regolith-look

#!/bin/bash
# This is a helper script to perform common tasks with regolith looks.

if [ "$#" -lt 1 ]; then
    echo "Usage: regolith-look <command>"
    echo "Actions: "
    echo "    refresh - Update the current session look based on Xresources values"
    echo "    list - Display currently installed looks in the /etc/regolith/styles directory"
    echo "    stage - Copy Xresource and i3 config files in the user directory"
    echo "    set <look> - Write a global override file in the user dir to specify the desired look"
    exit 1
fi

COMMAND=$1

refresh() {
    # File Locations - Optional User Overrides
    USER_XRESOURCE_FILE="$HOME/.Xresources-regolith"
    USER_XRESOURCE_OVERRIDE_FILE="$HOME/.config/regolith/Xresources"
    USER_XRESOURCE_SEARCH_PATH="$HOME/.config/regolith/Xresources.d"

    # File Locations - System Defaults
    DEFAULT_XRESOURCE_FILE="/etc/regolith/styles/root"

    if [ ! -f "$USER_XRESOURCE_FILE" ]; then
        xrdb -merge $DEFAULT_XRESOURCE_FILE
    else
        # Avoid loading an early version of the Regolith Xresource file
        BAD_XRES_HASH="6797c718fc4767653878ef9db5f68017"
        HASH=$(md5sum $USER_XRESOURCE_FILE | cut -d " " -f1)
        if [ -f "$USER_XRESOURCE_FILE" -a "$HASH" != "$BAD_XRES_HASH" ]; then
            xrdb -I$USER_XRESOURCE_SEARCH_PATH -merge $USER_XRESOURCE_FILE
        else
            xrdb -merge $DEFAULT_XRESOURCE_FILE
        fi
    fi

    # Check for user overrides of Xresources
    if [ -f "$USER_XRESOURCE_OVERRIDE_FILE" ]; then
        xrdb -I$USER_XRESOURCE_SEARCH_PATH -merge $USER_XRESOURCE_OVERRIDE_FILE
    fi

    # Change the quotes in workspace names from double to to single.
    # Due to a limitation of the preprocessor they have double quotes.
    # The i3-wm workspace command fails with double quotes in the name
    xrdb -query | grep i3-wm.workspace. | sed "s/\"/'/g" | xrdb -merge

    # Set the theme from Xresources values.
    gsettings set org.gnome.desktop.interface gtk-theme "`xrescat gnome.gtk.theme Adwaita`"
    gsettings set org.gnome.desktop.wm.preferences theme "`xrescat gnome.wm.theme Adwaita`"
    gsettings set org.gnome.desktop.interface icon-theme "`xrescat gnome.icon.theme Adwaita`"

    # Set the wallpaper
    WALLPAPER_FILE=$(xrescat gnome.wallpaper)
    if [[ ! -z $WALLPAPER_FILE ]]; then
        gsettings set org.gnome.desktop.background picture-uri "file://$(eval echo $WALLPAPER_FILE)"
    fi

    if hash gnome-terminal 2>/dev/null; then # Check if gnome-terminal is on the path
        UPDATE_TERM_FLAG=$(xrescat gnome.terminal.update true)
        if [[ "$UPDATE_TERM_FLAG" == "true" && -f "/usr/bin/create-regolith-term-profile" ]] ; then
            /usr/bin/create-regolith-term-profile
        fi
    fi

    # restart i3-wm after merging Xresources
    i3-msg -q restart
}

stage() {
    mkdir -p $HOME/.config/regolith/i3
    cp -b /etc/regolith/i3/config $HOME/.config/regolith/i3/
    cp -b /etc/regolith/styles/root $HOME/.Xresources-regolith

    echo "Files $HOME/.config/regolith/i3/config and $HOME/.Xresources-regolith have been created, log back in for them to take effect."
}

set_look() {
    XRES_ROOT_FILE="$HOME/.Xresources-regolith"
    if [ -f "$XRES_ROOT_FILE" ]; then
        BACKUP_FILE="/tmp/Xresources-regolith-$(date +%s)"
        mv $XRES_ROOT_FILE $BACKUP_FILE
        echo "Note: Regolith Xresources file $XRES_ROOT_FILE already exists, moved previous copy to $BACKUP_FILE."
    fi

    if [ -f "/etc/regolith/styles/$LOOK/root" ]; then
        echo "#include \"/etc/regolith/styles/$LOOK/root\"" > $HOME/.Xresources-regolith
        echo "Created $XRES_ROOT_FILE pointing to $LOOK."
    else
        echo "Look $LOOK does not exist or export a root file at /etc/regolith/styles/$LOOK/root, aborting."
        exit 1
    fi
}

if [ "$COMMAND" == "refresh" ]; then
    refresh
elif [ "$COMMAND" == "stage" ]; then
    stage
elif [ "$COMMAND" == "set" ]; then
    LOOK=$2
    if [ -z $LOOK ]; then
        echo "Must specify a look to set."
        exit 1
    else
        set_look
    fi
elif [ "$COMMAND" == "list" ]; then
    find /etc/regolith/styles/ -maxdepth 1 -mindepth 1 -type d -printf '%f\n' | sort
else
    echo "Unrecognized command: $COMMAND"
    exit 1
fi