getting items by EAN-13
parent
d16f474421
commit
35fd9c903d
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@ -21,6 +21,10 @@ export class EANService {
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}
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toID(ean: string) {
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if (ean.length === 12) {
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// it already is an ID
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return ean;
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}
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if (!this.isValid(ean)) {
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throw new Error(`Invalid EAN: "${ean}"`);
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}
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@ -4,7 +4,7 @@ import { Field, ID, ObjectType } from '@nestjs/graphql';
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description: 'Either the inventored thing or a box containing them',
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})
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export class ItemModel {
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@Field((type) => ID)
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@Field((type) => ID, { description: 'Database ID or EAN-13 code' })
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id: string;
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@Field()
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@ -2,6 +2,7 @@ import { Injectable } from '@nestjs/common';
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import { InjectEntityManager, InjectRepository } from '@nestjs/typeorm';
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import { EntityManager, Repository, TreeRepository } from 'typeorm';
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import { NewItemInput } from './dto/new-item.input';
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import { EANService } from './ean/ean.service';
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import { Item } from './items.entity';
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import { ItemModel } from './items.model';
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@ -12,26 +13,33 @@ export class ItemsService {
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private itemRepository: Repository<Item>,
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@InjectEntityManager()
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private entityManager: EntityManager,
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private eans: EANService,
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) {
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this.treeRepository = this.entityManager.getTreeRepository(Item);
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}
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treeRepository: TreeRepository<Item>;
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async getItem(id: string): Promise<Item | undefined> {
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return this.itemRepository.findOne(id);
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return this.itemRepository.findOne(this.eans.toID(id));
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}
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async getItemParent(item: ItemModel): Promise<Item | undefined> {
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const childItem = await this.itemRepository.findOneOrFail(item.id, {
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relations: ['parent'],
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});
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const childItem = await this.itemRepository.findOneOrFail(
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this.eans.toID(item.id),
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{
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relations: ['parent'],
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},
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);
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return childItem.parent;
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}
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async getItemAncestors(item: ItemModel): Promise<Item[]> {
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const childItem = await this.itemRepository.findOneOrFail(item.id, {
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relations: ['parent'],
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});
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const childItem = await this.itemRepository.findOneOrFail(
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this.eans.toID(item.id),
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{
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relations: ['parent'],
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},
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);
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// TreeRepository.findAncestors()[0] is always the child item
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return (await this.treeRepository.findAncestors(childItem)).slice(1);
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}
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@ -39,15 +47,18 @@ export class ItemsService {
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async getItemChildren(item: ItemModel): Promise<Item[]> {
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return this.itemRepository.find({
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where: {
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parent: item.id,
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parent: this.eans.toID(item.id),
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},
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});
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}
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async getItemDescendants(item: ItemModel): Promise<Item[]> {
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const parentItem = await this.itemRepository.findOneOrFail(item.id, {
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relations: ['parent'],
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});
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const parentItem = await this.itemRepository.findOneOrFail(
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this.eans.toID(item.id),
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{
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relations: ['parent'],
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},
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);
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// TreeRepository.findDescendants()[0] is always the parent item
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return (await this.treeRepository.findDescendants(parentItem)).slice(1);
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}
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@ -55,7 +66,10 @@ export class ItemsService {
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async createItem(input: NewItemInput): Promise<Item> {
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// must use Repository.save() for the closure table to work,
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// so we have to check whether the provided ID exists in the first place
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if (input.id && (await this.itemRepository.count({ id: input.id })) !== 0) {
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if (
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input.id &&
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(await this.itemRepository.count({ id: this.eans.toID(input.id) })) !== 0
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) {
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throw new Error('Item with this ID already exists');
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}
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@ -72,7 +86,10 @@ export class ItemsService {
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const item = this.itemRepository.create({
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...input,
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// if id not provided, use the highest one in db +1
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id: highestId ? (BigInt(highestId) + 1n).toString(10) : input.id,
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id: highestId
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? (BigInt(highestId) + 1n).toString(10)
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: // @ts-ignore input.id must exist here
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this.eans.toID(input.id),
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parent: input.parent
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? await this.itemRepository.findOneOrFail(input.parent)
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: undefined,
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