import os
from utils import parse, read_json_file, write_jsonl_file


def parse_dialogue_knowledge(utterances):
    dialogue = []
    for utter in utterances:
        dialogue.append({"roles": [utter["speaker"]], "utterance": utter["text"]})

    return {"type": "dict", "value": {"dialogue": dialogue}}


def preprocess(args, split):
    infile = os.path.join(args.input_dir, f"{split}.json")
    outfile = os.path.join(args.output_dir, f"{split}.jsonl")

    data = read_json_file(infile)["data"]["dialogues"]
    processed_data = []

    for example in data:
        knowledge = parse_dialogue_knowledge(example["edus"])

        for qa in example["qas"]:
            dial = {
                "turn": "single",
                "locale": "en",
                "dialog": [],
                "knowledge": knowledge,
            }

            dial["dialog"].append({"roles": ["USER"], "utterance": qa["question"]})

            if not qa["answers"]:
                dial["dialog"].append({"roles": ["SYSTEM"], "utterance": "None"})
            else:
                for answer in qa["answers"]:
                    dial["dialog"].append(
                        {"roles": ["SYSTEM"], "utterance": answer["text"]}
                    )
            processed_data.append(dial)

    write_jsonl_file(processed_data, outfile)


if __name__ == "__main__":
    args = parse()
    preprocess(args, "train")
    preprocess(args, "dev")
    preprocess(args, "test")