import importlib
from types import SimpleNamespace
import typer
import sys
from typing import List, Optional
from typing_extensions import Annotated

from beakers.beakers import SqliteBeaker

app = typer.Typer()


def _load_recipe(dotted_path: str):
    sys.path.append(".")
    path, name = dotted_path.rsplit(".", 1)
    mod = importlib.import_module(path)
    return getattr(mod, name)


@app.callback()
def main(
    ctx: typer.Context,
    recipe: str = typer.Option(None, envvar="BEAKER_RECIPE"),
):
    if not recipe:
        typer.secho(
            "Missing recipe; pass --recipe or set env[BEAKER_RECIPE]",
            fg=typer.colors.RED,
        )
        raise typer.Exit(1)
    ctx.obj = _load_recipe(recipe)


@app.command()
def reset(ctx: typer.Context):
    for beaker in ctx.obj.beakers.values():
        if isinstance(beaker, SqliteBeaker):
            if bl := len(beaker):
                beaker.reset()
                typer.secho(f"{beaker.name} reset ({bl})", fg=typer.colors.RED)
            else:
                typer.secho(f"{beaker.name} empty", fg=typer.colors.GREEN)


@app.command()
def show(ctx: typer.Context):
    ctx.obj.show()


@app.command()
def run(
    ctx: typer.Context,
    input: Annotated[Optional[List[str]], typer.Option(...)] = None,
    start: Optional[str] = typer.Option(None),
    end: Optional[str] = typer.Option(None),
):
    has_data = any(ctx.obj.beakers.values())
    if not has_data and not input:
        typer.secho("No data; pass --input to seed beaker(s)", fg=typer.colors.RED)
        raise typer.Exit(1)
    for input_str in input:
        beaker, filename = input_str.split("=")
        ctx.obj.csv_to_beaker(filename, beaker)
    ctx.obj.run_once(start, end)


if __name__ == "__main__":
    app()