3 files changed, 73 insertions, 11 deletions
diff --git a/code/api/src/Data/Database/Internal/Tenant.cs b/code/api/src/Data/Database/Internal/Tenant.cs
deleted file mode 100644
index b185c7a..0000000
--- a/code/api/src/Data/Database/Internal/Tenant.cs
+++ /dev/null
@@ -1,11 +0,0 @@
-namespace IOL.GreatOffice.Api.Data.Database;
-
-public class Tenant : BaseWithOwner
-{
-	public string Name { get; set; }
-	public string Description { get; set; }
-	public string ContactEmail { get; set; }
-	public Guid MasterUserId { get; set; }
-	public string MasterUserPassword { get; set; }
-	public ICollection<User> Users { get; set; }
-}
diff --git a/code/api/src/Models/Database/Internal/Tenant.cs b/code/api/src/Models/Database/Internal/Tenant.cs
new file mode 100644
index 0000000..471164d
--- /dev/null
+++ b/code/api/src/Models/Database/Internal/Tenant.cs
@@ -0,0 +1,12 @@
+namespace IOL.GreatOffice.Api.Data.Database;
+
+public class Tenant : BaseWithOwner
+{
+    public string Slug { get; set; }
+    public string Name { get; set; }
+    public string Description { get; set; }
+    public string ContactEmail { get; set; }
+    public Guid MasterUserId { get; set; }
+    public string MasterUserPassword { get; set; }
+    public ICollection<User> Users { get; set; }
+}
+\ No newline at end of file
diff --git a/code/api/src/Services/TenantService.cs b/code/api/src/Services/TenantService.cs
new file mode 100644
index 0000000..096465a
--- /dev/null
+++ b/code/api/src/Services/TenantService.cs
@@ -0,0 +1,61 @@
+namespace IOL.GreatOffice.Api.Services;
+
+public class TenantService
+{
+    private readonly MainAppDatabase _database;
+    private readonly ILogger<TenantService> _logger;
+
+    public TenantService(MainAppDatabase database, ILogger<TenantService> logger) {
+        _database = database;
+        _logger = logger;
+    }
+
+    public Tenant CreateTenant(string name, Guid owner, string email) {
+        var tenant = new Tenant() {
+            Name = name,
+            Slug = Slug.Generate(true, name),
+            MasterUserId = owner,
+            ContactEmail = email
+        };
+
+        var masterUserExists = _database.Users.Any(c => c.Id == tenant.MasterUserId);
+        if (!masterUserExists) {
+            _logger.LogError("Tried to create a new tenant with a non-existent master user: {0}", owner);
+            return default;
+        }
+
+        if (!email.IsValidEmailAddress()) {
+            _logger.LogError("Tried to create a new tenant with an invalid email {0}", email);
+            return default;
+        }
+        
+        _database.Tenants.Add(tenant);
+        _database.SaveChanges();
+        return tenant;
+    }
+
+    public void AddUserToTenant(Guid userId, Guid tenantId) {
+        var tenant = _database.Tenants.FirstOrDefault(c => c.Id == tenantId);
+        if (tenant == default) {
+            _logger.LogError("Tried adding user {0} to tenant {1} but the tenant was not found");
+            return;
+        }
+
+        var user = _database.Users.FirstOrDefault(c => c.Id == userId);
+        if (user == default) {
+            _logger.LogError("Tried adding user {0} to tenant {1} but the user was not found");
+            return;
+        }
+
+        if (tenant.Users.Any(c => c.Id == user.Id)) {
+            _logger.LogDebug("User {0} is already a part of tenant {1}");
+            return;
+        }
+
+        tenant.Users.Add(user);
+        tenant.SetModified();
+        _database.Tenants.Update(tenant);
+        _database.SaveChanges();
+        _logger.LogInformation("Added user {0} to tenant {1}", userId, tenantId);
+    }
+}
+\ No newline at end of file