From 32091d9de9bf1b20d6b8fbf81025903a740fbc93 Mon Sep 17 00:00:00 2001
From: cyan <cyjan@mrcyjanek.net>
Date: Thu, 11 Jun 2026 23:16:48 +0200
Subject: [PATCH] feat: randomize icon based on branch (thx :konsti:) (#3328)

---
 .github/workflows/reusable-build.yml |  1 +
 scripts/android/app_icon.sh          | 20 ++++++-
 scripts/branch_icon.sh               | 88 ++++++++++++++++++++++++++++
 3 files changed, 107 insertions(+), 2 deletions(-)
 create mode 100755 scripts/branch_icon.sh

diff --git a/.github/workflows/reusable-build.yml b/.github/workflows/reusable-build.yml
index acc209e4e..5d475c71a 100644
--- a/.github/workflows/reusable-build.yml
+++ b/.github/workflows/reusable-build.yml
@@ -115,6 +115,7 @@ jobs:
         run: |
           pushd scripts/android
             source ./app_env.sh cakewallet
+            export GITHUB_HUH=yeah
             ./app_config.sh
           popd
 
diff --git a/scripts/android/app_icon.sh b/scripts/android/app_icon.sh
index 9d7be355a..c8af25c75 100755
--- a/scripts/android/app_icon.sh
+++ b/scripts/android/app_icon.sh
@@ -12,6 +12,9 @@ ANDROID_ICON_DEST_PATH=$ANDROID_ICON_DIR/ic_launcher.png
 ANDROID_ICON_SET=""
 ANDROID_ICON_SET_DEST_PATH=`pwd`/../../android/app/src/main/res
 
+CAKE_ROOT=`pwd`/../../
+BRANCH_NAME=${BRANCH_NAME:-$(git rev-parse --abbrev-ref HEAD)}
+
 case $APP_ANDROID_TYPE in
 	"monero.com")
 		APP_LOGO=$ASSETS_DIR/images/monero.com_logo.png
@@ -27,6 +30,19 @@ esac
 
 rm $APP_LOGO_DEST_PATH
 rm $ANDROID_ICON_DEST_PATH
-ln -s $APP_LOGO $APP_LOGO_DEST_PATH
-ln -s $ANDROID_ICON $ANDROID_ICON_DEST_PATH
+cp -a $APP_LOGO $APP_LOGO_DEST_PATH
+cp -a $ANDROID_ICON $ANDROID_ICON_DEST_PATH
 cp -a $ANDROID_ICON_SET/. $ANDROID_ICON_SET_DEST_PATH/
+
+set -x
+if [[ $GITHUB_HUH == "yeah" ]]; then
+	pwd
+	for file in $(find $CAKE_ROOT/android/app/src/main/res -name "*.png") $APP_LOGO $CAKEWALLET_PATH $ASSETS_DIR/images/cakewallet_logo.png $ASSETS_DIR/images/cakewallet_icon_*.png $(find $CAKEWALLET_ICON_SET_PATH -name "*.png"); do
+		git checkout HEAD -- $file &> /dev/null
+		bash $CAKE_ROOT/scripts/branch_icon.sh ${BRANCH_NAME}-asd $file &> /dev/null
+	done
+fi
+set +x
+
+
+
diff --git a/scripts/branch_icon.sh b/scripts/branch_icon.sh
new file mode 100755
index 000000000..00d72b833
--- /dev/null
+++ b/scripts/branch_icon.sh
@@ -0,0 +1,88 @@
+#!/usr/bin/env bash
+
+set -euo pipefail
+
+INPUT_STRING="${1:?Usage: $0 <seed_string> <result.png>}"
+OUTPUT="${2:?Usage: $0 <seed_string> <result.png>}"
+
+if [[ ! -f "$OUTPUT" ]]; then
+  echo "Error: '$OUTPUT' not found." >&2
+  exit 1
+fi
+
+read -r IMG_W IMG_H < <(
+  ffprobe -v error \
+    -select_streams v:0 \
+    -show_entries stream=width,height \
+    -of csv=p=0 \
+    "$OUTPUT" | tr ',' ' '
+)
+
+if [[ -z "$IMG_W" || -z "$IMG_H" ]]; then
+  echo "Error: could not read dimensions from '$OUTPUT'." >&2
+  exit 1
+fi
+
+HASH=$(printf '%s' "$INPUT_STRING" | sha256sum | awk '{print $1}')
+
+chunk1=$(( 16#${HASH:0:8}  ))
+chunk2=$(( 16#${HASH:8:8}  ))
+chunk3=$(( 16#${HASH:16:8} ))
+chunk4=$(( 16#${HASH:24:8} ))
+
+R=$(( chunk1 % 256 ))
+G=$(( chunk2 % 256 ))
+B=$(( chunk3 % 256 ))
+
+ROTATION=$(( chunk4 % 360 ))
+
+R2=$(( (chunk1 / 256) % 256 ))
+G2=$(( (chunk2 / 256) % 256 ))
+B2=$(( (chunk3 / 256) % 256 ))
+
+STRLEN=${#INPUT_STRING}
+TILE_SIZE=$(( 64 + (STRLEN % 192) ))
+
+GEQ_R="between(mod((X+Y),${TILE_SIZE}),0,$(( TILE_SIZE / 2 )))*${R}  + between(mod((X+Y),${TILE_SIZE}),$(( TILE_SIZE / 2 + 1 )),${TILE_SIZE})*${R2}"
+GEQ_G="between(mod((X+Y),${TILE_SIZE}),0,$(( TILE_SIZE / 2 )))*${G}  + between(mod((X+Y),${TILE_SIZE}),$(( TILE_SIZE / 2 + 1 )),${TILE_SIZE})*${G2}"
+GEQ_B="between(mod((X+Y),${TILE_SIZE}),0,$(( TILE_SIZE / 2 )))*${B}  + between(mod((X+Y),${TILE_SIZE}),$(( TILE_SIZE / 2 + 1 )),${TILE_SIZE})*${B2}"
+
+ROTATION_RAD=$(awk "BEGIN { printf \"%.6f\", ${ROTATION} * 3.14159265358979 / 180 }")
+
+TMPFILE=$(mktemp "${OUTPUT}.tmp.XXXXXX.png")
+trap 'rm -f "$TMPFILE"' EXIT
+
+ffmpeg -y \
+  -f lavfi -i "nullsrc=size=${IMG_W}x${IMG_H}:rate=1" \
+  -i "$OUTPUT" \
+  -filter_complex "
+    [0:v]geq=
+      r='${GEQ_R}':
+      g='${GEQ_G}':
+      b='${GEQ_B}':
+      a=255,
+    format=rgba[bg];
+
+    [1:v]format=rgba,
+    geq=
+      r='r(X,Y)':
+      g='g(X,Y)':
+      b='b(X,Y)':
+      a='if(gte(r(X,Y)+g(X,Y)+b(X,Y),720),0,if(lte(r(X,Y)+g(X,Y)+b(X,Y),15)*gte(alpha(X,Y),250),0,alpha(X,Y)))',
+    rotate=
+      angle=${ROTATION_RAD}:
+      fillcolor=none:
+      ow=rotw(${ROTATION_RAD}):
+      oh=roth(${ROTATION_RAD})[ovr];
+
+    [bg][ovr]overlay=
+      x=(W-w)/2:
+      y=(H-h)/2:
+      format=auto[out]
+  " \
+  -map "[out]" \
+  -frames:v 1 \
+  -update 1 \
+  "$TMPFILE"
+
+mv "$TMPFILE" "$OUTPUT"
\ No newline at end of file