import io
import logging
import os
from pathlib import Path
from textwrap import dedent
from typing import Optional

import typer
from dotenv import load_dotenv
from rich import print
from rich.logging import RichHandler

from ttfrog.path import assets

default_data_path = Path("~/.dnd/ttfrog")
default_host = "127.0.0.1"
default_port = 2323

SETUP_HELP = f"""
# Please make sure you set the SECRET_KEY in your environment. By default,
# TableTop Frog will attempt to load these variables from:
#     {default_data_path}/defaults
#
# which may contain the following variables as well.
#
# See also the --root paramter.

DATA_PATH={default_data_path}

# Uncomment one or both of these to replace the packaged static assets and templates:
#
# STATIC_FILES_PATH={assets()}/public
# TEMPLATES_PATH={assets()}/templates

HOST={default_host}
PORT={default_port}
"""

db_app = typer.Typer()
app = typer.Typer()
app.add_typer(db_app, name="db", help="Manage the database.")
app_state = dict()


@app.callback()
@db_app.callback()
def main(
    context: typer.Context,
    root: Optional[Path] = typer.Option(
        default_data_path,
        help="Path to the TableTop Frog environment",
    ),
):
    app_state["env"] = root.expanduser() / Path("defaults")
    load_dotenv(stream=io.StringIO(SETUP_HELP))
    load_dotenv(app_state["env"])
    debug = os.getenv("DEBUG", None)
    logging.basicConfig(
        format="%(message)s",
        level=logging.DEBUG if debug else logging.INFO,
        handlers=[RichHandler(rich_tracebacks=True, tracebacks_suppress=[typer])],
    )


@app.command()
def serve(
    context: typer.Context,
    host: str = typer.Argument(
        default_host,
        help="bind address",
    ),
    port: int = typer.Argument(
        default_port,
        help="bind port",
    ),
    debug: bool = typer.Option(False, help="Enable debugging output"),
):
    """
    Start the TableTop Frog server.
    """

    # delay loading the app until we have configured our environment
    from ttfrog.db.bootstrap import loader
    from ttfrog.webserver import application

    print("Starting TableTop Frog server...")
    loader.load()
    application.start(host=host, port=port, debug=debug)


@db_app.command()
def setup(context: typer.Context):
    """
    (Re)Initialize TableTop Frog. Idempotent; will preserve any existing configuration.
    """
    from ttfrog.db.bootstrap import loader

    if not os.path.exists(app_state["env"]):
        app_state["env"].parent.mkdir(parents=True, exist_ok=True)
        app_state["env"].write_text(dedent(SETUP_HELP))
        print(f"Wrote defaults file {app_state['env']}.")
    loader.load()


@db_app.command()
def list(context: typer.Context):
    from ttfrog.db.manager import db

    print("\n".join(sorted(db.tables.keys())))


@db_app.command(context_settings={"allow_extra_args": True, "ignore_unknown_options": True})
def dump(context: typer.Context):
    """
    Dump tables (or the entire database) as a JSON blob.
    """
    from ttfrog.db.manager import db

    setup(context)
    print(db.dump(context.args))


if __name__ == "__main__":
    app()