#!/usr/bin/env sh

if [ $# -lt 1 ]
then
    echo "usage: $0 plugin-name"
    echo "  This command generates a file at src/plugins/plugin-name.py, containing the base of a rollbot plugin."
    echo "  The plugin-name must be a valid python identifier, and ideally should only be composed of lowercase letters and underscores"
    exit 1
fi

if ! [[ "$1" =~ ^[a-z][a-z_]*$ ]]
then
    echo "Plugin names should be composed entirely of lowercase letters and underscores"
    exit 1
fi

PLUGIN_FILE="./src/plugins/$1.py"

if [[ -f $PLUGIN_FILE ]]
then
    echo "Plugin module with this name already exists - pick a new module name. You can always bind it to a different command word later!"
    exit 1
fi

echo "Populating $PLUGIN_FILE with basic plugin called $1"

echo "from rollbot import as_plugin" >> $PLUGIN_FILE
echo "" >> $PLUGIN_FILE
echo "" >> $PLUGIN_FILE
echo "@as_plugin" >> $PLUGIN_FILE
echo "def $1():" >> $PLUGIN_FILE
echo "    return \"Hello, world!\"" >> $PLUGIN_FILE

echo "import plugins.$1" >> ./src/plugins/__init__.py

echo "Done! Plugin is ready for you to edit at $PLUGIN_FILE, you do not need to modify any configuration!"