NutcaseandGitHub 23c7bbabef New features (#66)
* refactor: Rename handler package to handlers in carrier-connector

- Rename internal/handler directory to internal/handlers
- Update handler import path in main.go and routes.go

* feat: Add SM-DP+ handler with multi-carrier management and profile operations

- Add SMDPHandler struct with manager field and NewSMDPHandler constructor
- Add AddCarrier endpoint with JSON binding and carrier configuration support
- Add RemoveCarrier endpoint with carrier ID parameter validation
- Add DownloadProfile endpoint with 30-second timeout and context cancellation
- Add GetCarrierStatus endpoint returning all carriers with timestamp
- Add GetProfileStatus endpoint with EID/ICCID validation

* feat: Add SM-DP+ integration layer with multi-carrier system initialization and route registration

- Add SMDPIntegration struct with service, handler, repository, and logger fields
- Add NewSMDPIntegration constructor with default carrier initialization
- Add InitializeSystem method with carrier health logging and status tracking
- Add RegisterRoutes method with profile, carrier, health, and metrics endpoints
- Add healthHandler with carrier health status aggregation and degraded state detection
- Add metricsHandler

* feat: Add SM-DP+ service layer with multi-carrier management and profile download operations

- Add SMDPService struct with manager, repository, and logger fields
- Add NewSMDPService constructor with default config and background health checking
- Add InitializeDefaultCarriers with AT&T, Verizon, and T-Mobile DE configurations
- Add DownloadProfile method with context support and request logging
- Add GetOptimalCarrier wrapping SelectCarrier for best carrier selection
- Add GetCarrierHealth returning

* feat: Add SM-DP+ manager with multi-carrier load balancing, health checking, and profile operations

- Add DefaultManagerConfig with 30s health checks, 3 retries, and circuit breaker configuration
- Add CarrierConfig struct with ES2 settings, MCC/MNC, priority, and feature support
- Add ToCarrier method converting CarrierConfig to Carrier with metrics and capabilities
- Add HealthChecker with periodic carrier health monitoring and status evaluation
- Add LoadBalancer with weighted round-robin, least

* feat: Add intelligent carrier selection service with scoring, recommendations, and analytics

- Add SelectionService struct with manager, handler, and logger fields
- Add NewSelectionService constructor with info-level logging
- Add IntelligentCarrierSelection method with comprehensive criteria evaluation
- Add IntelligentSelectionRequest with region, profile type, urgency, and cost sensitivity
- Add UserPreferences and BusinessContext structs for selection customization
- Add IntelligentSelectionResponse with selected

* feat: Add carrier selection handler with optimal selection, analytics, and performance monitoring endpoints

- Add SelectionHandler struct with manager and logger fields
- Add NewSelectionHandler constructor with info-level logging
- Add SelectOptimalCarrier endpoint with criteria validation and scoring
- Add SelectCarrier endpoint using default selection criteria
- Add GetSelectionHistory endpoint with carrier ID path parameter
- Add UpdateLearning endpoint with performance feedback validation
- Add GetSelectionAnalytics endpoint with carrier stats

* feat: Add carrier selection integration layer with multi-carrier setup, HTTP server, and demo capabilities

- Add SelectionIntegration struct with manager, selection service, handler, and SMDP service fields
- Add NewSelectionIntegration constructor with default manager config and 30s health checks
- Add SetupCarriers with AT&T, Verizon, T-Mobile DE, and Orange FR configurations
- Add StartServer method with health endpoint and 30s read/write timeouts
- Add StartHealthChecking wrapper for background

* feat: Refactor profile handlers into modular core components with simplified operations

- Split profile_handlers.go into profile_handlers_core.go, profile_handlers_management_core.go, and profile_handlers_management_delete.go
- Simplify OrderProfileHandlerWithRepo with ICCID/IMSI-only validation and "downloaded" state
- Remove webhook and message queue notifications from order handler
- Add UpdateProfileHandler with state validation for downloaded/activated/deactivated/expired
- Add DeleteProfileHandler with existence

* refactor: Extract carrier setup logic into separate file and remove unnecessary comments

- Move SetupCarriers method from selection_integration.go to new setup_carriers.go file
- Remove redundant comments from SelectionIntegration struct and methods
- Clean up inline comments in RunDemo method while preserving functionality

* feat: Add intelligent carrier selection algorithm with machine learning optimization and performance tracking

- Add SelectionAlgorithm with scoring, weighting, and ML-based carrier selection
- Add SelectionCriteria struct with region, profile type, urgency, and cost/performance weights
- Add CarrierScore with performance, reliability, cost, region, and capability scores
- Add calculateWeightedScore combining all scores with ML-optimized weights
- Add getWeights with urgency-based adjustments

* feat: Integrate SelectionAlgorithm into SMDPManager with optimal carrier selection and learning capabilities

- Add selector field to SMDPManager struct with SelectionAlgorithm type
- Initialize selector in NewSMDPManager constructor
- Add SelectOptimalCarrier method filtering healthy carriers and delegating to selection algorithm
- Add SelectCarrier wrapper with default criteria (operational profile, medium urgency, balanced weights)
- Add GetSelectionHistory method returning carrier selection history
- Add UpdateLearning

* refactor: Simplify profile handler function names by removing WithRepo suffix

- Rename ListProfilesHandlerWithRepo to ListProfilesHandler
- Rename GetProfileHandlerWithRepo to GetProfileHandler
- Rename DeleteProfileHandlerWithRepo to DeleteProfileHandler

* feat: Add pricing engine with rate plan validation, cost calculation, and price optimization

- Add PricingEngine struct with repository and logger fields
- Add ValidateRatePlan with comprehensive validation for fields, dates, allowances, overage rates, discounts, and early termination
- Add CalculateOptimalPrice with market analysis and recommended pricing based on competitor data
- Add ValidateSubscription with plan availability, validity dates, and discount validation
- Add CalculateSubscriptionCost with base

* feat: Add rate plan analytics handlers with usage, revenue, popularity, and dashboard endpoints

- Add AnalyticsResponse struct with success, message, and data fields
- Add GetUsageAnalytics with date range parsing, default last month period, and group by support
- Add GetRevenueAnalytics with RFC3339 date parsing and configurable filters
- Add GetPopularPlans with configurable limit defaulting to 10
- Add GetDashboardData aggregating top 5 popular plans, 30-day usage analytics, and revenue analytics

