setupenv

#!/usr/bin/env bash

show_usage ()
{
    echo
    echo "Links dotfiles to your $HOME directory"
    echo
    echo "USAGE: $0 [-f] [--force]"
    echo
    echo "  force        Prevents confirmation prompt to override existing files"
    echo

    [ ! -z "$1" ] && exit $1
}

link_dotfiles ()
{
    local FILE

    if [ -z $1 ]
    then
        return
    fi

    pushd $1 > /dev/null

    for FILE in .*
    do
        if [[ "$FILE" == "." ]]
        then
            continue
        fi

        if [[ "$FILE" == ".." ]]
        then
            continue
        fi

        if [[ "$FILE" == ".git" ]]
        then
            continue
        fi

        if [[ "$FILE" == ".gitmodules" ]]
        then
            continue
        fi

        if [[ "$FILE" == ".ssh" ]]
        then
            # make our ~/.ssh if it doesn't exist
            mkdir -p $HOME/.ssh
            chmod 700 $HOME/.ssh

            # setup proper permissions
            [[ -e $HOME/.ssh/id_rsa ]] && chmod 600 $HOME/.ssh/id_rsa
            [[ -e $HOME/.ssh/id_ra.pub ]] && chmod 644 ~/.ssh/id_rsa.pub

            touch $HOME/.ssh/authorized_keys
            chmod 644 $HOME/.ssh/authorized_keys
            touch $HOME/.ssh/known_hosts
            chmod 644 $HOME/.ssh/known_hosts
            
            # copy any files
            cp -rfv $PWD/$FILE/* $HOME/$FILE/

            continue
        fi

        if [ -e "$FILE" ]
        then
            if [ -d "$HOME/$FILE" ]
            then
                rm -rf $HOME/$FILE
            fi
            ln -fsv $PWD/$FILE $HOME/$FILE
        fi
    done

    popd > /dev/null
}

if [ "$1" == "--help" ]
then
    show_usage 64
fi;

if [[ "$1" != "--force" && "$1" != "-f" ]]
then
    echo
    read -p "This may overwrite existing files in your home directory. Are you sure? (Y/n) " -n 1
    echo
    case $REPLY in
        "[Nn]*")
            exit 64
            ;;
    esac
fi

# Link dotfiles from this dir
link_dotfiles ${PWD}

# Copy bin files from this dir
if [ -d "./bin" ]
then
    cp -rfv ${PWD}/bin $HOME
fi

# Source platform specific profile
UNAME=$(uname)

case $UNAME in
    "")
        ;;
    "Darwin")
        PLATFORM=osx
        ;;
    "CYGWIN"*)
        PLATFORM=windows
        ;;
    "MINGW"*)
        PLATFORM=windows
        ;;
    *)
        PLATFORM="$(tr [A-Z] [a-z] <<< "$UNAME")"
        ;;
esac

if [ -d "$PLATFORM" ]
then
    pushd $PLATFORM > /dev/null

    # Link dotfiles from platform dir
    link_dotfiles ${PWD}

    # Run setupenv if exists
    if [ -x "./setupenv" ]
    then
        ./setupenv
    fi

    # Copy bin files from platform dir
    if [ -d "./bin" ]
    then
        cp -rfv ${PWD}/bin $HOME
    fi

    popd > /dev/null
fi