
+
+public record CreateDocumentCommand(Guid UserId, Guid ProjectId, CreateDocumentRequest Request) : IRequest<DocumentDto>;
+
+public class CreateDocumentHandler(IUnitOfWork uow, IMapper mapper) : IRequestHandler<CreateDocumentCommand, DocumentDto>
+{
+    public async Task<DocumentDto> Handle(CreateDocumentCommand command, CancellationToken ct)
+    {
+        await DocumentAccess.EnsureDocumentPermissionAsync(uow, command.UserId, command.ProjectId, PermissionAction.Create, ct);
+
+        var request = command.Request;
+        if (string.IsNullOrWhiteSpace(request.Title))
+        {
+            throw new BadRequestException("Title is required");
+        }
+
+        if (request.ParentId is { } parentId)
+        {
+            var parent = await uow.Documents.GetInProjectAsync(parentId, command.ProjectId, ct)
+                ?? throw new BadRequestException("Parent document not found");
+            if (parent.Type != DocumentType.Folder)
+            {
+                throw new BadRequestException("Parent must be a folder");
+            }
+        }
+
+        if (request.Type == DocumentType.Folder && !string.IsNullOrWhiteSpace(request.Content))
+        {
+            throw new BadRequestException("Folders cannot have content");
+        }
+
+        var now = DateTime.UtcNow;
+        var doc = new Document
+        {
+            Id = Guid.NewGuid(),
+            ProjectId = command.ProjectId,
+            ParentId = request.ParentId,
+            Title = request.Title.Trim(),
+            Type = request.Type,
+            Content = request.Type == DocumentType.Document ? request.Content : null,
+            CreatedBy = command.UserId,
+            CreatedAt = now,
+            UpdatedBy = command.UserId,
+            UpdatedAt = now,
+        };
+
+        uow.Documents.Add(doc);
+        await uow.SaveChangesAsync(ct);
+        return mapper.Map<DocumentDto>(doc);
+    }
+}

mws.application/Documents/Commands/DeleteDocument.cs

@@ -0,0 +1,20 @@
+using MediatR;
+using Mws.Application.Common;
+using Mws.Application.Permissions;
+
+namespace Mws.Application.Documents;
+
+public record DeleteDocumentCommand(Guid UserId, Guid DocumentId) : IRequest;
+
+public class DeleteDocumentHandler(IUnitOfWork uow) : IRequestHandler<DeleteDocumentCommand>
+{
+    public async Task Handle(DeleteDocumentCommand command, CancellationToken ct)
+    {
+        var doc = await DocumentAccess.GetDocumentForUserAsync(uow, command.UserId, command.DocumentId, ct);
+        await DocumentAccess.EnsureDocumentPermissionAsync(uow, command.UserId, doc.ProjectId, PermissionAction.Delete, ct);
+
+        await DocumentAccess.DeleteDescendantsAsync(uow, command.DocumentId, ct);
+        uow.Documents.Remove(doc);
+        await uow.SaveChangesAsync(ct);
+    }
+}

mws.application/Documents/Commands/MoveDocument.cs

@@ -0,0 +1,51 @@
+using MediatR;
+using Mws.Application.Common;
+using Mws.Application.Permissions;
+using Mws.Domain.Documents;
+
+namespace Mws.Application.Documents;
+
+public record MoveDocumentCommand(Guid UserId, Guid DocumentId, Guid? NewParentId) : IRequest;
+
+public class MoveDocumentHandler(IUnitOfWork uow) : IRequestHandler<MoveDocumentCommand>
+{
+    public async Task Handle(MoveDocumentCommand command, CancellationToken ct)
+    {
+        var doc = await DocumentAccess.GetDocumentForUserAsync(uow, command.UserId, command.DocumentId, ct);
+        await DocumentAccess.EnsureDocumentPermissionAsync(uow, command.UserId, doc.ProjectId, PermissionAction.Edit, ct);
+
+        if (command.NewParentId == command.DocumentId)
+        {
+            throw new BadRequestException("A document cannot be moved into itself");
+        }
+
+        if (command.NewParentId is { } parentId)
+        {
+            var parent = await uow.Documents.GetByIdAsync(parentId, ct)
+                ?? throw new NotFoundException("Parent folder not found");
+            if (parent.ProjectId != doc.ProjectId)
+            {
+                throw new BadRequestException("Parent must belong to the same project");
+            }
+            if (parent.Type != DocumentType.Folder)
+            {
+                throw new BadRequestException("Parent must be a folder");
+            }
+
+            var cursor = parent.ParentId;
+            while (cursor is not null)
+            {
+                if (cursor == command.DocumentId)
+                {
+                    throw new BadRequestException("A folder cannot be moved into its own descendant");
+                }
+                cursor = await uow.Documents.GetParentIdAsync(cursor.Value, ct);
+            }
+        }
+
+        doc.ParentId = command.NewParentId;
+        doc.UpdatedAt = DateTime.UtcNow;
+        doc.UpdatedBy = command.UserId;
+        await uow.SaveChangesAsync(ct);
+    }
+}

