#!/usr/bin/env bash
set -euo pipefail

if [[ ! -r /etc/os-release ]]; then
    echo "Tidak bisa mendeteksi OS"
    exit 1
fi

. /etc/os-release

OS_ID="${ID:-}"
OS_LIKE="${ID_LIKE:-}"

run_as_root() {
    if [[ "${EUID}" -eq 0 ]]; then
        "$@"
        return
    fi

    if command -v sudo >/dev/null 2>&1; then
        sudo "$@"
        return
    fi

    echo "Perlu akses root, tapi sudo tidak ditemukan."
    echo "Jalankan skrip ini sebagai root atau install sudo terlebih dahulu."
    exit 1
}

install_mise() {
    local shell_name
    shell_name="$(basename "${SHELL:-}")"

    case "${shell_name}" in
        bash|zsh|fish)
            curl -fsSL "https://mise.run/${shell_name}" | sh
            ;;
        *)
            curl -fsSL https://mise.run | sh
            echo
            echo "Shell tidak dikenali untuk auto-activation: ${shell_name:-unknown}"
            echo "Tambahkan manual sesuai shell kamu:"
            echo '  eval "$(~/.local/bin/mise activate bash)"'
            ;;
    esac

    export PATH="${HOME}/.local/bin:${PATH}"

    if command -v mise >/dev/null 2>&1; then
        echo
        echo "mise berhasil terinstall:"
        mise --version
        echo
        echo "Restart terminal, lalu cek dengan:"
        echo "  mise doctor"
    else
        echo "mise belum masuk PATH."
        echo "Coba jalankan:"
        echo '  export PATH="$HOME/.local/bin:$PATH"'
        echo "  ~/.local/bin/mise --version"
    fi
}

install_tailscale() {
    curl -fsSL https://tailscale.com/install.sh | sh
}

login_tailscale() {
    local tailscale_auth_key

    if ! command -v tailscale >/dev/null 2>&1; then
        echo "tailscale belum ditemukan, login dilewati."
        return
    fi

    echo
    read -r -s -p "Masukkan Tailscale auth key (kosongkan untuk skip): " tailscale_auth_key
    echo

    if [[ -z "${tailscale_auth_key}" ]]; then
        echo "Login Tailscale dilewati."
        return
    fi

    run_as_root tailscale up --auth-key="${tailscale_auth_key}"
}

if [[ "${OS_ID}" == "fedora" || "${OS_LIKE}" == *"fedora"* || "${OS_LIKE}" == *"rhel"* ]]; then
    echo "OS berbasis Fedora/RHEL terdeteksi"
    run_as_root dnf update -y
    run_as_root dnf install -y ca-certificates curl git gzip tar unzip wget xz
    install_tailscale
    login_tailscale
    install_mise
elif [[ "${OS_ID}" == "ubuntu" || "${OS_ID}" == "debian" || "${OS_LIKE}" == *"debian"* ]]; then
    echo "OS berbasis Debian/Ubuntu terdeteksi"
    run_as_root apt-get update
    run_as_root apt-get install -y ca-certificates curl git gzip tar unzip wget xz-utils
    install_tailscale
    login_tailscale
    install_mise
else
    echo "OS tidak didukung:"
    echo "ID=${OS_ID}"
    echo "ID_LIKE=${OS_LIKE}"
    exit 1
fi