#!/bin/sh

THEME='tomorrow'
VARIANT='dark'

CONFIG_LOCS="/etc/default/base16"
. /etc/default/base16

if [ -e "$HOME/.config/base16.conf" ]; then
    . $HOME/.config/base16.conf
    CONFIG_LOCS+=" $HOME/.config/base16.conf"
fi

if [ -n "$XDG_CONFIG_HOME" ] && [ -e "$XDG_CONFIG_HOME/base16.conf" ]; then
    . $XDG_CONFIG_HOME/base16.conf
    CONFIG_LOCS+="$XDG_CONFIG_HOME/base16.conf"
fi

BASEDIR="/usr/share/base16"

# Perform validity checks on themes
if [ -z $(cat $BASEDIR/index | grep $THEME) ]; then
    echo "Theme $THEME does not exist! Check one of: $CONFIG_LOCS"
    exit 2
fi

case "$VARIANT" in
    light|dark)
        ;;
    *)
        echo "Variant must be either light or dark! You provided $VARIANT"
        exit 2
        ;;
esac


# Now we get to the actual input
if [ $# -lt 2 ]; then
    echo "Not enough arguments! Usage: $0 <template> <extension>"
    exit 1
fi

TEMPLATE=$1
EXTENSION="$2"

if [ ! -d "$BASEDIR/$TEMPLATE" ]; then
    echo "Template $TEMPLATE is not valid. Valid templates are ${/opt/base16/*}"
    exit 2
fi

FILE="$BASEDIR/$TEMPLATE/base16-${THEME}.${VARIANT}.${EXTENSION}"

# Handle some formats where the editor controls variant, like vim. This might warrant extra handling in the future (for editor configs?)
NOVARIANT_FILE="$BASEDIR/$TEMPLATE/base16-$THEME.$EXTENSION"

if [ ! -e "$FILE" ]; then
    if [ -e "$NOVARIANT_FILE" ]; then
        echo $NOVARIANT_FILE
    else
        echo "File $FILE does not exist. Check theme, variant, and extension!"
        exit 2
    fi
else
    echo $FILE
fi