* feat: Add rate plan handler layer with CRUD operations, management endpoints, and analytics support

- Add RatePlanHandler struct with service and logger fields
- Add CreateRatePlan with JSON binding, draft status initialization, and comprehensive field mapping
- Add GetRatePlan with ID path parameter extraction and not found handling
- Add UpdateRatePlan with selective field updates and existing plan retrieval
- Add DeleteRatePlan with active subscription conflict detection
- Add ListRatePlans with carrier

* feat: Add rate plan type system with comprehensive domain models, allowances, subscriptions, and analytics support

- Add RatePlan struct with carrier, region, pricing, allowances, features, discounts, and validity fields
- Add PlanType enum with prepaid, postpaid, hybrid, pay-as-you-go, and unlimited options
- Add PlanStatus enum with draft, active, inactive, archived, and suspended states
- Add BillingCycle enum with daily, weekly, monthly, quarterly, and yearly options
- Add DataAllowance, VoiceAllowance, and

* feat: Add rate plan service layer with CRUD operations, subscription management, usage tracking, and analytics support

- Add Service struct with repository and logger fields
- Add CreateRatePlan with ID generation, validation, and comprehensive field checks
- Add GetRatePlan, UpdateRatePlan, and DeleteRatePlan with active subscription conflict detection
- Add ListRatePlans and SearchRatePlans with filtering and sorting support
- Add SubscribeToPlan with plan availability validation, duplicate subscription

* feat: Add carrier integration layer with optimal carrier selection, rate plan recommendations, and analytics support

- Add CarrierSelectionIntegrator struct with rate plan repository, SMDP manager, and logger fields
- Add GetOptimalCarrierWithRatePlan with region filtering, carrier grouping, performance scoring, and combined evaluation
- Add RecommendRatePlansForCarrier with carrier validation, active plan filtering, and recommendation creation
- Add UpdateCarrierSelectionCriteria with 30-day usage analytics

* feat: Add rate plan repository interface with GORM models and extended types for carrier integration

- Add Repository interface with rate plan CRUD, subscription management, usage tracking, and analytics operations
- Add GORM table name methods for RatePlan, RatePlanSubscription, and RatePlanUsage models
- Add GORM hooks with automatic timestamp handling for BeforeCreate and BeforeUpdate operations
- Add SearchCriteria with carrier, region, plan type, price range, pagination, and sorting fields

* feat: Refactor pricing engine by extracting calculation methods into separate file

- Move calculateDataOverage, calculateVoiceOverage, calculateSMSOverage, calculateDiscounts, and calculateRecommendedPrice to price_calculation.go
- Remove validation helper methods from pricing_engine.go
- Remove PriceOptimization and CostBreakdown type definitions
- Update Logger interface to use `any` instead of `interface{}`
- Remove inline comments throughout pricing_engine.go
- Add switch statement for discount type handling in calculateDiscounts

* refactor: Extract core rate plan types into separate file

- Move RatePlan struct from types.go to types_core.go
- Move PlanType enum with prepaid, postpaid, hybrid, pay-as-you-go, and unlimited options to types_core.go
- Move PlanStatus enum with draft, active, inactive, and archived states to types_core.go
- Move BillingCycle enum with daily, weekly, monthly, quarterly, and yearly options to types_core.go
- Add documentation comments for PlanType, PlanStatus, and BillingCycle enums
- Remove PlanStatusSuspended from PlanStatus enum

* feat: Add GORM repository implementation with CRUD operations, subscription management, usage tracking, and analytics support

- Add GormRepository struct with database and logger fields
- Add CreateRatePlan, GetRatePlan, UpdateRatePlan, and DeleteRatePlan with automatic timestamp handling
- Add ListRatePlans with carrier, region, plan type, status, price range, and validity filtering
- Add CountRatePlans with comprehensive filter support
- Add CreateSubscription, GetSubscription, UpdateSubscription, and DeleteSubscription with timestamp

* feat: Add carrier configuration layer with GORM repository, file loading, and model conversion support

- Add GormCarrierRepository struct with database and logger fields
- Add CarrierModel with ID, name, MCC, MNC, country code, active status, priority, ES2 config, capabilities, and timestamp fields
- Add GetCarriers with active carrier filtering and model-to-carrier conversion
- Add GetCarrier with ID lookup and not found handling
- Add SaveCarrier with upsert logic for create or update operations

* feat: Add carrier configuration file loading with JSON-based carrier setup and validation

- Add carriers.json with AT&T US, Verizon US, T-Mobile Germany, Orange France, and Vodafone UK configurations
- Add LoadCarriersFromFile with JSON parsing and config file reading
- Add ConvertConfigToCarriers with model-to-carrier conversion logic
- Add validateCarrier with ID, name, MCC, MNC, country code, and ES2 config validation
- Replace hardcoded carrier setup with file-based configuration loading
- Add success

* refactor: Extract service methods into separate files for better organization

- Move GetUsage, GetUsageHistory, GetUsageAnalytics, GetRevenueAnalytics, and GetPopularPlans to service_analytics.go
- Move validateRatePlan, validateSubscribeRequest, calculateNextBillingDate, and calculateCycleEnd to service_methods.go
- Move SubscribeToPlan, GetSubscription, UpdateSubscription, CancelSubscription, GetActiveSubscription, and ListSubscriptions to service_subscriptions.go
- Move RecordUsage to service_usage.go

* feat: Add currency configuration file with 20 major currencies and regional support

- Add currencies.json with USD, EUR, GBP, JPY, CAD, AUD, CHF, CNY, INR, BRL, MXN, SEK, NOK, DKK, SGD, HKD, NZD, ZAR, KRW, and TRY configurations
- Add currency metadata with code, name, symbol, decimal places, active status, and supported regions
- Add regional mappings for currency support across multiple countries and territories

* feat: Add currency analytics service with revenue tracking, transaction analysis, and usage statistics

- Add AnalyticsServiceImpl struct with repository and logger fields
- Add GetRevenueByCurrency with completed transaction filtering and revenue aggregation by currency
- Add GetTransactionVolumeByCurrency with transaction count grouping
- Add GetExchangeRateTrends with historical rate retrieval and date-based filtering
- Add GetCurrencyUsageStats with total/active currency counts, transaction volume

