"""Formal FastAPI entrypoint for the creation-knowledge workbench."""
from __future__ import annotations

import os
from pathlib import Path

from fastapi import FastAPI
from fastapi.middleware.cors import CORSMiddleware
from fastapi.staticfiles import StaticFiles

from app.routes import acquisition, decode, payloads, query_generation, runs

ROOT = Path(__file__).resolve().parent.parent
FRONTEND_DIST = ROOT / "app" / "frontend" / "dist"


def _cors_origins() -> list[str]:
    raw = os.getenv("CK_CORS_ORIGINS", "")
    if raw.strip():
        return [item.strip() for item in raw.split(",") if item.strip()]
    return [
        "http://localhost:5173",
        "http://127.0.0.1:5173",
        "http://localhost:5180",
        "http://127.0.0.1:5180",
    ]


def create_app() -> FastAPI:
    app = FastAPI(title="创作知识发现解构工作台", version="0.6.0")
    app.add_middleware(
        CORSMiddleware,
        allow_origins=_cors_origins(),
        allow_credentials=True,
        allow_methods=["GET", "POST", "PATCH", "OPTIONS"],
        allow_headers=["Authorization", "Content-Type"],
    )
    app.include_router(acquisition.router)
    app.include_router(decode.router)
    app.include_router(payloads.router)
    app.include_router(query_generation.router)
    app.include_router(runs.router)

    @app.get("/health")
    def health() -> dict[str, str]:
        return {"status": "ok", "entrypoint": "app.api:app"}

    if FRONTEND_DIST.exists():
        app.mount("/app", StaticFiles(directory=str(FRONTEND_DIST), html=True), name="app")
    return app


app = create_app()