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ce3ef15e7c
Intercity cargo is loaded at its origin yard and unloaded at its destination, but
only some yards have the equipment. EDR's facilities are Indode, Sebeta, Modjo,
Adama and Dire Dawa — and the set grows, so it has to be data.
- yards.has_facility marks a yard as a load/unload point; the new yard_facilities
record says what it can do. Only Indode stores cargo (has_warehouse), so only it
accrues storage/demurrage — the rest just move cargo on and off the train.
- facility_handling_events records each load/unload and carries its GRN.
warehouse_inventory cannot: its warehouse/yard/zone are NOT NULL, so a facility
without a warehouse could never have a row. inventory_id links to the storage
record when there is one.
- YardFacilitiesService.facilityForYard is the single resolver the handling flows
share, so they cannot drift on what a facility is.
- The seeder flags EXISTING yards and creates none. The codes are historical and
do not read like the facility names — Indode is KALITY ("Gelan Multi Purpose
Port (Indode)") and Sebeta is LEGACY_DEST — so it maps by code. Creating fresh
INDODE/SEBETA yards would have split data that routes and bookings already
reference.
Negad is deliberately absent: NAGAD ("DCT/SGDT") is in Djibouti while
NEGAD_FY_BCC is in Ethiopia and inactive, and which one is the intercity facility
is unsettled.
No behaviour change yet — nothing reads has_facility until the gate lands.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
86 lines
3.8 KiB
TypeScript
86 lines
3.8 KiB
TypeScript
import { MigrationInterface, QueryRunner } from 'typeorm';
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/**
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* Intercity (DOMESTIC) cargo is loaded at its origin yard and unloaded at its
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* destination yard, but only some yards have the equipment to do it. EDR's
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* load/unload facilities are Indode, Sebeta, Modjo, Adama, Dire Dawa and Negad —
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* and the set grows, so it must be data, not a constant.
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*
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* `yards.has_facility` marks a yard as a load/unload point; `yard_facilities`
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* holds what that facility can do. Only a facility with `has_warehouse` (Indode
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* today) stores cargo, and therefore accrues storage/demurrage — the rest just
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* move it on and off the train.
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*
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* `facility_handling_events` records each load/unload and carries its GRN.
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* warehouse_inventory can't do that job: its warehouse/yard/zone are NOT NULL, so
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* a facility with no warehouse could never have a row. `inventory_id` links to the
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* storage record when the facility does have a warehouse.
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*/
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export class YardFacilities2290000000000 implements MigrationInterface {
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name = 'YardFacilities2290000000000';
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public async up(queryRunner: QueryRunner): Promise<void> {
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await queryRunner.query(`
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ALTER TABLE freight.yards
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ADD COLUMN IF NOT EXISTS has_facility boolean NOT NULL DEFAULT false
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`);
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await queryRunner.query(`
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CREATE TABLE IF NOT EXISTS freight.yard_facilities (
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id uuid PRIMARY KEY DEFAULT gen_random_uuid(),
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yard_id uuid NOT NULL REFERENCES freight.yards(id) ON DELETE CASCADE,
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has_warehouse boolean NOT NULL DEFAULT false,
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equipment_notes text NULL,
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is_active boolean NOT NULL DEFAULT true,
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created_at timestamptz NOT NULL DEFAULT now(),
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updated_at timestamptz NOT NULL DEFAULT now(),
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deleted_at timestamptz NULL
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)
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`);
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// One facility record per yard.
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await queryRunner.query(`
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CREATE UNIQUE INDEX IF NOT EXISTS "UQ_yard_facility_yard"
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ON freight.yard_facilities (yard_id) WHERE deleted_at IS NULL
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`);
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await queryRunner.query(`
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CREATE TABLE IF NOT EXISTS freight.facility_handling_events (
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id uuid PRIMARY KEY DEFAULT gen_random_uuid(),
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booking_id uuid NOT NULL REFERENCES freight.bookings(id),
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yard_id uuid NOT NULL REFERENCES freight.yards(id),
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train_schedule_id uuid NULL REFERENCES freight.train_schedules(id),
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event_type varchar(10) NOT NULL,
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grn_number varchar(60) NULL,
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quantity numeric(14, 3) NULL,
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weight_tons numeric(14, 3) NULL,
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inventory_id uuid NULL REFERENCES freight.warehouse_inventory(id),
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performed_by varchar(120) NULL,
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occurred_at timestamptz NOT NULL DEFAULT now(),
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created_at timestamptz NOT NULL DEFAULT now(),
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updated_at timestamptz NOT NULL DEFAULT now(),
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deleted_at timestamptz NULL
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)
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`);
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await queryRunner.query(`
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CREATE INDEX IF NOT EXISTS "IDX_facility_handling_events_booking"
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ON freight.facility_handling_events (booking_id)
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`);
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await queryRunner.query(`
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CREATE INDEX IF NOT EXISTS "IDX_facility_handling_events_yard"
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ON freight.facility_handling_events (yard_id)
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`);
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await queryRunner.query(`
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CREATE INDEX IF NOT EXISTS "IDX_facility_handling_events_grn"
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ON freight.facility_handling_events (grn_number) WHERE grn_number IS NOT NULL
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`);
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}
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public async down(queryRunner: QueryRunner): Promise<void> {
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await queryRunner.query(`DROP TABLE IF EXISTS freight.facility_handling_events`);
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await queryRunner.query(`DROP TABLE IF EXISTS freight.yard_facilities`);
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await queryRunner.query(`
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ALTER TABLE freight.yards DROP COLUMN IF EXISTS has_facility
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`);
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}
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}
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