#!/bin/sh

# --- Настройки ---
REPO_API="https://git.ownsrv.ru/api/v1/repos/yanistyle/podkop/releases"
DOWNLOAD_DIR="/tmp/podkop"
COUNT=3

rm -rf "$DOWNLOAD_DIR"
mkdir -p "$DOWNLOAD_DIR"

msg() {
    printf "\033[32;1m%s\033[0m\n" "$1"
}

# --- Проверка и установка зависимостей ---
install_dependencies() {
    deps="curl jq wget"
    for dep in $deps; do
        if ! command -v $dep >/dev/null 2>&1; then
            msg "$dep не найден. Пытаемся установить..."
            opkg update
            opkg install $dep || { msg "Не удалось установить $dep"; exit 1; }
        fi
    done
}

# --- Проверка системы ---
check_system() {
    MODEL=$(cat /tmp/sysinfo/model 2>/dev/null || echo "Unknown")
    msg "Router model: $MODEL"

    openwrt_version=$(cat /etc/openwrt_release 2>/dev/null | grep DISTRIB_RELEASE | cut -d"'" -f2 | cut -d'.' -f1)
    if [ "$openwrt_version" = "23" ]; then
        msg "OpenWrt 23.05 не поддерживается начиная с podkop 0.5.0"
        exit 1
    fi

    AVAILABLE_SPACE=$(df /overlay | awk 'NR==2 {print $4}')
    REQUIRED_SPACE=15360
    if [ "$AVAILABLE_SPACE" -lt "$REQUIRED_SPACE" ]; then
        msg "Error: Insufficient space in flash"
        msg "Available: $((AVAILABLE_SPACE/1024))MB, Required: $((REQUIRED_SPACE/1024))MB"
        exit 1
    fi

    if ! nslookup google.com >/dev/null 2>&1; then
        msg "DNS not working"
        exit 1
    fi

    if opkg list-installed | grep -q https-dns-proxy; then
        msg "Сonflicting package detected: https-dns-proxy. Remove?"
        while true; do
            read -r -p '' DNSPROXY
            case $DNSPROXY in
                yes|y|Y)
                    opkg remove --force-depends luci-app-https-dns-proxy https-dns-proxy luci-i18n-https-dns-proxy*
                    break
                    ;;
                *)
                    msg "Exit"
                    exit 1
                    ;;
            esac
        done
    fi
}

# --- Проверка и обновление sing-box ---
sing_box() {
    if ! opkg list-installed | grep -q "^sing-box"; then
        return
    fi
    sing_box_version=$(sing-box version | head -n 1 | awk '{print $3}')
    required_version="1.12.4"
    if [ "$(echo -e "$sing_box_version\n$required_version" | sort -V | head -n 1)" != "$required_version" ]; then
        msg "sing-box version $sing_box_version is older than required $required_version"
        msg "Removing old version..."
        opkg remove sing-box
    fi
}

# --- Основная логика ---
main() {
    check_system
    sing_box
    install_dependencies

    /usr/sbin/ntpd -q -p 194.190.168.1 -p 216.239.35.0 -p 216.239.35.4 -p 162.159.200.1 -p 162.159.200.123

    opkg update || { echo "opkg update failed"; exit 1; }

    if [ -f "/etc/init.d/podkop" ]; then
        msg "Podkop is already installed. Upgraded..."
    else
        msg "Installed podkop..."
    fi

    # --- Получаем последний релиз из Gitea ---
    msg "Fetching latest release info from Gitea..."
    LATEST_TAG=$(curl -s "$REPO_API" | jq -r '.[0].tag_name')
    if [ -z "$LATEST_TAG" ] || [ "$LATEST_TAG" = "null" ]; then
        msg "Не удалось получить последний релиз"
        exit 1
    fi
    msg "Последний релиз: $LATEST_TAG"

    # --- Получаем список всех assets ---
    ASSETS=$(curl -s "$REPO_API" | jq -r '.[0].assets[].name')

    download_success=0
    for filename in $ASSETS; do
        filepath="$DOWNLOAD_DIR/$filename"
        attempt=0
        while [ $attempt -lt $COUNT ]; do
            msg "Download $filename (attempt $((attempt+1)))..."
            wget -q -O "$filepath" "https://git.ownsrv.ru/yanistyle/podkop/releases/download/$LATEST_TAG/$filename"
            if [ -s "$filepath" ]; then
                msg "$filename successfully downloaded"
                download_success=1
                break
            fi
            msg "Download error $filename. Retry..."
            rm -f "$filepath"
            attempt=$((attempt+1))
        done
        if [ $attempt -eq $COUNT ]; then
            msg "Failed to download $filename after $COUNT attempts"
        fi
    done

    if [ $download_success -eq 0 ]; then
        msg "No packages were downloaded successfully"
        exit 1
    fi

    # --- Установка пакетов ---
    for pkg in podkop luci-app-podkop; do
        file=$(ls "$DOWNLOAD_DIR" | grep "^$pkg" | head -n 1)
        if [ -n "$file" ]; then
            msg "Installing $file"
            opkg install "$DOWNLOAD_DIR/$file"
            sleep 3
        fi
    done

    ru=$(ls "$DOWNLOAD_DIR" | grep "luci-i18n-podkop-ru" | head -n 1)
    if [ -n "$ru" ]; then
        if opkg list-installed | grep -q luci-i18n-podkop-ru; then
            msg "Upgraded ru translation..."
            opkg remove luci-i18n-podkop*
            opkg install "$DOWNLOAD_DIR/$ru"
        else
            msg "Русский язык интерфейса ставим? y/n"
            while true; do
                read -r -p '' RUS
                case $RUS in
                    y)
                        opkg remove luci-i18n-podkop*
                        opkg install "$DOWNLOAD_DIR/$ru"
                        break
                        ;;
                    n)
                        break
                        ;;
                    *)
                        echo "Введите y или n"
                        ;;
                esac
            done
        fi
    fi

    find "$DOWNLOAD_DIR" -type f -name '*podkop*' -exec rm {} \;
}

main