feat(api): add stats chart endpoint for admin access with time series data

feat(dayjs): integrate dayjs for date handling and formatting across the application
refactor(routes): update date handling in id-tags, transactions, users, and dashboard routes to use dayjs
style(globals): improve CSS variable definitions for better readability and consistency
deps: add dayjs as a dependency for date manipulation

apps/csms/src/routes/transactions.ts

@@ -1,5 +1,6 @@
 import { Hono } from "hono";
 import { and, desc, eq, isNull, isNotNull, sql } from "drizzle-orm";
+import dayjs from "dayjs";
 import { useDrizzle } from "@/lib/db.js";
 import { transaction, chargePoint, connector, idTag } from "@/db/schema.js";
 import { user } from "@/db/auth-schema.js";
@@ -206,7 +207,7 @@ app.post("/:id/stop", async (c) => {
   if (!row) return c.json({ error: "Not found" }, 404);
   if (row.transaction.stopTimestamp) return c.json({ error: "Transaction already stopped" }, 409);
 
-  const now = new Date();
+  const now = dayjs();
 
   // Try to send RemoteStopTransaction via OCPP if the charge point is online
   const ws = row.chargePointIdentifier ? ocppConnections.get(row.chargePointIdentifier) : null;
@@ -233,11 +234,11 @@ app.post("/:id/stop", async (c) => {
   const [updated] = await db
     .update(transaction)
     .set({
-      stopTimestamp: now,
+      stopTimestamp: now.toDate(),
       stopMeterValue,
       stopReason: "Remote",
       chargeAmount: feeFen,
-      updatedAt: now,
+      updatedAt: now.toDate(),
     })
     .where(eq(transaction.id, id))
     .returning();
@@ -247,7 +248,7 @@ app.post("/:id/stop", async (c) => {
       .update(idTag)
       .set({
         balance: sql`GREATEST(0, ${idTag.balance} - ${feeFen})`,
-        updatedAt: now,
+        updatedAt: now.toDate(),
       })
       .where(eq(idTag.idTag, row.transaction.idTag));
   }
@@ -278,7 +279,7 @@ app.delete("/:id", async (c) => {
   if (!row.transaction.stopTimestamp) {
     await db
       .update(connector)
-      .set({ status: "Available", updatedAt: new Date() })
+      .set({ status: "Available", updatedAt: dayjs().toDate() })
       .where(eq(connector.id, row.transaction.connectorId));
   }