#!/bin/sh

# ============================================================
# LabWC Alpine Setup Script
# Version 10
#
# Запуск:
#
#   ./setup.sh
#   ./setup.sh ivan
#
# Можно запускать от root ИЛИ обычного пользователя.
#
# Скрипт автоматически использует sudo.
#
# ============================================================

set -eu

USER_NAME="${1:-ivan}"

HOME_DIR="/home/$USER_NAME"
PROFILE="$HOME_DIR/.profile"

ZENITH_REPO="https://zenithcode.duckdns.org/s13bby/zenith-cli.git"
ZENITH_DIR="$HOME_DIR/zenith-cli"
LOCAL_BIN="$HOME_DIR/.local/bin"

# ============================================================
# Абсолютный путь к скрипту
# ============================================================

case "$0" in
    /*)
        SCRIPT_PATH="$0"
        ;;
    *)
        SCRIPT_PATH="$(pwd)/$0"
        ;;
esac

# ============================================================
# Проверка имени
# ============================================================

case "$USER_NAME" in
    ""|*[!a-zA-Z0-9_-]*)
        echo "[!] Некорректное имя пользователя: $USER_NAME"
        exit 1
        ;;
esac

# ============================================================
# Автоматический sudo
# ============================================================

if [ "$(id -u)" -ne 0 ]; then

    echo
    echo "=================================================="
    echo "[*] Запущено от пользователя: $(id -un)"
    echo "[*] Нужны root-права."
    echo "=================================================="
    echo

    if ! command -v sudo >/dev/null 2>&1; then

        echo "[!] sudo не установлен."
        echo
        echo "[!] Выполните один раз от root:"
        echo
        echo "    apk add sudo"
        echo
        exit 1

    fi

    exec sudo "$SCRIPT_PATH" "$@"

fi

# ============================================================
# Информация
# ============================================================

echo
echo "=================================================="
echo "       LabWC Alpine Setup Script v10"
echo "=================================================="
echo
echo "[*] User:   $USER_NAME"
echo "[*] Home:   $HOME_DIR"
echo "[*] Alpine: $(cat /etc/alpine-release 2>/dev/null || echo unknown)"
echo

# ============================================================
# Проверка Alpine
# ============================================================

if [ ! -f /etc/alpine-release ]; then

    echo "[!] Это не Alpine Linux."
    exit 1

fi

# ============================================================
# Проверка repositories
# ============================================================

if [ ! -f /etc/apk/repositories ]; then

    echo "[!] /etc/apk/repositories отсутствует."
    exit 1

fi

# ============================================================
# Функции
# ============================================================

package_exists() {
    PACKAGE="$1"

    apk search -x "$PACKAGE" 2>/dev/null |
        grep -Eq "^${PACKAGE}(-[0-9].*)?$"
}


install_required() {
    PACKAGE="$1"

    echo
    echo "[*] Проверка обязательного пакета: $PACKAGE"

    if apk info -e "$PACKAGE" >/dev/null 2>&1; then

        echo "[+] $PACKAGE уже установлен."
        return 0

    fi

    if ! package_exists "$PACKAGE"; then

        echo
        echo "=================================================="
        echo "[!!!] ОШИБКА"
        echo "=================================================="
        echo
        echo "[!] Обязательный пакет отсутствует:"
        echo
        echo "    $PACKAGE"
        echo
        echo "[!] Alpine:"
        cat /etc/alpine-release
        echo
        echo "[!] Репозитории:"
        cat /etc/apk/repositories
        echo

        exit 1

    fi

    apk add "$PACKAGE"
}


install_optional() {
    PACKAGE="$1"

    echo
    echo "[*] Необязательный пакет: $PACKAGE"

    if apk info -e "$PACKAGE" >/dev/null 2>&1; then

        echo "[+] Уже установлен."
        return 0

    fi

    if package_exists "$PACKAGE"; then

        apk add "$PACKAGE"

        echo "[+] Установлен."

    else

        echo "[!] Пакет отсутствует."
        echo "[!] Пропускаем."

