Add greenboxEntryCount to json for greenbox api requests

This will be necessary for the web side to be able to offer permalink to current greenbox
when browsing without entry number provided, or to know not to offer next greenbox entry
when browsing with a number specified

src/server.ts

@@ -34,9 +34,14 @@ app
         .status(StatusCodes.NOT_FOUND)
         .json({ error: "No greenbox data found" });
 
+    const greenboxEntryCount = await prisma.greenbox.count({
+      where: { playerId },
+    });
+
     return res.status(StatusCodes.OK).json({
       greenboxString: latestGreenbox.data,
       greenboxLastUpdate: latestGreenbox.time,
+      greenboxEntryCount,
     });
   })
   .get("/api/greenboxhistory/:playerId/:greenboxNumber", async (req, res) => {
@@ -53,6 +58,20 @@ app
         .status(StatusCodes.BAD_REQUEST)
         .json({ error: "greenboxNumber is invalid" });
 
+    const greenboxEntryCount = await prisma.greenbox.count({
+      where: { playerId },
+    });
+
+    if (greenboxEntryCount === 0)
+      return res.status(StatusCodes.NOT_FOUND).json({
+        error: `asked for greenbox number ${greenboxNumber}, but player ${playerId} has no greenbox data`,
+      });
+
+    if (greenboxEntryCount < greenboxNumber)
+      return res.status(StatusCodes.NOT_FOUND).json({
+        error: `asked for greenbox number ${greenboxNumber}, but player ${playerId} only has ${greenboxEntryCount} greenbox updates`,
+      });
+
     const greenboxEntry = await prisma.greenbox.findFirst({
       where: { playerId },
       orderBy: { id: "asc" },
@@ -72,6 +91,7 @@ app
     return res.status(StatusCodes.OK).json({
       greenboxString: greenboxEntry.data,
       greenboxLastUpdate: greenboxEntry.time,
+      greenboxEntryCount,
     });
   })
   .get("/webhooks/subsrolling", async (req, res) => {