#!/bin/sh
set -eu

family="${1:-chromium}"
start_url="${NEKO_START_URL:-about:blank}"
arch="$(uname -m 2>/dev/null || echo unknown)"

prune_path() {
  target="${1:-}"
  [ -n "$target" ] || return 0
  [ -e "$target" ] || return 0
  rm -rf "$target"
}

find_bin() {
  if [ "$family" = "google-chrome" ]; then
    command -v google-chrome 2>/dev/null || command -v google-chrome-stable 2>/dev/null || true
  else
    command -v chromium 2>/dev/null || command -v chromium-browser 2>/dev/null || true
  fi
}

browser_bin="$(find_bin)"
if [ -z "$browser_bin" ]; then
  exit 0
fi

profile_dir="/home/neko/.config/chromium"
if [ "$family" = "google-chrome" ]; then
  profile_dir="/home/neko/.config/google-chrome"
fi

render_mode="${NEKO_BROWSER_RENDER_MODE:-auto}"
render_flags="--disable-gpu --use-gl=swiftshader --enable-unsafe-swiftshader"
case "$render_mode" in
  auto)
    case "$arch:$family" in
      x86_64:google-chrome|amd64:google-chrome)
        render_flags="--disable-gpu --disable-software-rasterizer --disable-features=UseSkiaRenderer"
        ;;
    esac
    ;;
  gpu)
    render_flags=""
    ;;
  legacy|x11|disable-gpu)
    render_flags="--disable-gpu --disable-software-rasterizer --disable-features=UseSkiaRenderer"
    ;;
  software|swiftshader)
    render_flags="--disable-gpu --use-gl=swiftshader --enable-unsafe-swiftshader --disable-features=UseSkiaRenderer"
    ;;
esac

mkdir -p "$profile_dir"
prune_path "$profile_dir/SingletonCookie"
prune_path "$profile_dir/SingletonLock"
prune_path "$profile_dir/SingletonSocket"
prune_path "$profile_dir/SingletonStartupLock"
prune_path "$profile_dir/BrowserMetrics"
prune_path "$profile_dir/Crash Reports"
prune_path "$profile_dir/Crashpad"
prune_path "$profile_dir/ShaderCache"
prune_path "$profile_dir/GrShaderCache"
prune_path "$profile_dir/GraphiteDawnCache"
prune_path "$profile_dir/Default/Cache"
prune_path "$profile_dir/Default/Code Cache"
prune_path "$profile_dir/Default/GPUCache"
prune_path "$profile_dir/Default/DawnGraphiteCache"
prune_path "$profile_dir/Default/DawnWebGPUCache"

exec "$browser_bin" \
  ${render_flags} \
  --window-position=0,0 \
  --display="${DISPLAY:?DISPLAY is required}" \
  --user-data-dir="$profile_dir" \
  --password-store=basic \
  --no-first-run \
  --start-minimized \
  --force-dark-mode \
  --disable-file-system \
  --disable-dev-shm-usage \
  --disable-background-networking \
  --disable-breakpad \
  --disable-default-apps \
  --disable-extensions \
  --disable-sync \
  --disable-translate \
  --metrics-recording-only \
  --no-default-browser-check \
  --no-first-run \
  "$start_url"