mws.application/Documents/Commands/UpdateDocument.cs

@@ -0,0 +1,40 @@
+using AutoMapper;
+using MediatR;
+using Mws.Application.Common;
+using Mws.Application.Permissions;
+using Mws.Domain.Documents;
+
+namespace Mws.Application.Documents;
+
+public record UpdateDocumentCommand(Guid UserId, Guid DocumentId, UpdateDocumentRequest Request) : IRequest<DocumentDto>;
+
+public class UpdateDocumentHandler(IUnitOfWork uow, IMapper mapper) : IRequestHandler<UpdateDocumentCommand, DocumentDto>
+{
+    public async Task<DocumentDto> Handle(UpdateDocumentCommand command, CancellationToken ct)
+    {
+        var doc = await DocumentAccess.GetDocumentForUserAsync(uow, command.UserId, command.DocumentId, ct);
+        await DocumentAccess.EnsureDocumentPermissionAsync(uow, command.UserId, doc.ProjectId, PermissionAction.Edit, ct);
+
+        var request = command.Request;
+        if (string.IsNullOrWhiteSpace(request.Title))
+        {
+            throw new BadRequestException("Title is required");
+        }
+
+        doc.Title = request.Title.Trim();
+        if (doc.Type == DocumentType.Document)
+        {
+            doc.Content = request.Content;
+            doc.UpdatedAt = DateTime.UtcNow;
+            doc.UpdatedBy = command.UserId;
+        }
+        else
+        {
+            doc.UpdatedAt = DateTime.UtcNow;
+            doc.UpdatedBy = command.UserId;
+        }
+
+        await uow.SaveChangesAsync(ct);
+        return mapper.Map<DocumentDto>(doc);
+    }
+}

mws.application/Documents/DocumentAccess.cs

@@ -0,0 +1,71 @@
+using Mws.Application.Common;
+using Mws.Application.Permissions;
+using Mws.Domain.Documents;
+using Mws.Domain.Projects;
+
+namespace Mws.Application.Documents;
+
+internal static class DocumentAccess
+{
+    public static async Task EnsureDocumentPermissionAsync(
+        IUnitOfWork uow, Guid userId, Guid projectId, PermissionAction action, CancellationToken ct)
+    {
+        var member = await uow.Projects.GetMemberAsync(projectId, userId, ct)
+            ?? throw new NotFoundException("Project not found");
+
+        if (!await HasDocumentPermissionAsync(uow, member, action, ct))
+        {
+            throw new ForbiddenException("You do not have permission to access documents in this project");
+        }
+    }
+
+    public static async Task<bool> HasDocumentPermissionAsync(
+        IUnitOfWork uow, ProjectMember member, PermissionAction action, CancellationToken ct)
+    {
+        if (member.Role == MemberRole.Owner)
+        {
+            return true;
+        }
+
+        var permission = await uow.Projects.GetMemberPermissionAsync(member.ProjectId, member.UserId, ProjectPermissionScreens.Documents, ct);
+
+        return action switch
+        {
+            PermissionAction.View => permission?.CanView ?? false,
+            PermissionAction.Create => permission?.CanCreate ?? false,
+            PermissionAction.Edit => permission?.CanEdit ?? false,
+            PermissionAction.Delete => permission?.CanDelete ?? false,
+            _ => false,
+        };
+    }
+
+    public static async Task<Document> GetDocumentForUserAsync(IUnitOfWork uow, Guid userId, Guid documentId, CancellationToken ct)
+    {
+        var doc = await uow.Documents.GetByIdAsync(documentId, ct)
+            ?? throw new NotFoundException("Document not found");
+
+        var member = await uow.Projects.GetMemberAsync(doc.ProjectId, userId, ct);
+
+        if (member is null)
+        {
+            throw new NotFoundException("Document not found");
+        }
+
+        if (!await HasDocumentPermissionAsync(uow, member, PermissionAction.View, ct))
+        {
+            throw new ForbiddenException("You do not have permission to view this document");
+        }
+
+        return doc;
+    }
+
+    public static async Task DeleteDescendantsAsync(IUnitOfWork uow, Guid parentId, CancellationToken ct)
+    {
+        var children = await uow.Documents.GetChildrenAsync(parentId, ct);
+        foreach (var child in children)
+        {
+            await DeleteDescendantsAsync(uow, child.Id, ct);
+            uow.Documents.Remove(child);
+        }
+    }
+}