    fi
}


add_user_group() {
    GROUP_NAME="$1"

    if ! getent group "$GROUP_NAME" >/dev/null 2>&1; then

        echo "[!] Группа $GROUP_NAME отсутствует."
        return 0

    fi

    if id -nG "$USER_NAME" 2>/dev/null |
        tr ' ' '\n' |
        grep -qx "$GROUP_NAME"
    then

        echo "[+] $USER_NAME уже в группе $GROUP_NAME."

    else

        echo "[*] Добавление $USER_NAME в группу $GROUP_NAME..."

        addgroup "$USER_NAME" "$GROUP_NAME"

    fi
}


enable_service() {
    SERVICE="$1"

    echo
    echo "[*] Служба: $SERVICE"

    if ! command -v rc-service >/dev/null 2>&1; then

        echo "[!] OpenRC недоступен."
        return 0

    fi

    if rc-service "$SERVICE" status >/dev/null 2>&1; then

        echo "[+] $SERVICE уже запущен."

    else

        echo "[*] Запуск $SERVICE..."

        rc-service "$SERVICE" start 2>/dev/null || true

    fi

    rc-update add "$SERVICE" default 2>/dev/null || true
}


check_command() {
    NAME="$1"
    COMMAND="$2"

    printf '%-25s' "$NAME:"

    if command -v "$COMMAND" >/dev/null 2>&1; then
        echo "OK"
    else
        echo "ERROR"
    fi
}

# ============================================================
# Community
# ============================================================

echo
echo "=================================================="
echo "[*] Репозиторий community"
echo "=================================================="

if grep -qE '^[[:space:]]*[^#[:space:]].*/community/?[[:space:]]*$' \
    /etc/apk/repositories
then

    echo "[+] community уже включён."

elif grep -qE '^[[:space:]]*#.*\/community/?[[:space:]]*$' \
    /etc/apk/repositories
then

    echo "[*] Раскомментирование community..."

    sed -i \
        's|^[[:space:]]*#\(.*\/community/?[[:space:]]*\)$|\1|' \
        /etc/apk/repositories

else

    echo "[!] community не найден."
    echo
    cat /etc/apk/repositories
    echo

    exit 1

fi

# ============================================================
# APK update
# ============================================================

echo
echo "[*] apk update..."

apk update

# ============================================================
# Пользователь
# ============================================================

echo
echo "=================================================="
echo "[*] Пользователь"
echo "=================================================="

if id "$USER_NAME" >/dev/null 2>&1; then

    echo "[+] $USER_NAME уже существует."

else

    echo "[*] Создание $USER_NAME..."

    adduser -D "$USER_NAME"

    echo
    echo "[!] Задайте пароль для $USER_NAME."
    passwd "$USER_NAME"

fi

# ============================================================
# Базовые пакеты
# ============================================================

echo
echo "=================================================="
echo "[*] Базовые пакеты"
echo "=================================================="

install_required sudo
install_required nano
install_required git
install_required bash
install_required build-base

# ============================================================
# Sudo
# ============================================================

echo
echo "=================================================="
echo "[*] Настройка sudo"
echo "=================================================="

if [ -d /etc/sudoers.d ]; then

    cat > /etc/sudoers.d/wheel << 'EOF'
%wheel ALL=(ALL) ALL
EOF

    chmod 440 /etc/sudoers.d/wheel

else

    if ! grep -qE '^%wheel[[:space:]]+ALL=\(ALL\)[[:space:]]+ALL' \
        /etc/sudoers
    then

        echo '%wheel ALL=(ALL) ALL' >> /etc/sudoers

    fi

fi

# ============================================================
# Группы
# ============================================================

echo
echo "=================================================="
echo "[*] Группы"
echo "=================================================="

add_user_group wheel

# ------------------------------------------------------------
# seat
#
# ВАЖНО:
# seatd — имя программы/демона.
# seat  — группа.
#
# НЕ добавляем пользователя в группу "seatd".
# ------------------------------------------------------------

if ! getent group seat >/dev/null 2>&1; then

    echo "[*] Группа seat отсутствует."
    echo "[*] Создание группы seat..."