* feat: Add multi-currency billing service with transaction processing, currency conversion, and history tracking

- Add BillingServiceImpl struct with repository, exchange service, logger, and base currency fields
- Add NewBillingService constructor with dependency injection
- Add ProcessBilling with request validation, currency conversion, transaction creation, and payment processing
- Add ConvertAmount wrapper delegating to exchange service
- Add GetBillingHistory with profile ID filtering and transaction retries

* feat: Add exchange rate service with multi-provider support, currency conversion, and historical rate tracking

- Add ExchangeRateService struct with repository, logger, providers, and base currency fields
- Add NewExchangeRateService constructor and AddProvider for provider registration
- Add GetExchangeRate with repository caching, provider fallback, and same-currency handling
- Add ConvertAmount wrapper with exchange rate retrieval and amount calculation
- Add RefreshRates with multi-provider rate

* refactor: Extract currency interfaces and GORM models into separate files

- Move Repository, ExchangeRateProvider, BillingService, and AnalyticsService interfaces from types.go to new interface.go
- Move BillingSummary and CurrencyUsageStats structs to interface.go
- Move CurrencyModel, ExchangeRateModel, and TransactionModel to new models.go
- Move GORM hooks (BeforeCreate, BeforeUpdate) and TableName methods to models.go
- Remove redundant comments from exchange_rate_service.go

* feat: Add rate plan currency integrator with subscription creation, cost calculation, and multi-currency billing support

- Add RatePlanCurrencyIntegrator struct with billing service, exchange service, rate plan service, logger, and base currency fields
- Add NewRatePlanCurrencyIntegrator constructor with dependency injection
- Add SubscribeToPlanWithCurrency with price conversion, subscription creation, and initial billing processing
- Add CalculatePlanCostInCurrency with base cost calculation

* feat: Add currency repository with GORM implementation, rate plan integration, and transaction management

- Add GormRepository with CRUD operations for currencies, exchange rates, and transactions
- Add repository helper methods for model-to-domain conversions with JSON metadata handling
- Add GetHistoricalRates with date range filtering and chronological ordering
- Add ListExchangeRates with currency pair, active status, and date range filtering
- Add CreateTransaction, GetTransaction, UpdateTransaction, and List

* feat: Add currency handler layer with conversion, billing, exchange rates, and analytics endpoints

- Add CurrencyHandler struct with billing service, exchange service, and logger fields
- Add ConvertCurrency endpoint with JSON binding and amount conversion support
- Add GetExchangeRate endpoint with currency pair path parameters
- Add ProcessBilling endpoint with billing request validation and transaction processing
- Add GetBillingHistory with profile ID filtering, date range, limit, and offset support

* refactor: Rename service package to services and move repository implementations to repository package

- Rename internal/service to internal/services in carrier-connector
- Update service imports in selection_integration.go and smdp_integration.go
- Move currency repository files from internal/currency to internal/repository
- Move rate plan repository files from internal/rateplan to internal/repository
- Update package declarations and imports for currency domain types
- Add currency package imports

* refactor: Add ExchangeRateService interface and format currency types with consistent alignment

- Add ExchangeRateService interface with GetExchangeRate, ConvertAmount, GetRateHistory, UpdateExchangeRate, GetSupportedCurrencies, ValidateCurrencyPair, and RefreshRates methods
- Add CurrencyRevenue struct with currency and revenue fields
- Add TransactionTypeStats struct with type, count, amount, and currency fields
- Align struct field tags consistently across Currency, ExchangeRate, Transaction, and request/response types

* refactor: Update service layer to use repository package types and align imports

- Update Service struct to use repository.Repository interface
- Update all method signatures to use repository package types (RatePlan, RatePlanSubscription, RatePlanUsage, etc.)
- Update filter and request types to use repository package (RatePlanFilter, SubscriptionFilter, CalculateCostRequest, etc.)
- Update status constants to use repository package (SubscriptionStatusActive, PlanStatusActive, DiscountTypePercentage, DiscountTypeFixed)

* refactor: Update handler constructors to use interface types instead of concrete implementations

- Update CurrencyHandler.exchangeService field from *currency.ExchangeRateService to currency.ExchangeRateService interface
- Update NewCurrencyHandler parameter from *currency.ExchangeRateService to currency.ExchangeRateService interface
- Update RatePlanHandler.service field from *rateplan.Service to rateplan.Service interface
- Update NewRatePlanHandler parameter from *rateplan.Service to rateplan.Service interface

* refactor: Rename currency parameter from 'currency' to 'curr' in currencyToModel helper method and add Service interface to rate plan package

- Rename currency parameter to curr in GormRepository.currencyToModel to avoid shadowing currency package name
- Add Service interface with rate plan, subscription, usage, and analytics operations
- Add CreateRatePlan, GetRatePlan, UpdateRatePlan, DeleteRatePlan, ListRatePlans, and SearchRatePlans methods
- Add SubscribeToPlan, GetSubscription, UpdateSubscription, CancelSubscription, GetActiveSubscription, and ListSubscriptions methods
- Add Rec

* feat: Add repository types package with rate plan, subscription, usage, and analytics domain models

- Add Repository interface with rate plan CRUD, subscription management, usage tracking, and analytics operations
- Add RatePlan struct with pricing, allowances, overage rates, discounts, and metadata fields
- Add RatePlanSubscription struct with billing cycle, auto-renewal, and applied discounts support
- Add RatePlanUsage struct with cycle tracking and data/voice/SMS usage metrics
- Add filter types for rate plans, subscriptions, usage analytics, and revenue analytics

* feat: Add tenant handler layer with CRUD, user management, API keys, and analytics endpoints

- Add TenantHandler struct with tenant service and logger fields
- Add CreateTenant, GetTenant, GetTenantByDomain, UpdateTenant, DeleteTenant, and ListTenants endpoints
- Add AddUserToTenant, GetTenantUser, UpdateTenantUser, RemoveUserFromTenant, and ListTenantUsers endpoints
- Add CreateAPIKey, GetAPIKey, UpdateAPIKey, DeleteAPIKey, and ListAPIKeys endpoints with key string return on creation

* feat: Add tenant analytics service with dashboard, usage, performance, cost analytics, and comprehensive reporting

