Wrote a script to autofix issues with themes, applied this on the hailhydrant theme

scripts/fixTheme.ts

@@ -0,0 +1,63 @@
+
+/*
+ * This script attempt to automatically fix some basic issues when a theme from the custom generator is loaded
+ */
+import {Utils} from "../Utils"
+Utils.runningFromConsole = true;
+import {readFileSync, writeFileSync} from "fs";
+import {LayoutConfigJson} from "../Customizations/JSON/LayoutConfigJson";
+import {Layer} from "leaflet";
+import LayerConfig from "../Customizations/JSON/LayerConfig";
+import SmallLicense from "../Models/smallLicense";
+
+if(process.argv.length == 2){
+    console.log("USAGE: ts-node scripts/fixTheme <path to theme>")
+    throw "No path specified"
+}
+
+const path = process.argv[2]
+console.log("Fixing up ", path)
+
+const themeConfigJson : LayoutConfigJson = JSON.parse(readFileSync(path, "UTF8"))
+
+const linuxHints = []
+const licenses : SmallLicense[] = []
+
+const replacements: {source: string, destination: string}[] = []
+
+for (const layerConfigJson of themeConfigJson.layers) {
+    if(typeof (layerConfigJson) === "string"){
+        continue;
+    }
+    if(layerConfigJson["overpassTags"] !== undefined){
+        const tags = layerConfigJson["overpassTags"];
+        layerConfigJson["overpassTags"] = undefined;
+        layerConfigJson["source"] = { osmTags : tags}
+    }
+    // @ts-ignore
+    const layerConfig = new LayerConfig(layerConfigJson, true)
+    const images : string[] = Array.from(layerConfig.ExtractImages())
+    const remoteImages = images.filter(img => img.startsWith("http"))
+    for (const remoteImage of remoteImages) {
+        linuxHints.push("wget " + remoteImage)
+        const imgPath = remoteImage.substring(remoteImage.lastIndexOf("/") + 1)
+        licenses.push({
+            path: imgPath,
+            license: "",
+            authors: [],
+            sources: [remoteImage]
+        })
+        replacements.push({source: remoteImage, destination: imgPath})
+    }
+}
+
+let fixedThemeJson = JSON.stringify(themeConfigJson, null , "  ")
+for (const replacement of replacements) {
+    fixedThemeJson = fixedThemeJson.replace(new RegExp(replacement.source, "g"), replacement.destination)
+}
+
+const dir = path.substring(0, path.lastIndexOf("/"))
+writeFileSync(dir + "/generated.license_info.json", JSON.stringify(licenses, null, "  "))
+writeFileSync(dir  + "/fix_script_"+path.replace(/\//g,"_")+".sh", linuxHints.join("\n"))
+writeFileSync(path+".autofixed.json", fixedThemeJson)
+