mirror of
https://github.com/Tria-plc/edr-platform.git
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b926a3116e
- Added StationWorkControls to manage loading/unloading phases in TrainScheduleV2DetailPage. - Implemented API endpoints for recording station work and managing wagon detach requests. - Updated contract templates to include Ethiopian customs handling options. - Enhanced shipment forms to collect customs clearing agent details for without-customs bookings. - Introduced NUMBER_OF_WAGONS as a unit of measure for bulk cargo, allowing customers to specify wagon counts. - Improved validation for customs clearing agent information in shipment forms. - Updated various components and services to accommodate new features and ensure data integrity.
75 lines
3.1 KiB
TypeScript
75 lines
3.1 KiB
TypeScript
import { MigrationInterface, QueryRunner } from 'typeorm';
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/**
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* Approval gate for detaching a wagon (or sending it to maintenance) from a
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* train whose run is already SCHEDULED.
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*
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* Before scheduling, the consist is the builder's to edit. After scheduling,
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* pulling a wagon changes a departure customers booked against, so it becomes
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* a two-person action: one staffer files a request with a reason, another
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* staffer (with trains:approve_wagon_detach) approves it — approval executes
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* the detach on the spot. Rows are never deleted; decided rows are the audit
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* trail of who asked, who decided, and why.
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*
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* One PENDING row per (train, wagon) at a time — a second request while one is
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* undecided is a coordination failure, not a workflow (partial unique index).
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*/
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export class WagonDetachRequests3730000000000 implements MigrationInterface {
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name = 'WagonDetachRequests3730000000000';
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public async up(queryRunner: QueryRunner): Promise<void> {
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await queryRunner.query(`
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DO $$ BEGIN
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CREATE TYPE freight.wagon_detach_requests_status_enum
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AS ENUM ('PENDING', 'APPROVED', 'REJECTED');
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EXCEPTION WHEN duplicate_object THEN NULL; END $$
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`);
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await queryRunner.query(`
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CREATE TABLE IF NOT EXISTS freight.wagon_detach_requests (
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id uuid PRIMARY KEY DEFAULT uuid_generate_v4(),
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train_id uuid NOT NULL REFERENCES freight.trains (id),
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wagon_id uuid NOT NULL REFERENCES freight.wagons (id),
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-- Snapshot: the audit trail must still read correctly after the wagon
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-- is renumbered or deleted.
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wagon_number varchar(50) NOT NULL,
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action varchar(20) NOT NULL,
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reason varchar(500) NOT NULL,
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status freight.wagon_detach_requests_status_enum NOT NULL DEFAULT 'PENDING',
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-- Who asked and who decided. Both recorded: the point of the gate is
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-- that they are different people.
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requested_by uuid,
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decided_by uuid,
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decided_at timestamptz,
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decision_note varchar(500),
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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
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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_wagon_detach_requests_train
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ON freight.wagon_detach_requests (train_id)
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`);
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await queryRunner.query(`
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CREATE INDEX IF NOT EXISTS idx_wagon_detach_requests_train_status
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ON freight.wagon_detach_requests (train_id, status)
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`);
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// The workflow invariant, enforced where it cannot race: at most one
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// undecided request per wagon per train.
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await queryRunner.query(`
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CREATE UNIQUE INDEX IF NOT EXISTS uq_wagon_detach_requests_one_pending
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ON freight.wagon_detach_requests (train_id, wagon_id)
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WHERE status = 'PENDING' AND deleted_at IS 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.wagon_detach_requests`);
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await queryRunner.query(`DROP TYPE IF EXISTS freight.wagon_detach_requests_status_enum`);
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}
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}
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