- Add TenantAnalyticsService struct with repository, metrics collector, event publisher, and logger fields
- Add GetTenantDashboard with usage stats, metrics, recent events, and quota status aggregation
- Add GetTenantMetrics with active users, request tracking, error rate calculation, response time analysis, and health score computation
- Add GetUsageAnalytics with time range filtering, resource type breakdown

* feat: Add tenant types package with filters, requests, usage stats, events, and metrics domain models

- Add TenantFilter with ID, name, domain, status, plan, pagination, and sorting fields
- Add CreateTenantRequest, UpdateTenantRequest with plan, limits, settings, and metadata support
- Add TenantUserFilter, CreateTenantUserRequest, UpdateTenantUserRequest with role and status management
- Add CreateAPIKeyRequest, UpdateAPIKeyRequest with permissions, rate limits, and expiration support
- Add TenantUs

* feat: Add tenant integration layer with repository wrapper, service manager, quota checker, and event logger

- Add TenantAwareCurrencyRepository wrapper with tenant isolation for all currency repository methods
- Add NewTenantAwareCurrencyRepository and WithTenant methods for tenant context management
- Add TenantIntegrationManager with GetTenantAwareServices for tenant validation and configuration
- Add TenantAwareServices struct with tenant context, config, and currency service fields
- Add TenantResourceQuotaChecker

* feat: Add tenant package interfaces with repository, service, middleware, and supporting components

- Add Repository interface with tenant CRUD, user management, API keys, usage tracking, config, and event operations
- Add Service interface with tenant management, user operations, API key handling, quota checking, config management, authentication, and analytics methods
- Add Middleware interface with request extraction, access validation, context injection, rate limiting, and resource isolation

* feat: Add tenant middleware with authentication, authorization, isolation, and activity logging

- Add TenantMiddleware struct with tenant service and logger fields
- Add ExtractTenantFromHeader and ExtractTenantFromAPIKey methods for tenant identification from headers, subdomains, and API keys
- Add RequireTenant middleware with header and API key extraction fallback and tenant access validation
- Add RequireTenantRole middleware with role-based access control for multiple required roles

* feat: Add tenant domain models with multi-tenancy support, user management, usage tracking, and API key authentication

- Add Tenant struct with plan, limits, settings, and metadata fields
- Add TenantStatus constants (active, inactive, suspended, deleted)
- Add TenantPlan constants (free, basic, pro, enterprise)
- Add TenantSettings with currency, feature flags, rate limiting, security, and compliance configuration
- Add PasswordPolicy struct with length, character requirements, and age settings

* feat: Add tenant repository implementation with GORM-based data access layer for multi-tenancy support

- Add GormTenantRepository struct with GORM database field
- Add CreateTenant, GetTenant, GetTenantByDomain, UpdateTenant, DeleteTenant methods with context support
- Add ListTenants and CountTenants with filtering by ID, name, domain, status, plan, sorting, and pagination
- Add CreateTenantUser, GetTenantUser, UpdateTenantUser, DeleteTenantUser methods for user management
- Add ListTenantUsers and

* feat: Add tenant service extended methods with quota management, usage tracking, permissions, and metrics collection

- Add CheckQuota method with quota limit validation, unlimited quota support (-1), and quota exceeded event logging
- Add GetUsageStats with resource breakdown, quota status calculation, warning/critical thresholds, and active user counting
- Add UpdateUsage with automatic usage record creation and existing record updates
- Add GetQuotaStatus, GetTenantConfig, UpdateTenantConfig, Get

* feat: Add tenant service implementation with CRUD operations, user management, API key handling, and event logging

- Add ServiceImpl struct with repository, rate limiter, event publisher, config manager, audit logger, metrics collector, and logger fields
- Add CreateTenant with validation, domain uniqueness check, default settings/quotas/features initialization, and tenant created event
- Add GetTenant, GetTenantByDomain, UpdateTenant, DeleteTenant, and ListTenants methods with event logging

* feat: Add tenant-aware repository layer with isolation, validation, query building, and resource access control

- Add TenantAwareRepository with GORM database and tenant ID fields
- Add NewTenantAwareRepository, WithTenant, GetTenantID, ValidateTenant methods for tenant context management
- Add TenantScopedQuery and TenantScopedTransaction for tenant-isolated database operations
- Add CreateWithTenant, GetByTenantID, UpdateWithTenant, DeleteWithTenant, ListWithTenant, CountWithTenant helper methods
- Add TenantA

* refactor: Move tenant repository files to repository package and update imports

- Move tenant_aware_repository.go from internal/tenant to internal/repository package
- Move repository.go to tenant_repository.go in internal/repository package
- Add tenant package import for type references in tenant_repository.go
- Update filter type references to use tenant package prefix (TenantFilter, TenantUserFilter, TenantUsageFilter)
- Update return type for GetUsageStats to use tenant.TenantUsageStats

* feat: Add tenant integration layer with repository wrapper, analytics types, and performance monitoring

- Add TenantAwareCurrencyRepository wrapper with tenant isolation for all currency repository methods
- Add NewTenantAwareCurrencyRepository and WithTenant methods for tenant context management
- Add TenantIntegrationManager with GetTenantAwareServices for tenant validation and configuration
- Add TenantAwareServices struct with tenant context, config, and currency service fields
- Add TenantResource

* feat: Add currency analytics, billing, and exchange rate services with multi-currency support and transaction processing

- Add AnalyticsServiceImpl with revenue/volume analysis, exchange rate trends, usage stats, and transaction type analytics
- Add GetRevenueByCurrency, GetTransactionVolumeByCurrency, GetExchangeRateTrends, GetCurrencyUsageStats methods
- Add GetMonthlyRevenueTrends, GetTopCurrenciesByRevenue, GetTransactionTypeAnalytics for reporting
- Add BillingServiceImpl with multi-currency billing, payment

* refactor: Update tenant integration to use concrete service types and tenant package imports

- Change TenantIntegrationManager.tenantService from Service interface to *services.TenantServiceImpl concrete type
- Change TenantResourceQuotaChecker.tenantService from Service interface to *services.TenantServiceImpl
- Change TenantEventLogger.tenantService from Service interface to *services.TenantServiceImpl
- Update TenantAwareServices fields to use tenant package types (TenantContext, TenantConfig)

