From f6f05525e30e11c7c1f323aeb7bed64201dbc9fc Mon Sep 17 00:00:00 2001
From: Sven Naumann <3747263+sVnsation@users.noreply.github.com>
Date: Wed, 30 Nov 2022 21:03:54 +0100
Subject: [PATCH] compress firmware bin with gzip for ota

allows smaller update files for ota update
---
 scripts/getVersion.py | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/scripts/getVersion.py b/scripts/getVersion.py
index 2346966d7..214064182 100644
--- a/scripts/getVersion.py
+++ b/scripts/getVersion.py
@@ -1,4 +1,6 @@
 import os
+import shutil
+import gzip
 from datetime import date
 
 def genOtaBin(path):
@@ -24,6 +26,11 @@ def genOtaBin(path):
     with open(path + "ota.bin", "wb") as f:
         f.write(bytearray(arr))
 
+# write gzip firmware file
+def gzip_bin(bin_file, gzip_file):
+    with open(bin_file,"rb") as fp:
+        with gzip.open(gzip_file, "wb", compresslevel = 9) as f:
+            shutil.copyfileobj(fp, f)
 
 def readVersion(path, infile):
     f = open(path + infile, "r")
@@ -48,16 +55,19 @@ def readVersion(path, infile):
     src = path + ".pio/build/esp8266-release/firmware.bin"
     dst = path + "firmware/" + versionout
     os.rename(src, dst)
+    gzip_bin(dst, dst + ".gz")
     
     versionout = version[:-1] + "_esp8266_1m_" + sha + ".bin"
     src = path + ".pio/build/esp8285-release/firmware.bin"
     dst = path + "firmware/" + versionout
     os.rename(src, dst)
+    gzip_bin(dst, dst + ".gz")
 
     versionout = version[:-1] + "_esp32_" + sha + ".bin"
     src = path + ".pio/build/esp32-wroom32-release/firmware.bin"
     dst = path + "firmware/" + versionout
     os.rename(src, dst)
+    gzip_bin(dst, dst + ".gz")
 
     # other ESP32 bin files
     src = path + ".pio/build/esp32-wroom32-release/"