cleanup

src/components/HistoryChart/HistoryChart.adapter.ts

@@ -0,0 +1,75 @@
+import { ReportData } from "../../features/report";
+import {
+  mergeBucketPeriods,
+  getAmount,
+  PeriodKey,
+} from "../report.helpers";
+import { ChartDataPoint } from "./HistoryChart.models";
+
+// ─── Tab → PeriodKey ─────────────────────────────────────────
+
+const TAB_TO_KEY: Record<string, PeriodKey> = {
+  Weekly: "weekly",
+  Monthly: "monthly",
+  Yearly: "yearly",
+  "Financial Year": "fyly",
+  "All Time": "full",
+};
+
+export function tabToKey(tab: string): PeriodKey {
+  return TAB_TO_KEY[tab] ?? "full";
+}
+
+// ─── Comparison ──────────────────────────────────────────────
+
+function attachComparison(
+  points: ChartDataPoint[],
+  key: PeriodKey
+): ChartDataPoint[] {
+  const getCompareIndex = (i: number) => {
+    if (key === "weekly") return i - 4;
+    if (key === "monthly") return i - 12;
+    if (key === "yearly") return i - 1;
+    if (key === "fyly") return i - 1;
+    return -1;
+  };
+
+  return points.map((p, i) => {
+    const ci = getCompareIndex(i);
+
+    return {
+      ...p,
+      compare:
+        ci >= 0 && points[ci]
+          ? {
+              id: points[ci].id,
+              label: points[ci].label,
+              amount: points[ci].amount,
+            }
+          : undefined,
+    };
+  });
+}
+
+// ─── Main adapter ────────────────────────────────────────────
+
+export function buildChartData(
+  reportData: ReportData,
+  key: PeriodKey,
+  mode: "expense" | "income",
+  comparison: boolean
+): ChartDataPoint[] {
+  const merged = mergeBucketPeriods(reportData.buckets, key);
+
+  let points: ChartDataPoint[] = merged.map((p) => ({
+    id: p.id,
+    label: p.label,
+    amount: getAmount(p, mode),
+  }));
+
+  if (comparison) {
+    points = attachComparison(points, key);
+  }
+
+  return points;
+}