#!/bin/bash

repo_name="$1"
repo_dir="../../$2"
git_url="$3"
branch=$4

if [ -d "$repo_dir" ];then
    cd $repo_dir

    if [ -n "$branch" ]; then
        cur_branch=$(git branch --show-current)
        echo "current branch: $cur_branch"
        echo "target branch: $branch"
        if [ "$cur_branch" != "$branch" ]; then
            echo "checkout to branch: $branch"
            git checkout $branch || true
        fi
    fi

    git pull --rebase || true
else
    git clone $git_url $repo_dir
    if [ -n "$branch" ]; then
        echo "checkout to branch: $branch"
        git checkout $branch || true
    fi
fi