import os
import json


class Command:
    def __init__(self):
        self.command = ''


class Commands:
    def __init__(self, data_folder):
        self.filename = os.path.join(data_folder, 'commands.json')
        data = []
        try:
            with open(self.filename, 'r') as f:
                data = json.load(f)
        except FileNotFoundError:
            pass

        self.commands = []
        for c in data:
            cmd = Command()
            cmd.command = c
            self.commands.append(cmd)
        
    def get(self, command):
        for i, c in enumerate(self.commands):
            if command == c.command:
                return i
        return None
            
    def find(self, command):
        return self.commands[self.get(command=command)]


class Instruccion:
    def __init__(self):
        self.instruccion = ''
        self.aliases = []
        self.command = None
        self.params = {}


class Instrucciones:
    def __init__(self, data_folder):
        self.filename = os.path.join(data_folder, 'instrucciones.json')
        data = []
        try:
            with open(self.filename, 'r') as f:
                data = json.load(f)
        except FileNotFoundError:
            pass

        self.commands = Commands(data_folder)

        self.instrucciones = []
        for d in data:
            i = Instruccion()
            i.instruccion = d['name']
            if 'aliases' in d:
                for a in d['aliases']:
                    i.aliases.append(a)
            if 'params' in d:
                for param, val in d['params'].items():
                    i.params[param] = val
            if 'command' in d:
                i.command = self.commands.find(d['command'])
            self.instrucciones.append(i)

    def get(self, instruccion):
        if not self.is_valid(instruccion):
            return None
        for i, ins in enumerate(self.instrucciones):
            if instruccion == ins.instruccion:
                return i
            if instruccion in ins.aliases:
                return i

    def find(self, instruccion):
        if not self.is_valid(instruccion):
            return None
        return self.instrucciones[self.get(instruccion)]

    def is_valid(self, instruccion):
        for i in self.instrucciones:
            if instruccion == i.instruccion:
                return True
            if instruccion in i.aliases:
                return True
        return False

    def add(self, instruccion, aliases: list = None):
        if self.is_valid(instruccion):
            if aliases is not None:
                i = self.get(instruccion)
                self.instrucciones[i].aliases = aliases
            return
        ins = Instruccion()
        ins.instruccion = instruccion
        if aliases is not None:
            ins.aliases = aliases
        self.instrucciones.append(ins)

    def save(self):
        data = [{'instruccion': i.instruccion, 'aliases': i.aliases} for i in self.instrucciones]
        with open(self.filename, 'w') as f:
            json.dump(data, f, indent=4)