fix contrat,wagon allocation wehn a booking is split

apps/edr-freight-api/src/contracts/contract-article.util.ts

@@ -3,6 +3,10 @@ import Handlebars from 'handlebars';
 /** One numbered clause of a dynamic article, with optional nested bullets. */
 export interface RenderedClause {
   text: string;
+  /** Computed outline number, e.g. "3" or "2.1.4". */
+  number: string;
+  /** Nesting level: 1 = clause, 2 = sub-clause (x.y), 3 = x.y.z, … */
+  depth: number;
   bullets: string[];
 }
 
@@ -16,10 +20,26 @@ export interface RenderedArticle {
 }
 
 /**
- * Parse a template article body into clauses. Format: one clause per line;
- * lines prefixed with "- " become bullets nested under the preceding clause.
- * A body that reduces to a single clause without bullets renders as a plain
- * paragraph rather than a numbered list of one.
+ * Leading outline token on a clause line: "1.", "2)", "1.1", "1.1.1." …
+ * The token's segment count sets the clause depth; its digits are ignored —
+ * numbering is recomputed sequentially so stale numbers self-heal.
+ * A single-segment token requires its "."/")" ("10 tons…" is prose, "10. x"
+ * is clause ten); multi-segment tokens ("1.1") may omit it. A token may also
+ * end the line — that is an empty clause still being typed in the editor.
+ */
+const CLAUSE_NUMBER_RE = /^(?:(\d+(?:\.\d+)+)[.)]?|(\d+)[.)])(?:\s+|$)/;
+
+/** Deepest supported sub-clause level (1.1.1.1.1.1). */
+const MAX_CLAUSE_DEPTH = 6;
+
+/**
+ * Parse a template article body into clauses. Format: one clause per line.
+ * A leading outline number ("2. ", "2.1 ", "2.1.3 ") nests the line as a
+ * sub-clause at that depth — the typed digits are stripped and renumbered
+ * sequentially, so editing order never leaves stale numbers in the document.
+ * Lines prefixed with "- " become bullets nested under the preceding clause.
+ * A body that reduces to a single un-numbered clause without bullets renders
+ * as a plain paragraph rather than a numbered list of one.
  */
 export function parseArticleBody(body: string): Pick<RenderedArticle, 'paragraph' | 'clauses'> {
   const lines = (body ?? '')
@@ -28,20 +48,44 @@ export function parseArticleBody(body: string): Pick<RenderedArticle, 'paragraph
     .filter((line) => line.length > 0);
 
   const clauses: RenderedClause[] = [];
+  // counters[i] = current number at depth i+1; truncated when a shallower
+  // clause arrives so deeper numbering restarts at 1.
+  const counters: number[] = [];
+  let sawNumberToken = false;
+
   for (const line of lines) {
     if (line.startsWith('- ')) {
       const bullet = line.slice(2).trim();
       if (clauses.length === 0) {
-        clauses.push({ text: bullet, bullets: [] });
+        counters.splice(0, counters.length, 1);
+        clauses.push({ text: bullet, number: '1', depth: 1, bullets: [] });
       } else {
         clauses[clauses.length - 1].bullets.push(bullet);
       }
-    } else {
-      clauses.push({ text: line, bullets: [] });
+      continue;
     }
+
+    const match = CLAUSE_NUMBER_RE.exec(line);
+    const token = match ? (match[1] ?? match[2]) : null;
+    let depth = token ? Math.min(token.split('.').length, MAX_CLAUSE_DEPTH) : 1;
+    // A sub-clause can only sit directly under an existing parent — "1.1.1"
+    // typed as the first line clamps to whatever level is actually open.
+    depth = Math.min(depth, counters.length + 1);
+    if (match) sawNumberToken = true;
+
+    counters.splice(depth);
+    while (counters.length < depth) counters.push(0);
+    counters[depth - 1] += 1;
+
+    clauses.push({
+      text: match ? line.slice(match[0].length).trim() : line,
+      number: counters.slice(0, depth).join('.'),
+      depth,
+      bullets: [],
+    });
   }
 
-  if (clauses.length === 1 && clauses[0].bullets.length === 0) {
+  if (clauses.length === 1 && clauses[0].bullets.length === 0 && !sawNumberToken) {
     return { paragraph: clauses[0].text, clauses: [] };
   }
   return { clauses };