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using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using TaskTrackingSystem.Database.AppDbContextModels;
using TaskTrackingSystem.Shared;
using TaskTrackingSystem.Shared.Enums;
using TaskTrackingSystem.Shared.Models.Project;
using TaskTrackingSystem.Shared.Models.Task;
using TaskTrackingSystem.Shared.Models.User;
using TaskTrackingSystem.WebApi.Infrastructure;
namespace TaskTrackingSystem.WebApi.Features.Project
{
public class ProjectService
{
private readonly AppDbContext _db;
private readonly TaskTrackingSystem.WebApi.Features.Notification.FirebaseNotificationService _notificationService;
public ProjectService(AppDbContext db, TaskTrackingSystem.WebApi.Features.Notification.FirebaseNotificationService notificationService)
{
_db = db;
_notificationService = notificationService;
}
private static DateTime? GetCompletedAt(TaskTrackingSystem.Database.AppDbContextModels.Task task)
{
return task.StatusId == AppTaskStatus.Done
? task.UpdatedAt ?? task.CreatedAt
: null;
}
public async Task<IEnumerable<ProjectDto>> GetAllProjectsAsync(long roleId, long currentUserId)
{
var isAdmin = await DataScopeAuthorization.IsAdminScopeAsync(_db, roleId);
return await BuildAccessibleProjectQuery(isAdmin, currentUserId)
.OrderBy(p => p.EndDate)
.ThenByDescending(p => p.CreatedAt ?? DateTime.UtcNow)
.Select(p => new ProjectDto
{
Id = p.Id,
Name = p.Name,
Description = p.Description,
StartDate = p.StartDate,
EndDate = p.EndDate,
CreatedById = p.CreatedById,
CreatedAt = p.CreatedAt ?? DateTime.UtcNow,
BudgetedHours = p.BudgetedHours
}).ToListAsync();
}
public async Task<PagedResult<ProjectDto>> GetPagedProjectsAsync(long roleId, long currentUserId, string? search, int page, int pageSize)
{
var isAdmin = await DataScopeAuthorization.IsAdminScopeAsync(_db, roleId);
var query = BuildAccessibleProjectQuery(isAdmin, currentUserId);
if (!string.IsNullOrWhiteSpace(search))
{
var searchTerm = search.Trim().ToLower();
query = query.Where(p =>
(p.Name != null && p.Name.ToLower().Contains(searchTerm)) ||
(p.Description != null && p.Description.ToLower().Contains(searchTerm)));
}
return await query
.OrderBy(p => p.EndDate)
.ThenByDescending(p => p.CreatedAt ?? DateTime.UtcNow)
.Select(p => new ProjectDto
{
Id = p.Id,
Name = p.Name,
Description = p.Description,
StartDate = p.StartDate,
EndDate = p.EndDate,
CreatedById = p.CreatedById,
CreatedAt = p.CreatedAt ?? DateTime.UtcNow,
BudgetedHours = p.BudgetedHours
})
.ToPagedResultAsync(page, pageSize);
}
public async Task<ProjectDto?> GetProjectByIdAsync(long id, long roleId, long currentUserId)
{
var isAdmin = await DataScopeAuthorization.IsAdminScopeAsync(_db, roleId);
var project = await BuildAccessibleProjectQuery(isAdmin, currentUserId)
.FirstOrDefaultAsync(p => p.Id == id);
if (project == null)
{
return null;
}
return new ProjectDto
{
Id = project.Id,
Name = project.Name,
Description = project.Description,
StartDate = project.StartDate,
EndDate = project.EndDate,
CreatedById = project.CreatedById,
CreatedAt = project.CreatedAt ?? DateTime.UtcNow,
BudgetedHours = project.BudgetedHours
};
}
public async Task<Result<ProjectDto>> CreateProjectAsync(CreateProjectDto dto, long? currentUserId = null)
{
if (string.IsNullOrWhiteSpace(dto.Name))
{
return Result<ProjectDto>.Failure(ResultMessages.ProjectNameRequired, 400);
}
var project = new TaskTrackingSystem.Database.AppDbContextModels.Project
{
Name = dto.Name,
Description = dto.Description,
StartDate = dto.StartDate,
EndDate = dto.EndDate,
CreatedById = dto.CreatedById,
IsDeleted = false,
CreatedAt = DateTime.UtcNow,
CreatedBy = currentUserId,
BudgetedHours = dto.BudgetedHours
