import psutil
import module

class Disk(module.BaseModule):

    def keys(self):
        return ["disk_usage_pct", "available_storage", "total_storage"]

    def get(self, key):
        if key == "disk_usage_pct":
            def disk_usage(path):
                return float(psutil.disk_usage(path).percent)/100
            return disk_usage
        elif key == "available_storage":
            def available_storage(path):
                return psutil.disk_usage(path).free
            return available_storage    
        elif key == "total_storage":
            def total_storage(path):
                return psutil.disk_usage(path).total
            return total_storage    
        else:
            raise KeyError()