InvitationService.cs
6,853 bytes
| 1 | using System.Security.Cryptography; |
|---|---|
| 2 | using App.BLL.DTO; |
| 3 | using App.BLL.Mappers; |
| 4 | using App.Domain; |
| 5 | using App.Domain.Contracts; |
| 6 | |
| 7 | namespace App.BLL.Services; |
| 8 | |
| 9 | public class InvitationService : IInvitationService |
| 10 | { |
| 11 | private readonly IAppUnitOfWork _uow; |
| 12 | |
| 13 | public InvitationService(IAppUnitOfWork uow) |
| 14 | { |
| 15 | _uow = uow; |
| 16 | } |
| 17 | |
| 18 | public async Task<TripInvitationBllDto> CreateInvitationAsync(Guid tripId, Guid userId) |
| 19 | { |
| 20 | var token = Convert.ToBase64String(RandomNumberGenerator.GetBytes(32)) |
| 21 | .Replace("+", "-").Replace("/", "_").TrimEnd('='); |
| 22 | |
| 23 | var invitation = new TripInvitation |
| 24 | { |
| 25 | Id = Guid.NewGuid(), |
| 26 | TripId = tripId, |
| 27 | InvitedByUserId = userId, |
| 28 | Token = token, |
| 29 | Status = EInvitationStatus.Pending, |
| 30 | ExpiresAt = DateTime.UtcNow.AddDays(7) |
| 31 | }; |
| 32 | |
| 33 | _uow.TripInvitations.Add(invitation); |
| 34 | await _uow.SaveChangesAsync(); |
| 35 | |
| 36 | return InvitationBllDtoFactory.Create(invitation); |
| 37 | } |
| 38 | |
| 39 | public async Task<bool> AcceptInvitationAsync(string token, Guid userId) |
| 40 | { |
| 41 | var invitation = await _uow.TripInvitations.GetByTokenAsync(token); |
| 42 | if (invitation == null) return false; |
| 43 | |
| 44 | if (invitation.Status != EInvitationStatus.Pending || invitation.ExpiresAt < DateTime.UtcNow) |
| 45 | return false; |
| 46 | |
| 47 | // Check if already a participant |
| 48 | var participants = (await _uow.TripParticipants.GetByTripIdAsync(invitation.TripId)).ToList(); |
| 49 | var existingParticipant = participants.FirstOrDefault(tp => tp.UserId == userId); |
| 50 | |
| 51 | var allParticipants = await _uow.TripParticipants.GetAllAsync(); |
| 52 | var inactiveParticipant = allParticipants |
| 53 | .FirstOrDefault(tp => tp.TripId == invitation.TripId && tp.UserId == userId && !tp.IsActive); |
| 54 | |
| 55 | if (existingParticipant != null) |
| 56 | { |
| 57 | // Already an active participant |
| 58 | } |
| 59 | else if (inactiveParticipant != null) |
| 60 | { |
| 61 | inactiveParticipant.IsActive = true; |
| 62 | inactiveParticipant.LeftAt = null; |
| 63 | _uow.TripParticipants.Update(inactiveParticipant); |
| 64 | } |
| 65 | else |
| 66 | { |
| 67 | var participant = new TripParticipant |
| 68 | { |
| 69 | Id = Guid.NewGuid(), |
| 70 | TripId = invitation.TripId, |
| 71 | UserId = userId, |
| 72 | Role = EParticipantRole.Participant, |
| 73 | JoinedAt = DateTime.UtcNow, |
| 74 | IsActive = true |
| 75 | }; |
| 76 | _uow.TripParticipants.Add(participant); |
| 77 | } |
| 78 | |
| 79 | invitation.Status = EInvitationStatus.Accepted; |
| 80 | invitation.RespondedAt = DateTime.UtcNow; |
| 81 | _uow.TripInvitations.Update(invitation); |
| 82 | |
| 83 | await _uow.SaveChangesAsync(); |
| 84 | |
| 85 | return true; |
| 86 | } |
| 87 | |
| 88 | public async Task<(TripInvitationBllDto? invitation, string? errorCode)> CreateInvitationGuardedAsync(Guid tripId, Guid userId) |
| 89 | { |
| 90 | if (!await _uow.TripParticipants.IsOrganizerAsync(tripId, userId)) |
| 91 | return (null, "forbidden"); |
| 92 | var invitation = await CreateInvitationAsync(tripId, userId); |
| 93 | return (invitation, null); |
| 94 | } |
| 95 | |
| 96 | public async Task<TripInvitationBllDto?> GetByIdAsync(Guid id) |
| 97 | { |
| 98 | var entity = await _uow.TripInvitations.GetByIdAsync(id); |
| 99 | return entity == null ? null : InvitationBllDtoFactory.Create(entity); |
| 100 | } |
| 101 | |
| 102 | public async Task<TripInvitationBllDto?> GetByTokenAsync(string token) |
