#!/usr/bin/env python3
# -*- coding: utf-8 -*-
"""
Created on Fri Sep 27 14:35:31 2019

@author: Guido Longoni - guidolongoni@gmail.com
"""
import commands as cmd
import types
import copy
import functools
import re

def _cmdString(cmdName, **cmdArgs):
	cmdDict = cmd.MKPcommands[cmdName]
	if 'args' in cmdDict and cmdDict['args'] is not None:
		mandatory_args = set(cmdDict['args'])
	else:
		mandatory_args = set()
	if 'optArgs' in cmdDict and cmdDict['optArgs'] is not None:
		optional_args = set(cmdDict['optArgs'])
	else:
		optional_args = set()
	my_args = set(cmdArgs.keys())
	if len(my_args) < len(mandatory_args) or my_args.intersection(mandatory_args) != my_args:
		raise ValueError('Argomenti obbligatori errati o mancanti.')
	if len(my_args-mandatory_args-optional_args) > 0:
		raise Warning('Forniti argomenti sconosciuti!')
	argDict = { ** { a: cmdArgs[a] for a in mandatory_args},
			   ** { a: cmdArgs[a] if a in my_args else '' for a in optional_args} }
	command = cmdDict['command']
	arg_groups = [i.group(1) for i in re.finditer(r'[^;]((\{[^}]*\};)+\{[^}]*\})[^;]',command)]
	replacements = [(g,';'.join([a.format(**argDict) for a in g.split(';') if len(a.format(**argDict)) > 0])) for g in arg_groups]
	command = functools.reduce(lambda x,y: x.replace(y[0],y[1]),replacements,command).format(**argDict)
	return str(cmd.DEFprefix['begin'] if cmdDict['defPrefix'] else cmdDict['begin']) \
		+ command \
		+ str(cmd.DEFprefix['end']
			  if cmdDict['defPrefix'] else cmdDict['end'])

def _checkError(cmdName, response):
	errKey = 'error'
	cmdDict = cmd.MKPcommands[cmdName]
	if errKey in cmdDict and cmdDict[errKey] is not None:
		return None
	error_codes = re.match(cmdDict[errKey], response, re.I)
	if error_codes:
		return error_codes.groups()
	return None

def _checkResponse(cmdName, response):
	sucKey = 'success'
	cmdDict = cmd.MKPcommands[cmdName]
	if sucKey in cmdDict and cmdDict[sucKey] is not None:
		if cmdDict[sucKey] == True:
			error = _checkError(cmdName, response)
			if error is None:
				return None
			else:
				return error
		if re.match(cmdDict[sucKey], response, re.I):
			return True
		error = _checkError(cmdName, response)
		if error is None:
			raise NotImplementedError(
				'Ricevuta risposta sconosciuta: {}'.format(response))
		else:
			return error
	else:
		error = _checkError(cmdName, response)
		return error

_cloneFcn = lambda f1,f2: types.FunctionType(copy.copy(f1.__code__), copy.copy(f1.__globals__), name=f2, argdefs=copy.copy(f1.__defaults__), closure=copy.copy(f1.__closure__))
for k in cmd.MKPcommands.keys():
	globals()[k] = functools.partial(_cloneFcn(_cmdString,k),k)
del k