Bucketize some graphs

README.md

@@ -24,7 +24,7 @@ To do:
 ------
 Add jest
 test / come up with paths for loading state, error state and crit vs non-crit errors in useGet
-
+Add lOC per language over time
 I want to decide from the creation of the graph data whether to coalesce the data or not
 I want to have the axes on the graphs on the front-end be filled from some lib data structure
 I want to decide what type of graph to use based on the analysis type. Decide on colors to use based on the analysis type too

src/lib/analyses.spec.ts

@@ -1,4 +1,25 @@
-import { toCoalescedCounts } from "./analyses";
+import { toCoalescedCounts, toMonthlyBucketedCounts } from "./analyses";
+
+describe("toMonthlyBucketedCounts", () => {
+  it("adds counts for a given month", () => {
+    const counts = [
+      { date: "2024-01-01", count: 41 },
+      { date: "2024-01-02", count: 1 },
+    ];
+    const monthlyCounts = toMonthlyBucketedCounts(counts);
+    expect(monthlyCounts[0].count).toEqual(42);
+  });
+
+  it("splits counts by month", () => {
+    const counts = [
+      { date: "2024-01-01", count: 41 },
+      { date: "2024-02-02", count: 1 },
+    ];
+    const monthlyCounts = toMonthlyBucketedCounts(counts);
+    expect(monthlyCounts[0].count).toEqual(41);
+    expect(monthlyCounts[1].count).toEqual(1);
+  });
+});
 
 describe("toCoalescedCounts", () => {
   it("adds counts of previous day to the next day in same month", () => {

src/lib/analyses.ts

@@ -12,13 +12,13 @@ export const Graphs: Record<AnalysisEnum, { transform: (counts: Counts) => Count
     transform: toCoalescedCounts,
   },
   [AnalysisEnum.LOCChanged]: {
-    transform: (counts: Counts) => counts,
+    transform: toMonthlyBucketedCounts,
   },
   [AnalysisEnum.LOCAdded]: {
-    transform: (counts: Counts) => counts,
+    transform: toMonthlyBucketedCounts,
   },
   [AnalysisEnum.LOCRemoved]: {
-    transform: (counts: Counts) => counts,
+    transform: toMonthlyBucketedCounts,
   },
 };
 
@@ -41,6 +41,27 @@ function buildZeroedMonths(currentDate: string, nextDate: string, size: number)
   return zeroedMonths;
 }
 
+export function toMonthlyBucketedCounts(counts: Counts) {
+  return counts.reduce<Counts>((bucketedCounts, count) => {
+    count.date = day(count.date).startOf("month").format("YYYY-MM");
+
+    const [theBucketedCounts, lastCount] = [
+      bucketedCounts.slice(0, bucketedCounts.length - 1),
+      bucketedCounts.slice(bucketedCounts.length - 1)[0],
+    ];
+
+    if (lastCount === undefined) {
+      return [count];
+    }
+    lastCount.date = day(lastCount.date).startOf("month").format("YYYY-MM");
+
+    if (lastCount.date === count.date) {
+      return [...theBucketedCounts, { ...count, count: count.count + lastCount.count }];
+    }
+    return [...theBucketedCounts, lastCount, count];
+  }, []);
+}
+
 export function toCoalescedCounts(counts: Counts) {
   return counts.reduce<Counts>((coalescedCounts, count) => {
     const lastCount = coalescedCounts[coalescedCounts.length - 1];