From bde4a2f75c1a2adf58a9222b04cc738c8c6b8966 Mon Sep 17 00:00:00 2001
From: Brandon Liu <bdon@bdon.org>
Date: Wed, 20 Jul 2022 13:07:16 +0800
Subject: [PATCH] cloudflare worker: gzip compression support

---
 serverless/cloudflare/worker.ts | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/serverless/cloudflare/worker.ts b/serverless/cloudflare/worker.ts
index 3eb2b1f..532082c 100644
--- a/serverless/cloudflare/worker.ts
+++ b/serverless/cloudflare/worker.ts
@@ -98,6 +98,7 @@ export default {
       let source = new TempSource();
 
       let p = new PMTiles(source);
+      let metadata = await p.metadata();
       let entry = await p.getZxy(+match[2], +match[3], +match[4]);
       if (entry) {
         let tile = await env.BUCKET.get(match![1] + ".pmtiles", {
@@ -108,9 +109,15 @@ export default {
         headers.set("Access-Control-Allow-Origin", "*");
         headers.set("Content-Type", "application/x-protobuf");
         headers.set("X-Pmap-Subrequests", subrequests.toString());
+
+        if (metadata.compression === "gzip") {
+          headers.set("Content-Encoding", "gzip");
+        }
+
         return new Response((tile as R2ObjectBody).body, {
           headers: headers,
-        });
+          encodeBody: "manual",
+        } as any);
       }
     }
     return new Response("Not Found");