[PM-22580] Org/User License Codeownership Move (No logic changes) (#6080)

* Moved license models to billing

* Moved LicensingService to billing

* Moved license command and queries to billing

* Moved LicenseController to billing

src/Api/Billing/Controllers/LicensesController.cs

@@ -0,0 +1,90 @@
+// FIXME: Update this file to be null safe and then delete the line below
+#nullable disable
+
+using Bit.Core.AdminConsole.OrganizationFeatures.OrganizationConnections.Interfaces;
+using Bit.Core.Billing.Models.Business;
+using Bit.Core.Billing.OrganizationFeatures.OrganizationLicenses.Interfaces;
+using Bit.Core.Context;
+using Bit.Core.Exceptions;
+using Bit.Core.Models.Api.OrganizationLicenses;
+using Bit.Core.Repositories;
+using Bit.Core.Services;
+using Bit.Core.Utilities;
+using Microsoft.AspNetCore.Authorization;
+using Microsoft.AspNetCore.Mvc;
+
+namespace Bit.Api.Billing.Controllers;
+
+[Route("licenses")]
+[Authorize("Licensing")]
+[SelfHosted(NotSelfHostedOnly = true)]
+public class LicensesController : Controller
+{
+    private readonly IUserRepository _userRepository;
+    private readonly IUserService _userService;
+    private readonly IOrganizationRepository _organizationRepository;
+    private readonly ICloudGetOrganizationLicenseQuery _cloudGetOrganizationLicenseQuery;
+    private readonly IValidateBillingSyncKeyCommand _validateBillingSyncKeyCommand;
+    private readonly ICurrentContext _currentContext;
+
+    public LicensesController(
+        IUserRepository userRepository,
+        IUserService userService,
+        IOrganizationRepository organizationRepository,
+        ICloudGetOrganizationLicenseQuery cloudGetOrganizationLicenseQuery,
+        IValidateBillingSyncKeyCommand validateBillingSyncKeyCommand,
+        ICurrentContext currentContext)
+    {
+        _userRepository = userRepository;
+        _userService = userService;
+        _organizationRepository = organizationRepository;
+        _cloudGetOrganizationLicenseQuery = cloudGetOrganizationLicenseQuery;
+        _validateBillingSyncKeyCommand = validateBillingSyncKeyCommand;
+        _currentContext = currentContext;
+    }
+
+    [HttpGet("user/{id}")]
+    public async Task<UserLicense> GetUser(string id, [FromQuery] string key)
+    {
+        var user = await _userRepository.GetByIdAsync(new Guid(id));
+        if (user == null)
+        {
+            return null;
+        }
+        else if (!user.LicenseKey.Equals(key))
+        {
+            await Task.Delay(2000);
+            throw new BadRequestException("Invalid license key.");
+        }
+
+        var license = await _userService.GenerateLicenseAsync(user, null);
+        return license;
+    }
+
+    /// <summary>
+    /// Used by self-hosted installations to get an updated license file
+    /// </summary>
+    [HttpGet("organization/{id}")]
+    public async Task<OrganizationLicense> OrganizationSync(string id, [FromBody] SelfHostedOrganizationLicenseRequestModel model)
+    {
+        var organization = await _organizationRepository.GetByIdAsync(new Guid(id));
+        if (organization == null)
+        {
+            throw new NotFoundException("Organization not found.");
+        }
+
+        if (!organization.LicenseKey.Equals(model.LicenseKey))
+        {
+            await Task.Delay(2000);
+            throw new BadRequestException("Invalid license key.");
+        }
+
+        if (!await _validateBillingSyncKeyCommand.ValidateBillingSyncKeyAsync(organization, model.BillingSyncKey))
+        {
+            throw new BadRequestException("Invalid Billing Sync Key");
+        }
+
+        var license = await _cloudGetOrganizationLicenseQuery.GetLicenseAsync(organization, _currentContext.InstallationId.Value);
+        return license;
+    }
+}