};
_db.Projects.Add(project);
await _db.SaveChangesAsync();
var resultDto = new ProjectDto
{
Id = project.Id,
Name = project.Name,
Description = project.Description,
StartDate = project.StartDate,
EndDate = project.EndDate,
CreatedById = project.CreatedById,
CreatedAt = project.CreatedAt ?? DateTime.UtcNow,
BudgetedHours = project.BudgetedHours
};
return Result<ProjectDto>.Success(resultDto, 201);
}
public async Task<Result> UpdateProjectAsync(long id, UpdateProjectDto dto, long roleId, long currentUserId)
{
if (string.IsNullOrWhiteSpace(dto.Name))
{
return Result.Failure(ResultMessages.ProjectNameRequired, 400);
}
var project = await _db.Projects.FirstOrDefaultAsync(p => p.Id == id && p.IsDeleted != true);
if (project == null)
{
return Result.Failure(ResultMessages.ProjectNotFound(id), 404);
}
var isAdmin = await DataScopeAuthorization.IsAdminScopeAsync(_db, roleId);
if (!await IsProjectAccessibleAsync(id, isAdmin, currentUserId))
{
return Result.Failure("You do not have access to this project.", 403);
}
project.Name = dto.Name;
project.Description = dto.Description;
project.StartDate = dto.StartDate;
project.EndDate = dto.EndDate;
project.BudgetedHours = dto.BudgetedHours;
project.UpdatedAt = DateTime.UtcNow;
project.UpdatedBy = currentUserId;
_db.Projects.Update(project);
await _db.SaveChangesAsync();
return Result.Success(200);
}
public async Task<Result> SoftDeleteProjectAsync(long id, long roleId, long currentUserId)
{
var project = await _db.Projects.FirstOrDefaultAsync(p => p.Id == id && p.IsDeleted != true);
if (project == null)
{
return Result.Failure(ResultMessages.ProjectNotFound(id), 404);
}
var isAdmin = await DataScopeAuthorization.IsAdminScopeAsync(_db, roleId);
if (!await IsProjectAccessibleAsync(id, isAdmin, currentUserId))
{
return Result.Failure("You do not have access to this project.", 403);
}
project.IsDeleted = true;
_db.Projects.Update(project);
var tasksToUpdate = await _db.Tasks
.Where(t => t.ProjectId == id && t.IsDeleted != true)
.ToListAsync();
foreach (var task in tasksToUpdate)
{
task.IsDeleted = true;
task.UpdatedAt = DateTime.UtcNow;
task.UpdatedBy = currentUserId;
}
if (tasksToUpdate.Any())
{
_db.Tasks.UpdateRange(tasksToUpdate);
}
await _db.SaveChangesAsync();
return Result.Success(200);
}
public async Task<Result<IEnumerable<UserDto>>> GetProjectMembersAsync(long projectId, long roleId, long currentUserId)
{
var isAdmin = await DataScopeAuthorization.IsAdminScopeAsync(_db, roleId);
if (!await IsProjectAccessibleAsync(projectId, isAdmin, currentUserId))
{
return Result<IEnumerable<UserDto>>.Failure("You do not have access to this project.", 403);
}
var members = await _db.ProjectMembers
.Where(pm => pm.ProjectId == projectId)
.Join(_db.Users.Where(u => !u.IsDeleted),
pm => pm.UserId,
u => u.Id,
(pm, u) => new UserDto
{
Id = u.Id,
Username = u.Username,
FirstName = u.FirstName,
LastName = u.LastName,
Email = u.Email,
Phone = u.Phone,
RoleId = u.RoleId,
IsActive = u.IsActive,
CreatedAt = u.CreatedAt ?? DateTime.UtcNow
})
.ToListAsync();
return Result<IEnumerable<UserDto>>.Success(members);
}
public async Task<Result> AssignMembersToProjectAsync(long projectId, AssignMembersDto dto, long roleId, long currentUserId)
{
var projectExists = await _db.Projects.AnyAsync(p => p.Id == projectId && p.IsDeleted != true);
if (!projectExists)
{
return Result.Failure(ResultMessages.ProjectNotFound(projectId), 404);
}
var isAdmin = await DataScopeAuthorization.IsAdminScopeAsync(_db, roleId);
if (!await IsProjectAccessibleAsync(projectId, isAdmin, currentUserId))
{
return Result.Failure("You do not have access to this project.", 403);
}
if (dto.UserIds == null)
{
