from __future__ import annotations

import asyncio
import sys
from contextlib import asynccontextmanager
from pathlib import Path

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


PROJECT_ROOT = Path(__file__).resolve().parents[1]

if str(PROJECT_ROOT) not in sys.path:
    sys.path.insert(
        0,
        str(PROJECT_ROOT),
    )


from app.routes import (
    RagRequest,
    SearchRequest,
    SyncRequest,
    gitea_webhook,
    health,
    rag,
    router,
    search,
    sync,
)
from app.security import (
    MIN_SECRET_LENGTH,
    SEARCH_API_KEY_HEADER,
    SYNC_API_KEY_HEADER,
    expected_gitea_repository,
    repository_name_from_payload,
    require_search_api_key,
    require_sync_api_key,
    required_environment_value,
    same_repository,
    search_api_key_scheme,
    search_bearer_scheme,
    sync_api_key_scheme,
    validate_secret,
    validate_security_configuration,
    verify_gitea_signature,
    webhook_should_pull_git,
)
from scripts.embedding_utils import embed_query


OPENWEBUI_ORIGIN = (
    "https://ui.tukekemt.xyz"
)


@asynccontextmanager
async def lifespan(
    _: FastAPI,
):
    validate_security_configuration()

    # Predhriatie embedding modelu.
    await asyncio.to_thread(
        embed_query,
        "warmup",
    )

    yield


app = FastAPI(
    title="ZP Agent API",
    description=(
        "RAG API pre vyhľadávanie "
        "a získavanie informácií "
        "z repozitára záverečných prác "
        "ZP Wiki."
    ),
    version="0.8.0",
    lifespan=lifespan,
)


app.add_middleware(
    CORSMiddleware,
    allow_origins=[
        OPENWEBUI_ORIGIN,
    ],
    allow_credentials=True,
    allow_methods=[
        "GET",
        "POST",
        "OPTIONS",
    ],
    allow_headers=["*"],
    allow_private_network=True,
)


app.include_router(
    router
)