    addgroup seat

fi

add_user_group seat

# ============================================================
# Wayland / graphics
# ============================================================

echo
echo "=================================================="
echo "[*] Wayland / graphics"
echo "=================================================="

# НЕ используем mesa-dri.
install_required mesa
install_required libinput
install_required seatd
install_required dbus
install_required polkit

# ============================================================
# zenith-cli dependencies
# ============================================================

echo
echo "=================================================="
echo "[*] zenith-cli dependencies"
echo "=================================================="

install_required cmake
install_required curl-dev
install_required opencv-dev

# ============================================================
# Desktop
# ============================================================

echo
echo "=================================================="
echo "[*] Desktop"
echo "=================================================="

install_required labwc
install_required alacritty
install_required waybar
install_required mako
install_required swaybg
install_required wofi
install_required font-noto
install_required font-dejavu
install_required wl-clipboard
install_required xdg-desktop-portal
install_required pipewire
install_required wireplumber
install_required alsa-utils
install_required networkmanager
install_required pcmanfm
install_required firefox
install_required swaylock

# ============================================================
# Необязательные пакеты
# ============================================================

echo
echo "=================================================="
echo "[*] Необязательные пакеты"
echo "=================================================="

# GTK portal может отсутствовать в некоторых конфигурациях.
install_optional xdg-desktop-portal-gtk

# network-manager-applet может отсутствовать в текущей ветке.
#
# Он НЕ нужен для работы NetworkManager.
# Поэтому не ломаем установку из-за него.
install_optional network-manager-applet

# ============================================================
# OpenRC
# ============================================================

echo
echo "=================================================="
echo "[*] OpenRC"
echo "=================================================="

enable_service seatd
enable_service dbus
enable_service networkmanager

# ============================================================
# LabWC configuration
# ============================================================

echo
echo "=================================================="
echo "[*] Конфигурация LabWC"
echo "=================================================="

mkdir -p "$HOME_DIR/.config/labwc"

# ------------------------------------------------------------
# environment
# ------------------------------------------------------------

cat > "$HOME_DIR/.config/labwc/environment" << 'EOF'
XDG_CURRENT_DESKTOP=labwc
XDG_SESSION_DESKTOP=labwc
XDG_SESSION_TYPE=wayland

MOZ_ENABLE_WAYLAND=1
QT_QPA_PLATFORM=wayland
SDL_VIDEODRIVER=wayland

LIBSEAT_BACKEND=seatd
EOF

# ------------------------------------------------------------
# autostart
# ------------------------------------------------------------

cat > "$HOME_DIR/.config/labwc/autostart" << 'EOF'
#!/bin/sh

# ============================================================
# Runtime directory
# ============================================================

if [ -z "${XDG_RUNTIME_DIR:-}" ]; then
    export XDG_RUNTIME_DIR="/tmp/user-$(id -u)"
fi

if [ ! -d "$XDG_RUNTIME_DIR" ]; then
    mkdir -p "$XDG_RUNTIME_DIR"
    chmod 700 "$XDG_RUNTIME_DIR"
fi

# ============================================================
# NetworkManager applet
#
# Запускаем ТОЛЬКО если он реально установлен.
# ============================================================

if command -v nm-applet >/dev/null 2>&1; then
    nm-applet &
fi

# ============================================================
# Waybar
# ============================================================

if command -v waybar >/dev/null 2>&1; then
    waybar &
fi

# ============================================================
# Mako
# ============================================================

if command -v mako >/dev/null 2>&1; then
    mako &
fi

# ============================================================
# PipeWire
# ============================================================

if command -v pipewire >/dev/null 2>&1; then

    if ! pgrep -x pipewire >/dev/null 2>&1; then
        pipewire &
    fi

fi

# ============================================================
# WirePlumber
# ============================================================

if command -v wireplumber >/dev/null 2>&1; then

    if ! pgrep -x wireplumber >/dev/null 2>&1; then
        wireplumber &
    fi

fi

# ============================================================
# Wallpaper
# ============================================================

if command -v swaybg >/dev/null 2>&1 &&
   [ -f /usr/share/backgrounds/alpine/alpine-wallpaper.png ]
then

    swaybg \
        -i /usr/share/backgrounds/alpine/alpine-wallpaper.png \
        -m fill &

fi
EOF

chmod +x "$HOME_DIR/.config/labwc/autostart"