* feat: Add TenantRepository interface with CRUD operations, user management, API keys, usage tracking, and event logging

- Add TenantRepository interface with CreateTenant, GetTenant, GetTenantByDomain, UpdateTenant, DeleteTenant, ListTenants, CountTenants methods
- Add CreateTenantUser, GetTenantUser, UpdateTenantUser, DeleteTenantUser, ListTenantUsers, CountTenantUsers for user management
- Add CreateAPIKey, GetAPIKey, GetAPIKeyByHash, UpdateAPIKey, DeleteAPIKey, ListAPIKeys for API key operations

* refactor: Extract ES2 types from client.go to separate types.go file

- Move ES2Client struct definition from client.go to types.go
- Move DownloadProfileRequest, DownloadProfileResponse, GetProfileStatusRequest, GetProfileStatusResponse types to types.go
- Move DeleteProfileRequest, DeleteProfileResponse, EnableProfileRequest, EnableProfileResponse types to types.go
- Move DisableProfileRequest, DisableProfileResponse types to types.go
- Add net/http, time, and config package imports to types.go

* refactor: Move tenant repository implementation to tenant package and update imports

- Move GormTenantRepository implementation from repository package to tenant package
- Move TenantResourceValidator from repository to tenant package
- Update tenant_aware_repository.go to import tenant package for Tenant and TenantStatusActive types
- Remove duplicate tenant model definitions and helper methods from repository package
- Update ValidateTenant to use tenant.Tenant and tenant.TenantStatusActive types

* refactor: Refactor tenant and rate plan services with improved code organization and currency integration updates

- Update RatePlanCurrencyIntegrator to use billingService.ConvertAmount with CurrencyConversionRequest struct instead of exchangeService
- Remove calculateOverageCost method from rateplan_methods.go (moved or deprecated)
- Rename tenant variable to newTenant in CreateTenant to avoid shadowing
- Extract tenant user methods from tenant_user.go to new tenant_user_methods.go file

* refactor: Add rate plan currency integration service and update tenant repository with user count method

- Add RatePlanCurrencyIntegrator with SubscribeToPlanWithCurrency, CalculatePlanCostInCurrency, calculateOverageCost methods
- Add NewRatePlanCurrencyIntegrator constructor with billingService, exchangeService, ratePlanService, logger, baseCurrency fields
- Add currency conversion support for rate plan subscriptions with exchange rate metadata tracking
- Add billing integration for initial subscription

* refactor: Replace map[string]interface{} with map[string]any across currency, handlers, integration, and rateplan packages

- Update BillingSummary.Breakdown field type from map[string]interface{} to map[string]any
- Update Transaction.Metadata field type from map[string]interface{} to map[string]any
- Update RatePlanCurrencyIntegrator subscription and billing metadata to use map[string]any
- Update handler request/response types to use map[string]any (CreateRatePlanRequest, UpdateRatePlanRequest,

* refactor: Implement tenant analytics dashboard and usage analytics with helper methods

- Implement GetTenantDashboard with usage stats, metrics, recent events, and quota status
- Implement GetUsageAnalytics with usage by type, trends, and peaks
- Implement GetPerformanceAnalytics with API performance, resource performance, errors, and slow queries
- Extract helper methods to tenant_analytics_mock.go: parseTimeRange, parseAPIRequestEvent, parseErrorEvent, parseSlowQueryEvent, calculateAPIPerformance, build

* refactor: Remove unused rate plan currency integrator and tenant analytics mock helper methods

- Delete RatePlanCurrencyIntegrator implementation from rateplan_core.go
- Delete SubscribeToPlanWithCurrency, CalculatePlanCostInCurrency, calculateOverageCost methods
- Delete tenant analytics mock helper methods from tenant_analytics_mock.go
- Remove getMockResourceCount, getMockQuotaLimit, getMockQuotaUsed, parseTimeRange methods
- Remove parseAPIRequestEvent, parseErrorEvent, parseSlowQueryEvent, calculateAPI

* feat: Add pricing handlers with CRUD operations, rule application, price calculation, and analytics endpoints

- Add PricingHandler with CreateRule, GetRule, UpdateRule, DeleteRule, ListRules methods
- Add CalculatePrice endpoint for price calculation based on active rules
- Add ApplyRules endpoint for applying specific pricing rules to context
- Add GetAnalytics endpoint for retrieving pricing analytics by tenant
- Add RegisterRoutes method to register pricing routes under /pricing group

* feat: Add Snowflake ID generator with thread-safe generation, parsing utilities, and default generator

- Add Snowflake struct with mutex, timestamp, nodeID, sequence fields
- Add NewSnowflake constructor with nodeID validation (0 to MaxNodeID range)
- Add Generate method with sequence overflow handling and millisecond-based timestamp
- Add GenerateString method for string representation of generated IDs
- Add Parse, Time, NodeID, Sequence utility functions for ID decomposition
- Add defaultGenerator

* refactor: Extract tenant integration helper types to separate file and replace ID generation with id package

- Move TenantAwareServices, TenantResourceQuotaChecker, TenantEventLogger from tenant_integration.go to tenant_integration_core.go
- Move wrapCurrencyService, NewTenantResourceQuotaChecker, NewTenantEventLogger, CheckQuota, UpdateUsage methods to tenant_integration_core.go
- Move LogResourceAccess, LogQuotaViolation methods to tenant_integration_core.go
- Replace generateID helper with id.

