48 lines
1.7 KiB
TypeScript
48 lines
1.7 KiB
TypeScript
import { IApplication } from './IApplication';
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import { ICategoryCollection } from './ICategoryCollection';
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import { IProjectInformation } from './IProjectInformation';
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import { OperatingSystem } from './OperatingSystem';
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export class Application implements IApplication {
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constructor(public info: IProjectInformation, public collections: readonly ICategoryCollection[]) {
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validateInformation(info);
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validateCollections(collections);
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}
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public getSupportedOsList(): OperatingSystem[] {
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return this.collections.map((collection) => collection.os);
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}
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public getCollection(operatingSystem: OperatingSystem): ICategoryCollection | undefined {
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return this.collections.find((collection) => collection.os === operatingSystem);
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}
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}
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function validateInformation(info: IProjectInformation) {
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if (!info) {
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throw new Error('undefined project information');
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}
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}
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function validateCollections(collections: readonly ICategoryCollection[]) {
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if (!collections) {
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throw new Error('undefined collections');
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}
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if (collections.length === 0) {
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throw new Error('no collection in the list');
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}
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if (collections.filter((c) => !c).length > 0) {
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throw new Error('undefined collection in the list');
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}
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const osList = collections.map((c) => c.os);
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const duplicates = getDuplicates(osList);
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if (duplicates.length > 0) {
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throw new Error('multiple collections with same os: ' +
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duplicates.map((os) => OperatingSystem[os].toLowerCase()).join('", "'));
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}
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}
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function getDuplicates(list: readonly OperatingSystem[]): OperatingSystem[] {
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return list.filter((os, index) => list.indexOf(os) !== index);
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}
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