#!/bin/sh

set -e

if [ $# -eq 0 ]; then
    echo "No arguments provided. Aborting..."
    exit 1
fi

if [ "$1" = "-h" ] || [ "$1" = "--help" ]; then
    echo "usage: ./getsauce.sh [-h] [mode <URL|repoName> [checkout]]

Retrieves the source for you.

Possible values for the arguments:

mode      git, github-tar
URL       url of the repo
repoName  name of the repo with user/org included (e.g. username/repo or organization/repo)
checkout  tag, branch or complete hash of a commit

Dependencies: curl jq ca-certificates git
"
    exit 0
fi

if [ $# -lt 3 ]; then
    echo "Arguments \"mode\" and \"URL/repoName\" not provided. Aborting..."
    exit 1
fi


GET_SRC_MODE=$1
URL_REPONAME=$2
[ ! -z ${3+x} ] && CHECKOUT=$3
[ -z ${REPO_PATH+x} ] && REPO_PATH="project"
SRC_DIR_PATH="./"
TMP_DIR="tmp_extract"

if [ $GET_SRC_MODE = "github-tar" ]; then
    mkdir "${TMP_DIR}"
    curl --silent --fail -L "https://api.github.com/repos/${URL_REPONAME}/tarball/${CHECKOUT}" -o - | tar xvz -f - -C "$SRC_DIR_PATH" || rm -rf "${TMP_DIR}" && exit 1
    mv "${TMP_DIR}"/* "${REPO_PATH}/"
elif [ $GET_SRC_MODE = "git" ]; then
    TMP_POSITION="${PWD}"
    git clone "${URL_REPONAME}" "${REPO_PATH}"
    cd "${REPO_PATH}"
    [ ! -z ${CHECKOUT+x} ] && git checkout "${CHECKOUT}"
    cd "${TMP_POSITION}"
else
    echo "Not valid mode"
    exit 1
fi