* feat: Add pricing interfaces and types for dynamic pricing rule management

- Add Repository interface with CreateRule, GetRule, UpdateRule, DeleteRule, ListRules, CountRules methods
- Add GetActiveRules, GetRulesByType methods for rule evaluation
- Add Service interface with rule management, pricing calculations, validation, and analytics methods
- Add RuleEngine interface with EvaluateRule, ApplyRule, ValidateConditions, ExecuteActions methods
- Add PricingEventHandler interface for rule lifecycle events
- Add PricingValidator interface for rule and context validation
- Add PricingCache interface for caching pricing data

* refactor: Refactor tenant analytics to use repository data and extract helper methods to separate files

- Move parseAPIRequestEvents, buildResourcePerformance, parseErrorEvents, parseSlowQueryEvents from tenant_analytics_mock.go to tenant_analytics.go
- Update buildUsageByType to fetch usage statistics from repository instead of using mock data
- Add calculateResourceUsageAnalytics helper to calculate analytics from usage records
- Update buildUsageTrends to use repository data with buildUsageTrendData helper
- Update buildUsagePeaks to use repository data with buildUsagePeakData helper

* feat: Add pricing repository, tenant-aware transaction support, and pricing integration service

- Add GormPricingRepository with CreateRule, GetRule, UpdateRule, DeleteRule, ListRules, CountRules methods
- Add GetActiveRules, GetRulesByType methods for retrieving active pricing rules by tenant and type
- Add TenantScopedDB wrapper with automatic tenant filtering for tenant-aware database operations
- Implement TenantScopedTransaction with tenant context propagation and automatic filtering

* refactor: Extract helper methods, fix formatting, and add TODO comments for pending implementations

- Extract generateHistoryAnalytics helper in selection_handler_methods.go
- Extract generateRecommendations helper in selection_handler_selection.go
- Extract parsePositiveInt helper in rateplan_handlers_analytics.go
- Replace hardcoded URL path with action parameter in ES2Service.sendActivationRequest
- Add TODO comments for wrapCurrencyService and updateCarrierWeights pending implementations
- Fix struct field alignment and formatting in carrier_methods.go

* refactor: Replace time and ID generation helpers with centralized id package utilities

- Replace getCurrentTime() calls with id.GetCurrentTime() in pricing_integration.go and pricing_service.go
- Replace generateRuleID() with id.GenerateRuleID() in pricing rule creation
- Replace generateEventID() with id.GenerateEventID() in tenant middleware
- Remove local helper functions: generateRuleID, getCurrentTime, generateEventID, generateRandomString, getCurrentTimestamp
- Remove unused time package imports

* feat: Add ID generation utilities with rule ID, event ID, and random string generators

- Add GenerateRuleID function using nanosecond timestamp
- Add GetCurrentTime helper returning current time
- Add GenerateEventID function with "evt_" prefix and 16-character random string
- Add GenerateRandomString function with alphanumeric charset

* feat: Refactor ID generation to use Snowflake IDs with prefixes and add domain-specific ID generators

- Replace timestamp-based GenerateRuleID with Snowflake-based GeneratePrefixed("rule")
- Replace random string-based GenerateEventID with Snowflake-based GeneratePrefixed("evt")
- Add GenerateUsageID with resourceType and tenantID parameters for traceable usage IDs
- Add GenerateAPIID, GenerateTenantID, GenerateProfileID, GenerateSubscriptionID, GenerateCarrierID, GeneratePricingID generators

* feat: Add tenant-aware rate limiter with sliding window counters and plan-based limits

- Add TenantRateLimiter with plan-based rate limits for Free, Basic, Pro, and Enterprise tiers
- Add RateLimit struct with RequestsPerMinute, RequestsPerHour, RequestsPerDay, and BurstSize fields
- Add TenantUsageTracker with sliding window counters for minute, hour, and day tracking
- Add SlidingWindowCounter with Allow and Count methods for time-based request tracking
- Add AllowRequest method with multi-tier rate limit

* feat: Implement tenant-aware currency service wrapper with billing isolation and audit logging

- Add TenantAwareCurrencyService struct with tenantID, billingService, and logger fields
- Add ProcessBilling method with tenant context logging for billing requests
- Add ConvertAmount method with tenant context logging for currency conversions
- Add GetBillingHistory method with tenant context logging for transaction retrieval
- Add CalculateTotalBilling method with tenant context logging for billing summ

* feat: Implement carrier weight updates, pricing analytics calculations, and tenant rate limiting

- Add updateCarrierWeights implementation with regional and plan-based weight adjustments in carrier_methods.go
- Add calculateRegionalWeightAdjustment helper with usage-based weight scaling and clamping
- Add calculatePlanWeightAdjustment helper with plan usage analysis and adjustment limits
- Add calculateConversionRate helper in pricing_integration.go using discount statistics and active rule ratios

* feat: Implement refund processing and billing analytics endpoints in currency handlers

- Add ProcessRefund implementation with negative billing entry for refunds and transaction ID fallback
- Add GetBillingAnalytics implementation with date range filtering, billing summary calculation, and transaction history
- Add default 30-day date range for analytics with RFC3339 date parsing for custom ranges
- Replace NotImplemented responses with full BillingService integration

* feat: Implement carrier metrics persistence with dedicated metrics table and timestamp updates

- Replace mock logging with actual database persistence in UpdateCarrierMetrics
- Add carrier record timestamp update with updated_at field
- Add carrier_metrics table insertion with JSON-serialized metrics data
- Add metricsRecord struct with CarrierID, MetricsData, and RecordedAt fields
- Add zero-division protection for success rate calculation
- Update logging to use structured fields with WithField

* feat: Add tenant context injection to currency service methods for downstream isolation

- Replace TODO comments with context.WithValue calls injecting tenant_id in ProcessBilling
- Add tenant context injection in ConvertAmount for tenant-specific exchange rates
- Add tenant context injection in GetBillingHistory for repository-level filtering
- Add tenant context injection in CalculateTotalBilling for scoped calculations
- Update comments to reflect context-based isolation strategy

* feat: Implement rate limiting and resource access validation in tenant middleware

- Add RateLimit implementation with tenant context retrieval and plan-based rate limit checking
- Add rate limit exceeded logging with tenant_id and endpoint fields
- Add HTTP 429 response with error message and endpoint when rate limit exceeded
- Add ValidateResourceAccess implementation with tenant ownership verification
- Add context injection for validated_resource, validated_resource_id, and tenant_id

* refactor: Extract CRUD operations from pricing service into separate file and improve discount extraction logic

- Move CreateRule, GetRule, UpdateRule, DeleteRule, ListRules, CalculatePrice, and ApplyRules to pricing_service_crud.go
- Remove duplicate struct and constructor comments from pricing_service.go
- Replace hardcoded discount values in extractDiscountValue with actual rule Actions field parsing
- Add AdjustmentType-based discount calculation for Percentage, Fixed, Multiply, and Override

* feat: Implement MCC-based regional scoring with geographic grouping for carrier selection

