#!/bin/sh
# AppImage entry point. Tokens are stamped by tools/package_appimage.sh.
set -eu

if [ -z "${APPDIR:-}" ]; then
    echo "@APP_NAME@: APPDIR is not set; launch this through the AppImage runtime." >&2
    exit 1
fi

if [ -n "${@ENV_PREFIX@_DATA_DIR:-}" ]; then
    data_dir=$@ENV_PREFIX@_DATA_DIR
else
    if [ -n "${XDG_DATA_HOME:-}" ]; then
        data_home=$XDG_DATA_HOME
    elif [ -n "${HOME:-}" ]; then
        data_home=$HOME/.local/share
    else
        echo "@APP_NAME@: HOME is not set; set @ENV_PREFIX@_DATA_DIR explicitly." >&2
        exit 1
    fi
    data_dir=$data_home/@ARTIFACT_NAME@
fi

payload=$APPDIR/usr/share/@PAYLOAD_DIR@
runtime=$APPDIR/usr/bin/@EXE_NAME@

if [ ! -x "$runtime" ] || [ ! -f "$payload/game.toml" ]; then
    echo "@APP_NAME@: AppImage payload is incomplete." >&2
    exit 1
fi

mkdir -p "$data_dir" "$data_dir/saves" "$data_dir/cache" "$data_dir/mods"

for tree in assets bios licenses; do
    if [ -d "$payload/$tree" ]; then
        mkdir -p "$data_dir/$tree"
        cp -a "$payload/$tree/." "$data_dir/$tree/"
        chmod -R u+rwX "$data_dir/$tree"
    fi
done
if [ -d "$payload/mods" ]; then
    cp -a "$payload/mods/." "$data_dir/mods/"
    chmod -R u+rwX "$data_dir/mods"
fi

for file in game.toml game_options.toml README.md VERSION RELEASE_NOTES.md THIRD_PARTY_ATTRIBUTION.md RELEASE.txt START_HERE.txt LICENSE; do
    if [ -f "$payload/$file" ]; then
        cp -f "$payload/$file" "$data_dir/$file"
        chmod u+rw "$data_dir/$file"
    fi
done

if [ ! -f "$data_dir/input.ini" ] && [ -f "$payload/input.ini" ]; then
    cp "$payload/input.ini" "$data_dir/input.ini"
    chmod u+rw "$data_dir/input.ini"
fi

printf '%s\n' "@VERSION@" > "$data_dir/.appimage-layout-version"

if [ "${@ENV_PREFIX@_SEED_ONLY:-0}" = "1" ]; then
    printf '%s\n' "$data_dir"
    exit 0
fi

launcher=$data_dir/.@EXE_NAME@-runtime
ln -sfn "$runtime" "$launcher"
export @ENV_PREFIX@_APPIMAGE_PATH=${APPIMAGE:-}
export RECOMP_APPIMAGE_PATH=${APPIMAGE:-}
unset APPIMAGE

export PATH="$APPDIR/usr/bin${PATH:+:$PATH}"
export LD_LIBRARY_PATH="$APPDIR/usr/lib${LD_LIBRARY_PATH:+:$LD_LIBRARY_PATH}"
export XDG_DATA_DIRS="$APPDIR/usr/share${XDG_DATA_DIRS:+:$XDG_DATA_DIRS}"

cd "$data_dir"
exec "$launcher" "$@"
