github-fetch

#!/bin/sh

# ensure args are passed
[ -z "$1" ] && echo -e "usage:\n\tgithub-fetch <author>/<repo> [--dmenu]" && exit 1

# seperate args into author/repo
author="$(echo "$1" | cut -d '/' -f1)"
repository="$(echo "$1" | cut -d '/' -f2)"

# buid the repository URL
repo_url="https://api.github.com/repos/${author}/${repository}/releases"

# determine the latest version
latest_version="$(curl -s "$repo_url" | grep browser_ | cut -d\" -f4 | head -n 1 | sed 's/.*'"$author"'\/'"$repository"'//' | cut -d '/' -f4)"

# allow for the use of dmenu for choosing file
if [ "$2" == "--dmenu" ]; then
    file_url="$(curl -s "$repo_url" | grep browser_ | cut -d\" -f4 | grep $latest_version | dmenu -l 5)"
    if [ ! -z "$file_url" ]; then
        curl -L $file_url -o ${repository}-${latest_version}-$(echo $file_url | sed -r 's/.*\/([^/]+)$/\1/') || exit 1
        exit 0
    fi
    echo "no selection made; download cancelled"
else
    # if dmenu isn't being used, just download the latest version
    echo "downloading version \"$latest_version\""
    file_url="$(curl -s "$repo_url" | grep browser_ | cut -d\" -f4 | grep $latest_version | head -n 1)"
    curl -L $file_url -o ${repository}-${latest_version}-$(echo $file_url | sed -r 's/.*\/([^/]+)$/\1/')
fi

# vim: syntax=sh