- Replace neutral 50.0 score with MCC-to-region mapping logic in calculateRegionScore
- Add mccToRegion function mapping MCC first digit to region codes (EU, NA, AS, OC, AF, SA)
- Add sameRegionGroup function grouping regions into EMEA, AMER, and APAC clusters
- Add 90.0 score for exact MCC region match, 70.0 for same region group, 30.0 for distant regions
- Add MCC range documentation for Europe (2xx), North America (3xx

* feat: Implement revenue analytics calculation, resource performance tracking, and round-robin load balancing

- Add revenue calculation in GetRevenueAnalytics with active subscription base price aggregation
- Add date range filtering for revenue analytics with StartDate and EndDate support
- Add per-plan revenue, subscription count, and average revenue calculations
- Add error handling with partial result fallback for revenue queries
- Replace mock resource performance with event-based performance

* refactor: Replace interface{} with any and optimize slice operations

- Replace map[string]interface{} with map[string]any in UpdateCarrierMetrics
- Replace interface{} with any for GeneratedAt field in PricingEffectiveness struct
- Replace loop-based empty string checks with slices.Contains in ValidateConditions
- Replace range loop index initialization with range-only syntax in calculateAPIPerformance
- Add slices import for standard library slice utilities

* refactor: Update comments in tenant repository to reflect actual implementation

- Replace vague "separate table or log system" comment with specific tenant_events table reference in CreateEvent
- Replace "For now, update tenant settings" with clearer "Store configuration in tenant metadata field and update settings" in UpdateConfig
- Remove "For now, we'll use a simple approach" qualifier from CreateEvent comment
2026-05-02 18:51:28 +03:00
2026-05-02 18:51:28 +03:00
2026-05-02 03:24:14 +03:00

Telecom-as-a-Service (TaaS) Platform

Sovereign, Full-Stack Cellular Connectivity Platform
Built with Go 1.26, Rust 1.95, TypeScript, eBPF, and 5G Core Network Technologies

Overview

The Telecom-as-a-Service (TaaS) Platform is a comprehensive, sovereign cellular connectivity solution that enables organizations to deploy and manage their own private 5G/LTE networks. This full-stack platform provides end-to-end capabilities from core network integration to subscriber management, charging, and developer APIs.

API Gateway Integration

The platform now includes Traefik API Gateway for centralized request routing, security, and monitoring. All services are accessible through a unified HTTPS endpoint with built-in rate limiting, authentication, and SSL termination.

What It Does

The TaaS Platform allows enterprises, telecom operators, and system integrators to:

  • Deploy Private Cellular Networks: Set up and manage private 5G/LTE networks with full control over data sovereignty and security
  • Manage Subscribers: Provision, authenticate, and manage cellular subscribers with role-based access control
  • Real-time Charging: Implement flexible credit control and billing with real-time usage monitoring
  • Developer APIs: Expose cellular network capabilities through REST and GraphQL APIs for custom application development
  • Network Orchestration: Automate network operations, scaling, and health monitoring across distributed infrastructure
  • Service Discovery: Enable dynamic service registration and discovery for microservices architecture

Commercial Applications

The platform is designed for various commercial use cases:

eSIM Operators (Airalo-style)

  • Multi-carrier aggregation across 400+ global carriers
  • Real-time eSIM provisioning via GSMA ES2+ standards
  • Usage-based billing with global rate plans
  • B2B2C model for MVNO partnerships

Enterprise Private Networks

  • Industrial IoT and manufacturing connectivity
  • Campus networks for universities and hospitals
  • Critical infrastructure communications
  • Secure data sovereignty deployments

Telecom Service Providers

  • MVNO enablement platform
  • Network slicing as a service
  • Edge computing integration
  • 5G core network hosting

Architecture

The platform is built as a microservices architecture with the following core components:

API Gateway Layer:

  • Traefik API Gateway: Centralized entry point providing SSL termination, rate limiting, authentication, and request routing
  • Unified HTTPS Endpoint: All services accessible via https://api.telecom.com
  • Security Middleware: JWT authentication, security headers, compression, and retry logic
  • Monitoring Dashboard: Real-time metrics and service health visualization

Core Network Services:

  • API Server: Central BSS (Business Support System) API providing authentication, subscriber management, automation, and plugin system
  • Carrier Connector: ES2+ interface for eSIM profile management and carrier integration
  • Charging Engine: Real-time credit control, usage tracking, and billing with Redis-backed rate limiting
  • Packet Gateway: High-performance eBPF-based packet processing for network traffic routing and QoS enforcement

Supporting Services:

  • Service Discovery (Consul): Dynamic service registration and health checking
  • Message Queue (RabbitMQ): Asynchronous event-driven communication between services
  • Redis: Distributed caching, rate limiting, and session management
  • PostgreSQL: Persistent data storage for subscribers, automations, and configuration
  • Vault: Secure secret management for sensitive credentials and keys

Developer Tools:

  • CLI: Command-line interface for service orchestration, configuration, and health checks
  • Web Dashboard: Next.js-based management interface for network operations
  • TypeScript SDK: Client library for integrating with TaaS APIs
  • Kubernetes Operators: Custom resources for deploying and managing TaaS services

Key Features

API Gateway & Security:

  • Unified HTTPS Endpoint: All services accessible via https://api.telecom.com
  • Centralized Authentication: JWT validation with rate limiting per service
  • SSL Termination: Automatic HTTPS with security headers enforcement
  • Request Routing: Intelligent routing with circuit breakers and retry logic

Sovereignty & Security:

  • Full data sovereignty with on-premise deployment
  • End-to-end encryption for subscriber data
  • Role-based access control (RBAC) with fine-grained permissions
  • Vault-based secret management for credential security

Performance & Scalability:

  • eBPF-accelerated packet processing for line-rate throughput
  • Redis-backed distributed rate limiting and caching
  • Horizontal scaling with Kubernetes orchestration
  • Gateway-level load balancing and connection pooling

Developer Experience:

  • Single API Endpoint: Simplified client integration through gateway
  • REST and GraphQL APIs with comprehensive documentation
  • TypeScript SDK for type-safe client integration
  • Plugin system for extending platform capabilities
  • Automation framework for network operations

Operations:

  • Gateway Dashboard: Real-time monitoring of all services
  • Unified Metrics: Prometheus integration with gateway-level insights
  • Automated scaling and service discovery
  • Centralized logging with structured logs
  • Health checks and failover automation

Technology Stack:

Core Languages & Runtimes:

  • Go 1.26: Core network integration, BSS API, carrier connector
  • Rust 1.95: eBPF packet gateway, real-time charging engine
  • TypeScript/Next.js: Developer dashboard and SDK

Databases:

  • PostgreSQL: Primary database for subscribers, automations, plugins, and configuration
  • Redis: Real-time credit control, caching, and rate limiting
  • MongoDB: Used exclusively by free5GC 5G core network for UDR/UDM subscription data and authentication

5G Core Network:

  • free5GC: Open-source 5G core network (AMF, SMF, UDM, UDR, etc.)

