setup

#!/bin/bash

detect_shell() {
    if [ -n "${ZSH_VERSION}" ]; then
        echo "zsh"
    elif [ -n "${BASH_VERSION}" ]; then
        echo "bash"
    elif [ -n "${FISH_VERSION}" ]; then
        echo "fish"
    else
        echo "<unknown>"
    fi
}

SCRIPT_DIRECTORY="$(readlink -e "$(dirname "${BASH_SOURCE[0]}")")"
perform_uninstall() {
    if [[ -d "$HOME/.old_scripts" ]]; then
    echo "Starting uninstall"
    
    if [[ $(detect_shell) = "zsh" ]]; then
        rm "$HOME/.zprofile"
        rm "$HOME/.zlogout"
        rm "$HOME/.zshrc"
        rm "$HOME/.zshenv"

        cp "$HOME/.old_scripts/.z*" "$HOME"
        find "$HOME/.old_scripts" -name ".z*" -mindepth 1 -delete
        if [ -z "$(ls -A "$HOME/.old_scripts")" ]; then
            rm -r "$HOME/.old_scripts"

        fi
    elif [[ $(detect_shell) = "bash" ]]; then
        rm "$HOME/.bashrc"
        rm "$HOME/.bash_profile"
        rm "$HOME/.bash_logout"
        rm "$HOME/.profile"

        cp "$HOME/.old_scripts/.bash"* "$HOME"
        cp "$HOME/.old_scripts/.profile" "$HOME"
        rm -r "$HOME/.old_scripts"
    fi

    rm "$HOME/.mytheme.omp.json"
    rm "$HOME/.clang-format"

    echo "Finished uninstall"
else
    echo "Nothing to uninstall"
    fi
}

perform_install() {
    echo "Starting install"

    if [[ $OSTYPE = "darwin" ]] ; then
        source ./preinstall/mac
    elif [[ $OSTYPE = "linux-gnu" ]] ; then
        source ./preinstall/linux
    fi

    hash -r

    cp "$SCRIPT_DIRECTORY/configs/.mytheme.omp.json" "$HOME/"
    cp "$SCRIPT_DIRECTORY/configs/clang-format.template" "$HOME/"
    mv "$HOME/clang-format.template" "$HOME/.clang-format"

    mkdir "$HOME/.old_scripts"

    if [[ $(detect_shell) = "zsh" ]]; then
        mv "$HOME/.zshenv" "$HOME/.old_scripts/.zshenv" \
           && echo "source \"$HOME/.old_scripts/.zshenv\"" > "$HOME/.zshenv"
        mv "$HOME/.zprofile" "$HOME/.old_scripts/.zprofile" \
           && echo "source \"$HOME/.old_scripts/.zprofile\"" > "$HOME/.zprofile"
        mv "$HOME/.zshrc" "$HOME/.old_scripts/.zshrc" \
           && echo "source \"$HOME/.old_scripts/.zshrc\"" > "$HOME/.zshrc"
        mv "$HOME/.zlogout" "$HOME/.old_scripts/.zlogout" \
           && echo "source \"$HOME/.old_scripts/.zlogout\"" > "$HOME/.zlogout"

        mv "$HOME/.zlogin" "$HOME/.old_scripts/.zlogin"
        if [ ! -f "$HOME/.zprofile" ] && [ -f "$HOME/.old_scripts/.zlogin" ]; then
            echo "source \"$HOME/.old_scripts/.zlogin\"" > "$HOME/.zprofile"
        fi

        touch "$HOME/.zshenv"
        touch "$HOME/.zprofile"
        touch "$HOME/.zshrc"
        touch "$HOME/.zlogout"

        echo "source \"$SCRIPT_DIRECTORY/sys_scripts/env_zsh\"" >> "$HOME/.zshenv"
        echo "source \"$SCRIPT_DIRECTORY/sys_scripts/login_zsh\"" >> "$HOME/.zprofile"
        echo "source \"$SCRIPT_DIRECTORY/sys_scripts/interactive_zsh\"" >> "$HOME/.zshrc"
        echo "source \"$SCRIPT_DIRECTORY/sys_scripts/logout_zsh\"" >> "$HOME/.zlogout"

	cat <(echo "SCRIPT_DIRECTORY=$SCRIPT_DIRECTORY") "$HOME/.zshenv" > "$HOME/.zshenv_tmp" \
           && mv "$HOME/.zshenv_tmp" "$HOME/.zshenv"

	cat <(echo "SCRIPT_DIRECTORY=$SCRIPT_DIRECTORY") "$HOME/.zprofile" > "$HOME/.zprofile_tmp" \
           && mv "$HOME/.zprofile_tmp" "$HOME/.zprofile"

