Project Init

colaflow-api/src/Modules/ProjectManagement/ColaFlow.Modules.ProjectManagement.Application/Queries/GetEpicById/GetEpicByIdQueryHandler.cs

@@ -0,0 +1,62 @@
+using MediatR;
+using ColaFlow.Modules.ProjectManagement.Application.DTOs;
+using ColaFlow.Modules.ProjectManagement.Domain.Repositories;
+using ColaFlow.Modules.ProjectManagement.Domain.ValueObjects;
+using ColaFlow.Modules.ProjectManagement.Domain.Exceptions;
+
+namespace ColaFlow.Modules.ProjectManagement.Application.Queries.GetEpicById;
+
+/// <summary>
+/// Handler for GetEpicByIdQuery
+/// </summary>
+public sealed class GetEpicByIdQueryHandler : IRequestHandler<GetEpicByIdQuery, EpicDto>
+{
+    private readonly IProjectRepository _projectRepository;
+
+    public GetEpicByIdQueryHandler(IProjectRepository projectRepository)
+    {
+        _projectRepository = projectRepository ?? throw new ArgumentNullException(nameof(projectRepository));
+    }
+
+    public async Task<EpicDto> Handle(GetEpicByIdQuery request, CancellationToken cancellationToken)
+    {
+        var epicId = EpicId.From(request.EpicId);
+        var project = await _projectRepository.GetProjectWithEpicAsync(epicId, cancellationToken);
+
+        if (project == null)
+            throw new NotFoundException("Epic", request.EpicId);
+
+        var epic = project.Epics.FirstOrDefault(e => e.Id == epicId);
+        if (epic == null)
+            throw new NotFoundException("Epic", request.EpicId);
+
+        return new EpicDto
+        {
+            Id = epic.Id.Value,
+            Name = epic.Name,
+            Description = epic.Description,
+            ProjectId = epic.ProjectId.Value,
+            Status = epic.Status.Value,
+            Priority = epic.Priority.Value,
+            CreatedBy = epic.CreatedBy.Value,
+            CreatedAt = epic.CreatedAt,
+            UpdatedAt = epic.UpdatedAt,
+            Stories = epic.Stories.Select(s => new StoryDto
+            {
+                Id = s.Id.Value,
+                Title = s.Title,
+                Description = s.Description,
+                EpicId = s.EpicId.Value,
+                Status = s.Status.Value,
+                Priority = s.Priority.Value,
+                EstimatedHours = s.EstimatedHours,
+                ActualHours = s.ActualHours,
+                AssigneeId = s.AssigneeId?.Value,
+                CreatedBy = s.CreatedBy.Value,
+                CreatedAt = s.CreatedAt,
+                UpdatedAt = s.UpdatedAt,
+                Tasks = new List<TaskDto>()
+            }).ToList()
+        };
+    }
+}

colaflow-api/src/Modules/ProjectManagement/ColaFlow.Modules.ProjectManagement.Application/Queries/GetEpicsByProjectId/GetEpicsByProjectIdQuery.cs

@@ -0,0 +1,9 @@
+using MediatR;
+using ColaFlow.Modules.ProjectManagement.Application.DTOs;
+
+namespace ColaFlow.Modules.ProjectManagement.Application.Queries.GetEpicsByProjectId;
+
+/// <summary>
+/// Query to get all Epics for a Project
+/// </summary>
+public sealed record GetEpicsByProjectIdQuery(Guid ProjectId) : IRequest<List<EpicDto>>;

colaflow-api/src/Modules/ProjectManagement/ColaFlow.Modules.ProjectManagement.Application/Queries/GetEpicsByProjectId/GetEpicsByProjectIdQueryHandler.cs

@@ -0,0 +1,43 @@
+using MediatR;
+using ColaFlow.Modules.ProjectManagement.Application.DTOs;
+using ColaFlow.Modules.ProjectManagement.Domain.Repositories;
+using ColaFlow.Modules.ProjectManagement.Domain.ValueObjects;
+using ColaFlow.Modules.ProjectManagement.Domain.Exceptions;
+
+namespace ColaFlow.Modules.ProjectManagement.Application.Queries.GetEpicsByProjectId;
+
+/// <summary>
+/// Handler for GetEpicsByProjectIdQuery
+/// </summary>
+public sealed class GetEpicsByProjectIdQueryHandler : IRequestHandler<GetEpicsByProjectIdQuery, List<EpicDto>>
+{
+    private readonly IProjectRepository _projectRepository;
+
+    public GetEpicsByProjectIdQueryHandler(IProjectRepository projectRepository)
+    {
+        _projectRepository = projectRepository ?? throw new ArgumentNullException(nameof(projectRepository));
+    }
+
+    public async Task<List<EpicDto>> Handle(GetEpicsByProjectIdQuery request, CancellationToken cancellationToken)
+    {
+        var projectId = ProjectId.From(request.ProjectId);
+        var project = await _projectRepository.GetByIdAsync(projectId, cancellationToken);
+
+        if (project == null)
+            throw new NotFoundException("Project", request.ProjectId);
+
+        return project.Epics.Select(epic => new EpicDto
+        {
+            Id = epic.Id.Value,
+            Name = epic.Name,
+            Description = epic.Description,
+            ProjectId = epic.ProjectId.Value,
+            Status = epic.Status.Value,
+            Priority = epic.Priority.Value,
+            CreatedBy = epic.CreatedBy.Value,
+            CreatedAt = epic.CreatedAt,
+            UpdatedAt = epic.UpdatedAt,
+            Stories = new List<StoryDto>() // Don't include stories in list view
+        }).ToList();
+    }
+}

colaflow-api/src/Modules/ProjectManagement/ColaFlow.Modules.ProjectManagement.Infrastructure/Repositories/ProjectRepository.cs

@@ -38,6 +38,35 @@ public class ProjectRepository : IProjectRepository
             .ToListAsync(cancellationToken);
     }
 
+    public async Task<Project?> GetProjectWithEpicAsync(EpicId epicId, CancellationToken cancellationToken = default)
+    {
+        return await _context.Projects
+            .Include(p => p.Epics)
+                .ThenInclude(e => e.Stories)
+            .Where(p => p.Epics.Any(e => e.Id == epicId))
+            .FirstOrDefaultAsync(cancellationToken);
+    }
+
+    public async Task<Project?> GetProjectWithStoryAsync(StoryId storyId, CancellationToken cancellationToken = default)
+    {
+        return await _context.Projects
+            .Include(p => p.Epics)
+                .ThenInclude(e => e.Stories)
+                    .ThenInclude(s => s.Tasks)
+            .Where(p => p.Epics.Any(e => e.Stories.Any(s => s.Id == storyId)))
+            .FirstOrDefaultAsync(cancellationToken);
+    }
+
+    public async Task<Project?> GetProjectWithTaskAsync(TaskId taskId, CancellationToken cancellationToken = default)
+    {
+        return await _context.Projects
+            .Include(p => p.Epics)
+                .ThenInclude(e => e.Stories)
+                    .ThenInclude(s => s.Tasks)
+            .Where(p => p.Epics.Any(e => e.Stories.Any(s => s.Tasks.Any(t => t.Id == taskId))))
+            .FirstOrDefaultAsync(cancellationToken);
+    }
+
     public async Task AddAsync(Project project, CancellationToken cancellationToken = default)
     {
         await _context.Projects.AddAsync(project, cancellationToken);