edr-platform/apps/edr-freight-api/src/modules/rule-engine/entities/surcharge.entity.ts

import { BaseEntity } from '@edr/api-common';
import { Freight } from '@edr/types';
import { Column, Entity, Index, JoinColumn, ManyToOne, OneToMany } from 'typeorm';
import { SurchargeType } from './surcharge-type.entity';
import { WeightLimitRule } from './weight-limit-rule.entity';

@Entity({ schema: 'freight', name: 'surcharges' })
@Index(['surchargeTypeId'])
@Index(['isActive'])
export class Surcharge extends BaseEntity {
  @Column({ name: 'surcharge_type_id', type: 'uuid' })
  surchargeTypeId!: string;

  @ManyToOne(() => SurchargeType, (st) => st.surcharges)
  @JoinColumn({ name: 'surcharge_type_id' })
  surchargeType!: SurchargeType;

  @Column({ name: 'fee_name', type: 'varchar', length: 255 })
  feeName!: string;

  @Column({ name: 'trigger_description', type: 'text', nullable: true })
  triggerDescription?: string | null;

  @Column({
    name: 'calculation_method',
    type: 'enum',
    enum: Freight.CalculationMethod,
    default: Freight.CalculationMethod.PER_TON,
  })
  calculationMethod!: Freight.CalculationMethod;

  @Column({ name: 'rate', type: 'numeric', precision: 10, scale: 2 })
  rate!: number;

  @Column({ name: 'currency', type: 'char', length: 3, default: 'USD' })
  currency!: string;

  @Column({ name: 'apply_to_rail', type: 'boolean', default: false })
  applyToRail!: boolean;

  @Column({ name: 'apply_to_first_mile', type: 'boolean', default: false })
  applyToFirstMile!: boolean;

  @Column({ name: 'apply_to_last_mile', type: 'boolean', default: false })
  applyToLastMile!: boolean;

  @Column({ name: 'is_active', type: 'boolean', default: true })
  isActive!: boolean;

  @OneToMany(() => WeightLimitRule, (rule) => rule.surcharge)
  weightLimitRules?: WeightLimitRule[];
}