# ============================================================
# zenith-cli
# ============================================================

echo
echo "=================================================="
echo "[*] zenith-cli"
echo "=================================================="

if [ -d "$ZENITH_DIR/.git" ]; then

    echo "[+] Репозиторий уже существует."

    su - "$USER_NAME" -c "
        set -eu
        cd '$ZENITH_DIR'
        git pull --ff-only
    "

else

    echo "[*] Клонирование..."

    su - "$USER_NAME" -c "
        set -eu
        git clone '$ZENITH_REPO' '$ZENITH_DIR'
    "

fi

# ============================================================
# Проверка исходников
# ============================================================

if [ ! -f "$ZENITH_DIR/build.sh" ]; then

    echo
    echo "[!] build.sh не найден:"
    echo "    $ZENITH_DIR/build.sh"
    exit 1

fi

if [ ! -f "$ZENITH_DIR/CMakeLists.txt" ]; then

    echo
    echo "[!] CMakeLists.txt не найден:"
    echo "    $ZENITH_DIR/CMakeLists.txt"
    exit 1

fi

# ============================================================
# Сборка
# ============================================================

echo
echo "=================================================="
echo "[*] Сборка zenith-cli"
echo "=================================================="

su - "$USER_NAME" -c "
    set -eu

    cd '$ZENITH_DIR'

    chmod +x build.sh

    ./build.sh

    if [ ! -f ./zenith-cli ]; then

        echo '[!] zenith-cli не найден после сборки.'

        exit 1

    fi

    chmod +x ./zenith-cli

    mkdir -p '$LOCAL_BIN'

    cp ./zenith-cli '$LOCAL_BIN/zenith-cli'

    chmod +x '$LOCAL_BIN/zenith-cli'

    echo '[+] zenith-cli установлен.'
"

# ============================================================
# PATH
# ============================================================

echo
echo "=================================================="
echo "[*] PATH"
echo "=================================================="

touch "$PROFILE"

if ! grep -qF 'export PATH="$HOME/.local/bin:$PATH"' "$PROFILE"; then

    cat >> "$PROFILE" << 'EOF'

# User local binaries
export PATH="$HOME/.local/bin:$PATH"
EOF

fi

# ============================================================
# XDG_RUNTIME_DIR
# ============================================================

if ! grep -qF '# XDG-RUNTIME-DIR' "$PROFILE"; then

    cat >> "$PROFILE" << 'EOF'

# XDG-RUNTIME-DIR

if [ -z "${XDG_RUNTIME_DIR:-}" ]; then
    export XDG_RUNTIME_DIR="/tmp/user-$(id -u)"
fi

if [ ! -d "$XDG_RUNTIME_DIR" ]; then
    mkdir -p "$XDG_RUNTIME_DIR"
    chmod 700 "$XDG_RUNTIME_DIR"
fi
EOF

fi

# ============================================================
# Автологин tty1
# ============================================================

echo
echo "=================================================="
echo "[*] Автологин tty1"
echo "=================================================="

if [ -f /etc/inittab ]; then

    if [ ! -f /etc/inittab.bak ]; then

        cp /etc/inittab /etc/inittab.bak

    fi

    if grep -q '^tty1::respawn:/sbin/getty' /etc/inittab; then

        sed -i \
            "s|^tty1::respawn:/sbin/getty.*|tty1::respawn:/sbin/getty -a $USER_NAME 38400 tty1|" \
            /etc/inittab

    elif ! grep -q '^tty1::respawn:' /etc/inittab; then

        echo \
            "tty1::respawn:/sbin/getty -a $USER_NAME 38400 tty1" \
            >> /etc/inittab

    fi

else

    echo "[!] /etc/inittab отсутствует."
    echo "[!] Автологин не настроен."

