- 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
- 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
- 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
- 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
- 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
- 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
- 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
- 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
- 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
- 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
- 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
- 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
- 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
- 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
- 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
- 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
- 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,
- 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
- 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
- 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)
- 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
- 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
- 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
- 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
- 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
- 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
- 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
- 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
- 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
* 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
- 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
- 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)