import {
  Entity,
  PrimaryGeneratedColumn,
  Column,
  CreateDateColumn,
  UpdateDateColumn,
  Index,
} from 'typeorm';

export enum ShippingRateStatus {
  ACTIVE = 'active',
  INACTIVE = 'inactive',
}

export enum ShippingCalculation {
  FLAT_RATE = 'flat_rate',
  BY_WEIGHT = 'by_weight',
  BY_PRICE = 'by_price',
  BY_QUANTITY = 'by_quantity',
  FREE = 'free',
  CARRIER_CALCULATED = 'carrier_calculated',
}

@Entity('shipping_rates', { schema: 'retail' })
@Index(['tenantId', 'status'])
@Index(['tenantId', 'code'], { unique: true })
export class ShippingRate {
  @PrimaryGeneratedColumn('uuid')
  id: string;

  @Column({ name: 'tenant_id', type: 'uuid' })
  @Index()
  tenantId: string;

  @Column({ length: 20, unique: true })
  code: string;

  @Column({ length: 100 })
  name: string;

  @Column({ type: 'text', nullable: true })
  description: string;

  @Column({
    type: 'enum',
    enum: ShippingRateStatus,
    default: ShippingRateStatus.ACTIVE,
  })
  status: ShippingRateStatus;

  @Column({
    name: 'calculation_type',
    type: 'enum',
    enum: ShippingCalculation,
    default: ShippingCalculation.FLAT_RATE,
  })
  calculationType: ShippingCalculation;

  // Flat rate
  @Column({ name: 'flat_rate', type: 'decimal', precision: 15, scale: 2, nullable: true })
  flatRate: number;

  // Weight-based rates
  @Column({ name: 'weight_rates', type: 'jsonb', nullable: true })
  weightRates: {
    minWeight: number;
    maxWeight: number;
    rate: number;
  }[];

  @Column({ name: 'weight_unit', length: 5, default: 'kg' })
  weightUnit: string;

  // Price-based rates
  @Column({ name: 'price_rates', type: 'jsonb', nullable: true })
  priceRates: {
    minPrice: number;
    maxPrice: number;
    rate: number;
  }[];

  // Quantity-based rates
  @Column({ name: 'quantity_rates', type: 'jsonb', nullable: true })
  quantityRates: {
    minQuantity: number;
    maxQuantity: number;
    rate: number;
  }[];

  // Free shipping threshold
  @Column({ name: 'free_shipping_threshold', type: 'decimal', precision: 15, scale: 2, nullable: true })
  freeShippingThreshold: number;

  // Carrier integration
  @Column({ name: 'carrier_code', length: 50, nullable: true })
  carrierCode: string;

  @Column({ name: 'carrier_name', length: 100, nullable: true })
  carrierName: string;

  @Column({ name: 'carrier_service', length: 50, nullable: true })
  carrierService: string;

  @Column({ name: 'carrier_api_config', type: 'jsonb', nullable: true })
  carrierApiConfig: Record<string, any>;

  // Delivery time
  @Column({ name: 'min_delivery_days', type: 'int', nullable: true })
  minDeliveryDays: number;

  @Column({ name: 'max_delivery_days', type: 'int', nullable: true })
  maxDeliveryDays: number;

  @Column({ name: 'delivery_message', length: 255, nullable: true })
  deliveryMessage: string;

  // Geographic restrictions
  @Column({ name: 'allowed_countries', type: 'jsonb', nullable: true })
  allowedCountries: string[];

  @Column({ name: 'allowed_states', type: 'jsonb', nullable: true })
  allowedStates: string[];

  @Column({ name: 'allowed_postal_codes', type: 'jsonb', nullable: true })
  allowedPostalCodes: string[];

  @Column({ name: 'excluded_postal_codes', type: 'jsonb', nullable: true })
  excludedPostalCodes: string[];

  // Product restrictions
  @Column({ name: 'excluded_categories', type: 'jsonb', nullable: true })
  excludedCategories: string[];

  @Column({ name: 'excluded_products', type: 'jsonb', nullable: true })
  excludedProducts: string[];

  // Weight/dimension limits
  @Column({ name: 'max_weight', type: 'decimal', precision: 10, scale: 4, nullable: true })
  maxWeight: number;

  @Column({ name: 'max_dimensions', type: 'jsonb', nullable: true })
  maxDimensions: {
    length: number;
    width: number;
    height: number;
    unit: string;
  };

  // Customer restrictions
  @Column({ name: 'customer_levels', type: 'jsonb', nullable: true })
  customerLevels: string[];

  // Tax
  @Column({ name: 'is_taxable', type: 'boolean', default: true })
  isTaxable: boolean;

  @Column({ name: 'tax_rate', type: 'decimal', precision: 5, scale: 4, nullable: true })
  taxRate: number;

  // Display
  @Column({ type: 'int', default: 0 })
  priority: number;

  @Column({ name: 'display_name', length: 100, nullable: true })
  displayName: string;

  @Column({ name: 'icon_url', length: 255, nullable: true })
  iconUrl: string;

  // Metadata
  @Column({ type: 'jsonb', nullable: true })
  metadata: Record<string, any>;

  @CreateDateColumn({ name: 'created_at' })
  createdAt: Date;

  @UpdateDateColumn({ name: 'updated_at' })
  updatedAt: Date;

  @Column({ name: 'created_by', type: 'uuid', nullable: true })
  createdBy: string;
}