import json
from pathlib import Path
from sklearn.model_selection import train_test_split
from .utils import asr_manifest_reader, asr_manifest_writer
import typer

app = typer.Typer()


@app.command()
def split_data(dataset_path: Path, test_size: float = 0.1):
    manifest_path = dataset_path / Path("abs_manifest.json")
    asr_data = list(asr_manifest_reader(manifest_path))
    train_pnr, test_pnr = train_test_split(asr_data, test_size=test_size)
    asr_manifest_writer(manifest_path.with_name("train_manifest.json"), train_pnr)
    asr_manifest_writer(manifest_path.with_name("test_manifest.json"), test_pnr)


@app.command()
def fixate_data(dataset_path: Path):
    manifest_path = dataset_path / Path("manifest.json")
    real_manifest_path = dataset_path / Path("abs_manifest.json")

    def fix_path():
        for i in asr_manifest_reader(manifest_path):
            i["audio_filepath"] = str(dataset_path / Path(i["audio_filepath"]))
            yield i

    asr_manifest_writer(real_manifest_path, fix_path())


@app.command()
def augment_an4():
    an4_train = Path("/dataset/asr_data/an4/train_manifest.json").read_bytes()
    an4_test = Path("/dataset/asr_data/an4/test_manifest.json").read_bytes()
    pnr_train = Path("/dataset/asr_data/pnr_data/train_manifest.json").read_bytes()
    pnr_test = Path("/dataset/asr_data/pnr_data/test_manifest.json").read_bytes()

    with Path("/dataset/asr_data/an4_pnr/train_manifest.json").open("wb") as pf:
        pf.write(an4_train + pnr_train)
    with Path("/dataset/asr_data/an4_pnr/test_manifest.json").open("wb") as pf:
        pf.write(an4_test + pnr_test)


@app.command()
def validate_data(data_file: Path):
    with Path(data_file).open("r") as pf:
        pnr_jsonl = pf.readlines()
    for (i, s) in enumerate(pnr_jsonl):
        try:
            d = json.loads(s)
            audio_file = data_file.parent / Path(d["audio_filepath"])
            if not audio_file.exists():
                raise OSError(f"File {audio_file} not found")
        except BaseException as e:
            print(f'failed on {i} with "{e}"')
    print("no errors found. seems like a valid manifest.")


def main():
    app()


if __name__ == "__main__":
    main()