mws.application/Documents/DocumentService.cs

@@ -1,229 +0,0 @@
-using AutoMapper;
-using Mws.Application.Common;
-using Mws.Application.Permissions;
-using Mws.Domain.Documents;
-using Mws.Domain.Projects;
-
-namespace Mws.Application.Documents;
-
-public class DocumentService(IUnitOfWork uow, IMapper mapper) : IDocumentService
-{
-    public async Task<List<DocumentNodeDto>> GetTreeAsync(Guid userId, Guid projectId, CancellationToken ct = default)
-    {
-        await EnsureDocumentPermissionAsync(userId, projectId, PermissionAction.View, ct);
-
-        var docs = await uow.Documents.GetTreeForProjectAsync(projectId, ct);
-
-        var nodes = docs.ToDictionary(d => d.Id, d => mapper.Map<DocumentNodeDto>(d));
-
-        var roots = new List<DocumentNodeDto>();
-        foreach (var node in nodes.Values)
-        {
-            if (node.ParentId is { } parentId && nodes.TryGetValue(parentId, out var parent))
-            {
-                parent.Children.Add(node);
-            }
-            else
-            {
-                roots.Add(node);
-            }
-        }
-
-        return roots;
-    }
-
-    public async Task<DocumentDto> GetAsync(Guid userId, Guid documentId, CancellationToken ct = default)
-    {
-        var doc = await GetDocumentForUserAsync(userId, documentId, ct);
-        return mapper.Map<DocumentDto>(doc);
-    }
-
-    public async Task<DocumentDto> CreateAsync(Guid userId, Guid projectId, CreateDocumentRequest request, CancellationToken ct = default)
-    {
-        await EnsureDocumentPermissionAsync(userId, projectId, PermissionAction.Create, ct);
-
-        if (string.IsNullOrWhiteSpace(request.Title))
-        {
-            throw new BadRequestException("Title is required");
-        }
-
-        if (request.ParentId is { } parentId)
-        {
-            var parent = await uow.Documents.GetInProjectAsync(parentId, projectId, ct)
-                ?? throw new BadRequestException("Parent document not found");
-            if (parent.Type != DocumentType.Folder)
-            {
-                throw new BadRequestException("Parent must be a folder");
-            }
-        }
-
-        if (request.Type == DocumentType.Folder && !string.IsNullOrWhiteSpace(request.Content))
-        {
-            throw new BadRequestException("Folders cannot have content");
-        }
-
-        var now = DateTime.UtcNow;
-        var doc = new Document
-        {
-            Id = Guid.NewGuid(),
-            ProjectId = projectId,
-            ParentId = request.ParentId,
-            Title = request.Title.Trim(),
-            Type = request.Type,
-            Content = request.Type == DocumentType.Document ? request.Content : null,
-            CreatedBy = userId,
-            CreatedAt = now,
-            UpdatedBy = userId,
-            UpdatedAt = now,
-        };
-
-        uow.Documents.Add(doc);
-        await uow.SaveChangesAsync(ct);
-        return mapper.Map<DocumentDto>(doc);
-    }
-
-    public async Task<DocumentDto> UpdateAsync(Guid userId, Guid documentId, UpdateDocumentRequest request, CancellationToken ct = default)
-    {
-        var doc = await GetDocumentForUserAsync(userId, documentId, ct);
-        await EnsureDocumentPermissionAsync(userId, doc.ProjectId, PermissionAction.Edit, ct);
-
-        if (string.IsNullOrWhiteSpace(request.Title))
-        {
-            throw new BadRequestException("Title is required");
-        }
-
-        doc.Title = request.Title.Trim();
-        if (doc.Type == DocumentType.Document)
-        {
-            doc.Content = request.Content;
-            doc.UpdatedAt = DateTime.UtcNow;
-            doc.UpdatedBy = userId;
-        }
-        else
-        {
-            doc.UpdatedAt = DateTime.UtcNow;
-            doc.UpdatedBy = userId;
-        }
-
-        await uow.SaveChangesAsync(ct);
-        return mapper.Map<DocumentDto>(doc);
-    }
-
-    public async Task MoveAsync(Guid userId, Guid documentId, Guid? newParentId, CancellationToken ct = default)
-    {
-        var doc = await GetDocumentForUserAsync(userId, documentId, ct);
-        await EnsureDocumentPermissionAsync(userId, doc.ProjectId, PermissionAction.Edit, ct);
-
-        if (newParentId == documentId)
-        {
