"""otto 活字印刷 —— 入口(元数据 + 依赖)。"""

from __future__ import annotations

from pathlib import Path

from nonebot import get_driver, require
from nonebot.plugin import PluginMetadata

require("nonebot_plugin_alconna")

__plugin_meta__ = PluginMetadata(
    name="otto活字印刷",
    description="鬼畜音源活字印刷(otto语音合成)",
    usage="otto 一些内容 生成otto语音\notto 一些内容 -reverse 生成并倒放",
    type="application",
)

_PLUGIN_ROOT = Path(__file__).resolve().parent
# 生成音频统一落到 hexi/data/temp/otto（与 video_analysis 的临时目录约定一致）。
# 协议端(NapCat)通常与 bot 后端不在同一台机器，无法直接访问本地文件，
# 所以先落盘再通过 FastAPI 路由以 http URL 提供给 NapCat 下载。
_TEMP_ROOT = _PLUGIN_ROOT.parent.parent / "data" / "temp" / "otto"

_driver = get_driver()


@_driver.on_startup
async def _register_media_route() -> None:
    """挂载 /api/otto/{filename}，供协议端跨机器下载生成的语音。"""
    from fastapi import HTTPException
    from fastapi.responses import FileResponse
    from nonebot import get_app

    app = get_app()

    def serve_otto_file(filename: str):
        root = _TEMP_ROOT.resolve()
        target = (root / filename).resolve()
        if root != target.parent and root not in target.parents:
            raise HTTPException(status_code=403, detail="Forbidden")
        if not target.is_file():
            raise HTTPException(status_code=404, detail="Not Found")
        return FileResponse(target, media_type="audio/mpeg")

    if not any(getattr(r, "path", None) == "/api/otto/{filename}" for r in app.routes):
        app.add_api_route(
            "/api/otto/{filename}",
            serve_otto_file,
            methods=["GET"],
            name="otto_media",
        )


from .handlers import otto  # noqa: E402,F401