import datetime
import re
import subprocess
from pathlib import Path

import pandas as pd
import typer
from datasets import get_dataset_config_names, load_dataset

CSV_SCHEMA = {
    "banking_77": (5000, 2),
    "overruling": (2350, 2),
    "semiconductor_org_types": (449, 2),
    "ade_corpus_v2": (5000, 2),
    "twitter_complaints": (3399, 2),
    "neurips_impact_statement_risks": (150, 2),
    "systematic_review_inclusion": (2243, 2),
    "terms_of_service": (5000, 2),
    "tai_safety_research": (1639, 2),
    "one_stop_english": (516, 2),
    "tweet_eval_hate": (2966, 2),
}

app = typer.Typer()


def _update_submission_name(submission_name: str):
    replacement = ""
    with open("README.md", "r", encoding="utf-8") as f:
        lines = f.readlines()

    for line in lines:
        if line.startswith("submission_name:"):
            changes = re.sub(
                r"submission_name:.+", f"submission_name: {submission_name}", line
            )
            replacement += changes
        else:
            replacement += line

    with open("README.md", "w", encoding="utf-8") as f:
        f.write(replacement)


@app.command()
def validate():
    # TODO(lewtun): Consider using great_expectations for the data validation
    tasks = get_dataset_config_names("ought/raft")

    # Check that all the expected files exist
    prediction_files = list(Path("data").rglob("predictions.csv"))
    mismatched_files = set(tasks).symmetric_difference(
        set([f.parent.name for f in prediction_files])
    )
    if mismatched_files:
        raise ValueError(
            f"Incorrect number of files! Expected {len(tasks)} files, but got {len(prediction_files)}."
        )

    # Check all files have the expected shape (number of rows, number of columns)
    # TODO(lewtun): Add a check for the specific IDs per file
    shape_errors = []
    column_errors = []
    for prediction_file in prediction_files:
        df = pd.read_csv(prediction_file)
        incorrect_shape = df.shape != CSV_SCHEMA[prediction_file.parent.name]
        if incorrect_shape:
            shape_errors.append(prediction_file)
        incorrect_columns = sorted(df.columns) != ["ID", "Label"]
        if incorrect_columns:
            column_errors.append(prediction_file)

    if shape_errors:
        raise ValueError(f"Incorrect CSV shapes in files: {shape_errors}")

    if column_errors:
        raise ValueError(f"Incorrect CSV columns in files: {column_errors}")

    # Check we can load the dataset for each task
    load_errors = []
    for task in tasks:
        try:
            _ = load_dataset("../{{cookiecutter.repo_name}}", task)
        except Exception as e:
            load_errors.append(e)

    if load_errors:
        raise ValueError(f"Could not load predictions! Errors: {load_errors}")

    typer.echo("All submission files validated! ✨ 🚀 ✨")
    typer.echo("Now you can make a submission 🤗")


@app.command()
def submit(
    submission_name: str = typer.Option(
        ..., prompt="Please provide a name for your submission, e.g. GPT-4 😁"
    )
):
    subprocess.call("git pull origin main".split())
    _update_submission_name(submission_name)
    subprocess.call(["git", "add", "data/*predictions.csv", "README.md"])
    subprocess.call(["git", "commit", "-m", f"Submission: {submission_name} "])
    subprocess.call(["git", "push"])

    today = datetime.date.today()
    # MON = 0, SUN = 6 -> SUN = 0 .. SAT = 6
    idx = (today.weekday() + 1) % 7
    sun = today + datetime.timedelta(7 - idx)
    typer.echo("Submission successful! 🎉 🥳 🎉")
    typer.echo(f"Your submission will be evaluated on {sun:%A %d %B %Y} at 12:00 UTC ⏳")


if __name__ == "__main__":
    app()