89 lines
2.8 KiB
TypeScript
89 lines
2.8 KiB
TypeScript
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import {Utils} from "../../Utils";
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export interface WikidataResponse {
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id: string,
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labels: Map<string, string>,
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descriptions: Map<string, string>,
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claims: Map<string, Set<string>>,
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wikisites: Map<string, string>
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commons: string
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}
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/**
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* Utility functions around wikidata
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*/
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export default class Wikidata {
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private static ParseResponse(entity: any): WikidataResponse {
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const labels = new Map<string, string>()
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for (const labelName in entity.labels) {
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// The labelname is the language code
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labels.set(labelName, entity.labels[labelName].value)
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}
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const descr = new Map<string, string>()
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for (const labelName in entity.descriptions) {
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// The labelname is the language code
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descr.set(labelName, entity.descriptions[labelName].value)
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}
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const sitelinks = new Map<string, string>();
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for (const labelName in entity.sitelinks) {
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// labelName is `${language}wiki`
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const language = labelName.substring(0, labelName.length - 4)
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const title = entity.sitelinks[labelName].title
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sitelinks.set(language, title)
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}
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const commons = sitelinks.get("commons")
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sitelinks.delete("commons")
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const claims = new Map<string, Set<string>>();
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for (const claimId of entity.claims) {
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const claimsList: any[] = entity.claims[claimId]
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const values = new Set<string>()
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for (const claim of claimsList) {
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const value = claim.mainsnak.datavalue.value;
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values.add(value)
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}
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claims.set(claimId, values);
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}
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return {
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claims: claims,
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descriptions: descr,
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id: entity.id,
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labels: labels,
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wikisites: sitelinks,
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commons: commons
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}
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}
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/**
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* Loads a wikidata page
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* @returns the entity of the given value
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*/
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public static async LoadWikidataEntry(value: string | number): Promise<WikidataResponse> {
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const wikidataUrl = "https://www.wikidata.org/wiki/"
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if (typeof value === "number") {
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value = "Q" + value
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}
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if (value.startsWith(wikidataUrl)) {
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value = value.substring(wikidataUrl.length)
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}
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if (value.startsWith("http")) {
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// Probably some random link in the image field - we skip it
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return undefined
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}
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if (!value.startsWith("Q")) {
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value = "Q" + value
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}
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const url = "https://www.wikidata.org/wiki/Special:EntityData/" + value + ".json";
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const response = await Utils.downloadJson(url)
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return Wikidata.ParseResponse(response.entities[value]);
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}
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}
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