Infrastructure & Orchestration:

  • Kubernetes: Container orchestration and deployment
  • Helm: Package management for Kubernetes deployments
  • Istio: Service mesh for traffic management and security
  • eBPF/Aya: High-performance packet processing in kernel space

Message Queuing & Service Discovery:

  • RabbitMQ: Asynchronous message queue for event-driven communication
  • Consul: Service discovery, health checking, and configuration

Security & Secrets:

  • Vault: Secure secret management for credentials and keys
  • cert-manager: Automated TLS certificate management

Monitoring & Observability:

  • Prometheus: Metrics collection and alerting
  • Grafana: Visualization dashboards for metrics
  • ELK Stack: Elasticsearch, Logstash, Kibana for centralized logging

Prerequisites

  • Go 1.26+: Download
  • Rust 1.95+: curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh
  • Node.js 22+: Download
  • pnpm: npm install -g pnpm
  • Docker: Install
  • PostgreSQL 15+: Install
  • Redis: Install
  • Kubernetes: Install (for production deployment)
  • Helm 3+: Install (for production deployment)
  • MongoDB 7.0+: Install (required for free5GC only)

Installation

# Clone the repository
git clone https://github.com/nutcas3/telecom-platform.git
cd telecom-platform

# Start with API Gateway (includes all services)
./scripts/start-gateway.sh

# Add domain to hosts file
echo "127.0.0.1 api.telecom.com" | sudo tee -a /etc/hosts

# Access services
# API Gateway Dashboard: http://localhost:8080
# API Documentation: https://api.telecom.com/api/v1/swagger
# Web Dashboard: http://localhost:3000

Manual Installation

# Build all components
make all

# Start services (requires separate terminals)
# Terminal 1: API Server
./dist/api-server

# Terminal 2: Carrier Connector
./dist/carrier-connector

# Terminal 3: Charging Engine
./target/release/charging-engine

# Terminal 4: Web Dashboard
cd apps/web-dashboard && pnpm dev

Project Structure

telecom-platform/
|-- apps/
|   |-- api-server/          # Go: Developer BSS API
|   |-- carrier-connector/   # Go: eSIM ES2+ Provisioning
|   |-- charging-engine/     # Rust: OCS Real-time Credit Control
|   |-- packet-gateway/      # Rust: eBPF UPF Data Plane
|   |-- web-dashboard/       # TypeScript: Next.js Frontend
|-- libs/
|   |-- shared-ts-sdk/       # TypeScript: Drop-in Widget SDK
|   |-- proto/               # Shared Protobufs
|-- deployments/
|   |-- kubernetes/          # K8s manifests
|   |-- docker/              # Dockerfiles
|-- traefik/                 # API Gateway configuration
|   |-- traefik.yml          # Static configuration
|   |-- dynamic/             # Dynamic middleware config
|-- docs/                    # Architecture & API docs
|   |-- gateway-quickstart.md # API Gateway guide
|   |-- api-gateway.md       # Gateway implementation details
|-- scripts/                 # Automation scripts
|   |-- start-gateway.sh     # Gateway startup script
|-- docker-compose.yml       # Container orchestration
|-- Makefile                 # Master build orchestrator
|-- Cargo.toml              # Rust workspace config
|-- go.work                 # Go workspace config
|-- pnpm-workspace.yaml     # TypeScript workspace config

Development

Build Commands

# Build everything
make all

# Build specific language
make build-go        # Go services
make build-rust      # Rust components
make build-ui        # TypeScript dashboard

# Run tests
make test

# Clean artifacts
make clean

Working with Specific Components

Go Services:

cd apps/api-server
go run main.go

Rust Components:

cd apps/charging-engine
cargo run --release

TypeScript Dashboard:

cd apps/web-dashboard
pnpm dev

Documentation

Testing

# Unit tests
make test

# Go tests
go test ./apps/...

# Rust tests
cargo test --workspace

# TypeScript tests
pnpm -r test

Deployment

# Start with API Gateway
./scripts/start-gateway.sh

# Or manually
docker-compose up -d

Docker (Legacy)

make docker-build
docker-compose up -d

Kubernetes

kubectl apply -f deployments/kubernetes/

API Gateway Configuration

The API Gateway provides:

  • Unified Endpoint: https://api.telecom.com
  • Rate Limiting: Per-service rate limits
  • SSL Termination: Automatic HTTPS
  • Authentication: JWT validation
  • Monitoring: Real-time metrics dashboard

For detailed setup, see Gateway Quickstart Guide

Environment Variables

Create .env files in each service directory:

API Server (apps/api-server/.env):

MONGODB_URI=mongodb://localhost:27017/free5gc
REDIS_URI=redis://localhost:6379
API_PORT=8000
JWT_SECRET=your-secret-key

Charging Engine (apps/charging-engine/.env):

REDIS_URI=redis://localhost:6379
SERVER_PORT=8080

Web Dashboard (apps/web-dashboard/.env.local):

NEXT_PUBLIC_API_URL=http://localhost:8000

📖 Key Resources

Contributing

  1. Fork the repository
  2. Create a feature branch (git checkout -b feature/amazing-feature)
  3. Commit your changes (git commit -m 'Add amazing feature')
  4. Push to the branch (git push origin feature/amazing-feature)
  5. Open a Pull Request

License

This project is licensed under the MIT License - see the LICENSE file for details.

Support

Acknowledgments

  • free5GC Team: For the open-source 5G core implementation
  • Aya Community: For the pure-Rust eBPF framework
  • GSMA: For standardizing eSIM technology
  • Go Team: For the amazing Go 1.26 release
  • Rust Team: For continuous language improvements
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