bootstrap

#!/bin/bash

# Ensure we are just below the home directory
here="$(cd "$(dirname "${BASH_SOURCE[0]}")" &>/dev/null && pwd)"
if [[ "$(readlink -f $here/..)" != "$(readlink -f $HOME)" ]]; then
    echo "Error: bootstrap expects itself to be one level below \$HOME" 1>&2
    exit 1
fi
cd $here

# Warn on incompatible shell version
if [[ ${BASH_VERSION%%.*} -lt 4 ]]; then
    echo "Error: requires bash 4+, this is ${BASH_VERSION}" 1>&2
    exit 1
fi

# Error on missing required commands
for cmd in m4 stow; do
    if ! command -v $cmd &>/dev/null; then
        echo "Error: command unavailable: $cmd" 1>&2
        exit 1
    fi
done

# Warn on missing commands
for cmd in ack perl python3 stow xrdb xprop xset xsetroot xdotool xdpyinfo; do
    if ! command -v $cmd &>/dev/null; then
        echo "Warning: command unavailable: $cmd" 1>&2
    fi
done

# Warn on missing libraries
# Python 3
if command -v python3 &>/dev/null; then
    for module in argparse collections dns getch glob json math operator os psutil pycron re requests requests_toolbelt shutil socket stat sys xml xrp; do
        if ! python3 -c "import $module" &>/dev/null; then
            echo "Warning: python3 module unavailable: $module" 1>&2
        fi
    done
fi
# Perl
if command -v perl &>/dev/null; then
    for module in Cwd File::Next File::stat Term::ANSIColor; do
        if ! perl -e "use $module;" &>/dev/null; then
            echo "Warning: perl module unavailable: $module" 1>&2
        fi
    done
fi

# i3
if command -v i3 &>/dev/null; then
    mkdir -p ${I3_HOME:-~/.i3}/bin &>/dev/null
    ${STOW:-stow} i3
    (cd ${I3_HOME:-~/.i3} && make) &>/dev/null
    touch ${I3_HOME:-~/.i3}/i3blocks.conf
fi

# bash
if grep "bash" /proc/$PPID/comm &>/dev/null; then
    ${STOW:-stow} bash
fi

# bin
mkdir -p ~/bin &>/dev/null
${STOW:-stow} bin

# vim
if command -v vim &>/dev/null; then
    mkdir -p ~/.vim/colors &>/dev/null
    ${STOW:-stow} vim
fi