#!/bin/sh
# run_bugcond.sh — A/B test of launcher v6.5 (bug) vs v6.6 (fix) under the
# bug condition: the display is on buffer1 (yoffset=720) with the player's
# frame in buffer1 (the post-power screen-off state). Reproduces the reported
# "menu invisible / screen frozen on last frame".
HPID=976
st(){ awk '{print $3}' "/proc/$HPID/stat" 2>/dev/null; }
yoff(){ /data/fbprobe 2>/dev/null | grep -oE "yoffset = [0-9]+"; }

setup_bugcond(){
  # player frame into buffer1 (simulates the player's screen-off frame), then
  # put the display on buffer1 so yoffset=720 -> buffer1 displayed.
  /data/fbcopy >/dev/null 2>&1
  /data/fbpan 720 >/dev/null 2>&1
  echo "  setup: buffer1<-buffer0, yoffset=$(yoff)"
}

run_one(){
  BIN=$1; TAG=$2
  echo "=== $TAG ($BIN) ==="
  rm -f /usr/data/meow_launcherd.pid
  "$BIN" --sim-hotkey 1200 --sim-exit 9000 >/tmp/m_$TAG.log 2>&1 &
  LPID=$!
  sleep 4
  echo "  DURING t=4s: player_stat=$(st) yoffset=$(yoff)"
  dd if=/dev/fb0 of=/tmp/${TAG}_menu_b0.raw bs=960 count=720 status=none
  dd if=/dev/fb0 of=/tmp/${TAG}_menu_b1.raw bs=960 skip=720 count=720 status=none
  echo "  menu b0=$(md5sum /tmp/${TAG}_menu_b0.raw 2>/dev/null | awk '{print $1}') b1=$(md5sum /tmp/${TAG}_menu_b1.raw 2>/dev/null | awk '{print $1}')"
  echo "  player_stat_after_capture=$(st)"
  sleep 6
  echo "  AFTER t=10s: player_stat=$(st) yoffset=$(yoff)"
  dd if=/dev/fb0 of=/tmp/${TAG}_close_b1.raw bs=960 skip=720 count=720 status=none
  echo "  close b1=$(md5sum /tmp/${TAG}_close_b1.raw 2>/dev/null | awk '{print $1}')"
  echo "  log: $(grep -E 'fb:|fb backup|fb pan|fb restore|menu open|menu close' /tmp/m_$TAG.log | tr '\n' ' | ')"
  kill "$LPID" 2>/dev/null; sleep 1; killall meow_launcherd 2>/dev/null
  echo "  killed; player_stat=$(st)"
}

echo "launcher stopped, player pid=$HPID"
setup_bugcond
run_one /data/meow_launcherd.v65 OLD
setup_bugcond   # re-setup for the NEW run (player frame still in buffer1)
run_one /data/meow_launcherd.v66 NEW
echo "=== cleanup ==="
/data/fbpan 720 >/dev/null 2>&1   # leave display on buffer1 (player's frame)
echo "final yoffset=$(yoff) player_stat=$(st)"
echo "BACKLIGHT: $(cat /sys/class/backlight/backlight_pwm0/brightness 2>/dev/null)"
echo DONE