| 1 | using IntercomService.Contracts; |
| 2 | using IntercomService.Data; |
| 3 | using Microsoft.EntityFrameworkCore; |
| 4 | |
| 5 | namespace IntercomService.Services; |
| 6 | |
| 7 | public sealed class AgentAccountService(IntercomDbContext db) |
| 8 | { |
| 9 | public async Task<AgentDto?> ProvisionAsync( |
| 10 | string teamId, |
| 11 | string displayName, |
| 12 | string? avatarGlyph, |
| 13 | CancellationToken ct) |
| 14 | { |
| 15 | var memberId = $"agent-{Guid.NewGuid():N}"; |
| 16 | var member = new MemberEntity |
| 17 | { |
| 18 | MemberId = memberId, |
| 19 | Issuer = "agent", |
| 20 | Subject = memberId, |
| 21 | DisplayName = displayName.Trim(), |
| 22 | MemberKind = MemberKinds.Agent, |
| 23 | AvatarGlyph = avatarGlyph, |
| 24 | CreatedAtUtc = DateTimeOffset.UtcNow, |
| 25 | }; |
| 26 | |
| 27 | db.Members.Add(member); |
| 28 | db.TeamMembers.Add(new TeamMemberEntity |
| 29 | { |
| 30 | TeamId = teamId, |
| 31 | MemberId = memberId, |
| 32 | TeamRole = TeamRoles.Agent, |
| 33 | JoinedAtUtc = DateTimeOffset.UtcNow, |
| 34 | }); |
| 35 | |
| 36 | var plain = Convert.ToBase64String(System.Security.Cryptography.RandomNumberGenerator.GetBytes(48)); |
| 37 | db.AgentCredentials.Add(new AgentCredentialEntity |
| 38 | { |
| 39 | CredentialId = Guid.NewGuid().ToString("N"), |
| 40 | MemberId = memberId, |
| 41 | TokenHash = JwtTokenService.HashToken(plain), |
| 42 | CreatedAtUtc = DateTimeOffset.UtcNow, |
| 43 | }); |
| 44 | |
| 45 | await db.SaveChangesAsync(ct).ConfigureAwait(false); |
| 46 | return new AgentDto(memberId, member.DisplayName, avatarGlyph, plain); |
| 47 | } |
| 48 | |
| 49 | public async Task<bool> PatchAsync( |
| 50 | string teamId, |
| 51 | string memberId, |
| 52 | PatchAgentRequest body, |
| 53 | bool isAdmin, |
| 54 | CancellationToken ct) |
| 55 | { |
| 56 | var membership = await db.TeamMembers |
| 57 | .Include(x => x.Member) |
| 58 | .FirstOrDefaultAsync(x => x.TeamId == teamId && x.MemberId == memberId, ct) |
| 59 | .ConfigureAwait(false); |
| 60 | |
| 61 | if (membership?.Member is null || !string.Equals(membership.Member.MemberKind, MemberKinds.Agent, StringComparison.Ordinal)) |
| 62 | return false; |
| 63 | |
| 64 | if (!isAdmin && !string.Equals(membership.MemberId, memberId, StringComparison.Ordinal)) |
| 65 | return false; |
| 66 | |
| 67 | if (!string.IsNullOrWhiteSpace(body.DisplayName)) |
| 68 | membership.Member.DisplayName = body.DisplayName.Trim(); |
| 69 | |
| 70 | if (body.AvatarGlyph is not null) |
| 71 | membership.Member.AvatarGlyph = string.IsNullOrWhiteSpace(body.AvatarGlyph) ? null : body.AvatarGlyph.Trim(); |
| 72 | |
| 73 | if (body.RevokeCredentials) |
| 74 | { |
| 75 | var creds = await db.AgentCredentials |
| 76 | .Where(x => x.MemberId == memberId && x.RevokedAtUtc == null) |
| 77 | .ToListAsync(ct) |
| 78 | .ConfigureAwait(false); |
| 79 | foreach (var c in creds) |
| 80 | c.RevokedAtUtc = DateTimeOffset.UtcNow; |
| 81 | } |
| 82 | |
| 83 | await db.SaveChangesAsync(ct).ConfigureAwait(false); |
| 84 | return true; |
| 85 | } |
| 86 | |
| 87 | public async Task<MemberEntity?> AuthenticateAgentCredentialAsync(string plainToken, CancellationToken ct) |
| 88 | { |
| 89 | var hash = JwtTokenService.HashToken(plainToken); |
| 90 | var cred = await db.AgentCredentials |
| 91 | .Include(x => x.Member) |
| 92 | .FirstOrDefaultAsync(x => x.TokenHash == hash && x.RevokedAtUtc == null, ct) |
| 93 | .ConfigureAwait(false); |
| 94 | |
| 95 | if (cred?.Member is null) |
| 96 | return null; |
| 97 | |
| 98 | if (cred.ExpiresAtUtc is not null && cred.ExpiresAtUtc < DateTimeOffset.UtcNow) |
| 99 | return null; |
| 100 | |
| 101 | return cred.Member; |
| 102 | } |
| 103 | } |
| 104 | |