#!/usr/bin/env bash
# reset environment variables that could interfere with normal usage
unset -v GREP_OPTIONS
# put all utility functions here

# make a temporary file
git_extra_mktemp() {
    mktemp -t "$(basename "$0")".XXXXXXX
}

git_extra_default_branch() {
    local extras_default_branch init_default_branch
    extras_default_branch=$(git config --get git-extras.default-branch)
    init_default_branch=$(git config --get init.defaultBranch)
    if [ -n "$extras_default_branch" ]; then
        echo "$extras_default_branch"
    elif [ -n "$init_default_branch" ]; then
        echo "$init_default_branch"
    else
        echo "main"
    fi
}

_usage() {
    printf '%s\n' "usage: ${0##*/} <url>
usage: ${0##*/} --help

Clone a repository in a particular directory."
}

if (( $# == 0 )); then
    _usage
    exit 0
fi

for arg; do
    if [ "$arg" = '-h' ] || [ "$arg" = '--help' ]; then
        _usage
        exit 0
    fi
done

url=$1
if ! shift; then
    printf 'ERROR: Failed to shift' >&2
    exit 1
fi

clone_path=$(git config --get git-extras.get.clone-path)

if [ -z "$clone_path" ]; then
    printf 'ERROR: %s\n' "Git configuration key 'git-extras.get.clone-path' must be set to a directory to clone under" >&2
    exit 1
fi

dirname=${url%/}
dirname=${dirname%.git}
dirname=${dirname##*/}

mkdir -p "$clone_path"
git clone "$url" "$clone_path/$dirname" "$@"
