#!/bin/bash

# program that prompts the user to install a package if it is not already installed

if [ "$1" == -i ]; then
    if ! [ -e /tmp/instantinstalllist ]; then
        echo "no install list found"
        exit
    fi

    while read p; do
        echo "installing $p"
        yay -S --needed --noconfirm "$p"
    done </tmp/instantinstalllist

    rm /tmp/instantinstalllist
    exit
fi

if [ -z "$1" ]; then
    echo "no package to check"
    exit
fi

checkpackage() {
    if command -v "$1" || pacman -Qi "$1"; then
        echo "package $1 is installed"
        return 0
    else
        echo "package $1 missing"
        return 1
    fi
}

[ -e /tmp/instantinstalllist ] && rm /tmp/instantinstalllist

if ! [ -e /usr/bin/pacman ]; then
    # pacman not detected
    if ! command -v pacman; then
        {
            echo "please install the following packages with your package manager"
            for i in $@; do
                if ! command -v "$i"; then
                    echo "$i"
                fi
            done
        } | imenu -M
        exit 1
    fi
fi

for i in $@; do
    echo "processing package $i"
    # skip already installed packages
    checkpackage "$i" && continue
    if ! imenu -c "the extra package $i is required. Download now?"; then
        echo "package will not be installed"
        exit 1
    fi
    echo "$i" >>/tmp/instantinstalllist
    INSTALLPACKAGES="true"
    if ! checkinternet; then
        imenu -e "internet is required to install packages"
        exit 1
    fi
done

if [ -n "$INSTALLPACKAGES" ]; then
    echo "running terminal emulator"
    # install packages in a terminal emulator
    st -e "bash" -c "instantinstall -i"
fi

for i in $@; do
    checkpackage "$i" || exit 1
done