"""Pre-rendered showcase broadcasts."""

from __future__ import annotations

import json
from dataclasses import dataclass
from pathlib import Path

ROOT = Path(__file__).resolve().parents[2]
SHOWCASE_DIR = ROOT / "assets" / "showcases"


@dataclass(frozen=True)
class Showcase:
    id: str
    label: str
    audio_path: Path
    script_path: Path


SHOWCASES = [
    Showcase(
        id="phone_booth",
        label="The Case of A Phone Booth That Rings Under",
        audio_path=SHOWCASE_DIR / "the-case-of-a-phone-booth-that-rings-under.crude.wav",
        script_path=SHOWCASE_DIR / "the-case-of-a-phone-booth-that-rings-under.json",
    ),
    Showcase(
        id="lighthouse",
        label="The Case of Two Rival Lighthouse Keepers One Light",
        audio_path=SHOWCASE_DIR / "the-case-of-two-rival-lighthouse-keepers-one-light.crude.wav",
        script_path=SHOWCASE_DIR / "the-case-of-two-rival-lighthouse-keepers-one-light.json",
    ),
    Showcase(
        id="wrong_bride",
        label="The Case of A Wedding Where Every Guest Recognizes",
        audio_path=SHOWCASE_DIR / "the-case-of-a-wedding-where-every-guest-recognizes.crude.wav",
        script_path=SHOWCASE_DIR / "the-case-of-a-wedding-where-every-guest-recognizes.json",
    ),
]


def default_showcase() -> tuple[str | None, str]:
    """Return the default showcase audio path and pretty script JSON."""
    return load_showcase(SHOWCASES[0].label)


def showcase_labels() -> list[str]:
    return [showcase.label for showcase in SHOWCASES]


def load_showcase(label: str) -> tuple[str | None, str]:
    showcase = _find_showcase(label)
    if showcase is None or not showcase.audio_path.exists() or not showcase.script_path.exists():
        return None, "{}"
    payload = json.loads(showcase.script_path.read_text(encoding="utf-8"))
    return str(showcase.audio_path), json.dumps(payload, indent=2)


def _find_showcase(label: str) -> Showcase | None:
    for showcase in SHOWCASES:
        if showcase.label == label:
            return showcase
    return None