import argparse
import os

import yaml


def prompt_func(mode, lang):
    prompt_map = {
        "prompt_1": "P: {{story}}\nQ: {{question.strip()}}\nA: {{options_A}}\nB: {{options_B}}\nC: {{options_C}}\nD: {{options_D}}\nPlease choose the correct answer from the options above:",
        "prompt_2": "Passage: {{story}}\nQuestion: {{question.strip()}}\n1: {{options_A}}\n2: {{options_B}}\n3: {{options_C}}\n4: {{options_D}}\nPlease select the correct answer from the given choices:",
        "prompt_3": "Context: {{story}}\nQuery: {{question.strip()}}\nOption A: {{options_A}}\nOption B: {{options_B}}\nOption C: {{options_C}}\nOption D: {{options_D}}\nPlease indicate the correct option from the list above:",
        "prompt_4": "{{story}}\nBased on the above passage, answer the following question:\n{{question.strip()}}\nChoices:\nA) {{options_A}}\nB) {{options_B}}\nC) {{options_C}}\nD) {{options_D}}\nPlease provide the correct answer from the choices given:",
        "prompt_5": "Read the passage: {{story}}\nThen answer the question: {{question.strip()}}\nOptions:\nA. {{options_A}}\nB. {{options_B}}\nC. {{options_C}}\nD. {{options_D}}\nPlease choose the correct option from the above list:",
    }
    return prompt_map[mode]


def gen_lang_yamls(output_dir: str, overwrite: bool, mode: str) -> 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 = []
    languages = {
        "hau": "Hausa",
        "ibo": "Igbo",
        "yor": "Yoruba",
    }

    for lang in languages.keys():
        try:
            file_name = f"naijarc_{lang}.yaml"
            task_name = f"naijarc_{lang}_{mode}"
            yaml_template = "naijarc"
            yaml_details = {
                "include": yaml_template,
                "task": task_name,
                "dataset_name": lang,
                "doc_to_text": prompt_func(mode, languages[lang]),
            }
            file_path = os.path.join(output_dir, mode)
            os.makedirs(file_path, exist_ok=True)

            with open(
                f"{output_dir}/{mode}/{file_name}",
                "w" if overwrite else "x",
                encoding="utf8",
            ) as f:
                f.write("# Generated by utils.py\n")
                yaml.dump(
                    yaml_details,
                    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=True,
        action="store_true",
        help="Overwrite files if they already exist",
    )
    parser.add_argument(
        "--output-dir",
        default="./",
        help="Directory to write yaml files to",
    )
    parser.add_argument(
        "--mode",
        default="prompt_1",
        choices=["prompt_1", "prompt_2", "prompt_3", "prompt_4", "prompt_5"],
        help="Prompt number",
    )
    args = parser.parse_args()

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


if __name__ == "__main__":
    main()