#!/usr/bin/env bash
# Render in-game screenshots for visual review into <repo>/Screenshots/ (gitignored).
#
# Usage: Tools/render_screenshots.sh
# Rebuilds /Game/Test/ReviewMap from current content, runs the game on it
# (the GigLineShotActor walks three cameras, captures, quits), then copies
# the PNGs into Screenshots/.
set -euo pipefail

REPO="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
ENGINE="${UE_ENGINE_DIR:-/run/media/system/DATA/Engines/UE_5.8.4}"
PROJ="$REPO/Game/GigLine/GigLine.uproject"

echo "== 1/3 build review map =="
cd "$ENGINE"
./Engine/Binaries/Linux/UnrealEditor-Cmd "$PROJ" \
  -run=pythonscript -script="$REPO/Tools/ue_build_review_map.py" \
  -nullrhi -unattended -nopause -stdout
cat /tmp/ue-review-map-result.txt

echo "== 2/3 run game on review map =="
# -windowed -NoSplash: a fullscreen swap can leave the first frame uncaptured.
./Engine/Binaries/Linux/UnrealEditor-Cmd "$PROJ" /Game/Test/ReviewMap \
  -game -windowed -ResX=1920 -ResY=1080 -nopause -nosplash -stdout

echo "== 3/3 collect screenshots =="
mkdir -p "$REPO/Screenshots"
rm -f "$REPO"/Screenshots/review-*.png
found=0
for src in \
  "$REPO/Game/GigLine/Saved/Screenshots"/*/review-*.png \
  "$REPO/Game/GigLine/Saved/Screenshots"/*/*/review-*.png \
  "$HOME/.config/Epic/GigLine/Saved/Screenshots"/*/review-*.png; do
  [ -e "$src" ] || continue
  cp -f "$src" "$REPO/Screenshots/"
  found=1
done
[ "$found" = "1" ] || { echo "ERROR: no review-*.png found"; exit 1; }
ls -la "$REPO/Screenshots"