#!/usr/bin/env bash


install() {
    mkdir -p ~/local/src
    cd ~/local/src

    git clone https://github.com/pyenv/pyenv.git
    cd pyenv
}

upgrade_or_install() {
    git fetch --tags
    latestTag=$(git describe --tags `git rev-list --tags --max-count=1`)
    git checkout $latestTag

    echo '>> src/configure && make -C src'
    src/configure && make -C src
    if ! [ $? -eq 0 ]; then
        echo Previous command failed
        read 'Quit? [Y/n] '
        if ! [ "$REPLY" -eq n ]; then
            exit 1
        fi
        echo Wow, really? ok then
    fi
}


if ! command -v pyenv &> /dev/null; then
    install && upgrade_or_install
else
    # Upgrade pyenv
    echo Pyenv is already installed, attempting to upgrade it
    path=$(which pyenv)
    if ! [[ $path = "$HOME/local/src/pyenv/bin/pyenv" ]]; then
        echo Unknown installation method
        exit 1
    fi
    cd ~/local/src/pyenv
    git pull

    upgrade_or_install
fi

echo ----------------------------
echo Should be good to go
echo Run '`dot setup fish` to update the PATHs again if needed'
echo Then run this:
cat <<END
status is-login; and pyenv init --path | source
status is-interactive; and pyenv init - | source
END