	cat <(echo "SCRIPT_DIRECTORY=$SCRIPT_DIRECTORY") "$HOME/.zshrc" > "$HOME/.zshrc_tmp" \
           && mv "$HOME/.zshrc_tmp" "$HOME/.zshrc"

	cat <(echo "SCRIPT_DIRECTORY=$SCRIPT_DIRECTORY") "$HOME/.zlogout" > "$HOME/.zlogout_tmp" \
           && mv "$HOME/.zlogout_tmp" "$HOME/.zlogout"

    elif [[ $(detect_shell) = "bash" ]]; then
        mv "$HOME/.bash_profile" "$HOME/.old_scripts/.bash_profile" \
           && echo "source \"$HOME/.old_scripts/.bash_profile\"" > "$HOME/.bash_profile"
        mv "$HOME/.bashrc" "$HOME/.old_scripts/.bashrc" \
           && echo "source \"$HOME/.old_scripts/.bashrc\"" > "$HOME/.bashrc"
        mv "$HOME/.profile" "$HOME/.old_scripts/.profile" \
           && echo "source $HOME/.old_scripts/.profile"
        mv "$HOME/.bash_logout" "$HOME/.old_scripts/.bash_logout" \
           && echo "source \"$HOME/.old_scripts/.bash_logout\"" > "$HOME/.bash_logout"

        mv "$HOME/.bash_login" "$HOME/.old_scripts/.bash_login"
        if [ ! -f "$HOME/.bash_profile" ] && [ -f "$HOME/.old_scripts/.bash_login" ]; then
            echo "source \"$HOME/.old_scripts/.bash_login\"" > "$HOME/.bash_profile"
        fi

        touch "$HOME/.bash_profile"
        touch "$HOME/.bashrc"
        touch "$HOME/.bash_logout"
        touch "$HOME/.profile"

        {
            echo "if [[ -z \$USERSCRIPTS_ENV_LOADED ]] || [[ \$USERSCRIPTS_ENV_LOADED = 0 ]]; then"
            echo "    source \"$SCRIPT_DIRECTORY/sys_scripts/env_bash\""
            echo "    USERSCRIPTS_ENV_LOADED=1"
            echo "fi"
        } >> "$HOME/.bash_profile"
        {
            echo "if [[ -z \$USERSCRIPTS_ENV_LOADED ]] || [[ \$USERSCRIPTS_ENV_LOADED = 0 ]]; then"
            echo "    source \"$SCRIPT_DIRECTORY/sys_scripts/env_bash\""
            echo "    USERSCRIPTS_ENV_LOADED=1"
            echo "fi"
        } >> "$HOME/.bashrc"

        echo "source \"$SCRIPT_DIRECTORY/sys_scripts/login_bash\"" >> "$HOME/.bash_profile"
	echo "[[ \$- = *i* ]] && source \"\$HOME/.bashrc\"" >> "$HOME/.bash_profile"

        echo "source \"$SCRIPT_DIRECTORY/sys_scripts/interactive_bash\"" >> "$HOME/.bashrc"

        echo "source \"$SCRIPT_DIRECTORY/sys_scripts/profile_bash\"" >> "$HOME/.profile"

        echo "source \"$SCRIPT_DIRECTORY/sys_scripts/logout_bash\"" >> "$HOME/.bash_logout"

	cat <(echo "SCRIPT_DIRECTORY=$SCRIPT_DIRECTORY") "$HOME/.bash_profile" > "$HOME/.bash_profile_tmp" \
           && mv "$HOME/.bash_profile_tmp" "$HOME/.bash_profile"

	cat <(echo "SCRIPT_DIRECTORY=$SCRIPT_DIRECTORY") "$HOME/.bashrc" > "$HOME/.bashrc_tmp" \
           && mv "$HOME/.bashrc_tmp" "$HOME/.bashrc"

	cat <(echo "SCRIPT_DIRECTORY=$SCRIPT_DIRECTORY") "$HOME/.bash_logout" > "$HOME/.bash_logout_tmp" \
           && mv "$HOME/.bash_logout_tmp" "$HOME/.bash_logout"

	cat <(echo "SCRIPT_DIRECTORY=$SCRIPT_DIRECTORY") "$HOME/.profile" > "$HOME/.profile_tmp" \
           && mv "$HOME/.profile_tmp" "$HOME/.profile"
    elif [[ $(detect_shell) = "fish" ]]; then
        echo "Unsupported"
        # TODO: Handle startup scripts
    elif [[ $(detect_shell) = "csh" ]]; then
        echo "Unsopported"
        # TODO: Handle startup scripts
    fi

}

perform_reinstall() {
    perform_uninstall
    perform_install
}

perform_reinstall