return Result.Failure(ResultMessages.UserIdsCannotBeNull, 400);
}
if (dto.UserIds.Any())
{
var validUserIds = await _db.Users
.Where(u => dto.UserIds.Contains(u.Id) && !u.IsDeleted)
.Select(u => u.Id)
.ToListAsync();
var invalidUserIds = dto.UserIds.Except(validUserIds).ToList();
if (invalidUserIds.Any())
{
return Result.Failure(ResultMessages.InvalidUserIds(string.Join(", ", invalidUserIds)), 400);
}
}
var existingMembers = await _db.ProjectMembers
.Where(pm => pm.ProjectId == projectId)
.ToListAsync();
var previousMemberIds = existingMembers.Select(pm => pm.UserId).ToHashSet();
if (existingMembers.Any())
{
_db.ProjectMembers.RemoveRange(existingMembers);
}
foreach (var userId in dto.UserIds)
{
_db.ProjectMembers.Add(new ProjectMember
{
ProjectId = projectId,
UserId = userId,
CreatedAt = DateTime.UtcNow
});
}
await _db.SaveChangesAsync();
var addedMemberIds = dto.UserIds.Except(previousMemberIds).ToList();
if (addedMemberIds.Count > 0)
{
var project = await _db.Projects.FirstOrDefaultAsync(p => p.Id == projectId && p.IsDeleted != true);
if (project != null)
{
await _notificationService.NotifyProjectAssignedAsync(project, addedMemberIds, currentUserId);
}
}
return Result.Success(200);
}
public async Task<Result> RemoveMemberFromProjectAsync(long projectId, long userId, long roleId, long currentUserId)
{
var projectExists = await _db.Projects.AnyAsync(p => p.Id == projectId && p.IsDeleted != true);
if (!projectExists)
{
return Result.Failure(ResultMessages.ProjectNotFound(projectId), 404);
}
var isAdmin = await DataScopeAuthorization.IsAdminScopeAsync(_db, roleId);
if (!await IsProjectAccessibleAsync(projectId, isAdmin, currentUserId))
{
return Result.Failure("You do not have access to this project.", 403);
}
var member = await _db.ProjectMembers
.FirstOrDefaultAsync(pm => pm.ProjectId == projectId && pm.UserId == userId);
if (member == null)
{
return Result.Failure(ResultMessages.UserNotProjectMember(userId, projectId), 404);
}
_db.ProjectMembers.Remove(member);
await _db.SaveChangesAsync();
return Result.Success(204);
}
public async Task<Result<IEnumerable<TaskDto>>> GetProjectTasksAsync(long projectId, long roleId, long currentUserId)
{
var isAdmin = await DataScopeAuthorization.IsAdminScopeAsync(_db, roleId);
if (!await IsProjectAccessibleAsync(projectId, isAdmin, currentUserId))
{
return Result<IEnumerable<TaskDto>>.Failure("You do not have access to this project.", 403);
}
var tasks = await _db.Tasks
.Where(t => t.ProjectId == projectId && t.IsDeleted != true && !t.IsArchived)
.Select(t => new TaskDto
{
Id = t.Id,
Title = t.Title,
Description = t.Description,
ProjectId = t.ProjectId,
StatusId = t.StatusId,
PriorityId = t.PriorityId,
AssignedTo = t.AssignedTo,
AssignedBy = t.AssignedBy,
DueDate = t.DueDate,
CreatedAt = t.CreatedAt ?? DateTime.UtcNow,
IsArchived = t.IsArchived,
CompletedAt = GetCompletedAt(t)
})
.ToListAsync();
return Result<IEnumerable<TaskDto>>.Success(tasks);
}
private IQueryable<TaskTrackingSystem.Database.AppDbContextModels.Project> BuildAccessibleProjectQuery(bool isAdmin, long currentUserId)
{
var query = _db.Projects.Where(p => p.IsDeleted != true);
if (isAdmin)
{
return query;
}
return query.Where(p =>
p.CreatedById == currentUserId ||
p.ProjectMembers.Any(pm => pm.UserId == currentUserId));
}
private async Task<bool> IsProjectAccessibleAsync(long projectId, bool isAdmin, long currentUserId)
{
if (isAdmin)
{
return await _db.Projects.AnyAsync(p => p.Id == projectId && p.IsDeleted != true);
}
return await _db.Projects.AnyAsync(p =>
p.Id == projectId &&
p.IsDeleted != true &&
(p.CreatedById == currentUserId || p.ProjectMembers.Any(pm => pm.UserId == currentUserId)));
}
}
}
|