Add language names to the language picker

scripts/fetchLanguages.ts

@@ -0,0 +1,85 @@
+/**
+ * Fetches all 'modern languages' from wikidata, then exports their names in every language
+ */
+
+import * as wds from "wikidata-sdk"
+import {Utils} from "../Utils";
+import ScriptUtils from "./ScriptUtils";
+import {existsSync, readFileSync, writeFileSync} from "fs";
+import * as knownLanguages from "../assets/generated/used_languages.json"
+
+async function fetch(target: string) {
+
+    ScriptUtils.fixUtils()
+    console.log("Fetching languages")
+
+    const sparql = 'SELECT ?lang ?label ?code \n' +
+        'WHERE \n' +
+        '{ \n' +
+        '  ?lang wdt:P31 wd:Q1288568. \n' + // language instanceOf (p31) modern language(Q1288568)
+        '  ?lang rdfs:label ?label. \n' +
+        '  ?lang wdt:P424 ?code' + // Wikimedia language code seems to be close to the weblate entries
+        '} ' 
+    const url = wds.sparqlQuery(sparql)
+
+// request the generated URL with your favorite HTTP request library
+    const result = await Utils.downloadJson(url, {"User-Agent": "MapComplete script"})
+    writeFileSync(target, JSON.stringify(result.results.bindings))
+    console.log("Written to "+target)
+}
+
+function extract(data){
+    console.log("Got "+data.length+" entries")
+    const perId = new Map<string, Map<string, string>>();
+    for (const element of data) {
+        //const id = element.lang.value.substring(prefixL)
+        const id = element.code.value
+        const labelLang = element.label["xml:lang"]
+        const value = element.label.value
+        if(!perId.has(id)){
+            perId.set(id, new Map<string, string>())
+        }
+        perId.get(id).set(labelLang, value)
+    }
+    console.log("Got "+perId.size+" languages")
+    return perId
+}
+
+function getNativeList(langs: Map<string, Map<string, string>>){
+    const native = {}
+    langs.forEach((translations, key ) =>{
+        native[key] = translations.get(key)
+    })
+    return native
+}
+
+function getTranslationsIn(targetLanguage: string, perId: Map<string, Map<string, string>>, whitelist = undefined){
+    const langs = {}
+    perId.forEach((translations, langCode) => {
+        if(whitelist !== undefined && whitelist.indexOf(langCode) < 0){
+            return
+        }
+        langs[langCode] = translations.get(targetLanguage)
+    })
+    return langs;
+}
+
+function main(wipeCache = false){
+    const cacheFile = "./assets/generated/languages-wd.json"
+    if(wipeCache || !existsSync(cacheFile)){
+       // await fetch(cacheFile);
+    }else{
+        console.log("Reusing the cached file")
+    }
+    const data = JSON.parse(readFileSync( cacheFile, "UTF8"))
+    const perId = extract(data)
+    const nativeList = getNativeList(perId)
+    writeFileSync("./assets/language_native.json", JSON.stringify(nativeList))
+    
+
+    writeFileSync("./assets/language_translations.json", 
+        JSON.stringify(Utils.MapToObj<Map<string, string>>(perId, value => Utils.MapToObj(value)), null, "  "))
+}
+
+
+main()//.then(() => console.log("Done!"))