#!/bin/bash
# Build sunfish bootanimation.tar from two GIFs (loading + loaded finale).
# Lineage Android.mk prepends "W H FPS" and appends branding/bootanimation/desc.txt.
#
# Sequence (desc.txt):
#   part0 loading  — play once
#   part1 loaded   — play once (finale before bootanim waits on part2)
#   part2 hold     — loop last loaded frame until boot completes
#
# Output: vendor/sunfish-a16/branding/bootanimation/bootanimation.tar
set -euo pipefail

ROOT=$(cd "$(dirname "$0")/.." && pwd)
LOADING=${1:-/home/aventura/Downloads/AXP_OS_Resurrection_loading.gif}
LOADED=${2:-/home/aventura/Downloads/AXP_OS_Resurrection_loaded.gif}
OUT="$ROOT/artifacts/bootanimation-resurrection"
WORK="$OUT/work"
W=1080
H=2340
FPS=30

# Fill frame (no letterbox band); AXP_BOOTANIMATION_FULLSCREEN in branding.mk.
VF="scale=${W}:${H}:force_original_aspect_ratio=increase,crop=${W}:${H},format=rgb24"

rm -rf "$WORK"
mkdir -p "$WORK/part0" "$WORK/part1" "$WORK/part2"

ffmpeg -y -i "$LOADING" -vf "$VF" "$WORK/part0/%05d.png"
ffmpeg -y -i "$LOADED" -vf "$VF" "$WORK/part1/%05d.png"

LAST_LOADED=$(ls -1 "$WORK/part1"/*.png | sort | tail -1)
cp "$LAST_LOADED" "$WORK/part2/00001.png"

cat >"$ROOT/vendor/sunfish-a16/branding/bootanimation/desc.txt" <<'EOF'
c 1 0 part0
c 1 0 part1
c 0 0 part2
EOF
cp "$ROOT/vendor/sunfish-a16/branding/bootanimation/desc.txt" "$WORK/desc.txt"

rm -f "$OUT/bootanimation.zip"
(cd "$WORK" && zip -0 -q "$OUT/bootanimation.zip" desc.txt && zip -0 -q -r "$OUT/bootanimation.zip" part0 part1 part2)
unzip -t "$OUT/bootanimation.zip" >/dev/null

TAR="$ROOT/vendor/sunfish-a16/branding/bootanimation/bootanimation.tar"
(cd "$WORK" && tar cf "$TAR" part0 part1 part2)

n0=$(ls -1 "$WORK/part0" | wc -l)
n1=$(ls -1 "$WORK/part1" | wc -l)
identify "$WORK/part0/00001.png" "$WORK/part2/00001.png"
ls -lh "$OUT/bootanimation.zip" "$TAR"
echo "OK: rebacon (or mka bootanimation.zip) — sync branding to host first"