| 103 | { |
| 104 | var entity = await _uow.TripInvitations.GetByTokenAsync(token); |
| 105 | return entity == null ? null : InvitationBllDtoFactory.Create(entity); |
| 106 | } |
| 107 | |
| 108 | public async Task<List<TripInvitationBllDto>> GetPendingByTripIdAsync(Guid tripId, Guid userId) |
| 109 | { |
| 110 | if (!await _uow.TripParticipants.IsParticipantAsync(tripId, userId)) |
| 111 | return new List<TripInvitationBllDto>(); |
| 112 | var invitations = await _uow.TripInvitations.GetPendingByTripIdAsync(tripId); |
| 113 | return InvitationBllDtoFactory.CreateList(invitations); |
| 114 | } |
| 115 | |
| 116 | public async Task<(bool success, string? errorCode)> AcceptInvitationGuardedAsync(string token, Guid userId) |
| 117 | { |
| 118 | var invitation = await _uow.TripInvitations.GetByTokenAsync(token); |
| 119 | if (invitation == null) return (false, "notfound"); |
| 120 | |
| 121 | if (invitation.Status != EInvitationStatus.Pending) |
| 122 | return (false, "not-pending"); |
| 123 | |
| 124 | if (invitation.ExpiresAt < DateTime.UtcNow) |
| 125 | { |
| 126 | invitation.Status = EInvitationStatus.Expired; |
| 127 | _uow.TripInvitations.Update(invitation); |
| 128 | await _uow.SaveChangesAsync(); |
| 129 | return (false, "expired"); |
| 130 | } |
| 131 | |
| 132 | if (await _uow.TripParticipants.IsParticipantAsync(invitation.TripId, userId)) |
| 133 | return (false, "already-participant"); |
| 134 | |
| 135 | var accepted = await AcceptInvitationAsync(token, userId); |
| 136 | if (!accepted) return (false, "failed"); |
| 137 | |
| 138 | return (true, null); |
| 139 | } |
| 140 | |
| 141 | public async Task<(bool success, string? errorCode)> RevokeInvitationAsync(Guid invitationId, Guid tripId, Guid userId) |
| 142 | { |
| 143 | if (!await _uow.TripParticipants.IsOrganizerAsync(tripId, userId)) |
| 144 | return (false, "forbidden"); |
| 145 | |
| 146 | var invitation = await _uow.TripInvitations.GetByIdAsync(invitationId); |
| 147 | if (invitation == null || invitation.TripId != tripId) return (false, "notfound"); |
| 148 | |
| 149 | if (invitation.Status == EInvitationStatus.Pending) |
| 150 | { |
| 151 | invitation.Status = EInvitationStatus.Revoked; |
| 152 | invitation.RespondedAt = DateTime.UtcNow; |
| 153 | _uow.TripInvitations.Update(invitation); |
| 154 | await _uow.SaveChangesAsync(); |
| 155 | } |
| 156 | |
| 157 | return (true, null); |
| 158 | } |
| 159 | |
| 160 | public async Task<(bool success, string? errorCode)> RevokeInvitationByTokenAsync(string token, Guid userId) |
| 161 | { |
| 162 | var invitation = await _uow.TripInvitations.GetByTokenAsync(token); |
| 163 | if (invitation == null) return (false, "notfound"); |
| 164 | |
| 165 | if (!await _uow.TripParticipants.IsOrganizerAsync(invitation.TripId, userId)) |
| 166 | return (false, "forbidden"); |
| 167 | |
| 168 | invitation.Status = EInvitationStatus.Revoked; |
| 169 | invitation.RespondedAt = DateTime.UtcNow; |
| 170 | _uow.TripInvitations.Update(invitation); |
| 171 | await _uow.SaveChangesAsync(); |
| 172 | return (true, null); |
| 173 | } |
| 174 | |
| 175 | public async Task<(bool success, string? errorCode)> DeclineInvitationAsync(string token) |
| 176 | { |
| 177 | var invitation = await _uow.TripInvitations.GetByTokenAsync(token); |
| 178 | if (invitation == null) return (false, "notfound"); |
| 179 | |
| 180 | if (invitation.Status != EInvitationStatus.Pending) |
| 181 | return (false, "not-pending"); |
| 182 | |
| 183 | invitation.Status = EInvitationStatus.Declined; |
| 184 | invitation.RespondedAt = DateTime.UtcNow; |
| 185 | _uow.TripInvitations.Update(invitation); |
| 186 | await _uow.SaveChangesAsync(); |
| 187 | return (true, null); |
| 188 | } |
| 189 | } |
| 190 | |