-            throw new BadRequestException("A document cannot be moved into itself");
-        }
-
-        if (newParentId is { } parentId)
-        {
-            var parent = await uow.Documents.GetByIdAsync(parentId, ct)
-                ?? throw new NotFoundException("Parent folder not found");
-            if (parent.ProjectId != doc.ProjectId)
-            {
-                throw new BadRequestException("Parent must belong to the same project");
-            }
-            if (parent.Type != DocumentType.Folder)
-            {
-                throw new BadRequestException("Parent must be a folder");
-            }
-
-            var cursor = parent.ParentId;
-            while (cursor is not null)
-            {
-                if (cursor == documentId)
-                {
-                    throw new BadRequestException("A folder cannot be moved into its own descendant");
-                }
-                cursor = await uow.Documents.GetParentIdAsync(cursor.Value, ct);
-            }
-        }
-
-        doc.ParentId = newParentId;
-        doc.UpdatedAt = DateTime.UtcNow;
-        doc.UpdatedBy = userId;
-        await uow.SaveChangesAsync(ct);
-    }
-
-    public async Task DeleteAsync(Guid userId, Guid documentId, CancellationToken ct = default)
-    {
-        var doc = await GetDocumentForUserAsync(userId, documentId, ct);
-        await EnsureDocumentPermissionAsync(userId, doc.ProjectId, PermissionAction.Delete, ct);
-
-        await DeleteDescendantsAsync(documentId, ct);
-        uow.Documents.Remove(doc);
-        await uow.SaveChangesAsync(ct);
-    }
-
-    public async Task<List<DocumentNodeDto>> SearchAsync(Guid userId, string term, CancellationToken ct = default)
-    {
-        var projectIds = await uow.Projects.GetDocumentViewableProjectIdsAsync(userId, ct);
-        var results = await uow.Documents.SearchAsync(projectIds, term, 20, ct);
-        return mapper.Map<List<DocumentNodeDto>>(results);
-    }
-
-    private async Task DeleteDescendantsAsync(Guid parentId, CancellationToken ct)
-    {
-        var children = await uow.Documents.GetChildrenAsync(parentId, ct);
-        foreach (var child in children)
-        {
-            await DeleteDescendantsAsync(child.Id, ct);
-            uow.Documents.Remove(child);
-        }
-    }
-
-    private async Task EnsureDocumentPermissionAsync(
-        Guid userId, Guid projectId, PermissionAction action, CancellationToken ct = default)
-    {
-        var member = await uow.Projects.GetMemberAsync(projectId, userId, ct)
-            ?? throw new NotFoundException("Project not found");
-
-        if (!await HasDocumentPermissionAsync(member, action, ct))
-        {
-            throw new ForbiddenException("You do not have permission to access documents in this project");
-        }
-    }
-
-    private async Task<bool> HasDocumentPermissionAsync(ProjectMember member, PermissionAction action, CancellationToken ct)
-    {
-        if (member.Role == MemberRole.Owner)
-        {
-            return true;
-        }
-
-        var permission = await uow.Projects.GetMemberPermissionAsync(member.ProjectId, member.UserId, ProjectPermissionScreens.Documents, ct);
-
-        return action switch
-        {
-            PermissionAction.View => permission?.CanView ?? false,
-            PermissionAction.Create => permission?.CanCreate ?? false,
-            PermissionAction.Edit => permission?.CanEdit ?? false,
-            PermissionAction.Delete => permission?.CanDelete ?? false,
-            _ => false,
-        };
-    }
-
-    private async Task<Document> GetDocumentForUserAsync(Guid userId, Guid documentId, CancellationToken ct = default)
-    {
-        var doc = await uow.Documents.GetByIdAsync(documentId, ct)
-            ?? throw new NotFoundException("Document not found");
-
-        var member = await uow.Projects.GetMemberAsync(doc.ProjectId, userId, ct);
-
-        if (member is null)
-        {
-            throw new NotFoundException("Document not found");
-        }
-
-        if (!await HasDocumentPermissionAsync(member, PermissionAction.View, ct))
-        {
-            throw new ForbiddenException("You do not have permission to view this document");
-        }
-
-        return doc;
-    }
-}

