#!/usr/bin/env sh
# vim: syntax=sh

if [ "${SH_TRACE-0}" -eq 1 ]; then
    # shellcheck disable=2016
    PS4="$(printf '%b%s%b:\n' '\033[31m' 'L${LINENO}' '\033[0m')"
    export PS4
    set -x
fi

appName='notepad++'
exeName="${appName}.exe"

readonly appName exeName

pkgDir="/usr/share/${appName}"
localDir="${HOME}/.local/share/${appName}"
configDir="${HOME}/.config/${appName}"
cacheDir="${HOME}/.cache/${appName}"

readonly pkgDir localDir configDir cacheDir

(
    oldAppName='notepadpp'
    oldConfigDir="${HOME}/.config/${oldAppName}"
    readonly oldAppName oldConfigDir
    if [ -d "${oldConfigDir}" ]; then
        printf 'Old configdir found. Renaming...'
        mv -v "${oldConfigDir}" "${configDir}"
    fi
)

if [ ! -d "${pkgDir}" ]; then
    printf 'Cannot find application directory: %s\n' >&2 "${pkgDir}"
    exit 1
fi

# shellcheck disable=2155
readonly uid="$(id -u)"
# shellcheck disable=2155
readonly gid="$(id -g)"

cleanup() {
    while umount "${localDir}" 2>&1 | grep -q 'busy\.$' ; do
        sleep 2
    done
}

# Create necessary directories
for appDir in "${localDir}" "${cacheDir}" "${configDir}"; do
    if [ ! -d "${appDir}" ]; then
        mkdir -p "${appDir}"
    fi
done

# Unmount fuse-overlayfs just in case
if mount | grep -q "${localDir}"; then
    cleanup
fi

# Mount the necessary directories with id mapping
if ! fuse-overlayfs -o squash_to_uid="${uid}" -o squash_to_gid="${gid}" \
        -o lowerdir="${pkgDir}" -o upperdir="${configDir}" -o workdir="${cacheDir}" \
        "${localDir}"; then
    print 'Mount failed: cannot mount fuse-overlayfs\n' >&2
    exit 2
fi

trap 'cleanup' INT TERM EXIT

# Use default WINEPREFIX - usually ~/.wine
unset WINEPREFIX
# Don't prompt to wine-mono and wine-gecko install - neither is needed
WINEDLLOVERRIDES="${WINEDLLOVERRIDES};mscoree=d;mshtml=d"
# If WINEDEBUG is explicitly set as env var use it
if [ -z "${WINEDEBUG}" ]; then
    WINEDEBUG=-all
fi

export WINEPREFIX WINEDLLOVERRIDES WINEDEBUG

wine "${localDir}/${exeName}" "${@}"