#!/usr/bin/env bash

set -e

# List of apps to install
APPS=(
    git
    curl
    vim
    htop
)

# Detect package manager
detect_package_manager() {
    if command -v apt >/dev/null 2>&1; then
        PKG_MANAGER="apt"
    elif command -v dnf >/dev/null 2>&1; then
        PKG_MANAGER="dnf"
    elif command -v yum >/dev/null 2>&1; then
        PKG_MANAGER="yum"
    elif command -v pacman >/dev/null 2>&1; then
        PKG_MANAGER="pacman"
    elif command -v zypper >/dev/null 2>&1; then
        PKG_MANAGER="zypper"
    elif command -v apk >/dev/null 2>&1; then
        PKG_MANAGER="apk"
    else
        echo "Unsupported package manager."
        exit 1
    fi
}

# Check if package is installed
is_installed() {
    local pkg="$1"

    case "$PKG_MANAGER" in
        apt)
            dpkg -s "$pkg" >/dev/null 2>&1
            ;;
        dnf|yum)
            rpm -q "$pkg" >/dev/null 2>&1
            ;;
        pacman)
            pacman -Qi "$pkg" >/dev/null 2>&1
            ;;
        zypper)
            rpm -q "$pkg" >/dev/null 2>&1
            ;;
        apk)
            apk info -e "$pkg" >/dev/null 2>&1
            ;;
    esac
}

# Install package
install_package() {
    local pkg="$1"

    case "$PKG_MANAGER" in
        apt)
            sudo apt update
            sudo apt install -y "$pkg"
            ;;
        dnf)
            sudo dnf install -y "$pkg"
            ;;
        yum)
            sudo yum install -y "$pkg"
            ;;
        pacman)
            sudo pacman -Sy --noconfirm "$pkg"
            ;;
        zypper)
            sudo zypper install -y "$pkg"
            ;;
        apk)
            sudo apk add "$pkg"
            ;;
    esac
}

detect_package_manager

echo "Detected package manager: $PKG_MANAGER"
echo

for app in "${APPS[@]}"; do
    if is_installed "$app"; then
        echo "[OK] $app is already installed."
    else
        echo "[INSTALL] Installing $app..."
        install_package "$app"
    fi
done

echo
echo "Done."