mws.application/Documents/IDocumentService.cs

@@ -1,14 +0,0 @@
-using Mws.Application.Common;
-
-namespace Mws.Application.Documents;
-
-public interface IDocumentService
-{
-    Task<List<DocumentNodeDto>> GetTreeAsync(Guid userId, Guid projectId, CancellationToken ct = default);
-    Task<DocumentDto> GetAsync(Guid userId, Guid documentId, CancellationToken ct = default);
-    Task<DocumentDto> CreateAsync(Guid userId, Guid projectId, CreateDocumentRequest request, CancellationToken ct = default);
-    Task<DocumentDto> UpdateAsync(Guid userId, Guid documentId, UpdateDocumentRequest request, CancellationToken ct = default);
-    Task MoveAsync(Guid userId, Guid documentId, Guid? newParentId, CancellationToken ct = default);
-    Task DeleteAsync(Guid userId, Guid documentId, CancellationToken ct = default);
-    Task<List<DocumentNodeDto>> SearchAsync(Guid userId, string term, CancellationToken ct = default);
-}

mws.application/Documents/Queries/GetDocument.cs

@@ -0,0 +1,16 @@
+using AutoMapper;
+using MediatR;
+using Mws.Application.Common;
+
+namespace Mws.Application.Documents;
+
+public record GetDocumentQuery(Guid UserId, Guid DocumentId) : IRequest<DocumentDto>;
+
+public class GetDocumentHandler(IUnitOfWork uow, IMapper mapper) : IRequestHandler<GetDocumentQuery, DocumentDto>
+{
+    public async Task<DocumentDto> Handle(GetDocumentQuery query, CancellationToken ct)
+    {
+        var doc = await DocumentAccess.GetDocumentForUserAsync(uow, query.UserId, query.DocumentId, ct);
+        return mapper.Map<DocumentDto>(doc);
+    }
+}

mws.application/Documents/Queries/GetDocumentTree.cs

@@ -0,0 +1,35 @@
+using AutoMapper;
+using MediatR;
+using Mws.Application.Common;
+using Mws.Application.Permissions;
+
+namespace Mws.Application.Documents;
+
+public record GetDocumentTreeQuery(Guid UserId, Guid ProjectId) : IRequest<List<DocumentNodeDto>>;
+
+public class GetDocumentTreeHandler(IUnitOfWork uow, IMapper mapper) : IRequestHandler<GetDocumentTreeQuery, List<DocumentNodeDto>>
+{
+    public async Task<List<DocumentNodeDto>> Handle(GetDocumentTreeQuery query, CancellationToken ct)
+    {
+        await DocumentAccess.EnsureDocumentPermissionAsync(uow, query.UserId, query.ProjectId, PermissionAction.View, ct);
+
+        var docs = await uow.Documents.GetTreeForProjectAsync(query.ProjectId, ct);
+
+        var nodes = docs.ToDictionary(d => d.Id, d => mapper.Map<DocumentNodeDto>(d));
+
+        var roots = new List<DocumentNodeDto>();
+        foreach (var node in nodes.Values)
+        {
+            if (node.ParentId is { } parentId && nodes.TryGetValue(parentId, out var parent))
+            {
+                parent.Children.Add(node);
+            }
+            else
+            {
+                roots.Add(node);
+            }
+        }
+
+        return roots;
+    }
+}

mws.application/Documents/Queries/SearchDocuments.cs

@@ -0,0 +1,17 @@
+using AutoMapper;
+using MediatR;
+using Mws.Application.Common;
+
+namespace Mws.Application.Documents;
+
+public record SearchDocumentsQuery(Guid UserId, string Term) : IRequest<List<DocumentNodeDto>>;
+
+public class SearchDocumentsHandler(IUnitOfWork uow, IMapper mapper) : IRequestHandler<SearchDocumentsQuery, List<DocumentNodeDto>>
+{
+    public async Task<List<DocumentNodeDto>> Handle(SearchDocumentsQuery query, CancellationToken ct)
+    {
+        var projectIds = await uow.Projects.GetDocumentViewableProjectIdsAsync(query.UserId, ct);
+        var results = await uow.Documents.SearchAsync(projectIds, query.Term, 20, ct);
+        return mapper.Map<List<DocumentNodeDto>>(results);
+    }
+}

mws.infrastructure/DependencyInjection.cs

@@ -3,7 +3,6 @@ using Microsoft.Extensions.Configuration;
 using Microsoft.Extensions.DependencyInjection;
 using Mws.Application.Auth;
 using Mws.Application.Common;
-using Mws.Application.Documents;
 using Mws.Application.Permissions;
 using Mws.Application.Projects;
 using Mws.Application.Tasks;
@@ -39,7 +38,6 @@ public static class DependencyInjection
         services.AddScoped<ITokenService, JwtTokenService>();
 
         services.AddScoped<IPermissionService, PermissionService>();
-        services.AddScoped<IDocumentService, DocumentService>();
         services.AddScoped<ITaskService, TaskService>();
 
         return services;