PowderCoatingLogix/MULTI_TENANCY_STATUS.md

Multi-Tenancy Implementation Status

Completed Tasks ✅

Phase 1: Core Infrastructure (COMPLETED)

• ✅ Created Company entity with all required fields
• ✅ Added CompanyId to BaseEntity (all entities now tenant-scoped)
• ✅ Updated ApplicationUser with CompanyId, Company navigation, and CompanyRole
• ✅ Created ITenantContext interface
• ✅ Implemented TenantContext service for tenant resolution
• ✅ Updated AppConstants with SuperAdmin role and CompanyRoles class

Phase 2: Database Layer (COMPLETED)

• ✅ Added Companies DbSet to ApplicationDbContext
• ✅ Implemented global query filters for tenant isolation (soft delete + CompanyId filtering)
• ✅ Added foreign key relationships from all entities to Companies
• ✅ Created CompanyId indexes on all tenant-scoped entities
• ✅ Updated SaveChangesAsync to auto-set CompanyId on new entities
• ✅ Created EF Core migration AddMultiTenancy

Phase 3: Authentication & Authorization (COMPLETED)

• ✅ Registered ITenantContext service in Program.cs
• ✅ Added HttpContextAccessor for tenant context resolution
• ✅ Configured authorization policies:
  • SuperAdminOnly - Platform administrators
  • CompanyAdminOnly - Company administrators
  • CanManageJobs - Job management permissions
  • CanManageUsers - User management permissions
  • CanViewData - All authenticated users

Phase 4: Data Seeding (COMPLETED)

• ✅ Updated SeedData.cs to create default company
• ✅ Seeds SuperAdmin user (superadmin@powdercoating.com / SuperAdmin123!)
• ✅ Seeds CompanyAdmin user (admin@demo.com / CompanyAdmin123!)
• ✅ Seeds Manager user (manager@demo.com / Manager123!)

Completed Tasks ✅ (Continued)

Phase 5: Company Management (COMPLETED)

• ✅ Created Company DTOs (CompanyDto, CompanyListDto, CreateCompanyDto, UpdateCompanyDto)
• ✅ Created CompaniesController for SuperAdmin with full CRUD operations
• ✅ Created Company views (Index, Create, Edit, Details)
• ✅ Created CompanyProfile for AutoMapper
• ✅ Enhanced Repository with include and ignoreQueryFilters support

Phase 6: User Management (COMPLETED)

• ✅ Created User Management DTOs
• ✅ Created CompanyUsersController for company user management
• ✅ Created CompanyUsers views (Index, Create, Edit)
• ✅ Implemented user creation with automatic company assignment
• ✅ Implemented role-based permissions per user

Phase 7: UI Updates (COMPLETED)

• ✅ Updated _Layout.cshtml with company badge display in header
• ✅ Added conditional navigation for SuperAdmin (Companies menu)
• ✅ Added conditional navigation for CompanyAdmin (Manage Users menu)
• ✅ Created AUTHORIZATION_UPDATE_GUIDE.md with instructions for existing controllers

Phase 8: Ready for Deployment

• 📋 Apply database migration (see DEPLOYMENT_GUIDE.md)
• 📋 Test multi-tenancy implementation end-to-end

Important Notes ⚠️

Migration Status

The migration file 20260205220415_AddMultiTenancy.cs has been created but NOT YET APPLIED to the database.

IMPORTANT: Before applying the migration, you need to handle existing data:

1. The migration adds CompanyId columns with defaultValue: 0
2. This will cause foreign key constraint violations
3. The SeedData.cs will create a default company and assign users to it
4. First-time setup: Run migration after ensuring no data exists, or manually update existing data

Applying the Migration

cd src/PowderCoating.Web
dotnet ef database update --project ../PowderCoating.Infrastructure

Default Credentials

After migration and seeding:

Super Admin (Platform Management)

• Email: superadmin@powdercoating.com
• Password: SuperAdmin123!
• Can: Manage all companies, view all data

Company Admin (Demo Company)

• Email: admin@demo.com
• Password: CompanyAdmin123!
• Can: Manage Demo Company users, manage Demo Company data

Manager (Demo Company)

• Email: manager@demo.com
• Password: Manager123!
• Can: Manage jobs, inventory, customers for Demo Company

Architecture Overview

Data Isolation

• Global Query Filters: All queries automatically filtered by CompanyId
• SuperAdmin Bypass: SuperAdmin can use .IgnoreQueryFilters() to access all data
• Automatic CompanyId Assignment: SaveChangesAsync auto-sets CompanyId on new entities

Tenant Resolution

1. User logs in and receives CompanyId claim
2. TenantContext reads CompanyId from HTTP context claims
3. ApplicationDbContext uses TenantContext to apply query filters
4. All queries automatically scoped to user's company

Role Hierarchy

• SuperAdmin: Platform-level (manages companies, sees all data)
• CompanyAdmin: Company-level (manages company users and data)
• Manager: Company-level (manages operations, no user management)
• Worker: Company-level (limited write access)
• Viewer: Company-level (read-only access)

Next Steps

1. Complete Company Management (CompaniesController + views)
2. Complete User Management (CompanyUsersController + views)
3. Update Navigation (_Layout.cshtml)
4. Apply Migration (database update)
5. End-to-End Testing

File Changes Summary

New Files Created

• src/PowderCoating.Core/Entities/Company.cs
• src/PowderCoating.Core/Interfaces/ITenantContext.cs
• src/PowderCoating.Infrastructure/Services/TenantContext.cs
• src/PowderCoating.Infrastructure/Migrations/20260205220415_AddMultiTenancy.cs

Modified Files

• src/PowderCoating.Core/Entities/BaseEntity.cs - Added CompanyId
• src/PowderCoating.Core/Entities/ApplicationUser.cs - Added CompanyId, Company, CompanyRole
• src/PowderCoating.Infrastructure/Data/ApplicationDbContext.cs - Query filters, relationships, auto-set CompanyId
• src/PowderCoating.Infrastructure/Data/SeedData.cs - Multi-tenancy seeding
• src/PowderCoating.Shared/Constants/AppConstants.cs - SuperAdmin role, CompanyRoles
• src/PowderCoating.Web/Program.cs - ITenantContext registration, authorization policies

Known Issues / Warnings

1. EF Warning: "Entity 'Company' has a global query filter defined and is the required end of a relationship"

   • This is expected and doesn't affect functionality
   • Company navigation on ApplicationUser is nullable to handle this

2. Migration Data Loss Warning: "An operation was scaffolded that may result in the loss of data"

   • The migration adds non-nullable CompanyId columns
   • Existing data will have CompanyId=0 initially
   • SeedData creates default company and should assign users to it
   • Manual data migration may be needed for existing production data