server-ts: Port battribute

src/services/promoted_attribute_definition_parser.ts

@@ -0,0 +1,49 @@
+interface DefinitionObject {
+    isPromoted: boolean;
+    labelType: string;
+    multiplicity: string;
+    numberPrecision: number;
+    promotedAlias: string;
+    inverseRelation: string;
+}
+
+function parse(value: string): DefinitionObject {
+    const tokens = value.split(',').map(t => t.trim());
+    const defObj: Partial<DefinitionObject> = {};
+
+    for (const token of tokens) {
+        if (token === 'promoted') {
+            defObj.isPromoted = true;
+        }
+        else if (['text', 'number', 'boolean', 'date', 'datetime', 'url'].includes(token)) {
+            defObj.labelType = token;
+        }
+        else if (['single', 'multi'].includes(token)) {
+            defObj.multiplicity = token;
+        }
+        else if (token.startsWith('precision')) {
+            const chunks = token.split('=');
+
+            defObj.numberPrecision = parseInt(chunks[1]);
+        }
+        else if (token.startsWith('alias')) {
+            const chunks = token.split('=');
+
+            defObj.promotedAlias = chunks[1];
+        }
+        else if (token.startsWith('inverse')) {
+            const chunks = token.split('=');
+
+            defObj.inverseRelation = chunks[1].replace(/[^\p{L}\p{N}_:]/ug, "")
+        }
+        else {
+            console.log("Unrecognized attribute definition token:", token);
+        }
+    }
+
+    return defObj as DefinitionObject;
+}
+
+export = {
+    parse
+};