#!/bin/sh

removeohmyzsh()
{
    rm -rf ~/.oh-my-zsh
}

installdeps()
{

    #dependencies
    readonly deps="git zsh vim curl wget"

    #check for dependencies
    missingdeps=""
    i=0
    for dep in $deps; do
        if [ $(command -v $dep > /dev/null; echo $?) -ne "0" ]; then
            missingdeps="$missingdeps $dep"
            i=$((i+1))
        fi
    done

    #try to install unmet dependencies
    if [ $i -ne 0  ]; then

        #checking for system
        readonly systems="ubuntu arch"
        issue="$(cat /etc/issue)"
        for item in $systems; do
            echo $issue | grep -i $item
            if [ $? -eq 0 ]; then
                system=$item
            fi
        done

        case $system in
            ubuntu)
                sudo apt-get update && sudo apt-get install -y $missingdeps
                ;;
            arch)
                sudo pacman -Su $missingdeps
                ;;
            ?)
                echo "unknown system. could not install anything"
                ;;
        esac

    fi

}


installmyzsh()
{

    rm -rf ~/.myzsh
    choice="null"
    while [ $choice != "y" ] && [ $choice != "n" ]; do
        echo ""
        read -p "should i clone myzsh writeable? [y/n]" choice
        if [ $choice = "y" ]; then
            git clone git@github.com:beyondthewall/myzsh.git ~/.myzsh
        else
            git clone https://github.com/beyondthewall/myzsh.git ~/.myzsh
        fi
    done
    echo 'ZSH="$HOME/.myzsh"' > ~/.zshrc
    echo 'THEME="david"' >> ~/.zshrc
    echo 'plugins=(david)' >> ~/.zshrc
    echo 'source $ZSH/myzsh.sh' >> ~/.zshrc
    echo "export PATH=$PATH" >> ~/.zshrc
#    read -p "now modify your ~/.zshrc to your needs"
#    vim ~/.zshrc

    cat /etc/passwd | grep ~ | grep "/bin/zsh"
    #set default shell if not set already
    if [ $? -eq 1 ]; then
        read -p "time to change your default shell to /bin/zsh"
        sudo vim /etc/passwd
    fi


}

#start of script


if [ -d ~/.myzsh ]; then
    echo ""
    echo "skipping myzsh installation. it is already there."
    echo ""
    read -p "do you want to cleanup and reinstall? [y/n]" choice
    if [ $choice = "y" ]; then
        installdeps
        removeohmyzsh
        installmyzsh
    else
        echo "updating instead..."
        cd ~/.myzsh
        git pull origin master
        cd -
    fi
else
    installdeps
    removeohmyzsh
    installmyzsh
fi

#end of script
exit 0