fi

# ============================================================
# Автозапуск LabWC
# ============================================================

echo
echo "=================================================="
echo "[*] Автозапуск LabWC"
echo "=================================================="

if ! grep -qF '# LABWC-AUTOSTART' "$PROFILE"; then

    cat >> "$PROFILE" << 'EOF'

# LABWC-AUTOSTART

if [ "$(tty 2>/dev/null)" = "/dev/tty1" ] &&
   [ -z "${WAYLAND_DISPLAY:-}" ]; then

    export XDG_SESSION_TYPE=wayland
    export XDG_CURRENT_DESKTOP=labwc
    export XDG_SESSION_DESKTOP=labwc
    export LIBSEAT_BACKEND=seatd

    exec dbus-run-session -- labwc

fi
EOF

fi

# ============================================================
# Права
# ============================================================

echo
echo "=================================================="
echo "[*] Права"
echo "=================================================="

if [ -d "$HOME_DIR/.config" ]; then

    chown -R "$USER_NAME:$USER_NAME" \
        "$HOME_DIR/.config"

fi

if [ -f "$PROFILE" ]; then

    chown "$USER_NAME:$USER_NAME" \
        "$PROFILE"

fi

if [ -d "$HOME_DIR/.local" ]; then

    chown -R "$USER_NAME:$USER_NAME" \
        "$HOME_DIR/.local"

fi

if [ -d "$ZENITH_DIR" ]; then

    chown -R "$USER_NAME:$USER_NAME" \
        "$ZENITH_DIR"

fi

# ============================================================
# Финальная проверка
# ============================================================

echo
echo "=================================================="
echo "             ФИНАЛЬНАЯ ПРОВЕРКА"
echo "=================================================="
echo

echo "[*] Пользователь:"
id "$USER_NAME"

echo

printf '%-25s' "wheel:"
if id -nG "$USER_NAME" |
    tr ' ' '\n' |
    grep -qx wheel
then
    echo "OK"
else
    echo "ERROR"
fi

printf '%-25s' "seat:"
if id -nG "$USER_NAME" |
    tr ' ' '\n' |
    grep -qx seat
then
    echo "OK"
else
    echo "ERROR"
fi

echo

check_command "seatd" "seatd"
check_command "LabWC" "labwc"
check_command "Waybar" "waybar"
check_command "PipeWire" "pipewire"
check_command "WirePlumber" "wireplumber"
check_command "NetworkManager" "nmcli"
check_command "D-Bus" "dbus-run-session"
check_command "Bash" "bash"
check_command "CMake" "cmake"

echo

printf '%-25s' "OpenCV:"
if apk info -e opencv-dev >/dev/null 2>&1; then
    echo "OK"
else
    echo "ERROR"
fi

printf '%-25s' "nm-applet:"
if command -v nm-applet >/dev/null 2>&1; then
    echo "OK"
else
    echo "OPTIONAL / SKIPPED"
fi

printf '%-25s' "zenith-cli:"
if [ -x "$LOCAL_BIN/zenith-cli" ]; then
    echo "OK"
else
    echo "ERROR"
fi

echo
echo "=================================================="
echo "             УСТАНОВКА ЗАВЕРШЕНА"
echo "=================================================="
echo
echo "[+] Пользователь: $USER_NAME"
echo "[+] LabWC установлен."
echo "[+] NetworkManager установлен."
echo "[+] seatd установлен."
echo "[+] PipeWire установлен."
echo "[+] zenith-cli установлен."
echo
echo "[!] network-manager-applet не является обязательным."
echo "[!] Если его нет — NetworkManager всё равно работает."
echo
echo "[!] Перезагрузка:"
echo
echo "    reboot"
echo
echo "После перезагрузки:"
echo
echo "  1. Автоматический вход $USER_NAME"
echo "  2. Запуск LabWC"
echo "  3. Waybar"
echo "  4. Mako"
echo "  5. PipeWire / WirePlumber"
echo "  6. NetworkManager"
echo
echo "zenith-cli:"
echo
echo "    zenith-cli"
echo
echo "=================================================="