git-go

#!/usr/bin/env bash
command -v hub >/dev/null 2>&1 || {
    echo >&2 "This command needs hub installed and in PATH. http://defunkt.io/hub"
    exit 1
}

# [TODO] make login resolution a function call
if [ -z "$GITHUB_USER" ]; then
    echo >&2 "Please define GITHUB_USER with your GitHub user to let me know who you are."
    exit 1
fi

function gh_browse() {
    open "https://github.com/$1"
}

function repo_browse() {
    if [ -d .git ]; then
        hub browse "$1"
    else
        echo "Must be in a git repository to run that command."
        exit 1
    fi
}

function usage() {
    read -r -d '' usage <<"BLOCK"
USAGE:   git-go [OPTION] [COMMAND]

SYNOPSIS:

        CLI helper for GitHub.com, inspired by the CommandBar
        http://git.io/_OnQ3Q

OPTIONS:

        -g Perform command globally, not scoped to current git repository

COMMANDS:

        search "q" - Perform a search
        @user      - Browse a user
        explore    - Explore GitHub

        my [SUBCOMMAND] - Browse your personal items
           dashboard
           issues [assigned|mentioned|created]
           notifications
           profile
           pulls
           settings
           stars

        - Everything else forwards to `hub browse`
BLOCK

    echo "$usage"
}

[ $# -eq 0 ] && {
    usage
    exit 1
}

while getopts ":g" opt; do
    case $opt in
    g)
        global_browse=1
        ;;
    \?)
        echo "Invalid option: -$OPTARG" >&2
        ;;
    esac
done

# Clear all options and reset the command line
shift $((OPTIND - 1))

case "$1" in
search)
    gh_browse "search?q=$2"
    ;;
@*)
    target=${1//@/}
    gh_browse "$target"
    ;;
explore)
    gh_browse 'explore'
    ;;
my*)
    case $2 in
    dashboard)
        gh_browse "dashboard"
        ;;
    issues)
        if [[ -z $global_browse ]]; then
            case $3 in
            m*)
                filter="mentioned"
                ;;
            c*)
                filter="created_by"
                ;;
            *)
                filter="assigned"
                ;;
            esac
            repo_browse "-- issues/$filter/$GITHUB_USER"
        else
            gh_browse "dashboard/issues"
        fi
        ;;
    notifications)
        if [[ -z $global_browse ]]; then
            repo_browse "-- notifications/$GITHUB_USER"
        else
            gh_browse "dashboard/notifications"
        fi
        ;;
    profile)
        gh_browse "$GITHUB_USER"
        ;;
    pulls)
        if [[ -z $global_browse ]]; then
            repo_browse "-- pulls/$GITHUB_USER"
        else
            gh_browse "dashboard/pulls"
        fi
        ;;
    settings)
        gh_browse "settings/profile"
        ;;
    stars)
        gh_browse "stars"
        ;;
    esac
    ;;
*)
    repo_browse "-- $1"
    ;;
esac