Feat/stats api endpoint

package.json

@@ -34,6 +34,7 @@
     "@sentry/nextjs": "7.120.1",
     "@splidejs/react-splide": "^0.7.12",
     "clsx": "^2.1.1",
+    "date-fns": "^4.1.0",
     "html-to-image": "^1.11.11",
     "jspdf": "^2.5.2",
     "leaflet": "^1.9.4",

src/app/api/stats/route.ts

@@ -0,0 +1,71 @@
+import { NextRequest, NextResponse } from "next/server";
+import z from "zod";
+import { add } from "date-fns/add";
+import { startOfYear } from "date-fns/startOfYear";
+import { startOfMonth } from "date-fns/startOfMonth";
+import { startOfWeek } from "date-fns/startOfWeek";
+import { startOfDay } from "date-fns/startOfDay";
+import { getNorthStarStats } from "@/src/lib/prisma/prisma-analytics-queries";
+import { fr } from "date-fns/locale/fr";
+
+const StatsRouteSchema = z.object({
+  since: z
+    .number()
+    .positive()
+    .max(5000, { message: "Veuillez rentrer une valeur inférieure à 5000 pour le paramètre since" }),
+  periodicity: z.enum(["year", "month", "week", "day"]),
+});
+
+interface StatOutputRecord {
+  value: number;
+  date: Date;
+}
+
+type StatOutput = {
+  description?: string;
+  stats: StatOutputRecord[];
+};
+
+export async function GET(request: NextRequest) {
+  const parsedRequest = StatsRouteSchema.safeParse({
+    since: +(request.nextUrl.searchParams.get("since") ?? 0),
+    periodicity: request.nextUrl.searchParams.get("periodicity"),
+  });
+  if (!parsedRequest.success) {
+    const { errors } = parsedRequest.error;
+    return NextResponse.json({ error: { message: "Invalid request", errors } }, { status: 400 });
+  } else {
+    const { since: nbIntervals, periodicity } = parsedRequest.data;
+
+    const ranges = {
+      year: startOfYear,
+      month: startOfMonth,
+      week: (date: Date) => startOfWeek(date, { weekStartsOn: 1, locale: fr }),
+      day: startOfDay,
+    };
+
+    let dateBeginOfLastPeriod = new Date();
+    dateBeginOfLastPeriod = ranges[periodicity](new Date());
+    dateBeginOfLastPeriod = add(dateBeginOfLastPeriod, {
+      minutes: -dateBeginOfLastPeriod.getTimezoneOffset(),
+    });
+
+    const dateBeginOfFirstPeriod = add(dateBeginOfLastPeriod, {
+      ...(periodicity === "year" && { years: 1 - nbIntervals }),
+      ...(periodicity === "month" && { months: 1 - nbIntervals }),
+      ...(periodicity === "week" && { weeks: 1 - nbIntervals }),
+      ...(periodicity === "day" && { days: 1 - nbIntervals }),
+    });
+
+    const results = await getNorthStarStats({ dateFrom: dateBeginOfFirstPeriod, range: periodicity });
+
+    const sanitizeResults: StatOutput = {
+      stats: results.map((result) => ({
+        value: Number(result.score),
+        date: result.periode!,
+      })),
+    };
+
+    return NextResponse.json(sanitizeResults);
+  }
+}

src/helpers/dateUtils.ts

@@ -1,3 +1,5 @@
+export type DateRange = "day" | "week" | "month" | "year";
+
 export const FAR_FUTURE = new Date(3024, 0, 0, 1);
 
 export const removeDaysToDate = (date: Date, nbDays: number) => new Date(date.getTime() - nbDays * 24 * 60 * 60 * 1000);

src/lib/prisma/prisma-analytics-queries.ts

@@ -1,5 +1,8 @@
-import { Analytics } from "@prisma/client";
+/* eslint-disable max-len */
+
+import { Analytics, Prisma } from "@prisma/client";
 import { prismaClient } from "./prismaClient";
+import { DateRange } from "@/src/helpers/dateUtils";
 
 type AnalyticsProps = Omit<Analytics, "id" | "created_at" | "created_by">;
 
@@ -14,3 +17,39 @@ export const createAnalytic = async (analytics: AnalyticsProps): Promise<Analyti
     },
   });
 };
+
+type GetNorthStarStatsProps = {
+  dateFrom: Date;
+  range: DateRange;
+};
+
+export const getNorthStarStats = async (
+  params: GetNorthStarStatsProps,
+): Promise<{ periode: Date; score: number }[]> => {
+  return prismaClient.$queryRaw(
+    Prisma.sql`with score_table as (
+      select 
+        date_trunc(${params.range}, p.created_at) as date1,
+        count(distinct p.id) as score
+      from pfmv."projet" p
+      join pfmv."user_projet" up on p.id = up.projet_id
+      join pfmv."User" u on up.user_id = u.id
+      WHERE p.created_at >= ${params.dateFrom}
+        and p.deleted_at IS NULL
+        and u.email NOT LIKE '%@ademe.fr'
+        and u.email NOT LIKE '%@beta.gouv.fr'
+        and u.email != 'marie.racine@dihal.gouv.fr'
+      group by 1
+    ),
+    all_intervals as (
+      SELECT date_trunc(${params.range}, ts) as date1
+      FROM generate_series(${params.dateFrom}, now(), CONCAT('1 ', ${params.range})::interval) AS ts
+    )
+    select 
+      all_intervals.date1::timestamp::date as "periode",
+      coalesce(score, 0) as "score"
+    from score_table
+    right outer join all_intervals on all_intervals.date1 = score_table.date1
+    order by 1;`,
+  );
+};