import logging from pathlib import Path from typing import Any, Dict from questionary import Separator, prompt from freqtrade.constants import UNLIMITED_STAKE_AMOUNT from freqtrade.exchange import available_exchanges, MAP_EXCHANGE_CHILDCLASS from freqtrade.misc import render_template from freqtrade.exceptions import OperationalException logger = logging.getLogger(__name__) def validate_is_int(val): try: _ = int(val) return True except Exception: return False def validate_is_float(val): try: _ = float(val) return True except Exception: return False def ask_user_overwrite(config_path: Path) -> bool: questions = [ { "type": "confirm", "name": "overwrite", "message": f"File {config_path} already exists. Overwrite?", "default": False, }, ] answers = prompt(questions) return answers['overwrite'] def ask_user_config() -> Dict[str, Any]: """ Ask user a few questions to build the configuration. Interactive questions built using https://github.com/tmbo/questionary :returns: Dict with keys to put into template """ questions = [ { "type": "confirm", "name": "dry_run", "message": "Do you want to enable Dry-run (simulated trades)?", "default": True, }, { "type": "text", "name": "stake_currency", "message": "Please insert your stake currency:", "default": 'BTC', }, { "type": "text", "name": "stake_amount", "message": "Please insert your stake amount:", "default": "0.01", "validate": lambda val: val == UNLIMITED_STAKE_AMOUNT or validate_is_float(val), }, { "type": "text", "name": "max_open_trades", "message": f"Please insert max_open_trades (Integer or '{UNLIMITED_STAKE_AMOUNT}'):", "default": "3", "validate": lambda val: val == UNLIMITED_STAKE_AMOUNT or validate_is_int(val) }, { "type": "text", "name": "ticker_interval", "message": "Please insert your timeframe (ticker interval):", "default": "5m", }, { "type": "text", "name": "fiat_display_currency", "message": "Please insert your display Currency (for reporting):", "default": 'USD', }, { "type": "select", "name": "exchange_name", "message": "Select exchange", "choices": [ "binance", "binanceje", "binanceus", "bittrex", "kraken", Separator(), "other", ], }, { "type": "autocomplete", "name": "exchange_name", "message": "Type your exchange name (Must be supported by ccxt)", "choices": available_exchanges(), "when": lambda x: x["exchange_name"] == 'other' }, { "type": "password", "name": "exchange_key", "message": "Insert Exchange Key", "when": lambda x: not x['dry_run'] }, { "type": "password", "name": "exchange_secret", "message": "Insert Exchange Secret", "when": lambda x: not x['dry_run'] }, { "type": "confirm", "name": "telegram", "message": "Do you want to enable Telegram?", "default": False, }, { "type": "password", "name": "telegram_token", "message": "Insert Telegram token", "when": lambda x: x['telegram'] }, { "type": "text", "name": "telegram_chat_id", "message": "Insert Telegram chat id", "when": lambda x: x['telegram'] }, ] answers = prompt(questions) if not answers: # Interrupted questionary sessions return an empty dict. raise OperationalException("User interrupted interactive questions.") return answers def deploy_new_config(config_path: Path, selections: Dict[str, Any]) -> None: """ Applies selections to the template and writes the result to config_path :param config_path: Path object for new config file. Should not exist yet :param selecions: Dict containing selections taken by the user. """ from jinja2.exceptions import TemplateNotFound try: exchange_template = MAP_EXCHANGE_CHILDCLASS.get( selections['exchange_name'], selections['exchange_name']) selections['exchange'] = render_template( templatefile=f"subtemplates/exchange_{exchange_template}.j2", arguments=selections ) except TemplateNotFound: selections['exchange'] = render_template( templatefile=f"subtemplates/exchange_generic.j2", arguments=selections ) config_text = render_template(templatefile='base_config.json.j2', arguments=selections) logger.info(f"Writing config to `{config_path}`.") config_path.write_text(config_text) def start_new_config(args: Dict[str, Any]) -> None: """ Create a new strategy from a template Asking the user questions to fill out the templateaccordingly. """ config_path = Path(args['config'][0]) if config_path.exists(): overwrite = ask_user_overwrite(config_path) if overwrite: config_path.unlink() else: raise OperationalException( f"Configuration file `{config_path}` already exists. " "Please delete it or use a different configuration file name.") selections = ask_user_config() deploy_new_config(config_path, selections)