import argparse
from typing import Dict, List

import yaml


LANGUAGES = {
    "bn": {  # Bengali
        "QUESTION": "\u09aa\u09cd\u09b0\u09b6\u09cd\u09a8:",
        "ANSWER": "\u09a7\u09be\u09aa\u09c7 \u09a7\u09be\u09aa\u09c7 \u0989\u09a4\u09cd\u09a4\u09b0:",
    },
    "de": {  # German
        "QUESTION": "Frage:",
        "ANSWER": "Schritt-f\u00fcr-Schritt-Antwort:",
    },
    "en": {  # English
        "QUESTION": "Question:",
        "ANSWER": "Step-by-Step Answer:",
    },
    "es": {  # Spanish
        "QUESTION": "Pregunta:",
        "ANSWER": "Respuesta paso a paso:",
    },
    "fr": {  # French
        "QUESTION": "Question :",
        "ANSWER": "R\u00e9ponse \u00e9tape par \u00e9tape :",
    },
    "ru": {  # Russian
        "QUESTION": "\u0417\u0430\u0434\u0430\u0447\u0430:",
        "ANSWER": "\u041f\u043e\u0448\u0430\u0433\u043e\u0432\u043e\u0435\u0440\u0435\u0448\u0435\u043d\u0438\u0435:",
    },
    "sw": {  # Swahili
        "QUESTION": "Swali:",
        "ANSWER": "Jibu la Hatua kwa Hatua:",
    },
    "te": {  # Telugu
        "QUESTION": "\u0c2a\u0c4d\u0c30\u0c36\u0c4d\u0c28:",
        "ANSWER": "\u0c26\u0c36\u0c32\u0c35\u0c3e\u0c30\u0c40\u0c17\u0c3e \u0c38\u0c2e\u0c3e\u0c27\u0c3e\u0c28\u0c02:",
    },
    "th": {  # Thai
        "QUESTION": "\u0e42\u0e08\u0e17\u0e22\u0e4c:",
        "ANSWER": "\u0e04\u0e33\u0e15\u0e2d\u0e1a\u0e17\u0e35\u0e25\u0e30\u0e02\u0e31\u0e49\u0e19\u0e15\u0e2d\u0e19:",
    },
    "ja": {  # Japanese
        "QUESTION": "\u554f\u984c:",
        "ANSWER": "\u30b9\u30c6\u30c3\u30d7\u3054\u3068\u306e\u7b54\u3048:",
    },
    "zh": {  # Chinese
        "QUESTION": "\u95ee\u9898:",
        "ANSWER": "\u9010\u6b65\u89e3\u7b54:",
    },
}

def doc_to_text(doc, QUESTION, ANSWER):
    if doc["answer"] is not None:
        return doc["question"] + "\n" + ANSWER
    else:
        return QUESTION + " " + doc["question"] + "\n" + ANSWER

def doc_to_target(doc, QUESTION, ANSWER):
    if doc["answer"] is not None:
        return " " + doc["answer"][len(ANSWER) + 1 :]
    else:
        return " " + str(doc["answer_number"])


def gen_lang_yamls(output_dir: str, overwrite: bool) -> None:
    """
    Generate a yaml file for each language.

    :param output_dir: The directory to output the files to.
    :param overwrite: Whether to overwrite files if they already exist.
    """
    err = []
    for lang in LANGUAGES.keys():
        file_name = f"mgsm_{lang}.yaml"
        try:
            QUESTION = LANGUAGES[lang]["QUESTION"]
            ANSWER = LANGUAGES[lang]["ANSWER"]
            with open(
                f"{output_dir}/{file_name}", "w" if overwrite else "x", encoding="utf8"
            ) as f:
                f.write("# Generated by utils.py\n")
                yaml.dump(
                    {
                        "include": "common_template_yaml",
                        "dataset_name": lang,
                        "task": f"mgsm_{lang}",
                        "doc_to_text": doc_to_text(doc, QUESTION, ANSWER),
                        "doc_to_target": doc_to_target(doc, QUESTION, ANSWER),
                    },
                    f,
                    allow_unicode=True,
                )
        except FileExistsError:
            err.append(file_name)

    if len(err) > 0:
        raise FileExistsError(
            "Files were not created because they already exist (use --overwrite flag):"
            f" {', '.join(err)}"
        )


def main() -> None:
    """Parse CLI args and generate language-specific yaml files."""
    parser = argparse.ArgumentParser()
    parser.add_argument(
        "--overwrite",
        default=False,
        action="store_true",
        help="Overwrite files if they already exist",
    )
    parser.add_argument(
        "--output-dir", default=".", help="Directory to write yaml files to"
    )
    args = parser.parse_args()

    gen_lang_yamls(output_dir=args.output_dir, overwrite=args.overwrite)


if __name__ == "__main__":
    main()